目录
1、AlarmAlertActivity.java
2、AlarmInitReceiver.java
3、AlarmReceiver.java
4、DateTimePicker.java
5、DateTimePickerDialog.java
6、DropdownMenu.java
7、FoldersListAdapter.java
8、NoteEditActivity.java
9、NoteEditText.java
10、NoteItemData.java
11、NotesListActivity.java
12、NotesListAdapter.java
13、NotesListItem.java文章来源：https://www.toymoban.com/news/detail-781071.html
14、NotesPreferenceActivity.java文章来源地址https://www.toymoban.com/news/detail-781071.html
1、AlarmAlertActivity.java
package net.micode.notes.ui;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.content.DialogInterface.OnDismissListener;
import android.content.Intent;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.media.RingtoneManager;
import android.net.Uri;
import android.os.Bundle;
import android.os.PowerManager;
import android.provider.Settings;
import android.view.Window;
import android.view.WindowManager;
import net.micode.notes.R;
import net.micode.notes.data.Notes;
import net.micode.notes.tool.DataUtils;
import java.io.IOException;
public class AlarmAlertActivity extends Activity implements OnClickListener, OnDismissListener {
private long mNoteId; //文本在数据库存储中的ID号
private String mSnippet; //闹钟提示时出现的文本片段
private static final int SNIPPET_PREW_MAX_LEN = 60;
MediaPlayer mPlayer;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//Bundle类型的数据与Map类型的数据相似，都是以key-value的形式存储数据的
//onsaveInstanceState方法是用来保存Activity的状态的
//能从onCreate的参数savedInsanceState中获得状态数据
requestWindowFeature(Window.FEATURE_NO_TITLE);
//界面显示——无标题
final Window win = getWindow();
win.addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED);
if (!isScreenOn()) {
win.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON
//保持窗体点亮
| WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON
//将窗体点亮
| WindowManager.LayoutParams.FLAG_ALLOW_LOCK_WHILE_SCREEN_ON
//允许窗体点亮时锁屏
| WindowManager.LayoutParams.FLAG_LAYOUT_INSET_DECOR);
}//在手机锁屏后如果到了闹钟提示时间，点亮屏幕
Intent intent = getIntent();
try {
mNoteId = Long.valueOf(intent.getData().getPathSegments().get(1));
mSnippet = DataUtils.getSnippetById(this.getContentResolver(), mNoteId);
//根据ID从数据库中获取标签的内容；
//getContentResolver（）是实现数据共享，实例存储。
mSnippet = mSnippet.length() > SNIPPET_PREW_MAX_LEN ? mSnippet.substring(0,
SNIPPET_PREW_MAX_LEN) + getResources().getString(R.string.notelist_string_info)
: mSnippet;
//判断标签片段是否达到符合长度
} catch (IllegalArgumentException e) {
e.printStackTrace();
return;
}
/*
try
{
// 代码区
}
catch(Exception e)
{
// 异常处理
}
代码区如果有错误，就会返回所写异常的处理。*/
mPlayer = new MediaPlayer();
if (DataUtils.visibleInNoteDatabase(getContentResolver(), mNoteId, Notes.TYPE_NOTE)) {
showActionDialog();
//弹出对话框
playAlarmSound();
//闹钟提示音激发
} else {
finish();
//完成闹钟动作
}
}
private boolean isScreenOn() {
//判断屏幕是否锁屏，调用系统函数判断，最后返回值是布尔类型
PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
return pm.isScreenOn();
}
private void playAlarmSound() {
//闹钟提示音激发
Uri url = RingtoneManager.getActualDefaultRingtoneUri(this, RingtoneManager.TYPE_ALARM);
//调用系统的铃声管理URI，得到闹钟提示音
int silentModeStreams = Settings.System.getInt(getContentResolver(),
Settings.System.MODE_RINGER_STREAMS_AFFECTED, 0);
if ((silentModeStreams & (1 << AudioManager.STREAM_ALARM)) != 0) {
mPlayer.setAudioStreamType(silentModeStreams);
} else {
mPlayer.setAudioStreamType(AudioManager.STREAM_ALARM);
}
try {
mPlayer.setDataSource(this, url);
//方法：setDataSource(Context context, Uri uri)
//解释：无返回值，设置多媒体数据来源【根据 Uri】
mPlayer.prepare();
//准备同步
mPlayer.setLooping(true);
//设置是否循环播放
mPlayer.start();
//开始播放
} catch (IllegalArgumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
//e.printStackTrace()函数功能是抛出异常， 还将显示出更深的调用信息
//System.out.println(e)，这个方法打印出异常，并且输出在哪里出现的异常
} catch (SecurityException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
private void showActionDialog() {
AlertDialog.Builder dialog = new AlertDialog.Builder(this);
//AlertDialog的构造方法全部是Protected的
//所以不能直接通过new一个AlertDialog来创建出一个AlertDialog。
//要创建一个AlertDialog，就要用到AlertDialog.Builder中的create()方法
//如这里的dialog就是新建了一个AlertDialog
dialog.setTitle(R.string.app_name);
//为对话框设置标题
dialog.setMessage(mSnippet);
//为对话框设置内容
dialog.setPositiveButton(R.string.notealert_ok, this);
//给对话框添加"Yes"按钮
if (isScreenOn()) {
dialog.setNegativeButton(R.string.notealert_enter, this);
}//对话框添加"No"按钮
dialog.show().setOnDismissListener(this);
}
public void onClick(DialogInterface dialog, int which) {
switch (which) {
//用which来选择click后下一步的操作
case DialogInterface.BUTTON_NEGATIVE:
//这是取消操作
Intent intent = new Intent(this, NoteEditActivity.class);
//实现两个类间的数据传输
intent.setAction(Intent.ACTION_VIEW);
//设置动作属性
intent.putExtra(Intent.EXTRA_UID, mNoteId);
//实现key-value对
//EXTRA_UID为key；mNoteId为键
startActivity(intent);
//开始动作
break;
default:
//这是确定操作
break;
}
}
public void onDismiss(DialogInterface dialog) {
//忽略
stopAlarmSound();
//停止闹钟声音
finish();
//完成该动作
}
private void stopAlarmSound() {
if (mPlayer != null) {
mPlayer.stop();
//停止播放
mPlayer.release();
//释放MediaPlayer对象
mPlayer = null;
}
}
}
2、AlarmInitReceiver.java
package net.micode.notes.ui;
import android.app.AlarmManager;
import android.app.PendingIntent;
import android.content.BroadcastReceiver;
import android.content.ContentUris;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import net.micode.notes.data.Notes;
import net.micode.notes.data.Notes.NoteColumns;
public class AlarmInitReceiver extends BroadcastReceiver {
private static final String [] PROJECTION = new String [] {
NoteColumns.ID,
NoteColumns.ALERTED_DATE
};
//对数据库的操作，调用标签ID和闹钟时间
private static final int COLUMN_ID = 0;
private static final int COLUMN_ALERTED_DATE = 1;
@Override
public void onReceive(Context context, Intent intent) {
long currentDate = System.currentTimeMillis();
//System.currentTimeMillis()产生一个当前的毫秒
//这个毫秒其实就是自1970年1月1日0时起的毫秒数
Cursor c = context.getContentResolver().query(Notes.CONTENT_NOTE_URI,
PROJECTION,
NoteColumns.ALERTED_DATE + ">? AND " + NoteColumns.TYPE + "=" + Notes.TYPE_NOTE,
new String[] { String.valueOf(currentDate) },
//将long变量currentDate转化为字符串
null);
//Cursor在这里的作用是通过查找数据库中的标签内容，找到和当前系统时间相等的标签
if (c != null) {
if (c.moveToFirst()) {
do {
long alertDate = c.getLong(COLUMN_ALERTED_DATE);
Intent sender = new Intent(context, AlarmReceiver.class);
sender.setData(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, c.getLong(COLUMN_ID)));
PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0, sender, 0);
AlarmManager alermManager = (AlarmManager) context
.getSystemService(Context.ALARM_SERVICE);
alermManager.set(AlarmManager.RTC_WAKEUP, alertDate, pendingIntent);
} while (c.moveToNext());
}
c.close();
}
//然而通过网上查找资料发现，对于闹钟机制的启动，通常需要上面的几个步骤
//如新建Intent、PendingIntent以及AlarmManager等
//这里就是根据数据库里的闹钟时间创建一个闹钟机制
}
}
3、AlarmReceiver.java
package net.micode.notes.ui;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
public class AlarmReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
intent.setClass(context, AlarmAlertActivity.class);
//启动AlarmAlertActivity
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
//activity要存在于activity的栈中，而非activity的途径启动activity时必然不存在一个activity的栈
//所以要新起一个栈装入启动的activity
context.startActivity(intent);
}
}
//这是实现alarm这个功能最接近用户层的包，基于上面的两个包，
//作用还需要深究但是对于setClass和addFlags的
4、DateTimePicker.java
package net.micode.notes.ui;
import java.text.DateFormatSymbols;
import java.util.Calendar;
import net.micode.notes.R;
import android.content.Context;
import android.text.format.DateFormat;
import android.view.View;
import android.widget.FrameLayout;
import android.widget.NumberPicker;
public class DateTimePicker extends FrameLayout {
//FrameLayout是布局模板之一
//所有的子元素全部在屏幕的右上方
private static final boolean DEFAULT_ENABLE_STATE = true;
private static final int HOURS_IN_HALF_DAY = 12;
private static final int HOURS_IN_ALL_DAY = 24;
private static final int DAYS_IN_ALL_WEEK = 7;
private static final int DATE_SPINNER_MIN_VAL = 0;
private static final int DATE_SPINNER_MAX_VAL = DAYS_IN_ALL_WEEK - 1;
private static final int HOUR_SPINNER_MIN_VAL_24_HOUR_VIEW = 0;
private static final int HOUR_SPINNER_MAX_VAL_24_HOUR_VIEW = 23;
private static final int HOUR_SPINNER_MIN_VAL_12_HOUR_VIEW = 1;
private static final int HOUR_SPINNER_MAX_VAL_12_HOUR_VIEW = 12;
private static final int MINUT_SPINNER_MIN_VAL = 0;
private static final int MINUT_SPINNER_MAX_VAL = 59;
private static final int AMPM_SPINNER_MIN_VAL = 0;
private static final int AMPM_SPINNER_MAX_VAL = 1;
//初始化控件
private final NumberPicker mDateSpinner;
private final NumberPicker mHourSpinner;
private final NumberPicker mMinuteSpinner;
private final NumberPicker mAmPmSpinner;
//NumberPicker是数字选择器
//这里定义的四个变量全部是在设置闹钟时需要选择的变量（如日期、时、分、上午或者下午）
private Calendar mDate;
//定义了Calendar类型的变量mDate，用于操作时间
private String[] mDateDisplayValues = new String[DAYS_IN_ALL_WEEK];
private boolean mIsAm;
private boolean mIs24HourView;
private boolean mIsEnabled = DEFAULT_ENABLE_STATE;
private boolean mInitialising;
private OnDateTimeChangedListener mOnDateTimeChangedListener;
private NumberPicker.OnValueChangeListener mOnDateChangedListener = new NumberPicker.OnValueChangeListener() {
@Override
public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
mDate.add(Calendar.DAY_OF_YEAR, newVal - oldVal);
updateDateControl();
onDateTimeChanged();
}
};//OnValueChangeListener，这是时间改变监听器，这里主要是对日期的监听
//将现在日期的值传递给mDate；updateDateControl是同步操作
private NumberPicker.OnValueChangeListener mOnHourChangedListener = new NumberPicker.OnValueChangeListener() {
//这里是对 小时（Hour） 的监听
@Override
public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
boolean isDateChanged = false;
Calendar cal = Calendar.getInstance();
//声明一个Calendar的变量cal，便于后续的操作
if (!mIs24HourView) {
if (!mIsAm && oldVal == HOURS_IN_HALF_DAY - 1 && newVal == HOURS_IN_HALF_DAY) {
cal.setTimeInMillis(mDate.getTimeInMillis());
cal.add(Calendar.DAY_OF_YEAR, 1);
isDateChanged = true;
//这里是对于12小时制时，晚上11点和12点交替时对日期的更改
} else if (mIsAm && oldVal == HOURS_IN_HALF_DAY && newVal == HOURS_IN_HALF_DAY - 1) {
cal.setTimeInMillis(mDate.getTimeInMillis());
cal.add(Calendar.DAY_OF_YEAR, -1);
isDateChanged = true;
}
//这里是对于12小时制时，凌晨11点和12点交替时对日期的更改
if (oldVal == HOURS_IN_HALF_DAY - 1 && newVal == HOURS_IN_HALF_DAY ||
oldVal == HOURS_IN_HALF_DAY && newVal == HOURS_IN_HALF_DAY - 1) {
mIsAm = !mIsAm;
updateAmPmControl();
}//这里是对于12小时制时，中午11点和12点交替时对AM和PM的更改
} else {
if (oldVal == HOURS_IN_ALL_DAY - 1 && newVal == 0) {
cal.setTimeInMillis(mDate.getTimeInMillis());
cal.add(Calendar.DAY_OF_YEAR, 1);
isDateChanged = true;
//这里是对于24小时制时，晚上11点和12点交替时对日期的更改
} else if (oldVal == 0 && newVal == HOURS_IN_ALL_DAY - 1) {
cal.setTimeInMillis(mDate.getTimeInMillis());
cal.add(Calendar.DAY_OF_YEAR, -1);
isDateChanged = true;
}
} //这里是对于12小时制时，凌晨11点和12点交替时对日期的更改
int newHour = mHourSpinner.getValue() % HOURS_IN_HALF_DAY + (mIsAm ? 0 : HOURS_IN_HALF_DAY);
//通过数字选择器对newHour的赋值
mDate.set(Calendar.HOUR_OF_DAY, newHour);
//通过set函数将新的Hour值传给mDate
onDateTimeChanged();
if (isDateChanged) {
setCurrentYear(cal.get(Calendar.YEAR));
setCurrentMonth(cal.get(Calendar.MONTH));
setCurrentDay(cal.get(Calendar.DAY_OF_MONTH));
}
}
};
private NumberPicker.OnValueChangeListener mOnMinuteChangedListener = new NumberPicker.OnValueChangeListener() {
@Override
//这里是对 分钟（Minute）改变的监听
public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
int minValue = mMinuteSpinner.getMinValue();
int maxValue = mMinuteSpinner.getMaxValue();
int offset = 0;
//设置offset，作为小时改变的一个记录数据
if (oldVal == maxValue && newVal == minValue) {
offset += 1;
} else if (oldVal == minValue && newVal == maxValue) {
offset -= 1;
}
//如果原值为59，新值为0，则offset加1
//如果原值为0，新值为59，则offset减1
if (offset != 0) {
mDate.add(Calendar.HOUR_OF_DAY, offset);
mHourSpinner.setValue(getCurrentHour());
updateDateControl();
int newHour = getCurrentHourOfDay();
if (newHour >= HOURS_IN_HALF_DAY) {
mIsAm = false;
updateAmPmControl();
} else {
mIsAm = true;
updateAmPmControl();
}
}
mDate.set(Calendar.MINUTE, newVal);
onDateTimeChanged();
}
};
private NumberPicker.OnValueChangeListener mOnAmPmChangedListener = new NumberPicker.OnValueChangeListener() {
//对AM和PM的监听
@Override
public void onValueChange(NumberPicker picker, int oldVal, int newVal) {
mIsAm = !mIsAm;
if (mIsAm) {
mDate.add(Calendar.HOUR_OF_DAY, -HOURS_IN_HALF_DAY);
} else {
mDate.add(Calendar.HOUR_OF_DAY, HOURS_IN_HALF_DAY);
}
updateAmPmControl();
onDateTimeChanged();
}
};
public interface OnDateTimeChangedListener {
void onDateTimeChanged(DateTimePicker view, int year, int month,
int dayOfMonth, int hourOfDay, int minute);
}
public DateTimePicker(Context context) {
this(context, System.currentTimeMillis());
}//通过对数据库的访问，获取当前的系统时间
public DateTimePicker(Context context, long date) {
this(context, date, DateFormat.is24HourFormat(context));
}//上面函数的得到的是一个天文数字（1970至今的秒数），需要DateFormat将其变得有意义
public DateTimePicker(Context context, long date, boolean is24HourView) {
super(context);
//获取系统时间
mDate = Calendar.getInstance();
mInitialising = true;
mIsAm = getCurrentHourOfDay() >= HOURS_IN_HALF_DAY;
inflate(context, R.layout.datetime_picker, this);
//如果当前Activity里用到别的layout，比如对话框layout
//还要设置这个layout上的其他组件的内容，就必须用inflate()方法先将对话框的layout找出来
//然后再用findViewById()找到它上面的其它组件
mDateSpinner = (NumberPicker) findViewById(R.id.date);
mDateSpinner.setMinValue(DATE_SPINNER_MIN_VAL);
mDateSpinner.setMaxValue(DATE_SPINNER_MAX_VAL);
mDateSpinner.setOnValueChangedListener(mOnDateChangedListener);
mHourSpinner = (NumberPicker) findViewById(R.id.hour);
mHourSpinner.setOnValueChangedListener(mOnHourChangedListener);
mMinuteSpinner = (NumberPicker) findViewById(R.id.minute);
mMinuteSpinner.setMinValue(MINUT_SPINNER_MIN_VAL);
mMinuteSpinner.setMaxValue(MINUT_SPINNER_MAX_VAL);
mMinuteSpinner.setOnLongPressUpdateInterval(100);
mMinuteSpinner.setOnValueChangedListener(mOnMinuteChangedListener);
String[] stringsForAmPm = new DateFormatSymbols().getAmPmStrings();
mAmPmSpinner = (NumberPicker) findViewById(R.id.amPm);
mAmPmSpinner.setMinValue(AMPM_SPINNER_MIN_VAL);
mAmPmSpinner.setMaxValue(AMPM_SPINNER_MAX_VAL);
mAmPmSpinner.setDisplayedValues(stringsForAmPm);
mAmPmSpinner.setOnValueChangedListener(mOnAmPmChangedListener);
// update controls to initial state
updateDateControl();
updateHourControl();
updateAmPmControl();
set24HourView(is24HourView);
// set to current time
setCurrentDate(date);
setEnabled(isEnabled());
// set the content descriptions
mInitialising = false;
}
@Override
public void setEnabled(boolean enabled) {
if (mIsEnabled == enabled) {
return;
}
super.setEnabled(enabled);
mDateSpinner.setEnabled(enabled);
mMinuteSpinner.setEnabled(enabled);
mHourSpinner.setEnabled(enabled);
mAmPmSpinner.setEnabled(enabled);
mIsEnabled = enabled;
}
//存在疑问！！！！！！！！！！！！！setEnabled的作用
//下面的代码通过原程序的注释已经比较清晰，另外可以通过函数名来判断
//下面的各函数主要是对上面代码引用到的各函数功能的实现
@Override
public boolean isEnabled() {
return mIsEnabled;
}
/**
* Get the current date in millis
*
* @return the current date in millis
*/
public long getCurrentDateInTimeMillis() {
return mDate.getTimeInMillis();
}//实现函数——得到当前的秒数
/**
* Set the current date
*
* @param date The current date in millis
*/
public void setCurrentDate(long date) {
Calendar cal = Calendar.getInstance();
cal.setTimeInMillis(date);
setCurrentDate(cal.get(Calendar.YEAR), cal.get(Calendar.MONTH), cal.get(Calendar.DAY_OF_MONTH),
cal.get(Calendar.HOUR_OF_DAY), cal.get(Calendar.MINUTE));
}//实现函数功能——设置当前的时间，参数是date
/**
* Set the current date
*
* @param year The current year
* @param month The current month
* @param dayOfMonth The current dayOfMonth
* @param hourOfDay The current hourOfDay
* @param minute The current minute
*/
public void setCurrentDate(int year, int month,
int dayOfMonth, int hourOfDay, int minute) {
setCurrentYear(year);
setCurrentMonth(month);
setCurrentDay(dayOfMonth);
setCurrentHour(hourOfDay);
setCurrentMinute(minute);
}//实现函数功能——设置当前的时间，参数是各详细的变量
/**
* Get current year
*
* @return The current year
*/
//下面是得到year、month、day等值
public int getCurrentYear() {
return mDate.get(Calendar.YEAR);
}
/**
* Set current year
*
* @param year The current year
*/
public void setCurrentYear(int year) {
if (!mInitialising && year == getCurrentYear()) {
return;
}
mDate.set(Calendar.YEAR, year);
updateDateControl();
onDateTimeChanged();
}
/**
* Get current month in the year
*
* @return The current month in the year
*/
public int getCurrentMonth() {
return mDate.get(Calendar.MONTH);
}
/**
* Set current month in the year
*
* @param month The month in the year
*/
public void setCurrentMonth(int month) {
if (!mInitialising && month == getCurrentMonth()) {
return;
}
mDate.set(Calendar.MONTH, month);
updateDateControl();
onDateTimeChanged();
}
/**
* Get current day of the month
*
* @return The day of the month
*/
public int getCurrentDay() {
return mDate.get(Calendar.DAY_OF_MONTH);
}
/**
* Set current day of the month
*
* @param dayOfMonth The day of the month
*/
public void setCurrentDay(int dayOfMonth) {
if (!mInitialising && dayOfMonth == getCurrentDay()) {
return;
}
mDate.set(Calendar.DAY_OF_MONTH, dayOfMonth);
updateDateControl();
onDateTimeChanged();
}
/**
* Get current hour in 24 hour mode, in the range (0~23)
* @return The current hour in 24 hour mode
*/
public int getCurrentHourOfDay() {
return mDate.get(Calendar.HOUR_OF_DAY);
}
private int getCurrentHour() {
if (mIs24HourView){
return getCurrentHourOfDay();
} else {
int hour = getCurrentHourOfDay();
if (hour > HOURS_IN_HALF_DAY) {
return hour - HOURS_IN_HALF_DAY;
} else {
return hour == 0 ? HOURS_IN_HALF_DAY : hour;
}
}
}
/**
* Set current hour in 24 hour mode, in the range (0~23)
*
* @param hourOfDay
*/
public void setCurrentHour(int hourOfDay) {
if (!mInitialising && hourOfDay == getCurrentHourOfDay()) {
return;
}
mDate.set(Calendar.HOUR_OF_DAY, hourOfDay);
if (!mIs24HourView) {
if (hourOfDay >= HOURS_IN_HALF_DAY) {
mIsAm = false;
if (hourOfDay > HOURS_IN_HALF_DAY) {
hourOfDay -= HOURS_IN_HALF_DAY;
}
} else {
mIsAm = true;
if (hourOfDay == 0) {
hourOfDay = HOURS_IN_HALF_DAY;
}
}
updateAmPmControl();
}
mHourSpinner.setValue(hourOfDay);
onDateTimeChanged();
}
/**
* Get currentMinute
*
* @return The Current Minute
*/
public int getCurrentMinute() {
return mDate.get(Calendar.MINUTE);
}
/**
* Set current minute
*/
public void setCurrentMinute(int minute) {
if (!mInitialising && minute == getCurrentMinute()) {
return;
}
mMinuteSpinner.setValue(minute);
mDate.set(Calendar.MINUTE, minute);
onDateTimeChanged();
}
/**
* @return true if this is in 24 hour view else false.
*/
public boolean is24HourView () {
return mIs24HourView;
}
/**
* Set whether in 24 hour or AM/PM mode.
*
* @param is24HourView True for 24 hour mode. False for AM/PM mode.
*/
public void set24HourView(boolean is24HourView) {
if (mIs24HourView == is24HourView) {
return;
}
mIs24HourView = is24HourView;
mAmPmSpinner.setVisibility(is24HourView ? View.GONE : View.VISIBLE);
int hour = getCurrentHourOfDay();
updateHourControl();
setCurrentHour(hour);
updateAmPmControl();
}
private void updateDateControl() {
Calendar cal = Calendar.getInstance();
cal.setTimeInMillis(mDate.getTimeInMillis());
cal.add(Calendar.DAY_OF_YEAR, -DAYS_IN_ALL_WEEK / 2 - 1);
mDateSpinner.setDisplayedValues(null);
for (int i = 0; i < DAYS_IN_ALL_WEEK; ++i) {
cal.add(Calendar.DAY_OF_YEAR, 1);
mDateDisplayValues[i] = (String) DateFormat.format("MM.dd EEEE", cal);
}
mDateSpinner.setDisplayedValues(mDateDisplayValues);
mDateSpinner.setValue(DAYS_IN_ALL_WEEK / 2);
mDateSpinner.invalidate();
}// 对于星期几的算法
private void updateAmPmControl() {
if (mIs24HourView) {
mAmPmSpinner.setVisibility(View.GONE);
} else {
int index = mIsAm ? Calendar.AM : Calendar.PM;
mAmPmSpinner.setValue(index);
mAmPmSpinner.setVisibility(View.VISIBLE);
}// 对于上下午操作的算法
}
private void updateHourControl() {
if (mIs24HourView) {
mHourSpinner.setMinValue(HOUR_SPINNER_MIN_VAL_24_HOUR_VIEW);
mHourSpinner.setMaxValue(HOUR_SPINNER_MAX_VAL_24_HOUR_VIEW);
} else {
mHourSpinner.setMinValue(HOUR_SPINNER_MIN_VAL_12_HOUR_VIEW);
mHourSpinner.setMaxValue(HOUR_SPINNER_MAX_VAL_12_HOUR_VIEW);
}// 对与小时的算法
}
/**
* Set the callback that indicates the 'Set' button has been pressed.
* @param callback the callback, if null will do nothing
*/
public void setOnDateTimeChangedListener(OnDateTimeChangedListener callback) {
mOnDateTimeChangedListener = callback;
}
private void onDateTimeChanged() {
if (mOnDateTimeChangedListener != null) {
mOnDateTimeChangedListener.onDateTimeChanged(this, getCurrentYear(),
getCurrentMonth(), getCurrentDay(), getCurrentHourOfDay(), getCurrentMinute());
}
}
}
5、DateTimePickerDialog.java
package net.micode.notes.ui;
import java.util.Calendar;
import net.micode.notes.R;
import net.micode.notes.ui.DateTimePicker;
import net.micode.notes.ui.DateTimePicker.OnDateTimeChangedListener;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.text.format.DateFormat;
import android.text.format.DateUtils;
public class DateTimePickerDialog extends AlertDialog implements OnClickListener {
private Calendar mDate = Calendar.getInstance();
//创建一个Calendar类型的变量 mDate，方便时间的操作
private boolean mIs24HourView;
private OnDateTimeSetListener mOnDateTimeSetListener;
//声明一个时间日期滚动选择控件 mOnDateTimeSetListener
private DateTimePicker mDateTimePicker;
//DateTimePicker控件，控件一般用于让用户可以从日期列表中选择单个值。
//运行时，单击控件边上的下拉箭头，会显示为两个部分：一个下拉列表，一个用于选择日期的
public interface OnDateTimeSetListener {
void OnDateTimeSet(AlertDialog dialog, long date);
}
public DateTimePickerDialog(Context context, long date) {
//对该界面对话框的实例化
super(context);
//对数据库的操作
mDateTimePicker = new DateTimePicker(context);
setView(mDateTimePicker);
//添加一个子视图
mDateTimePicker.setOnDateTimeChangedListener(new OnDateTimeChangedListener() {
public void onDateTimeChanged(DateTimePicker view, int year, int month,
int dayOfMonth, int hourOfDay, int minute) {
mDate.set(Calendar.YEAR, year);
mDate.set(Calendar.MONTH, month);
mDate.set(Calendar.DAY_OF_MONTH, dayOfMonth);
mDate.set(Calendar.HOUR_OF_DAY, hourOfDay);
mDate.set(Calendar.MINUTE, minute);
//将视图中的各选项设置为系统当前时间
updateTitle(mDate.getTimeInMillis());
}
});
mDate.setTimeInMillis(date);
//得到系统时间
mDate.set(Calendar.SECOND, 0);
//将秒数设置为0
mDateTimePicker.setCurrentDate(mDate.getTimeInMillis());
setButton(context.getString(R.string.datetime_dialog_ok), this);
setButton2(context.getString(R.string.datetime_dialog_cancel), (OnClickListener)null);
//设置按钮
set24HourView(DateFormat.is24HourFormat(this.getContext()));
//时间标准化打印
updateTitle(mDate.getTimeInMillis());
}
public void set24HourView(boolean is24HourView) {
mIs24HourView = is24HourView;
}
public void setOnDateTimeSetListener(OnDateTimeSetListener callBack) {
mOnDateTimeSetListener = callBack;
}//将时间日期滚动选择控件实例化
private void updateTitle(long date) {
int flag =
DateUtils.FORMAT_SHOW_YEAR |
DateUtils.FORMAT_SHOW_DATE |
DateUtils.FORMAT_SHOW_TIME;
flag |= mIs24HourView ? DateUtils.FORMAT_24HOUR : DateUtils.FORMAT_24HOUR;
setTitle(DateUtils.formatDateTime(this.getContext(), date, flag));
}//android开发中常见日期管理工具类（API）——DateUtils：按照上下午显示时间
public void onClick(DialogInterface arg0, int arg1) {
if (mOnDateTimeSetListener != null) {
mOnDateTimeSetListener.OnDateTimeSet(this, mDate.getTimeInMillis());
}
}//第一个参数arg0是接收到点击事件的对话框
//第二个参数arg1是该对话框上的按钮
}6、DropdownMenu.java
package net.micode.notes.ui;
import android.content.Context;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.PopupMenu;
import android.widget.PopupMenu.OnMenuItemClickListener;
import net.micode.notes.R;
public class DropdownMenu {
private Button mButton;
private PopupMenu mPopupMenu;
//声明一个下拉菜单
private Menu mMenu;
public DropdownMenu(Context context, Button button, int menuId) {
mButton = button;
mButton.setBackgroundResource(R.drawable.dropdown_icon);
//设置这个view的背景
mPopupMenu = new PopupMenu(context, mButton);
mMenu = mPopupMenu.getMenu();
mPopupMenu.getMenuInflater().inflate(menuId, mMenu);
//MenuInflater是用来实例化Menu目录下的Menu布局文件
//根据ID来确认menu的内容选项
mButton.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
mPopupMenu.show();
}
});
}
public void setOnDropdownMenuItemClickListener(OnMenuItemClickListener listener) {
if (mPopupMenu != null) {
mPopupMenu.setOnMenuItemClickListener(listener);
}//设置菜单的监听
}
public MenuItem findItem(int id) {
return mMenu.findItem(id);
}//对于菜单选项的初始化，根据索引搜索菜单需要的选项
public void setTitle(CharSequence title) {
mButton.setText(title);
}//布局文件，设置标题
}
7、FoldersListAdapter.java
package net.micode.notes.ui;
import android.content.Context;
import android.database.Cursor;
import android.view.View;
import android.view.ViewGroup;
import android.widget.CursorAdapter;
import android.widget.LinearLayout;
import android.widget.TextView;
import net.micode.notes.R;
import net.micode.notes.data.Notes;
import net.micode.notes.data.Notes.NoteColumns;
public class FoldersListAdapter extends CursorAdapter {
//CursorAdapter是Cursor和ListView的接口
//FoldersListAdapter继承了CursorAdapter的类
//主要作用是便签数据库和用户的交互
//这里就是用folder（文件夹）的形式展现给用户
public static final String [] PROJECTION = {
NoteColumns.ID,
NoteColumns.SNIPPET
};//调用数据库中便签的ID和片段
public static final int ID_COLUMN = 0;
public static final int NAME_COLUMN = 1;
public FoldersListAdapter(Context context, Cursor c) {
super(context, c);
// TODO Auto-generated constructor stub
}//数据库操作
@Override
public View newView(Context context, Cursor cursor, ViewGroup parent) {
//ViewGroup是容器
return new FolderListItem(context);
}//创建一个文件夹，对于各文件夹中子标签的初始化
@Override
public void bindView(View view, Context context, Cursor cursor) {
if (view instanceof FolderListItem) {
String folderName = (cursor.getLong(ID_COLUMN) == Notes.ID_ROOT_FOLDER) ? context
.getString(R.string.menu_move_parent_folder) : cursor.getString(NAME_COLUMN);
((FolderListItem) view).bind(folderName);
}
}//将各个布局文件绑定起来
public String getFolderName(Context context, int position) {
Cursor cursor = (Cursor) getItem(position);
return (cursor.getLong(ID_COLUMN) == Notes.ID_ROOT_FOLDER) ? context
.getString(R.string.menu_move_parent_folder) : cursor.getString(NAME_COLUMN);
}//根据数据库中标签的ID得到标签的各项内容
private class FolderListItem extends LinearLayout {
private TextView mName;
public FolderListItem(Context context) {
super(context);
//操作数据库
inflate(context, R.layout.folder_list_item, this);
//根据布局文件的名字等信息将其找出来
mName = (TextView) findViewById(R.id.tv_folder_name);
}
public void bind(String name) {
mName.setText(name);
}
}
}
8、NoteEditActivity.java
package net.micode.notes.ui;
import android.app.Activity;
import android.app.AlarmManager;
import android.app.AlertDialog;
import android.app.PendingIntent;
import android.app.SearchManager;
import android.appwidget.AppWidgetManager;
import android.content.ContentUris;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.graphics.Paint;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.text.Spannable;
import android.text.SpannableString;
import android.text.TextUtils;
import android.text.format.DateUtils;
import android.text.style.BackgroundColorSpan;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.WindowManager;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;
import net.micode.notes.R;
import net.micode.notes.data.Notes;
import net.micode.notes.data.Notes.TextNote;
import net.micode.notes.model.WorkingNote;
import net.micode.notes.model.WorkingNote.NoteSettingChangedListener;
import net.micode.notes.tool.DataUtils;
import net.micode.notes.tool.ResourceParser;
import net.micode.notes.tool.ResourceParser.TextAppearanceResources;
import net.micode.notes.ui.DateTimePickerDialog.OnDateTimeSetListener;
import net.micode.notes.ui.NoteEditText.OnTextViewChangeListener;
import net.micode.notes.widget.NoteWidgetProvider_2x;
import net.micode.notes.widget.NoteWidgetProvider_4x;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class NoteEditActivity extends Activity implements OnClickListener,
NoteSettingChangedListener, OnTextViewChangeListener {
//该类主要是针对标签的编辑
//继承了系统内部许多和监听有关的类
private class HeadViewHolder {
public TextView tvModified;
public ImageView ivAlertIcon;
public TextView tvAlertDate;
public ImageView ibSetBgColor;
}
//使用Map实现数据存储
private static final Map<Integer, Integer> sBgSelectorBtnsMap = new HashMap<Integer, Integer>();
static {
sBgSelectorBtnsMap.put(R.id.iv_bg_yellow, ResourceParser.YELLOW);
sBgSelectorBtnsMap.put(R.id.iv_bg_red, ResourceParser.RED);
sBgSelectorBtnsMap.put(R.id.iv_bg_blue, ResourceParser.BLUE);
sBgSelectorBtnsMap.put(R.id.iv_bg_green, ResourceParser.GREEN);
sBgSelectorBtnsMap.put(R.id.iv_bg_white, ResourceParser.WHITE);
//put函数是将指定值和指定键相连
}
private static final Map<Integer, Integer> sBgSelectorSelectionMap = new HashMap<Integer, Integer>();
static {
sBgSelectorSelectionMap.put(ResourceParser.YELLOW, R.id.iv_bg_yellow_select);
sBgSelectorSelectionMap.put(ResourceParser.RED, R.id.iv_bg_red_select);
sBgSelectorSelectionMap.put(ResourceParser.BLUE, R.id.iv_bg_blue_select);
sBgSelectorSelectionMap.put(ResourceParser.GREEN, R.id.iv_bg_green_select);
sBgSelectorSelectionMap.put(ResourceParser.WHITE, R.id.iv_bg_white_select);
//put函数是将指定值和指定键相连
}
private static final Map<Integer, Integer> sFontSizeBtnsMap = new HashMap<Integer, Integer>();
static {
sFontSizeBtnsMap.put(R.id.ll_font_large, ResourceParser.TEXT_LARGE);
sFontSizeBtnsMap.put(R.id.ll_font_small, ResourceParser.TEXT_SMALL);
sFontSizeBtnsMap.put(R.id.ll_font_normal, ResourceParser.TEXT_MEDIUM);
sFontSizeBtnsMap.put(R.id.ll_font_super, ResourceParser.TEXT_SUPER);
//put函数是将指定值和指定键相连
}
private static final Map<Integer, Integer> sFontSelectorSelectionMap = new HashMap<Integer, Integer>();
static {
sFontSelectorSelectionMap.put(ResourceParser.TEXT_LARGE, R.id.iv_large_select);
sFontSelectorSelectionMap.put(ResourceParser.TEXT_SMALL, R.id.iv_small_select);
sFontSelectorSelectionMap.put(ResourceParser.TEXT_MEDIUM, R.id.iv_medium_select);
sFontSelectorSelectionMap.put(ResourceParser.TEXT_SUPER, R.id.iv_super_select);
//put函数是将指定值和指定键相连
}
private static final String TAG = "NoteEditActivity";
private HeadViewHolder mNoteHeaderHolder;
private View mHeadViewPanel;
//私有化一个界面操作mHeadViewPanel，对表头的操作
private View mNoteBgColorSelector;
//私有化一个界面操作mNoteBgColorSelector，对背景颜色的操作
private View mFontSizeSelector;
//私有化一个界面操作mFontSizeSelector，对标签字体的操作
private EditText mNoteEditor;
//声明编辑控件，对文本操作
private View mNoteEditorPanel;
//私有化一个界面操作mNoteEditorPanel，文本编辑的控制板
//private WorkingNote mWorkingNote;
public WorkingNote mWorkingNote;
//对模板WorkingNote的初始化
private SharedPreferences mSharedPrefs;
//私有化SharedPreferences的数据存储方式
//它的本质是基于XML文件存储key-value键值对数据
private int mFontSizeId;
//用于操作字体的大小
private static final String PREFERENCE_FONT_SIZE = "pref_font_size";
private static final int SHORTCUT_ICON_TITLE_MAX_LEN = 10;
public static final String TAG_CHECKED = String.valueOf('\u221A');
public static final String TAG_UNCHECKED = String.valueOf('\u25A1');
private LinearLayout mEditTextList;
//线性布局
private String mUserQuery;
private Pattern mPattern;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.setContentView(R.layout.note_edit);
//对数据库的访问操作
if (savedInstanceState == null && !initActivityState(getIntent())) {
finish();
return;
}
initResources();
}
/**
* Current activity may be killed when the memory is low. Once it is killed, for another time
* user load this activity, we should restore the former state
*/
@Override
protected void onRestoreInstanceState(Bundle savedInstanceState) {
super.onRestoreInstanceState(savedInstanceState);
if (savedInstanceState != null && savedInstanceState.containsKey(Intent.EXTRA_UID)) {
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.putExtra(Intent.EXTRA_UID, savedInstanceState.getLong(Intent.EXTRA_UID));
if (!initActivityState(intent)) {
finish();
return;
}
Log.d(TAG, "Restoring from killed activity");
}//为防止内存不足时程序的终止，在这里有一个保存现场的函数
}
private boolean initActivityState(Intent intent) {
/**
* If the user specified the {@link Intent#ACTION_VIEW} but not provided with id,
* then jump to the NotesListActivity
*/
mWorkingNote = null;
if (TextUtils.equals(Intent.ACTION_VIEW, intent.getAction())) {
long noteId = intent.getLongExtra(Intent.EXTRA_UID, 0);
mUserQuery = "";
//如果用户实例化标签时，系统并未给出标签ID
/**
* Starting from the searched result
*/
//根据键值查找ID
if (intent.hasExtra(SearchManager.EXTRA_DATA_KEY)) {
noteId = Long.parseLong(intent.getStringExtra(SearchManager.EXTRA_DATA_KEY));
mUserQuery = intent.getStringExtra(SearchManager.USER_QUERY);
}
//如果ID在数据库中未找到
if (!DataUtils.visibleInNoteDatabase(getContentResolver(), noteId, Notes.TYPE_NOTE)) {
Intent jump = new Intent(this, NotesListActivity.class);
startActivity(jump);
//程序将跳转到上面声明的intent——jump
showToast(R.string.error_note_not_exist);
finish();
return false;
}
//ID在数据库中找到
else {
mWorkingNote = WorkingNote.load(this, noteId);
if (mWorkingNote == null) {
Log.e(TAG, "load note failed with note id" + noteId);
//打印出红色的错误信息
finish();
return false;
}
}
//setSoftInputMode——软键盘输入模式
getWindow().setSoftInputMode(
WindowManager.LayoutParams.SOFT_INPUT_STATE_HIDDEN
| WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE);
} else if(TextUtils.equals(Intent.ACTION_INSERT_OR_EDIT, intent.getAction())) {
// intent.getAction()
// 大多用于broadcast发送广播时给机制（intent）设置一个action，就是一个字符串
// 用户可以通过receive（接受）intent，通过 getAction得到的字符串，来决定做什么
long folderId = intent.getLongExtra(Notes.INTENT_EXTRA_FOLDER_ID, 0);
int widgetId = intent.getIntExtra(Notes.INTENT_EXTRA_WIDGET_ID,
AppWidgetManager.INVALID_APPWIDGET_ID);
int widgetType = intent.getIntExtra(Notes.INTENT_EXTRA_WIDGET_TYPE,
Notes.TYPE_WIDGET_INVALIDE);
int bgResId = intent.getIntExtra(Notes.INTENT_EXTRA_BACKGROUND_ID,
ResourceParser.getDefaultBgId(this));
// intent.getInt（Long、String）Extra是对各变量的语法分析
// Parse call-record note
String phoneNumber = intent.getStringExtra(Intent.EXTRA_PHONE_NUMBER);
long callDate = intent.getLongExtra(Notes.INTENT_EXTRA_CALL_DATE, 0);
if (callDate != 0 && phoneNumber != null) {
if (TextUtils.isEmpty(phoneNumber)) {
Log.w(TAG, "The call record number is null");
}
long noteId = 0;
if ((noteId = DataUtils.getNoteIdByPhoneNumberAndCallDate(getContentResolver(),
phoneNumber, callDate)) > 0) {
mWorkingNote = WorkingNote.load(this, noteId);
if (mWorkingNote == null) {
Log.e(TAG, "load call note failed with note id" + noteId);
finish();
return false;
}
//将电话号码与手机的号码簿相关
} else {
mWorkingNote = WorkingNote.createEmptyNote(this, folderId, widgetId,
widgetType, bgResId);
mWorkingNote.convertToCallNote(phoneNumber, callDate);
//
}
} else {
mWorkingNote = WorkingNote.createEmptyNote(this, folderId, widgetId, widgetType,
bgResId);
}//创建一个新的WorkingNote
getWindow().setSoftInputMode(
WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE
| WindowManager.LayoutParams.SOFT_INPUT_STATE_VISIBLE);
} else {
Log.e(TAG, "Intent not specified action, should not support");
finish();
return false;
}
mWorkingNote.setOnSettingStatusChangedListener(this);
return true;
}
@Override
protected void onResume() {
super.onResume();
initNoteScreen();
}
private void initNoteScreen() {
//对界面的初始化操作
mNoteEditor.setTextAppearance(this, TextAppearanceResources
.getTexAppearanceResource(mFontSizeId));
//设置外观
if (mWorkingNote.getCheckListMode() == TextNote.MODE_CHECK_LIST) {
switchToListMode(mWorkingNote.getContent());
} else {
mNoteEditor.setText(getHighlightQueryResult(mWorkingNote.getContent(), mUserQuery));
mNoteEditor.setSelection(mNoteEditor.getText().length());
}
for (Integer id : sBgSelectorSelectionMap.keySet()) {
findViewById(sBgSelectorSelectionMap.get(id)).setVisibility(View.GONE);
}
mHeadViewPanel.setBackgroundResource(mWorkingNote.getTitleBgResId());
mNoteEditorPanel.setBackgroundResource(mWorkingNote.getBgColorResId());
mNoteHeaderHolder.tvModified.setText(DateUtils.formatDateTime(this,
mWorkingNote.getModifiedDate(), DateUtils.FORMAT_SHOW_DATE
| DateUtils.FORMAT_NUMERIC_DATE | DateUtils.FORMAT_SHOW_TIME
| DateUtils.FORMAT_SHOW_YEAR));
/**
* TODO: Add the menu for setting alert. Currently disable it because the DateTimePicker
* is not ready
*/
showAlertHeader();
}
//设置闹钟的显示
private void showAlertHeader() {
if (mWorkingNote.hasClockAlert()) {
long time = System.currentTimeMillis();
if (time > mWorkingNote.getAlertDate()) {
mNoteHeaderHolder.tvAlertDate.setText(R.string.note_alert_expired);
}
//如果系统时间大于了闹钟设置的时间，那么闹钟失效
else {
mNoteHeaderHolder.tvAlertDate.setText(DateUtils.getRelativeTimeSpanString(
mWorkingNote.getAlertDate(), time, DateUtils.MINUTE_IN_MILLIS));
}
mNoteHeaderHolder.tvAlertDate.setVisibility(View.VISIBLE);
mNoteHeaderHolder.ivAlertIcon.setVisibility(View.VISIBLE);
//显示闹钟开启的图标
} else {
mNoteHeaderHolder.tvAlertDate.setVisibility(View.GONE);
mNoteHeaderHolder.ivAlertIcon.setVisibility(View.GONE);
};
}
@Override
protected void onNewIntent(Intent intent) {
super.onNewIntent(intent);
initActivityState(intent);
}
@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
/**
* For new note without note id, we should firstly save it to
* generate a id. If the editing note is not worth saving, there
* is no id which is equivalent to create new note
*/
if (!mWorkingNote.existInDatabase()) {
saveNote();
}
//在创建一个新的标签时，先在数据库中匹配
//如果不存在，那么先在数据库中存储
outState.putLong(Intent.EXTRA_UID, mWorkingNote.getNoteId());
Log.d(TAG, "Save working note id: " + mWorkingNote.getNoteId() + " onSaveInstanceState");
}
@Override
//MotionEvent是对屏幕触控的传递机制
public boolean dispatchTouchEvent(MotionEvent ev) {
if (mNoteBgColorSelector.getVisibility() == View.VISIBLE
&& !inRangeOfView(mNoteBgColorSelector, ev)) {
mNoteBgColorSelector.setVisibility(View.GONE);
return true;
}//颜色选择器在屏幕上可见
if (mFontSizeSelector.getVisibility() == View.VISIBLE
&& !inRangeOfView(mFontSizeSelector, ev)) {
mFontSizeSelector.setVisibility(View.GONE);
return true;
}//字体大小选择器在屏幕上可见
return super.dispatchTouchEvent(ev);
}
//对屏幕触控的坐标进行操作
private boolean inRangeOfView(View view, MotionEvent ev) {
int []location = new int[2];
view.getLocationOnScreen(location);
int x = location[0];
int y = location[1];
if (ev.getX() < x
|| ev.getX() > (x + view.getWidth())
|| ev.getY() < y
|| ev.getY() > (y + view.getHeight()))
//如果触控的位置超出了给定的范围，返回false
{
return false;
}
return true;
}
private void initResources() {
mHeadViewPanel = findViewById(R.id.note_title);
mNoteHeaderHolder = new HeadViewHolder();
mNoteHeaderHolder.tvModified = (TextView) findViewById(R.id.tv_modified_date);
mNoteHeaderHolder.ivAlertIcon = (ImageView) findViewById(R.id.iv_alert_icon);
mNoteHeaderHolder.tvAlertDate = (TextView) findViewById(R.id.tv_alert_date);
mNoteHeaderHolder.ibSetBgColor = (ImageView) findViewById(R.id.btn_set_bg_color);
mNoteHeaderHolder.ibSetBgColor.setOnClickListener(this);
mNoteEditor = (EditText) findViewById(R.id.note_edit_view);
mNoteEditorPanel = findViewById(R.id.sv_note_edit);
mNoteBgColorSelector = findViewById(R.id.note_bg_color_selector);
for (int id : sBgSelectorBtnsMap.keySet()) {
ImageView iv = (ImageView) findViewById(id);
iv.setOnClickListener(this);
}//对标签各项属性内容的初始化
mFontSizeSelector = findViewById(R.id.font_size_selector);
for (int id : sFontSizeBtnsMap.keySet()) {
View view = findViewById(id);
view.setOnClickListener(this);
};//对字体大小的选择
mSharedPrefs = PreferenceManager.getDefaultSharedPreferences(this);
mFontSizeId = mSharedPrefs.getInt(PREFERENCE_FONT_SIZE, ResourceParser.BG_DEFAULT_FONT_SIZE);
/**
* HACKME: Fix bug of store the resource id in shared preference.
* The id may larger than the length of resources, in this case,
* return the {@link ResourceParser#BG_DEFAULT_FONT_SIZE}
*/
if(mFontSizeId >= TextAppearanceResources.getResourcesSize()) {
mFontSizeId = ResourceParser.BG_DEFAULT_FONT_SIZE;
}
mEditTextList = (LinearLayout) findViewById(R.id.note_edit_list);
}
@Override
protected void onPause() {
super.onPause();
if(saveNote()) {
Log.d(TAG, "Note data was saved with length:" + mWorkingNote.getContent().length());
}
clearSettingState();
}
//和桌面小工具的同步
private void updateWidget() {
Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_UPDATE);
if (mWorkingNote.getWidgetType() == Notes.TYPE_WIDGET_2X) {
intent.setClass(this, NoteWidgetProvider_2x.class);
} else if (mWorkingNote.getWidgetType() == Notes.TYPE_WIDGET_4X) {
intent.setClass(this, NoteWidgetProvider_4x.class);
} else {
Log.e(TAG, "Unspported widget type");
return;
}
intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, new int[] {
mWorkingNote.getWidgetId()
});
sendBroadcast(intent);
setResult(RESULT_OK, intent);
}
public void onClick(View v) {
int id = v.getId();
if (id == R.id.btn_set_bg_color) {
mNoteBgColorSelector.setVisibility(View.VISIBLE);
findViewById(sBgSelectorSelectionMap.get(mWorkingNote.getBgColorId())).setVisibility(
- View.VISIBLE);
} else if (sBgSelectorBtnsMap.containsKey(id)) {
findViewById(sBgSelectorSelectionMap.get(mWorkingNote.getBgColorId())).setVisibility(
View.GONE);
mWorkingNote.setBgColorId(sBgSelectorBtnsMap.get(id));
mNoteBgColorSelector.setVisibility(View.GONE);
} else if (sFontSizeBtnsMap.containsKey(id)) {
findViewById(sFontSelectorSelectionMap.get(mFontSizeId)).setVisibility(View.GONE);
mFontSizeId = sFontSizeBtnsMap.get(id);
mSharedPrefs.edit().putInt(PREFERENCE_FONT_SIZE, mFontSizeId).commit();
findViewById(sFontSelectorSelectionMap.get(mFontSizeId)).setVisibility(View.VISIBLE);
if (mWorkingNote.getCheckListMode() == TextNote.MODE_CHECK_LIST) {
getWorkingText();
switchToListMode(mWorkingNote.getContent());
} else {
mNoteEditor.setTextAppearance(this,
TextAppearanceResources.getTexAppearanceResource(mFontSizeId));
}
mFontSizeSelector.setVisibility(View.GONE);
}
}//************************存在问题
@Override
public void onBackPressed() {
if(clearSettingState()) {
return;
}
saveNote();
super.onBackPressed();
}
private boolean clearSettingState() {
if (mNoteBgColorSelector.getVisibility() == View.VISIBLE) {
mNoteBgColorSelector.setVisibility(View.GONE);
return true;
} else if (mFontSizeSelector.getVisibility() == View.VISIBLE) {
mFontSizeSelector.setVisibility(View.GONE);
return true;
}
return false;
}
public void onBackgroundColorChanged() {
findViewById(sBgSelectorSelectionMap.get(mWorkingNote.getBgColorId())).setVisibility(
View.VISIBLE);
mNoteEditorPanel.setBackgroundResource(mWorkingNote.getBgColorResId());
mHeadViewPanel.setBackgroundResource(mWorkingNote.getTitleBgResId());
}
@Override
//对选择菜单的准备
public boolean onPrepareOptionsMenu(Menu menu) {
if (isFinishing()) {
return true;
}
clearSettingState();
menu.clear();
if (mWorkingNote.getFolderId() == Notes.ID_CALL_RECORD_FOLDER) {
getMenuInflater().inflate(R.menu.call_note_edit, menu);
// MenuInflater是用来实例化Menu目录下的Menu布局文件的
} else {
getMenuInflater().inflate(R.menu.note_edit, menu);
}
if (mWorkingNote.getCheckListMode() == TextNote.MODE_CHECK_LIST) {
menu.findItem(R.id.menu_list_mode).setTitle(R.string.menu_normal_mode);
} else {
menu.findItem(R.id.menu_list_mode).setTitle(R.string.menu_list_mode);
}
if (mWorkingNote.hasClockAlert()) {
menu.findItem(R.id.menu_alert).setVisible(false);
} else {
menu.findItem(R.id.menu_delete_remind).setVisible(false);
}
return true;
}
@Override
/*
* 函数功能：动态改变菜单选项内容
* 函数实现：如下注释
*/
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
//根据菜单的id来编剧相关项目
case R.id.menu_new_note:
//创建一个新的便签
createNewNote();
break;
case R.id.menu_delete:
//删除便签
AlertDialog.Builder builder = new AlertDialog.Builder(this);
//创建关于删除操作的对话框
builder.setTitle(getString(R.string.alert_title_delete));
// 设置标签的标题为alert_title_delete
builder.setIcon(android.R.drawable.ic_dialog_alert);
//设置对话框图标
builder.setMessage(getString(R.string.alert_message_delete_note));
//设置对话框内容
builder.setPositiveButton(android.R.string.ok,
new DialogInterface.OnClickListener() {
//建立按键监听器
public void onClick(DialogInterface dialog, int which) {
//点击所触发事件
deleteCurrentNote();
// 删除单签便签
finish();
}
});
//添加“YES”按钮
builder.setNegativeButton(android.R.string.cancel, null);
//添加“NO”的按钮
builder.show();
//显示对话框
break;
case R.id.menu_font_size:
//字体大小的编辑
mFontSizeSelector.setVisibility(View.VISIBLE);
// 将字体选择器置为可见
findViewById(sFontSelectorSelectionMap.get(mFontSizeId)).setVisibility(View.VISIBLE);
// 通过id找到相应的大小
break;
case R.id.menu_list_mode:
//选择列表模式
mWorkingNote.setCheckListMode(mWorkingNote.getCheckListMode() == 0 ?
TextNote.MODE_CHECK_LIST : 0);
break;
case R.id.menu_share:
//菜单共享
getWorkingText();
sendTo(this, mWorkingNote.getContent());
// 用sendto函数将运行文本发送到遍历的本文内
break;
case R.id.menu_send_to_desktop:
//发送到桌面
sendToDesktop();
break;
case R.id.menu_alert:
//创建提醒器
setReminder();
break;
case R.id.menu_delete_remind:
//删除日期提醒
mWorkingNote.setAlertDate(0, false);
break;
default:
break;
}
return true;
}
/*
* 函数功能：建立事件提醒器
* 函数实现：如下注释
*/
private void setReminder() {
DateTimePickerDialog d = new DateTimePickerDialog(this, System.currentTimeMillis());
// 建立修改时间日期的对话框
d.setOnDateTimeSetListener(new OnDateTimeSetListener() {
public void OnDateTimeSet(AlertDialog dialog, long date) {
mWorkingNote.setAlertDate(date , true);
//选择提醒的日期
}
});
//建立时间日期的监听器
d.show();
//显示对话框
}
/**
* Share note to apps that support {@link Intent#ACTION_SEND} action
* and {@text/plain} type
*/
/*
* 函数功能：共享便签
* 函数实现：如下注释
*/
private void sendTo(Context context, String info) {
Intent intent = new Intent(Intent.ACTION_SEND);
//建立intent链接选项
intent.putExtra(Intent.EXTRA_TEXT, info);
//将需要传递的便签信息放入text文件中
intent.setType("text/plain");
//编辑连接器的类型
context.startActivity(intent);
//在acti中进行链接
}
/*
* 函数功能：创建一个新的便签
* 函数实现：如下注释
*/
private void createNewNote() {
// Firstly, save current editing notes
//保存当前便签
saveNote();
// For safety, start a new NoteEditActivity
finish();
Intent intent = new Intent(this, NoteEditActivity.class);
//设置链接器
intent.setAction(Intent.ACTION_INSERT_OR_EDIT);
//该活动定义为创建或编辑
intent.putExtra(Notes.INTENT_EXTRA_FOLDER_ID, mWorkingNote.getFolderId());
//将运行便签的id添加到INTENT_EXTRA_FOLDER_ID标记中
startActivity(intent);
//开始activity并链接
}
/*
* 函数功能：删除当前便签
* 函数实现：如下注释
*/
private void deleteCurrentNote() {
if (mWorkingNote.existInDatabase()) {
//假如当前运行的便签内存有数据
HashSet<Long> ids = new HashSet<Long>();
long id = mWorkingNote.getNoteId();
if (id != Notes.ID_ROOT_FOLDER) {
ids.add(id);
//如果不是头文件夹建立一个hash表把便签id存起来
} else {
Log.d(TAG, "Wrong note id, should not happen");
//否则报错
}
if (!isSyncMode()) {
//在非同步模式情况下
//删除操作
if (!DataUtils.batchDeleteNotes(getContentResolver(), ids)) {
Log.e(TAG, "Delete Note error");
}
} else {
//同步模式
//移动至垃圾文件夹的操作
if (!DataUtils.batchMoveToFolder(getContentResolver(), ids, Notes.ID_TRASH_FOLER)) {
Log.e(TAG, "Move notes to trash folder error, should not happens");
}
}
}
mWorkingNote.markDeleted(true);
//将这些标签的删除标记置为true
}
/*
* 函数功能：判断是否为同步模式
* 函数实现：直接看NotesPreferenceActivity中同步名称是否为空
*/
private boolean isSyncMode() {
return NotesPreferenceActivity.getSyncAccountName(this).trim().length() > 0;
}
/*
* 函数功能：设置提醒时间
* 函数实现：如下注释
*/
public void onClockAlertChanged(long date, boolean set) {
/**
* User could set clock to an unsaved note, so before setting the
* alert clock, we should save the note first
*/
if (!mWorkingNote.existInDatabase()) {
//首先保存已有的便签
saveNote();
}
if (mWorkingNote.getNoteId() > 0) {
Intent intent = new Intent(this, AlarmReceiver.class);
intent.setData(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, mWorkingNote.getNoteId()));
//若有有运行的便签就是建立一个链接器将标签id都存在uri中
PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0, intent, 0);
AlarmManager alarmManager = ((AlarmManager) getSystemService(ALARM_SERVICE));
//设置提醒管理器
showAlertHeader();
if(!set) {
alarmManager.cancel(pendingIntent);
} else {
alarmManager.set(AlarmManager.RTC_WAKEUP, date, pendingIntent);
}
//如果用户设置了时间，就通过提醒管理器设置一个监听事项
} else {
/**
* There is the condition that user has input nothing (the note is
* not worthy saving), we have no note id, remind the user that he
* should input something
*/
//没有运行的便签就报错
Log.e(TAG, "Clock alert setting error");
showToast(R.string.error_note_empty_for_clock);
}
}
/*
* 函数功能：Widget发生改变的所触发的事件
*/
public void onWidgetChanged() {
updateWidget();//更新Widget
}
/*
* 函数功能： 删除编辑文本框所触发的事件
* 函数实现：如下注释
*/
public void onEditTextDelete(int index, String text) {
int childCount = mEditTextList.getChildCount();
if (childCount == 1) {
return;
}
//没有编辑框的话直接返回
for (int i = index + 1; i < childCount; i++) {
((NoteEditText) mEditTextList.getChildAt(i).findViewById(R.id.et_edit_text))
.setIndex(i - 1);
//通过id把编辑框存在便签编辑框中
}
mEditTextList.removeViewAt(index);
//删除特定位置的视图
NoteEditText edit = null;
if(index == 0) {
edit = (NoteEditText) mEditTextList.getChildAt(0).findViewById(
R.id.et_edit_text);
} else {
edit = (NoteEditText) mEditTextList.getChildAt(index - 1).findViewById(
R.id.et_edit_text);
}
//通过id把编辑框存在空的NoteEditText中
int length = edit.length();
edit.append(text);
edit.requestFocus();//请求优先完成该此 编辑
edit.setSelection(length);//定位到length位置处的条目
}
/*
* 函数功能：进入编辑文本框所触发的事件
* 函数实现：如下注释
*/
public void onEditTextEnter(int index, String text) {
/**
* Should not happen, check for debug
*/
if(index > mEditTextList.getChildCount()) {
Log.e(TAG, "Index out of mEditTextList boundrary, should not happen");
//越界把偶偶
}
View view = getListItem(text, index);
mEditTextList.addView(view, index);
//建立一个新的视图并添加到编辑文本框内
NoteEditText edit = (NoteEditText) view.findViewById(R.id.et_edit_text);
edit.requestFocus();//请求优先操作
edit.setSelection(0);//定位到起始位置
for (int i = index + 1; i < mEditTextList.getChildCount(); i++) {
((NoteEditText) mEditTextList.getChildAt(i).findViewById(R.id.et_edit_text))
.setIndex(i);
//遍历子文本框并设置对应对下标
}
}
/*
* 函数功能：切换至列表模式
* 函数实现：如下注释
*/
private void switchToListMode(String text) {
mEditTextList.removeAllViews();
String[] items = text.split("\n");
int index = 0;
//清空所有视图，初始化下标
for (String item : items) {
if(!TextUtils.isEmpty(item)) {
mEditTextList.addView(getListItem(item, index));
index++;
//遍历所有文本单元并添加到文本框中
}
}
mEditTextList.addView(getListItem("", index));
mEditTextList.getChildAt(index).findViewById(R.id.et_edit_text).requestFocus();
//优先请求此操作
mNoteEditor.setVisibility(View.GONE);
//便签编辑器不可见
mEditTextList.setVisibility(View.VISIBLE);
//将文本编辑框置为可见
}
/*
* 函数功能：获取高亮效果的反馈情况
* 函数实现：如下注释
*/
private Spannable getHighlightQueryResult(String fullText, String userQuery) {
SpannableString spannable = new SpannableString(fullText == null ? "" : fullText);
//新建一个效果选项
if (!TextUtils.isEmpty(userQuery)) {
mPattern = Pattern.compile(userQuery);
//将用户的询问进行解析
Matcher m = mPattern.matcher(fullText);
//建立一个状态机检查Pattern并进行匹配
int start = 0;
while (m.find(start)) {
spannable.setSpan(
new BackgroundColorSpan(this.getResources().getColor(
R.color.user_query_highlight)), m.start(), m.end(),
Spannable.SPAN_INCLUSIVE_EXCLUSIVE);
//设置背景颜色
start = m.end();
//跟新起始位置
}
}
return spannable;
}
/*
* 函数功能：获取列表项
* 函数实现：如下注释
*/
private View getListItem(String item, int index) {
View view = LayoutInflater.from(this).inflate(R.layout.note_edit_list_item, null);
//创建一个视图
final NoteEditText edit = (NoteEditText) view.findViewById(R.id.et_edit_text);
edit.setTextAppearance(this, TextAppearanceResources.getTexAppearanceResource(mFontSizeId));
//创建一个文本编辑框并设置可见性
CheckBox cb = ((CheckBox) view.findViewById(R.id.cb_edit_item));
cb.setOnCheckedChangeListener(new OnCheckedChangeListener() {
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
if (isChecked) {
edit.setPaintFlags(edit.getPaintFlags() | Paint.STRIKE_THRU_TEXT_FLAG);
} else {
edit.setPaintFlags(Paint.ANTI_ALIAS_FLAG | Paint.DEV_KERN_TEXT_FLAG);
}
}
});
//建立一个打钩框并设置监听器
if (item.startsWith(TAG_CHECKED)) {
//选择勾选
cb.setChecked(true);
edit.setPaintFlags(edit.getPaintFlags() | Paint.STRIKE_THRU_TEXT_FLAG);
item = item.substring(TAG_CHECKED.length(), item.length()).trim();
} else if (item.startsWith(TAG_UNCHECKED)) {
//选择不勾选
cb.setChecked(false);
edit.setPaintFlags(Paint.ANTI_ALIAS_FLAG | Paint.DEV_KERN_TEXT_FLAG);
item = item.substring(TAG_UNCHECKED.length(), item.length()).trim();
}
edit.setOnTextViewChangeListener(this);
edit.setIndex(index);
edit.setText(getHighlightQueryResult(item, mUserQuery));
//运行编辑框的监听器对该行为作出反应，并设置下标及文本内容
return view;
}
/*
* 函数功能：便签内容发生改变所 触发的事件
* 函数实现：如下注释
*/
public void onTextChange(int index, boolean hasText) {
if (index >= mEditTextList.getChildCount()) {
Log.e(TAG, "Wrong index, should not happen");
return;
//越界报错
}
if(hasText) {
mEditTextList.getChildAt(index).findViewById(R.id.cb_edit_item).setVisibility(View.VISIBLE);
} else {
mEditTextList.getChildAt(index).findViewById(R.id.cb_edit_item).setVisibility(View.GONE);
}
//如果内容不为空则将其子编辑框可见性置为可见，否则不可见
}
/*
* 函数功能：检查模式和列表模式的切换
* 函数实现：如下注释
*/
public void onCheckListModeChanged(int oldMode, int newMode) {
if (newMode == TextNote.MODE_CHECK_LIST) {
switchToListMode(mNoteEditor.getText().toString());
//检查模式切换到列表模式
} else {
if (!getWorkingText()) {
mWorkingNote.setWorkingText(mWorkingNote.getContent().replace(TAG_UNCHECKED + " ",
""));
}
//若是获取到文本就改变其检查标记
mNoteEditor.setText(getHighlightQueryResult(mWorkingNote.getContent(), mUserQuery));
mEditTextList.setVisibility(View.GONE);
mNoteEditor.setVisibility(View.VISIBLE);
//修改文本编辑器的内容和可见性
}
}
/*
* 函数功能：设置勾选选项表并返回是否勾选的标记
* 函数实现：如下注释
*/
private boolean getWorkingText() {
boolean hasChecked = false;
//初始化check标记
if (mWorkingNote.getCheckListMode() == TextNote.MODE_CHECK_LIST) {
// 若模式为CHECK_LIST
StringBuilder sb = new StringBuilder();
//创建可变字符串
for (int i = 0; i < mEditTextList.getChildCount(); i++) {
View view = mEditTextList.getChildAt(i);
//遍历所有子编辑框的视图
NoteEditText edit = (NoteEditText) view.findViewById(R.id.et_edit_text);
if (!TextUtils.isEmpty(edit.getText())) {
//若文本不为空
if (((CheckBox) view.findViewById(R.id.cb_edit_item)).isChecked()) {
//该选项框已打钩
sb.append(TAG_CHECKED).append(" ").append(edit.getText()).append("\n");
hasChecked = true;
//扩展字符串为已打钩并把标记置true
} else {
sb.append(TAG_UNCHECKED).append(" ").append(edit.getText()).append("\n");
//扩展字符串添加未打钩
}
}
}
mWorkingNote.setWorkingText(sb.toString());
//利用编辑好的字符串设置运行便签的内容
} else {
mWorkingNote.setWorkingText(mNoteEditor.getText().toString());
// 若不是该模式直接用编辑器中的内容设置运行中标签的内容
}
return hasChecked;
}
/*
* 函数功能：保存便签
* 函数实现：如下注释
*/
private boolean saveNote() {
getWorkingText();
boolean saved = mWorkingNote.saveNote();
//运行 getWorkingText()之后保存
if (saved) {
/**
* There are two modes from List view to edit view, open one note,
* create/edit a node. Opening node requires to the original
* position in the list when back from edit view, while creating a
* new node requires to the top of the list. This code
* {@link #RESULT_OK} is used to identify the create/edit state
*/
//如英文注释所说链接RESULT_OK是为了识别保存的2种情况，一是创建后保存，二是修改后保存
setResult(RESULT_OK);
}
return saved;
}
/*
* 函数功能：将便签发送至桌面
* 函数实现：如下注释
*/
private void sendToDesktop() {
/**
* Before send message to home, we should make sure that current
* editing note is exists in databases. So, for new note, firstly
* save it
*/
if (!mWorkingNote.existInDatabase()) {
saveNote();
//若不存在数据也就是新的标签就保存起来先
}
if (mWorkingNote.getNoteId() > 0) {
//若是有内容
Intent sender = new Intent();
Intent shortcutIntent = new Intent(this, NoteEditActivity.class);
//建立发送到桌面的连接器
shortcutIntent.setAction(Intent.ACTION_VIEW);
//链接为一个视图
shortcutIntent.putExtra(Intent.EXTRA_UID, mWorkingNote.getNoteId());
sender.putExtra(Intent.EXTRA_SHORTCUT_INTENT, shortcutIntent);
sender.putExtra(Intent.EXTRA_SHORTCUT_NAME,
makeShortcutIconTitle(mWorkingNote.getContent()));
sender.putExtra(Intent.EXTRA_SHORTCUT_ICON_RESOURCE,
Intent.ShortcutIconResource.fromContext(this, R.drawable.icon_app));
sender.putExtra("duplicate", true);
//将便签的相关信息都添加到要发送的文件里
sender.setAction("com.android.launcher.action.INSTALL_SHORTCUT");
//设置sneder的行为是发送
showToast(R.string.info_note_enter_desktop);
sendBroadcast(sender);
//显示到桌面
} else {
/**
* There is the condition that user has input nothing (the note is
* not worthy saving), we have no note id, remind the user that he
* should input something
*/
Log.e(TAG, "Send to desktop error");
showToast(R.string.error_note_empty_for_send_to_desktop);
//空便签直接报错
}
}
/*
* 函数功能：编辑小图标的标题
* 函数实现：如下注释
*/
private String makeShortcutIconTitle(String content) {
content = content.replace(TAG_CHECKED, "");
content = content.replace(TAG_UNCHECKED, "");
return content.length() > SHORTCUT_ICON_TITLE_MAX_LEN ? content.substring(0,
SHORTCUT_ICON_TITLE_MAX_LEN) : content;
//直接设置为content中的内容并返回，有勾选和未勾选2种
}
/*
* 函数功能：显示提示的视图
* 函数实现：根据下标显示对应的提示
*/
private void showToast(int resId) {
showToast(resId, Toast.LENGTH_SHORT);
}
/*
* 函数功能：持续显示提示的视图
* 函数实现：根据下标和持续的时间（duration）编辑提示视图并显示
*/
private void showToast(int resId, int duration) {
Toast.makeText(this, resId, duration).show();
}
}
9、NoteEditText.java
package net.micode.notes.ui;
import android.content.Context;
import android.graphics.Rect;
import android.text.Layout;
import android.text.Selection;
import android.text.Spanned;
import android.text.TextUtils;
import android.text.style.URLSpan;
import android.util.AttributeSet;
import android.util.Log;
import android.view.ContextMenu;
import android.view.KeyEvent;
import android.view.MenuItem;
import android.view.MenuItem.OnMenuItemClickListener;
import android.view.MotionEvent;
import android.widget.EditText;
import net.micode.notes.R;
import java.util.HashMap;
import java.util.Map;
//继承edittext，设置便签设置文本框
public class NoteEditText extends EditText {
private static final String TAG = "NoteEditText";
private int mIndex;
private int mSelectionStartBeforeDelete;
private static final String SCHEME_TEL = "tel:" ;
private static final String SCHEME_HTTP = "http:" ;
private static final String SCHEME_EMAIL = "mailto:" ;
///建立一个字符和整数的hash表，用于链接电话，网站，还有邮箱
private static final Map<String, Integer> sSchemaActionResMap = new HashMap<String, Integer>();
static {
sSchemaActionResMap.put(SCHEME_TEL, R.string.note_link_tel);
sSchemaActionResMap.put(SCHEME_HTTP, R.string.note_link_web);
sSchemaActionResMap.put(SCHEME_EMAIL, R.string.note_link_email);
}
/**
* Call by the {@link NoteEditActivity} to delete or add edit text
*/
//在NoteEditActivity中删除或添加文本的操作，可以看做是一个文本是否被变的标记，英文注释已说明的很清楚
public interface OnTextViewChangeListener {
/**
* Delete current edit text when {@link KeyEvent#KEYCODE_DEL} happens
* and the text is null
*/
//处理删除按键时的操作
void onEditTextDelete(int index, String text);
/**
* Add edit text after current edit text when {@link KeyEvent#KEYCODE_ENTER}
* happen
*/
//处理进入按键时的操作
void onEditTextEnter(int index, String text);
/**
* Hide or show item option when text change
*/
void onTextChange(int index, boolean hasText);
}
private OnTextViewChangeListener mOnTextViewChangeListener;
//根据context设置文本
public NoteEditText(Context context) {
super(context, null);//用super引用父类变量
mIndex = 0;
}
//设置当前光标
public void setIndex(int index) {
mIndex = index;
}
//初始化文本修改标记
public void setOnTextViewChangeListener(OnTextViewChangeListener listener) {
mOnTextViewChangeListener = listener;
}
//AttributeSet 百度了一下是自定义空控件属性，用于维护便签动态变化的属性
//初始化便签
public NoteEditText(Context context, AttributeSet attrs) {
super(context, attrs, android.R.attr.editTextStyle);
}
// 根据defstyle自动初始化
public NoteEditText(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
// TODO Auto-generated construct or stub
}
@Override
//view里的函数，处理手机屏幕的所有事件
/*参数event为手机屏幕触摸事件封装类的对象，其中封装了该事件的所有信息，
例如触摸的位置、触摸的类型以及触摸的时间等。该对象会在用户触摸手机屏幕时被创建。*/
public boolean onTouchEvent(MotionEvent event) {
switch (event.getAction()) {
//重写了需要处理屏幕被按下的事件
case MotionEvent.ACTION_DOWN:
//跟新当前坐标值
int x = (int) event.getX();
int y = (int) event.getY();
x -= getTotalPaddingLeft();
y -= getTotalPaddingTop();
x += getScrollX();
y += getScrollY();
//用布局控件layout根据x,y的新值设置新的位置
Layout layout = getLayout();
int line = layout.getLineForVertical(y);
int off = layout.getOffsetForHorizontal(line, x);
//更新光标新的位置
Selection.setSelection(getText(), off);
break;
}
return super.onTouchEvent(event);
}
@Override
/*
* 函数功能：处理用户按下一个键盘按键时会触发 的事件
* 实现过程：如下注释
*/
public boolean onKeyDown(int keyCode, KeyEvent event) {
switch (keyCode) {
//根据按键的 Unicode 编码值来处理
case KeyEvent.KEYCODE_ENTER:
//“进入”按键
if (mOnTextViewChangeListener != null) {
return false;
}
break;
case KeyEvent.KEYCODE_DEL:
//“删除”按键
mSelectionStartBeforeDelete = getSelectionStart();
break;
default:
break;
}
//继续执行父类的其他点击事件
return super.onKeyDown(keyCode, event);
}
@Override
/*
* 函数功能：处理用户松开一个键盘按键时会触发 的事件
* 实现方式：如下注释
*/
public boolean onKeyUp(int keyCode, KeyEvent event) {
switch(keyCode) {
//根据按键的 Unicode 编码值来处理，有删除和进入2种操作
case KeyEvent.KEYCODE_DEL:
if (mOnTextViewChangeListener != null) {
//若是被修改过
if (0 == mSelectionStartBeforeDelete && mIndex != 0) {
//若之前有被修改并且文档不为空
mOnTextViewChangeListener.onEditTextDelete(mIndex, getText().toString());
//利用上文OnTextViewChangeListener对KEYCODE_DEL按键情况的删除函数进行删除
return true;
}
} else {
Log.d(TAG, "OnTextViewChangeListener was not seted");
//其他情况报错，文档的改动监听器并没有建立
}
break;
case KeyEvent.KEYCODE_ENTER:
//同上也是分为监听器是否建立2种情况
if (mOnTextViewChangeListener != null) {
int selectionStart = getSelectionStart();
//获取当前位置
String text = getText().subSequence(selectionStart, length()).toString();
//获取当前文本
setText(getText().subSequence(0, selectionStart));
//根据获取的文本设置当前文本
mOnTextViewChangeListener.onEditTextEnter(mIndex + 1, text);
//当{@link KeyEvent#KEYCODE_ENTER}添加新文本
} else {
Log.d(TAG, "OnTextViewChangeListener was not seted");
//其他情况报错，文档的改动监听器并没有建立
}
break;
default:
break;
}
//继续执行父类的其他按键弹起的事件
return super.onKeyUp(keyCode, event);
}
@Override
/*
* 函数功能：当焦点发生变化时，会自动调用该方法来处理焦点改变的事件
* 实现方式：如下注释
* 参数：focused表示触发该事件的View是否获得了焦点，当该控件获得焦点时，Focused等于true，否则等于false。
direction表示焦点移动的方向，用数值表示
Rect：表示在触发事件的View的坐标系中，前一个获得焦点的矩形区域，即表示焦点是从哪里来的。如果不可用则为null
*/
protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {
if (mOnTextViewChangeListener != null) {
//若监听器已经建立
if (!focused && TextUtils.isEmpty(getText())) {
//获取到焦点并且文本不为空
mOnTextViewChangeListener.onTextChange(mIndex, false);
//mOnTextViewChangeListener子函数，置false隐藏事件选项
} else {
mOnTextViewChangeListener.onTextChange(mIndex, true);
//mOnTextViewChangeListener子函数，置true显示事件选项
}
}
//继续执行父类的其他焦点变化的事件
super.onFocusChanged(focused, direction, previouslyFocusedRect);
}
@Override
/*
* 函数功能：生成上下文菜单
* 函数实现：如下注释
*/
protected void onCreateContextMenu(ContextMenu menu) {
if (getText() instanceof Spanned) {
//有文本存在
int selStart = getSelectionStart();
int selEnd = getSelectionEnd();
//获取文本开始和结尾位置
int min = Math.min(selStart, selEnd);
int max = Math.max(selStart, selEnd);
//获取开始到结尾的最大值和最小值
final URLSpan[] urls = ((Spanned) getText()).getSpans(min, max, URLSpan.class);
//设置url的信息的范围值
if (urls.length == 1) {
int defaultResId = 0;
for(String schema: sSchemaActionResMap.keySet()) {
//获取计划表中所有的key值
if(urls[0].getURL().indexOf(schema) >= 0) {
//若url可以添加则在添加后将defaultResId置为key所映射的值
defaultResId = sSchemaActionResMap.get(schema);
break;
}
}
if (defaultResId == 0) {
//defaultResId == 0则说明url并没有添加任何东西，所以置为连接其他SchemaActionResMap的值
defaultResId = R.string.note_link_other;
}
//建立菜单
menu.add(0, 0, 0, defaultResId).setOnMenuItemClickListener(
new OnMenuItemClickListener() {
//新建按键监听器
public boolean onMenuItemClick(MenuItem item) {
// goto a new intent
urls[0].onClick(NoteEditText.this);
//根据相应的文本设置菜单的按键
return true;
}
});
}
}
//继续执行父类的其他菜单创建的事件
super.onCreateContextMenu(menu);
}
}10、NoteItemData.java
package net.micode.notes.ui;
import android.content.Context;
import android.database.Cursor;
import android.text.TextUtils;
import net.micode.notes.data.Contact;
import net.micode.notes.data.Notes;
import net.micode.notes.data.Notes.NoteColumns;
import net.micode.notes.tool.DataUtils;
public class NoteItemData {
static final String [] PROJECTION = new String [] {
NoteColumns.ID,
NoteColumns.ALERTED_DATE,
NoteColumns.BG_COLOR_ID,
NoteColumns.CREATED_DATE,
NoteColumns.HAS_ATTACHMENT,
NoteColumns.MODIFIED_DATE,
NoteColumns.NOTES_COUNT,
NoteColumns.PARENT_ID,
NoteColumns.SNIPPET,
NoteColumns.TYPE,
NoteColumns.WIDGET_ID,
NoteColumns.WIDGET_TYPE,
};
//常量标记和数据就不一一标记了，意义翻译基本就知道
private static final int ID_COLUMN = 0;
private static final int ALERTED_DATE_COLUMN = 1;
private static final int BG_COLOR_ID_COLUMN = 2;
private static final int CREATED_DATE_COLUMN = 3;
private static final int HAS_ATTACHMENT_COLUMN = 4;
private static final int MODIFIED_DATE_COLUMN = 5;
private static final int NOTES_COUNT_COLUMN = 6;
private static final int PARENT_ID_COLUMN = 7;
private static final int SNIPPET_COLUMN = 8;
private static final int TYPE_COLUMN = 9;
private static final int WIDGET_ID_COLUMN = 10;
private static final int WIDGET_TYPE_COLUMN = 11;
private long mId;
private long mAlertDate;
private int mBgColorId;
private long mCreatedDate;
private boolean mHasAttachment;
private long mModifiedDate;
private int mNotesCount;
private long mParentId;
private String mSnippet;
private int mType;
private int mWidgetId;
private int mWidgetType;
private String mName;
private String mPhoneNumber;
private boolean mIsLastItem;
private boolean mIsFirstItem;
private boolean mIsOnlyOneItem;
private boolean mIsOneNoteFollowingFolder;
private boolean mIsMultiNotesFollowingFolder;
//初始化NoteItemData，主要利用光标cursor获取的东西
public NoteItemData(Context context, Cursor cursor) {
//getxxx为转换格式
mId = cursor.getLong(ID_COLUMN);
mAlertDate = cursor.getLong(ALERTED_DATE_COLUMN);
mBgColorId = cursor.getInt(BG_COLOR_ID_COLUMN);
mCreatedDate = cursor.getLong(CREATED_DATE_COLUMN);
mHasAttachment = (cursor.getInt(HAS_ATTACHMENT_COLUMN) > 0) ? true : false;
mModifiedDate = cursor.getLong(MODIFIED_DATE_COLUMN);
mNotesCount = cursor.getInt(NOTES_COUNT_COLUMN);
mParentId = cursor.getLong(PARENT_ID_COLUMN);
mSnippet = cursor.getString(SNIPPET_COLUMN);
mSnippet = mSnippet.replace(NoteEditActivity.TAG_CHECKED, "").replace(
NoteEditActivity.TAG_UNCHECKED, "");
mType = cursor.getInt(TYPE_COLUMN);
mWidgetId = cursor.getInt(WIDGET_ID_COLUMN);
mWidgetType = cursor.getInt(WIDGET_TYPE_COLUMN);
//初始化电话号码的信息
mPhoneNumber = "";
if (mParentId == Notes.ID_CALL_RECORD_FOLDER) {
mPhoneNumber = DataUtils.getCallNumberByNoteId(context.getContentResolver(), mId);
if (!TextUtils.isEmpty(mPhoneNumber)) {//mphonenumber里有符合字符串，则用contart功能连接
mName = Contact.getContact(context, mPhoneNumber);
if (mName == null) {
mName = mPhoneNumber;
}
}
}
if (mName == null) {
mName = "";
}
checkPostion(cursor);
}
///根据鼠标的位置设置标记，和位置
private void checkPostion(Cursor cursor) {
//初始化几个标记，cursor具体功能笔记中已提到，不一一叙述
mIsLastItem = cursor.isLast() ? true : false;
mIsFirstItem = cursor.isFirst() ? true : false;
mIsOnlyOneItem = (cursor.getCount() == 1);
//初始化“多重子文件”“单一子文件”2个标记
mIsMultiNotesFollowingFolder = false;
mIsOneNoteFollowingFolder = false;
//主要是设置上诉2标记
if (mType == Notes.TYPE_NOTE && !mIsFirstItem) {//若是note格式并且不是第一个元素
int position = cursor.getPosition();
if (cursor.moveToPrevious()) {//获取光标位置后看上一行
if (cursor.getInt(TYPE_COLUMN) == Notes.TYPE_FOLDER
|| cursor.getInt(TYPE_COLUMN) == Notes.TYPE_SYSTEM) {//若光标满足系统或note格式
if (cursor.getCount() > (position + 1)) {
mIsMultiNotesFollowingFolder = true;//若是数据行数大于但前位置+1则设置成正确
} else {
mIsOneNoteFollowingFolder = true;//否则单一文件夹标记为true
}
}
if (!cursor.moveToNext()) {//若不能再往下走则报错
throw new IllegalStateException("cursor move to previous but can't move back");
}
}
}
}
///以下都是获取标记没什么好说的，不过倒数第二个需要说明下，很具体看下面
public boolean isOneFollowingFolder() {
return mIsOneNoteFollowingFolder;
}
public boolean isMultiFollowingFolder() {
return mIsMultiNotesFollowingFolder;
}
public boolean isLast() {
return mIsLastItem;
}
public String getCallName() {
return mName;
}
public boolean isFirst() {
return mIsFirstItem;
}
public boolean isSingle() {
return mIsOnlyOneItem;
}
public long getId() {
return mId;
}
public long getAlertDate() {
return mAlertDate;
}
public long getCreatedDate() {
return mCreatedDate;
}
public boolean hasAttachment() {
return mHasAttachment;
}
public long getModifiedDate() {
return mModifiedDate;
}
public int getBgColorId() {
return mBgColorId;
}
public long getParentId() {
return mParentId;
}
public int getNotesCount() {
return mNotesCount;
}
public long getFolderId () {
return mParentId;
}
public int getType() {
return mType;
}
public int getWidgetType() {
return mWidgetType;
}
public int getWidgetId() {
return mWidgetId;
}
public String getSnippet() {
return mSnippet;
}
public boolean hasAlert() {
return (mAlertDate > 0);
}
//若数据父id为保存至文件夹模式的id且满足电话号码单元不为空，则isCallRecord为true
public boolean isCallRecord() {
return (mParentId == Notes.ID_CALL_RECORD_FOLDER && !TextUtils.isEmpty(mPhoneNumber));
}
public static int getNoteType(Cursor cursor) {
return cursor.getInt(TYPE_COLUMN);
}
}
11、NotesListActivity.java
package net.micode.notes.ui;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.appwidget.AppWidgetManager;
import android.content.AsyncQueryHandler;
import android.content.ContentResolver;
import android.content.ContentValues;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.database.Cursor;
import android.os.AsyncTask;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.text.Editable;
import android.text.TextUtils;
import android.text.TextWatcher;
import android.util.Log;
import android.view.ActionMode;
import android.view.ContextMenu;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.Display;
import android.view.HapticFeedbackConstants;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.MenuItem.OnMenuItemClickListener;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.View.OnCreateContextMenuListener;
import android.view.View.OnTouchListener;
import android.view.inputmethod.InputMethodManager;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.AdapterView.OnItemLongClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.PopupMenu;
import android.widget.TextView;
import android.widget.Toast;
import net.micode.notes.R;
import net.micode.notes.data.Notes;
import net.micode.notes.data.Notes.NoteColumns;
import net.micode.notes.gtask.remote.GTaskSyncService;
import net.micode.notes.model.WorkingNote;
import net.micode.notes.tool.BackupUtils;
import net.micode.notes.tool.DataUtils;
import net.micode.notes.tool.ResourceParser;
import net.micode.notes.ui.NotesListAdapter.AppWidgetAttribute;
import net.micode.notes.widget.NoteWidgetProvider_2x;
import net.micode.notes.widget.NoteWidgetProvider_4x;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.HashSet;
//主界面，一进入就是这个界面
/**
* @author k
*
*/
public class NotesListActivity extends Activity implements OnClickListener, OnItemLongClickListener { //没有用特定的标签加注释。。。感觉没有什么用
private static final int FOLDER_NOTE_LIST_QUERY_TOKEN = 0;
private static final int FOLDER_LIST_QUERY_TOKEN = 1;
private static final int MENU_FOLDER_DELETE = 0;
private static final int MENU_FOLDER_VIEW = 1;
private static final int MENU_FOLDER_CHANGE_NAME = 2;
private static final String PREFERENCE_ADD_INTRODUCTION = "net.micode.notes.introduction"; //单行超过80个字符
private enum ListEditState {
NOTE_LIST, SUB_FOLDER, CALL_RECORD_FOLDER
};
private ListEditState mState;
private BackgroundQueryHandler mBackgroundQueryHandler;
private NotesListAdapter mNotesListAdapter;
private ListView mNotesListView;
private Button mAddNewNote;
private boolean mDispatch;
private int mOriginY;
private int mDispatchY;
private TextView mTitleBar;
private long mCurrentFolderId;
private ContentResolver mContentResolver;
private ModeCallback mModeCallBack;
private static final String TAG = "NotesListActivity";
public static final int NOTES_LISTVIEW_SCROLL_RATE = 30;
private NoteItemData mFocusNoteDataItem;
private static final String NORMAL_SELECTION = NoteColumns.PARENT_ID + "=?";
private static final String ROOT_FOLDER_SELECTION = "(" + NoteColumns.TYPE + "<>"
+ Notes.TYPE_SYSTEM + " AND " + NoteColumns.PARENT_ID + "=?)" + " OR ("
+ NoteColumns.ID + "=" + Notes.ID_CALL_RECORD_FOLDER + " AND "
+ NoteColumns.NOTES_COUNT + ">0)";
private final static int REQUEST_CODE_OPEN_NODE = 102;
private final static int REQUEST_CODE_NEW_NODE = 103;
@Override
// 创建类
protected void onCreate(final Bundle savedInstanceState) { //需要是final类型 根据程序上下文环境，Java关键字final有“这是无法改变的”或者“终态的”含义，它可以修饰非抽象类、非抽象类成员方法和变量。你可能出于两种理解而需要阻止改变：设计或效率。
// final类不能被继承，没有子类，final类中的方法默认是final的。
//final方法不能被子类的方法覆盖，但可以被继承。
//final成员变量表示常量，只能被赋值一次，赋值后值不再改变。
//final不能用于修饰构造方法。
super.onCreate(savedInstanceState); // 调用父类的onCreate函数
setContentView(R.layout.note_list);
initResources();
/**
* Insert an introduction when user firstly use this application
*/
setAppInfoFromRawRes();
}
@Override
// 返回一些子模块完成的数据交给主Activity处理
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// 结果值 和 要求值 符合要求
if (resultCode == RESULT_OK
&& (requestCode == REQUEST_CODE_OPEN_NODE || requestCode == REQUEST_CODE_NEW_NODE)) {
mNotesListAdapter.changeCursor(null);
} else {
super.onActivityResult(requestCode, resultCode, data);
// 调用 Activity 的onActivityResult（）
}
}
private void setAppInfoFromRawRes() {
// Android平台给我们提供了一个SharedPreferences类，它是一个轻量级的存储类，特别适合用于保存软件配置参数。
SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(this);
if (!sp.getBoolean(PREFERENCE_ADD_INTRODUCTION, false)) {
StringBuilder sb = new StringBuilder();
InputStream in = null;
try {
// 把资源文件放到应用程序的/raw/raw下，那么就可以在应用中使用getResources获取资源后,
// 以openRawResource方法（不带后缀的资源文件名）打开这个文件。
in = getResources().openRawResource(R.raw.introduction);
if (in != null) {
InputStreamReader isr = new InputStreamReader(in);
BufferedReader br = new BufferedReader(isr);
char [] buf = new char[1024]; // 自行定义的数值，使用者不知道有什么意义
int len = 0;
while ((len = br.read(buf)) > 0) {
sb.append(buf, 0, len);
}
} else {
Log.e(TAG, "Read introduction file error");
return;
}
} catch (IOException e) {
e.printStackTrace();
return;
} finally {
if (in != null) {
try {
in.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
// 创建空的WorkingNote
WorkingNote note = WorkingNote.createEmptyNote(this, Notes.ID_ROOT_FOLDER,
AppWidgetManager.INVALID_APPWIDGET_ID, Notes.TYPE_WIDGET_INVALIDE,
ResourceParser.RED);
note.setWorkingText(sb.toString());
if (note.saveNote()) {
// 更新保存note的信息
sp.edit().putBoolean(PREFERENCE_ADD_INTRODUCTION, true).commit();
} else {
Log.e(TAG, "Save introduction note error");
return;
}
}
}
@Override
protected void onStart() {
super.onStart();
startAsyncNotesListQuery();
}
// 初始化资源
private void initResources() {
mContentResolver = this.getContentResolver(); // 获取应用程序的数据，得到类似数据表的东西
mBackgroundQueryHandler = new BackgroundQueryHandler(this.getContentResolver());
mCurrentFolderId = Notes.ID_ROOT_FOLDER;
// findViewById 是安卓编程的定位函数，主要是引用.R文件里的引用名
mNotesListView = (ListView) findViewById(R.id.notes_list); // 绑定XML中的ListView，作为Item的容器
mNotesListView.addFooterView(LayoutInflater.from(this).inflate(R.layout.note_list_footer, null),
null, false);
mNotesListView.setOnItemClickListener(new OnListItemClickListener());
mNotesListView.setOnItemLongClickListener(this);
mNotesListAdapter = new NotesListAdapter(this);
mNotesListView.setAdapter(mNotesListAdapter);
mAddNewNote = (Button) findViewById(R.id.btn_new_note);// 在activity中要获取该按钮
mAddNewNote.setOnClickListener(this);
mAddNewNote.setOnTouchListener(new NewNoteOnTouchListener());
mDispatch = false;
mDispatchY = 0;
mOriginY = 0;
mTitleBar = (TextView) findViewById(R.id.tv_title_bar);
mState = ListEditState.NOTE_LIST;
mModeCallBack = new ModeCallback();
}
// 继承自ListView.MultiChoiceModeListener 和 OnMenuItemClickListener
private class ModeCallback implements ListView.MultiChoiceModeListener, OnMenuItemClickListener {
private DropdownMenu mDropDownMenu;
private ActionMode mActionMode;
private MenuItem mMoveMenu;
public boolean onCreateActionMode(ActionMode mode, Menu menu) {
getMenuInflater().inflate(R.menu.note_list_options, menu);
menu.findItem(R.id.delete).setOnMenuItemClickListener(this);
mMoveMenu = menu.findItem(R.id.move);
if (mFocusNoteDataItem.getParentId() == Notes.ID_CALL_RECORD_FOLDER
|| DataUtils.getUserFolderCount(mContentResolver) == 0) {
mMoveMenu.setVisible(false);
} else {
mMoveMenu.setVisible(true);
mMoveMenu.setOnMenuItemClickListener(this);
}
mActionMode = mode;
mNotesListAdapter.setChoiceMode(true);
mNotesListView.setLongClickable(false);
mAddNewNote.setVisibility(View.GONE);
View customView = LayoutInflater.from(NotesListActivity.this).inflate(
R.layout.note_list_dropdown_menu, null);
mode.setCustomView(customView);
mDropDownMenu = new DropdownMenu(NotesListActivity.this,
(Button) customView.findViewById(R.id.selection_menu),
R.menu.note_list_dropdown);
mDropDownMenu.setOnDropdownMenuItemClickListener(new PopupMenu.OnMenuItemClickListener(){
public boolean onMenuItemClick(final MenuItem item) {
mNotesListAdapter.selectAll(!mNotesListAdapter.isAllSelected());
updateMenu();
return true;
}
});
return true;
}
// 更新菜单
private void updateMenu() {
int selectedCount = mNotesListAdapter.getSelectedCount();
// Update dropdown menu
String format = getResources().getString(R.string.menu_select_title, selectedCount);
mDropDownMenu.setTitle(format); // 更改标题
MenuItem item = mDropDownMenu.findItem(R.id.action_select_all);
if (item != null) {
if (mNotesListAdapter.isAllSelected()) {
item.setChecked(true);
item.setTitle(R.string.menu_deselect_all);
} else {
item.setChecked(false);
item.setTitle(R.string.menu_select_all);
}
}
}
public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
// TODO Auto-generated method stub
return false;
}
public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
// TODO Auto-generated method stub
return false;
}
public void onDestroyActionMode(ActionMode mode) {
mNotesListAdapter.setChoiceMode(false);
mNotesListView.setLongClickable(true);
mAddNewNote.setVisibility(View.VISIBLE);
}
public void finishActionMode() {
mActionMode.finish();
}
public void onItemCheckedStateChanged(ActionMode mode, int position, long id,
boolean checked) {
mNotesListAdapter.setCheckedItem(position, checked);
updateMenu();
}
public boolean onMenuItemClick(MenuItem item) {
if (mNotesListAdapter.getSelectedCount() == 0) {
Toast.makeText(NotesListActivity.this, getString(R.string.menu_select_none),
Toast.LENGTH_SHORT).show();
return true;
}
switch (item.getItemId()) {
case R.id.delete:
AlertDialog.Builder builder = new AlertDialog.Builder(NotesListActivity.this);
builder.setTitle(getString(R.string.alert_title_delete));
builder.setIcon(android.R.drawable.ic_dialog_alert);
builder.setMessage(getString(R.string.alert_message_delete_notes,
mNotesListAdapter.getSelectedCount()));
builder.setPositiveButton(android.R.string.ok,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,
int which) {
batchDelete();
}
});
builder.setNegativeButton(android.R.string.cancel, null);
builder.show();
break;
case R.id.move:
startQueryDestinationFolders();
break;
default:
return false;
}
return true;
}
}
private class NewNoteOnTouchListener implements OnTouchListener {
public boolean onTouch(View v, MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN: {
Display display = getWindowManager().getDefaultDisplay();
int screenHeight = display.getHeight();
int newNoteViewHeight = mAddNewNote.getHeight();
int start = screenHeight - newNoteViewHeight;
int eventY = start + (int) event.getY();
/**
* Minus TitleBar's height
*/
if (mState == ListEditState.SUB_FOLDER) {
eventY -= mTitleBar.getHeight();
start -= mTitleBar.getHeight();
}
/**
* HACKME:When click the transparent part of "New Note" button, dispatch
* the event to the list view behind this button. The transparent part of
* "New Note" button could be expressed by formula y=-0.12x+94锛圲nit:pixel锛�
* and the line top of the button. The coordinate based on left of the "New
* Note" button. The 94 represents maximum height of the transparent part.
* Notice that, if the background of the button changes, the formula should
* also change. This is very bad, just for the UI designer's strong requirement.
*/
if (event.getY() < (event.getX() * (-0.12) + 94)) {
View view = mNotesListView.getChildAt(mNotesListView.getChildCount() - 1
- mNotesListView.getFooterViewsCount());
if (view != null && view.getBottom() > start
&& (view.getTop() < (start + 94))) {
mOriginY = (int) event.getY();
mDispatchY = eventY;
event.setLocation(event.getX(), mDispatchY);
mDispatch = true;
return mNotesListView.dispatchTouchEvent(event);
}
}
break;
}
case MotionEvent.ACTION_MOVE: {
if (mDispatch) {
mDispatchY += (int) event.getY() - mOriginY;
event.setLocation(event.getX(), mDispatchY);
return mNotesListView.dispatchTouchEvent(event);
}
break;
}
default: {
if (mDispatch) {
event.setLocation(event.getX(), mDispatchY);
mDispatch = false;
return mNotesListView.dispatchTouchEvent(event);
}
break;
}
}
return false;
}
};
private void startAsyncNotesListQuery() {
String selection = (mCurrentFolderId == Notes.ID_ROOT_FOLDER) ? ROOT_FOLDER_SELECTION
: NORMAL_SELECTION;
mBackgroundQueryHandler.startQuery(FOLDER_NOTE_LIST_QUERY_TOKEN, null,
Notes.CONTENT_NOTE_URI, NoteItemData.PROJECTION, selection, new String[] {
String.valueOf(mCurrentFolderId)
}, NoteColumns.TYPE + " DESC," + NoteColumns.MODIFIED_DATE + " DESC");
}
private final class BackgroundQueryHandler extends AsyncQueryHandler {
public BackgroundQueryHandler(ContentResolver contentResolver) {
super(contentResolver);
}
@Override
protected void onQueryComplete(int token, Object cookie, Cursor cursor) {
switch (token) {
case FOLDER_NOTE_LIST_QUERY_TOKEN:
mNotesListAdapter.changeCursor(cursor);
break;
case FOLDER_LIST_QUERY_TOKEN:
if (cursor != null && cursor.getCount() > 0) {
showFolderListMenu(cursor);
} else {
Log.e(TAG, "Query folder failed");
}
break;
default:
return;
}
}
}
private void showFolderListMenu(Cursor cursor) {
AlertDialog.Builder builder = new AlertDialog.Builder(NotesListActivity.this);
builder.setTitle(R.string.menu_title_select_folder);
final FoldersListAdapter adapter = new FoldersListAdapter(this, cursor);
builder.setAdapter(adapter, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
DataUtils.batchMoveToFolder(mContentResolver,
mNotesListAdapter.getSelectedItemIds(), adapter.getItemId(which));
Toast.makeText(
NotesListActivity.this,
getString(R.string.format_move_notes_to_folder,
mNotesListAdapter.getSelectedCount(),
adapter.getFolderName(NotesListActivity.this, which)),
Toast.LENGTH_SHORT).show();
mModeCallBack.finishActionMode();
}
});
builder.show();
}
private void createNewNote() {
Intent intent = new Intent(this, NoteEditActivity.class);
intent.setAction(Intent.ACTION_INSERT_OR_EDIT);
intent.putExtra(Notes.INTENT_EXTRA_FOLDER_ID, mCurrentFolderId);
this.startActivityForResult(intent, REQUEST_CODE_NEW_NODE);
}
private void batchDelete() {
new AsyncTask<Void, Void, HashSet<AppWidgetAttribute>>() {
protected HashSet<AppWidgetAttribute> doInBackground(Void... unused) {
HashSet<AppWidgetAttribute> widgets = mNotesListAdapter.getSelectedWidget();
if (!isSyncMode()) {
// if not synced, delete notes directly
if (DataUtils.batchDeleteNotes(mContentResolver, mNotesListAdapter
.getSelectedItemIds())) {
} else {
Log.e(TAG, "Delete notes error, should not happens");
}
} else {
// in sync mode, we'll move the deleted note into the trash
// folder
if (!DataUtils.batchMoveToFolder(mContentResolver, mNotesListAdapter
.getSelectedItemIds(), Notes.ID_TRASH_FOLER)) {
Log.e(TAG, "Move notes to trash folder error, should not happens");
}
}
return widgets;
}
@Override
protected void onPostExecute(HashSet<AppWidgetAttribute> widgets) {
if (widgets != null) {
for (AppWidgetAttribute widget : widgets) {
if (widget.widgetId != AppWidgetManager.INVALID_APPWIDGET_ID
&& widget.widgetType != Notes.TYPE_WIDGET_INVALIDE) {
updateWidget(widget.widgetId, widget.widgetType);
}
}
}
mModeCallBack.finishActionMode();
}
}.execute();
}
private void deleteFolder(long folderId) {
if (folderId == Notes.ID_ROOT_FOLDER) {
Log.e(TAG, "Wrong folder id, should not happen " + folderId);
return;
}
HashSet<Long> ids = new HashSet<Long>();
ids.add(folderId);
HashSet<AppWidgetAttribute> widgets = DataUtils.getFolderNoteWidget(mContentResolver,
folderId);
if (!isSyncMode()) {
// if not synced, delete folder directly
DataUtils.batchDeleteNotes(mContentResolver, ids);
} else {
// in sync mode, we'll move the deleted folder into the trash folder
DataUtils.batchMoveToFolder(mContentResolver, ids, Notes.ID_TRASH_FOLER);
}
if (widgets != null) {
for (AppWidgetAttribute widget : widgets) {
if (widget.widgetId != AppWidgetManager.INVALID_APPWIDGET_ID
&& widget.widgetType != Notes.TYPE_WIDGET_INVALIDE) {
updateWidget(widget.widgetId, widget.widgetType);
}
}
}
}
private void openNode(NoteItemData data) {
Intent intent = new Intent(this, NoteEditActivity.class);
intent.setAction(Intent.ACTION_VIEW);
intent.putExtra(Intent.EXTRA_UID, data.getId());
this.startActivityForResult(intent, REQUEST_CODE_OPEN_NODE);
}
private void openFolder(NoteItemData data) {
mCurrentFolderId = data.getId();
startAsyncNotesListQuery();
if (data.getId() == Notes.ID_CALL_RECORD_FOLDER) {
mState = ListEditState.CALL_RECORD_FOLDER;
mAddNewNote.setVisibility(View.GONE);
} else {
mState = ListEditState.SUB_FOLDER;
}
if (data.getId() == Notes.ID_CALL_RECORD_FOLDER) {
mTitleBar.setText(R.string.call_record_folder_name);
} else {
mTitleBar.setText(data.getSnippet());
}
mTitleBar.setVisibility(View.VISIBLE);
}
public void onClick(View v) {
switch (v.getId()) {
case R.id.btn_new_note:
createNewNote();
break;
default:
break;
}
}
private void showSoftInput() {
InputMethodManager inputMethodManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
if (inputMethodManager != null) {
inputMethodManager.toggleSoftInput(InputMethodManager.SHOW_FORCED, 0);
}
}
private void hideSoftInput(View view) {
InputMethodManager inputMethodManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
inputMethodManager.hideSoftInputFromWindow(view.getWindowToken(), 0);
}
private void showCreateOrModifyFolderDialog(final boolean create) {
final AlertDialog.Builder builder = new AlertDialog.Builder(this);
View view = LayoutInflater.from(this).inflate(R.layout.dialog_edit_text, null);
final EditText etName = (EditText) view.findViewById(R.id.et_foler_name);
showSoftInput();
if (!create) {
if (mFocusNoteDataItem != null) {
etName.setText(mFocusNoteDataItem.getSnippet());
builder.setTitle(getString(R.string.menu_folder_change_name));
} else {
Log.e(TAG, "The long click data item is null");
return;
}
} else {
etName.setText("");
builder.setTitle(this.getString(R.string.menu_create_folder));
}
builder.setPositiveButton(android.R.string.ok, null);
builder.setNegativeButton(android.R.string.cancel, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
hideSoftInput(etName);
}
});
final Dialog dialog = builder.setView(view).show();
final Button positive = (Button)dialog.findViewById(android.R.id.button1);
positive.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
hideSoftInput(etName);
String name = etName.getText().toString();
if (DataUtils.checkVisibleFolderName(mContentResolver, name)) {
Toast.makeText(NotesListActivity.this, getString(R.string.folder_exist, name),
Toast.LENGTH_LONG).show();
etName.setSelection(0, etName.length());
return;
}
if (!create) {
if (!TextUtils.isEmpty(name)) {
ContentValues values = new ContentValues();
values.put(NoteColumns.SNIPPET, name);
values.put(NoteColumns.TYPE, Notes.TYPE_FOLDER);
values.put(NoteColumns.LOCAL_MODIFIED, 1);
mContentResolver.update(Notes.CONTENT_NOTE_URI, values, NoteColumns.ID
+ "=?", new String[] {
String.valueOf(mFocusNoteDataItem.getId())
});
}
} else if (!TextUtils.isEmpty(name)) {
ContentValues values = new ContentValues();
values.put(NoteColumns.SNIPPET, name);
values.put(NoteColumns.TYPE, Notes.TYPE_FOLDER);
mContentResolver.insert(Notes.CONTENT_NOTE_URI, values);
}
dialog.dismiss();
}
});
if (TextUtils.isEmpty(etName.getText())) {
positive.setEnabled(false);
}
/**
* When the name edit text is null, disable the positive button
*/
etName.addTextChangedListener(new TextWatcher() {
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
// TODO Auto-generated method stub
}
public void onTextChanged(CharSequence s, int start, int before, int count) {
if (TextUtils.isEmpty(etName.getText())) {
positive.setEnabled(false);
} else {
positive.setEnabled(true);
}
}
public void afterTextChanged(Editable s) {
// TODO Auto-generated method stub
}
});
}
/* (non-Javadoc)
* @see android.app.Activity#onBackPressed()
* 按返回键时根据情况更改类中的数据
*/
@Override
public void onBackPressed() { switch (mState) {
case SUB_FOLDER:
mCurrentFolderId = Notes.ID_ROOT_FOLDER;
mState = ListEditState.NOTE_LIST;
startAsyncNotesListQuery();
mTitleBar.setVisibility(View.GONE);
break;
case CALL_RECORD_FOLDER:
mCurrentFolderId = Notes.ID_ROOT_FOLDER;
mState = ListEditState.NOTE_LIST;
mAddNewNote.setVisibility(View.VISIBLE);
mTitleBar.setVisibility(View.GONE);
startAsyncNotesListQuery();
break;
case NOTE_LIST:
super.onBackPressed();
break;
default:
break;
}
}
/**
* @param appWidgetId
* @param appWidgetType
* 根据不同类型的widget更新插件，通过intent传送数据
*/
private void updateWidget(int appWidgetId, int appWidgetType) {
Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_UPDATE);
if (appWidgetType == Notes.TYPE_WIDGET_2X) {
intent.setClass(this, NoteWidgetProvider_2x.class);
} else if (appWidgetType == Notes.TYPE_WIDGET_4X) {
intent.setClass(this, NoteWidgetProvider_4x.class);
} else {
Log.e(TAG, "Unspported widget type");
return;
}
intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, new int[] {
appWidgetId
});
sendBroadcast(intent);
setResult(RESULT_OK, intent);
}
/**
* 声明监听器，建立菜单，包括名称，视图，删除操作，更改名称操作；
*/
private final OnCreateContextMenuListener mFolderOnCreateContextMenuListener = new OnCreateContextMenuListener() {
public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
if (mFocusNoteDataItem != null) {
menu.setHeaderTitle(mFocusNoteDataItem.getSnippet());
menu.add(0, MENU_FOLDER_VIEW, 0, R.string.menu_folder_view);
menu.add(0, MENU_FOLDER_DELETE, 0, R.string.menu_folder_delete);
menu.add(0, MENU_FOLDER_CHANGE_NAME, 0, R.string.menu_folder_change_name);
}
}
};
@Override
public void onContextMenuClosed(Menu menu) {
if (mNotesListView != null) {
mNotesListView.setOnCreateContextMenuListener(null);
}
super.onContextMenuClosed(menu);
}
/* (non-Javadoc)
* @see android.app.Activity#onContextItemSelected(android.view.MenuItem)
* 针对menu中不同的选择进行不同的处理，里面详细注释
*/
@Override
public boolean onContextItemSelected(MenuItem item) {
if (mFocusNoteDataItem == null) {
Log.e(TAG, "The long click data item is null");
return false;
}
switch (item.getItemId()) {
case MENU_FOLDER_VIEW:
openFolder(mFocusNoteDataItem);//打开对应文件
break;
case MENU_FOLDER_DELETE:
AlertDialog.Builder builder = new AlertDialog.Builder(this);//设置确认是否删除的对话框
builder.setTitle(getString(R.string.alert_title_delete));
builder.setIcon(android.R.drawable.ic_dialog_alert);
builder.setMessage(getString(R.string.alert_message_delete_folder));
builder.setPositiveButton(android.R.string.ok,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
deleteFolder(mFocusNoteDataItem.getId());
}
});
builder.setNegativeButton(android.R.string.cancel, null);
builder.show();//显示对话框
break;
case MENU_FOLDER_CHANGE_NAME:
showCreateOrModifyFolderDialog(false);
break;
default:
break;
}
return true;
}
@Override
public boolean onPrepareOptionsMenu(Menu menu) {
menu.clear();
if (mState == ListEditState.NOTE_LIST) {
getMenuInflater().inflate(R.menu.note_list, menu);
// set sync or sync_cancel
menu.findItem(R.id.menu_sync).setTitle(
GTaskSyncService.isSyncing() ? R.string.menu_sync_cancel : R.string.menu_sync);
} else if (mState == ListEditState.SUB_FOLDER) {
getMenuInflater().inflate(R.menu.sub_folder, menu);
} else if (mState == ListEditState.CALL_RECORD_FOLDER) {
getMenuInflater().inflate(R.menu.call_record_folder, menu);
} else {
Log.e(TAG, "Wrong state:" + mState);
}
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.menu_new_folder: {
showCreateOrModifyFolderDialog(true);
break;
}
case R.id.menu_export_text: {
exportNoteToText();
break;
}
case R.id.menu_sync: {
if (isSyncMode()) {
if (TextUtils.equals(item.getTitle(), getString(R.string.menu_sync))) {
GTaskSyncService.startSync(this);
} else {
GTaskSyncService.cancelSync(this);
}
} else {
startPreferenceActivity();
}
break;
}
case R.id.menu_setting: {
startPreferenceActivity();
break;
}
case R.id.menu_new_note: {
createNewNote();
break;
}
case R.id.menu_search:
onSearchRequested();
break;
default:
break;
}
return true;
}
/* (non-Javadoc)
* @see android.app.Activity#onSearchRequested()
* 直接调用startSearch函数
*/
@Override
public boolean onSearchRequested() {
startSearch(null, false, null /* appData */, false);
return true;
}
/**
* 函数功能：实现将便签导出到文本功能
*/
private void exportNoteToText() {
final BackupUtils backup = BackupUtils.getInstance(NotesListActivity.this);
new AsyncTask<Void, Void, Integer>() {
@Override
protected Integer doInBackground(Void... unused) {
return backup.exportToText();
}
@Override
protected void onPostExecute(Integer result) {
if (result == BackupUtils.STATE_SD_CARD_UNMOUONTED) {
AlertDialog.Builder builder = new AlertDialog.Builder(NotesListActivity.this);
builder.setTitle(NotesListActivity.this
.getString(R.string.failed_sdcard_export));
builder.setMessage(NotesListActivity.this
.getString(R.string.error_sdcard_unmounted));
builder.setPositiveButton(android.R.string.ok, null);
builder.show();
} else if (result == BackupUtils.STATE_SUCCESS) {
AlertDialog.Builder builder = new AlertDialog.Builder(NotesListActivity.this);
builder.setTitle(NotesListActivity.this
.getString(R.string.success_sdcard_export));
builder.setMessage(NotesListActivity.this.getString(
R.string.format_exported_file_location, backup
.getExportedTextFileName(), backup.getExportedTextFileDir()));
builder.setPositiveButton(android.R.string.ok, null);
builder.show();
} else if (result == BackupUtils.STATE_SYSTEM_ERROR) {
AlertDialog.Builder builder = new AlertDialog.Builder(NotesListActivity.this);
builder.setTitle(NotesListActivity.this
.getString(R.string.failed_sdcard_export));
builder.setMessage(NotesListActivity.this
.getString(R.string.error_sdcard_export));
builder.setPositiveButton(android.R.string.ok, null);
builder.show();
}
}
}.execute();
}
/**
* @return
* 功能：判断是否正在同步
*/
private boolean isSyncMode() {
return NotesPreferenceActivity.getSyncAccountName(this).trim().length() > 0;
}
/**
* 功能：跳转到PreferenceActivity界面
*/
private void startPreferenceActivity() {
Activity from = getParent() != null ? getParent() : this;
Intent intent = new Intent(from, NotesPreferenceActivity.class);
from.startActivityIfNeeded(intent, -1);
}
/**
* @author k
* 函数功能：实现对便签列表项的点击事件（短按）
*/
private class OnListItemClickListener implements OnItemClickListener {
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
if (view instanceof NotesListItem) {
NoteItemData item = ((NotesListItem) view).getItemData();
if (mNotesListAdapter.isInChoiceMode()) {
if (item.getType() == Notes.TYPE_NOTE) {
position = position - mNotesListView.getHeaderViewsCount();
mModeCallBack.onItemCheckedStateChanged(null, position, id,
!mNotesListAdapter.isSelectedItem(position));
}
return;
}
switch (mState) {
case NOTE_LIST:
if (item.getType() == Notes.TYPE_FOLDER
|| item.getType() == Notes.TYPE_SYSTEM) {
openFolder(item);
} else if (item.getType() == Notes.TYPE_NOTE) {
openNode(item);
} else {
Log.e(TAG, "Wrong note type in NOTE_LIST");
}
break;
case SUB_FOLDER:
case CALL_RECORD_FOLDER:
if (item.getType() == Notes.TYPE_NOTE) {
openNode(item);
} else {
Log.e(TAG, "Wrong note type in SUB_FOLDER");
}
break;
default:
break;
}
}
}
}
/**
* 查询目标文件
*/
private void startQueryDestinationFolders() {
String selection = NoteColumns.TYPE + "=? AND " + NoteColumns.PARENT_ID + "<>? AND " + NoteColumns.ID + "<>?";
selection = (mState == ListEditState.NOTE_LIST) ? selection:
"(" + selection + ") OR (" + NoteColumns.ID + "=" + Notes.ID_ROOT_FOLDER + ")";
mBackgroundQueryHandler.startQuery(FOLDER_LIST_QUERY_TOKEN,
null,
Notes.CONTENT_NOTE_URI,
FoldersListAdapter.PROJECTION,
selection,
new String[] {
String.valueOf(Notes.TYPE_FOLDER),
String.valueOf(Notes.ID_TRASH_FOLER),
String.valueOf(mCurrentFolderId)
},
NoteColumns.MODIFIED_DATE + " DESC");
}
/* (non-Javadoc)
* @see android.widget.AdapterView.OnItemLongClickListener#onItemLongClick(android.widget.AdapterView, android.view.View, int, long)
* 长按某一项时进行的操作
* 如果长按的是便签，则通过ActionMode菜单实现；如果长按的是文件夹，则通过ContextMenu菜单实现；
* 具体ActionMOde菜单和ContextMenu菜单的详细见精度笔记
*/
public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) {
if (view instanceof NotesListItem) {
mFocusNoteDataItem = ((NotesListItem) view).getItemData();
if (mFocusNoteDataItem.getType() == Notes.TYPE_NOTE && !mNotesListAdapter.isInChoiceMode()) {
if (mNotesListView.startActionMode(mModeCallBack) != null) {
mModeCallBack.onItemCheckedStateChanged(null, position, id, true);
mNotesListView.performHapticFeedback(HapticFeedbackConstants.LONG_PRESS);
} else {
Log.e(TAG, "startActionMode fails");
}
} else if (mFocusNoteDataItem.getType() == Notes.TYPE_FOLDER) {
mNotesListView.setOnCreateContextMenuListener(mFolderOnCreateContextMenuListener);
}
}
return false;
}
}
12、NotesListAdapter.java
package net.micode.notes.ui;
import android.content.Context;
import android.database.Cursor;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup;
import android.widget.CursorAdapter;
import net.micode.notes.data.Notes;
import java.util.Collection;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
/*
* 功能：直译为便签表连接器，继承了CursorAdapter，它为cursor和ListView提供了连接的桥梁。
* 所以NotesListAdapter实现的是鼠标和编辑便签链接的桥梁
*/
public class NotesListAdapter extends CursorAdapter {
private static final String TAG = "NotesListAdapter";
private Context mContext;
private HashMap<Integer, Boolean> mSelectedIndex;
private int mNotesCount; //便签数
private boolean mChoiceMode; //选择模式标记
/*
* 桌面widget的属性，包括编号和类型
*/
public static class AppWidgetAttribute {
public int widgetId;
public int widgetType;
};
/*
* 函数功能：初始化便签链接器
* 函数实现：根据传进来的内容设置相关变量
*/
public NotesListAdapter(Context context) {
super(context, null); //父类对象置空
mSelectedIndex = new HashMap<Integer, Boolean>(); //新建选项下标的hash表
mContext = context;
mNotesCount = 0;
}
@Override
/*
* 函数功能：新建一个视图来存储光标所指向的数据
* 函数实现：使用兄弟类NotesListItem新建一个项目选项
*/
public View newView(Context context, Cursor cursor, ViewGroup parent) {
return new NotesListItem(context);
}
/*
* 函数功能：将已经存在的视图和鼠标指向的数据进行捆绑
* 函数实现：如下注释
*/
@Override
public void bindView(View view, Context context, Cursor cursor) {
if (view instanceof NotesListItem) {
//若view是NotesListItem的一个实例
NoteItemData itemData = new NoteItemData(context, cursor);
((NotesListItem) view).bind(context, itemData, mChoiceMode,
isSelectedItem(cursor.getPosition()));
//则新建一个项目选项并且用bind跟将view和鼠标，内容，便签数据捆绑在一起
}
}
/*
* 函数功能：设置勾选框
* 函数实现：如下注释
*/
public void setCheckedItem(final int position, final boolean checked) {
mSelectedIndex.put(position, checked);
//根据定位和是否勾选设置下标
notifyDataSetChanged();
//在修改后刷新activity
}
/*
* 函数功能：判断单选按钮是否勾选
*/
public boolean isInChoiceMode() {
return mChoiceMode;
}
/*
* 函数功能：设置单项选项框
* 函数实现：重置下标并且根据参数mode设置选项
*/
public void setChoiceMode(boolean mode) {
mSelectedIndex.clear();
mChoiceMode = mode;
}
/*
* 函数功能：选择全部选项
* 函数实现：如下注释
*/
public void selectAll(boolean checked) {
Cursor cursor = getCursor();
//获取光标位置
for (int i = 0; i < getCount(); i++) {
if (cursor.moveToPosition(i)) {
if (NoteItemData.getNoteType(cursor) == Notes.TYPE_NOTE) {
setCheckedItem(i, checked);
}
}
}
//遍历所有光标可用的位置在判断为便签类型之后勾选单项框
}
/*
* 函数功能：建立选择项的下标列表
* 函数实现：如下注释
*/
public HashSet<Long> getSelectedItemIds() {
HashSet<Long> itemSet = new HashSet<Long>();
//建立hash表
for (Integer position : mSelectedIndex.keySet()) {
//遍历所有的关键
if (mSelectedIndex.get(position) == true) {
//若光标位置可用
Long id = getItemId(position);
if (id == Notes.ID_ROOT_FOLDER) {
//原文件不需要添加
Log.d(TAG, "Wrong item id, should not happen");
} else {
itemSet.add(id);
}
//则将id该下标假如选项集合中
}
}
return itemSet;
}
/*
* 函数功能：建立桌面Widget的选项表
* 函数实现：如下注释
*/
public HashSet<AppWidgetAttribute> getSelectedWidget() {
HashSet<AppWidgetAttribute> itemSet = new HashSet<AppWidgetAttribute>();
for (Integer position : mSelectedIndex.keySet()) {
if (mSelectedIndex.get(position) == true) {
Cursor c = (Cursor) getItem(position);
//以上4句和getSelectedItemIds一样，不再重复
if (c != null) {
//光标位置可用的话就建立新的Widget属性并编辑下标和类型，最后添加到选项集中
AppWidgetAttribute widget = new AppWidgetAttribute();
NoteItemData item = new NoteItemData(mContext, c);
widget.widgetId = item.getWidgetId();
widget.widgetType = item.getWidgetType();
itemSet.add(widget);
/**
* Don't close cursor here, only the adapter could close it
*/
} else {
Log.e(TAG, "Invalid cursor");
return null;
}
}
}
return itemSet;
}
/*
* 函数功能：获取选项个数
* 函数实现：如下注释
*/
public int getSelectedCount() {
Collection<Boolean> values = mSelectedIndex.values();
//首先获取选项下标的值
if (null == values) {
return 0;
}
Iterator<Boolean> iter = values.iterator();
//初始化叠加器
int count = 0;
while (iter.hasNext()) {
if (true == iter.next()) {
//若value值为真计数+1
count++;
}
}
return count;
}
/*
* 函数功能：判断是否全部选中
* 函数实现：如下注释
*/
public boolean isAllSelected() {
int checkedCount = getSelectedCount();
return (checkedCount != 0 && checkedCount == mNotesCount);
//获取选项数看是否等于便签的个数
}
/*
* 函数功能：判断是否为选项表
* 函数实现：通过传递的下标来确定
*/
public boolean isSelectedItem(final int position) {
if (null == mSelectedIndex.get(position)) {
return false;
}
return mSelectedIndex.get(position);
}
@Override
/*
* 函数功能：在activity内容发生局部变动的时候回调该函数计算便签的数量
* 函数实现：如下注释
*/
protected void onContentChanged() {
super.onContentChanged();
//执行基类函数
calcNotesCount();
}
@Override
/*
* 函数功能：在activity光标发生局部变动的时候回调该函数计算便签的数量
*/
public void changeCursor(Cursor cursor) {
super.changeCursor(cursor);
//执行基类函数
calcNotesCount();
}
/*
* 函数功能：计算便签数量
*
*/
private void calcNotesCount() {
mNotesCount = 0;
for (int i = 0; i < getCount(); i++) {
//获取总数同时遍历
Cursor c = (Cursor) getItem(i);
if (c != null) {
if (NoteItemData.getNoteType(c) == Notes.TYPE_NOTE) {
mNotesCount++;
//若该位置不为空并且文本类型为便签就+1
}
} else {
Log.e(TAG, "Invalid cursor");
return;
}
//否则报错
}
}
}
13、NotesListItem.java
package net.micode.notes.ui;
import android.content.Context;
import android.text.format.DateUtils;
import android.view.View;
import android.widget.CheckBox;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import net.micode.notes.R;
import net.micode.notes.data.Notes;
import net.micode.notes.tool.DataUtils;
import net.micode.notes.tool.ResourceParser.NoteItemBgResources;
//创建便签列表项目选项
public class NotesListItem extends LinearLayout {
private ImageView mAlert;//闹钟图片
private TextView mTitle; //标题
private TextView mTime; //时间
private TextView mCallName; //
private NoteItemData mItemData; //标签数据
private CheckBox mCheckBox; //打钩框
/*初始化基本信息*/
public NotesListItem(Context context) {
super(context); //super()它的主要作用是调整调用父类构造函数的顺序
inflate(context, R.layout.note_item, this);//Inflate可用于将一个xml中定义的布局控件找出来,这里的xml是r。layout
//findViewById用于从contentView中查找指定ID的View，转换出来的形式根据需要而定;
mAlert = (ImageView) findViewById(R.id.iv_alert_icon);
mTitle = (TextView) findViewById(R.id.tv_title);
mTime = (TextView) findViewById(R.id.tv_time);
mCallName = (TextView) findViewById(R.id.tv_name);
mCheckBox = (CheckBox) findViewById(android.R.id.checkbox);
}
///根据data的属性对各个控件的属性的控制，主要是可见性Visibility，内容setText，格式setTextAppearance
public void bind(Context context, NoteItemData data, boolean choiceMode, boolean checked) {
if (choiceMode && data.getType() == Notes.TYPE_NOTE) {
mCheckBox.setVisibility(View.VISIBLE); ///设置可见行为可见
mCheckBox.setChecked(checked); ///格子打钩
} else {
mCheckBox.setVisibility(View.GONE);
}
mItemData = data;
///设置控件属性，一共三种情况，由data的id和父id是否与保存到文件夹的id一致来决定
if (data.getId() == Notes.ID_CALL_RECORD_FOLDER) {
mCallName.setVisibility(View.GONE);
mAlert.setVisibility(View.VISIBLE);
//设置该textview的style
mTitle.setTextAppearance(context, R.style.TextAppearancePrimaryItem);
//settext为设置内容
mTitle.setText(context.getString(R.string.call_record_folder_name)
+ context.getString(R.string.format_folder_files_count, data.getNotesCount()));
mAlert.setImageResource(R.drawable.call_record);
} else if (data.getParentId() == Notes.ID_CALL_RECORD_FOLDER) {
mCallName.setVisibility(View.VISIBLE);
mCallName.setText(data.getCallName());
mTitle.setTextAppearance(context,R.style.TextAppearanceSecondaryItem);
mTitle.setText(DataUtils.getFormattedSnippet(data.getSnippet()));
///关于闹钟的设置
if (data.hasAlert()) {
mAlert.setImageResource(R.drawable.clock);//图片来源的设置
mAlert.setVisibility(View.VISIBLE);
} else {
mAlert.setVisibility(View.GONE);
}
} else {
mCallName.setVisibility(View.GONE);
mTitle.setTextAppearance(context, R.style.TextAppearancePrimaryItem);
///设置title格式
if (data.getType() == Notes.TYPE_FOLDER) {
mTitle.setText(data.getSnippet()
+ context.getString(R.string.format_folder_files_count,
data.getNotesCount()));
mAlert.setVisibility(View.GONE);
} else {
mTitle.setText(DataUtils.getFormattedSnippet(data.getSnippet()));
if (data.hasAlert()) {
mAlert.setImageResource(R.drawable.clock);///设置图片来源
mAlert.setVisibility(View.VISIBLE);
} else {
mAlert.setVisibility(View.GONE);
}
}
}
///设置内容，获取相关时间，从data里编辑的日期中获取
mTime. setText(DateUtils.getRelativeTimeSpanString(data.getModifiedDate()));
setBackground(data);
}
//根据data的文件属性来设置背景
private void setBackground(NoteItemData data) {
int id = data.getBgColorId();
//，若是note型文件，则4种情况，对于4种不同情况的背景来源
if (data.getType() == Notes.TYPE_NOTE) {
//单个数据并且只有一个子文件夹
if (data.isSingle() || data.isOneFollowingFolder()) {
setBackgroundResource(NoteItemBgResources.getNoteBgSingleRes(id));
} else if (data.isLast()) {//是最后一个数据
setBackgroundResource(NoteItemBgResources.getNoteBgLastRes(id));
} else if (data.isFirst() || data.isMultiFollowingFolder()) {//是一个数据并有多个子文件夹
setBackgroundResource(NoteItemBgResources.getNoteBgFirstRes(id));
} else {
setBackgroundResource(NoteItemBgResources.getNoteBgNormalRes(id));
}
} else {
//若不是note直接调用文件夹的背景来源
setBackgroundResource(NoteItemBgResources.getFolderBgRes());
}
}
public NoteItemData getItemData() {
return mItemData;
}
}
14、NotesPreferenceActivity.java
package net.micode.notes.ui;
import android.accounts.Account;
import android.accounts.AccountManager;
import android.app.ActionBar;
import android.app.AlertDialog;
import android.content.BroadcastReceiver;
import android.content.ContentValues;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.preference.Preference;
import android.preference.Preference.OnPreferenceClickListener;
import android.preference.PreferenceActivity;
import android.preference.PreferenceCategory;
import android.text.TextUtils;
import android.text.format.DateFormat;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
import net.micode.notes.R;
import net.micode.notes.data.Notes;
import net.micode.notes.data.Notes.NoteColumns;
import net.micode.notes.gtask.remote.GTaskSyncService;
/*
*该类功能：NotesPreferenceActivity，在小米便签中主要实现的是对背景颜色和字体大小的数据储存。
* 继承了PreferenceActivity主要功能为对系统信息和配置进行自动保存的Activity
*/
public class NotesPreferenceActivity extends PreferenceActivity {
public static final String PREFERENCE_NAME = "notes_preferences";
//优先名
public static final String PREFERENCE_SYNC_ACCOUNT_NAME = "pref_key_account_name";
//同步账号
public static final String PREFERENCE_LAST_SYNC_TIME = "pref_last_sync_time";
//同步时间
public static final String PREFERENCE_SET_BG_COLOR_KEY = "pref_key_bg_random_appear";
private static final String PREFERENCE_SYNC_ACCOUNT_KEY = "pref_sync_account_key";
//同步密码
private static final String AUTHORITIES_FILTER_KEY = "authorities";
//本地密码
private PreferenceCategory mAccountCategory;
//账户分组
private GTaskReceiver mReceiver;
//同步任务接收器
private Account[] mOriAccounts;
//账户
private boolean mHasAddedAccount;
//账户的hash标记
@Override
/*
*函数功能：创建一个activity，在函数里要完成所有的正常静态设置
*参数：Bundle icicle：存放了 activity 当前的状态
*函数实现：如下注释
*/
protected void onCreate(Bundle icicle) {
//先执行父类的创建函数
super.onCreate(icicle);
/* using the app icon for navigation */
getActionBar().setDisplayHomeAsUpEnabled(true);
//给左上角图标的左边加上一个返回的图标
addPreferencesFromResource(R.xml.preferences);
//添加xml来源并显示 xml
mAccountCategory = (PreferenceCategory) findPreference(PREFERENCE_SYNC_ACCOUNT_KEY);
//根据同步账户关键码来初始化分组
mReceiver = new GTaskReceiver();
IntentFilter filter = new IntentFilter();
filter.addAction(GTaskSyncService.GTASK_SERVICE_BROADCAST_NAME);
registerReceiver(mReceiver, filter);
//初始化同步组件
mOriAccounts = null;
View header = LayoutInflater.from(this).inflate(R.layout.settings_header, null);
//获取listvivew，ListView的作用:用于列出所有选择
getListView().addHeaderView(header, null, true);
//在listview组件上方添加其他组件
}
@Override
/*
* 函数功能：activity交互功能的实现，用于接受用户的输入
* 函数实现：如下注释
*/
protected void onResume() {
//先执行父类 的交互实现
super.onResume();
// need to set sync account automatically if user has added a new
// account
if (mHasAddedAccount) {
//若用户新加了账户则自动设置同步账户
Account[] accounts = getGoogleAccounts();
//获取google同步账户
if (mOriAccounts != null && accounts.length > mOriAccounts.length) {
//若原账户不为空且当前账户有增加
for (Account accountNew : accounts) {
boolean found = false;
for (Account accountOld : mOriAccounts) {
if (TextUtils.equals(accountOld.name, accountNew.name)) {
//更新账户
found = true;
break;
}
}
if (!found) {
setSyncAccount(accountNew.name);
//若是没有找到旧的账户，那么同步账号中就只添加新账户
break;
}
}
}
}
refreshUI();
//刷新标签界面
}
@Override
/*
* 函数功能：销毁一个activity
* 函数实现：如下注释
*/
protected void onDestroy() {
if (mReceiver != null) {
unregisterReceiver(mReceiver);
//注销接收器
}
super.onDestroy();
//执行父类的销毁动作
}
/*
* 函数功能：重新设置账户信息
* 函数实现：如下注释
*/
private void loadAccountPreference() {
mAccountCategory.removeAll();
//销毁所有的分组
Preference accountPref = new Preference(this);
//建立首选项
final String defaultAccount = getSyncAccountName(this);
accountPref.setTitle(getString(R.string.preferences_account_title));
accountPref.setSummary(getString(R.string.preferences_account_summary));
//设置首选项的大标题和小标题
accountPref.setOnPreferenceClickListener(new OnPreferenceClickListener() {
public boolean onPreferenceClick(Preference preference) {
//建立监听器
if (!GTaskSyncService.isSyncing()) {
if (TextUtils.isEmpty(defaultAccount)) {
// the first time to set account
//若是第一次建立账户显示选择账户提示对话框
showSelectAccountAlertDialog();
} else {
// if the account has already been set, we need to promp
// user about the risk
//若是已经建立则显示修改对话框并进行修改操作
showChangeAccountConfirmAlertDialog();
}
} else {
//若在没有同步的情况下，则在toast中显示不能修改
Toast.makeText(NotesPreferenceActivity.this,
R.string.preferences_toast_cannot_change_account, Toast.LENGTH_SHORT)
.show();
}
return true;
}
});
//根据新建首选项编辑新的账户分组
mAccountCategory.addPreference(accountPref);
}
/*
*函数功能：设置按键的状态和最后同步的时间
*函数实现：如下注释
*/
private void loadSyncButton() {
Button syncButton = (Button) findViewById(R.id.preference_sync_button);
TextView lastSyncTimeView = (TextView) findViewById(R.id.prefenerece_sync_status_textview);
//获取同步按钮控件和最终同步时间的的窗口
// set button state
//设置按钮的状态
if (GTaskSyncService.isSyncing()) {
//若是在同步状态下
syncButton.setText(getString(R.string.preferences_button_sync_cancel));
syncButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
GTaskSyncService.cancelSync(NotesPreferenceActivity.this);
}
});
//设置按钮显示的文本为“取消同步”以及监听器
} else {
syncButton.setText(getString(R.string.preferences_button_sync_immediately));
syncButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
GTaskSyncService.startSync(NotesPreferenceActivity.this);
}
});
//若是不同步则设置按钮显示的文本为“立即同步”以及对应监听器
}
syncButton.setEnabled(!TextUtils.isEmpty(getSyncAccountName(this)));
//设置按键可用还是不可用
// set last sync time
// 设置最终同步时间
if (GTaskSyncService.isSyncing()) {
//若是在同步的情况下
lastSyncTimeView.setText(GTaskSyncService.getProgressString());
lastSyncTimeView.setVisibility(View.VISIBLE);
// 根据当前同步服务器设置时间显示框的文本以及可见性
} else {
//若是非同步情况
long lastSyncTime = getLastSyncTime(this);
if (lastSyncTime != 0) {
lastSyncTimeView.setText(getString(R.string.preferences_last_sync_time,
DateFormat.format(getString(R.string.preferences_last_sync_time_format),
lastSyncTime)));
lastSyncTimeView.setVisibility(View.VISIBLE);
//则根据最后同步时间的信息来编辑时间显示框的文本内容和可见性
} else {
//若时间为空直接设置为不可见状态
lastSyncTimeView.setVisibility(View.GONE);
}
}
}
/*
*函数功能：刷新标签界面
*函数实现：调用上文设置账号和设置按键两个函数来实现
*/
private void refreshUI() {
loadAccountPreference();
loadSyncButton();
}
/*
* 函数功能：显示账户选择的对话框并进行账户的设置
* 函数实现：如下注释
*/
private void showSelectAccountAlertDialog() {
AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(this);
//创建一个新的对话框
View titleView = LayoutInflater.from(this).inflate(R.layout.account_dialog_title, null);
TextView titleTextView = (TextView) titleView.findViewById(R.id.account_dialog_title);
titleTextView.setText(getString(R.string.preferences_dialog_select_account_title));
TextView subtitleTextView = (TextView) titleView.findViewById(R.id.account_dialog_subtitle);
subtitleTextView.setText(getString(R.string.preferences_dialog_select_account_tips));
//设置标题以及子标题的内容
dialogBuilder.setCustomTitle(titleView);
dialogBuilder.setPositiveButton(null, null);
//设置对话框的自定义标题，建立一个YES的按钮
Account[] accounts = getGoogleAccounts();
String defAccount = getSyncAccountName(this);
//获取同步账户信息
mOriAccounts = accounts;
mHasAddedAccount = false;
if (accounts.length > 0) {
//若账户不为空
CharSequence[] items = new CharSequence[accounts.length];
final CharSequence[] itemMapping = items;
int checkedItem = -1;
int index = 0;
for (Account account : accounts) {
if (TextUtils.equals(account.name, defAccount)) {
checkedItem = index;
//在账户列表中查询到所需账户
}
items[index++] = account.name;
}
dialogBuilder.setSingleChoiceItems(items, checkedItem,
//在对话框建立一个单选的复选框
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
setSyncAccount(itemMapping[which].toString());
dialog.dismiss();
//取消对话框
refreshUI();
}
//设置点击后执行的事件，包括检录新同步账户和刷新标签界面
});
//建立对话框网络版的监听器
}
View addAccountView = LayoutInflater.from(this).inflate(R.layout.add_account_text, null);
dialogBuilder.setView(addAccountView);
//给新加账户对话框设置自定义样式
final AlertDialog dialog = dialogBuilder.show();
//显示对话框
addAccountView.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
mHasAddedAccount = true;
//将新加账户的hash置true
Intent intent = new Intent("android.settings.ADD_ACCOUNT_SETTINGS");
//建立网络建立组件
intent.putExtra(AUTHORITIES_FILTER_KEY, new String[] {
"gmail-ls"
});
startActivityForResult(intent, -1);
//跳回上一个选项
dialog.dismiss();
}
});
//建立新加账户对话框的监听器
}
/*
* 函数功能：显示账户选择对话框和相关账户操作
* 函数实现：如下注释
*/
private void showChangeAccountConfirmAlertDialog() {
AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(this);
//创建一个新的对话框
View titleView = LayoutInflater.from(this).inflate(R.layout.account_dialog_title, null);
TextView titleTextView = (TextView) titleView.findViewById(R.id.account_dialog_title);
titleTextView.setText(getString(R.string.preferences_dialog_change_account_title,
getSyncAccountName(this)));
TextView subtitleTextView = (TextView) titleView.findViewById(R.id.account_dialog_subtitle);
subtitleTextView.setText(getString(R.string.preferences_dialog_change_account_warn_msg));
//根据同步修改的账户信息设置标题以及子标题的内容
dialogBuilder.setCustomTitle(titleView);
//设置对话框的自定义标题
CharSequence[] menuItemArray = new CharSequence[] {
getString(R.string.preferences_menu_change_account),
getString(R.string.preferences_menu_remove_account),
getString(R.string.preferences_menu_cancel)
};
//定义一些标记字符串
dialogBuilder.setItems(menuItemArray, new DialogInterface.OnClickListener() {
//设置对话框要显示的一个list，用于显示几个命令时,即change，remove，cancel
public void onClick(DialogInterface dialog, int which) {
//按键功能，由which来决定
if (which == 0) {
//进入账户选择对话框
showSelectAccountAlertDialog();
} else if (which == 1) {
//删除账户并且跟新便签界面
removeSyncAccount();
refreshUI();
}
}
});
dialogBuilder.show();
//显示对话框
}
/*
*函数功能：获取谷歌账户
*函数实现：通过账户管理器直接获取
*/
private Account[] getGoogleAccounts() {
AccountManager accountManager = AccountManager.get(this);
return accountManager.getAccountsByType("com.google");
}
/*
* 函数功能：设置同步账户
* 函数实现：如下注释：
*/
private void setSyncAccount(String account) {
if (!getSyncAccountName(this).equals(account)) {
//假如该账号不在同步账号列表中
SharedPreferences settings = getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE);
SharedPreferences.Editor editor = settings.edit();
//编辑共享的首选项
if (account != null) {
editor.putString(PREFERENCE_SYNC_ACCOUNT_NAME, account);
} else {
editor.putString(PREFERENCE_SYNC_ACCOUNT_NAME, "");
}
//将该账号加入到首选项中
editor.commit();
//提交修改的数据
setLastSyncTime(this, 0);
//将最后同步时间清零
// clean up local gtask related info
new Thread(new Runnable() {
public void run() {
ContentValues values = new ContentValues();
values.put(NoteColumns.GTASK_ID, "");
values.put(NoteColumns.SYNC_ID, 0);
getContentResolver().update(Notes.CONTENT_NOTE_URI, values, null, null);
}
}).start();
//重置当地同步任务的信息
Toast.makeText(NotesPreferenceActivity.this,
getString(R.string.preferences_toast_success_set_accout, account),
Toast.LENGTH_SHORT).show();
//将toast的文本信息置为“设置账户成功”并显示出来
}
}
/*
* 函数功能：删除同步账户
* 函数实现：如下注释：
*/
private void removeSyncAccount() {
SharedPreferences settings = getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE);
SharedPreferences.Editor editor = settings.edit();
//设置共享首选项
if (settings.contains(PREFERENCE_SYNC_ACCOUNT_NAME)) {
editor.remove(PREFERENCE_SYNC_ACCOUNT_NAME);
//假如当前首选项中有账户就删除
}
if (settings.contains(PREFERENCE_LAST_SYNC_TIME)) {
editor.remove(PREFERENCE_LAST_SYNC_TIME);
//删除当前首选项中有账户时间
}
editor.commit();
//提交更新后的数据
// clean up local gtask related info
new Thread(new Runnable() {
public void run() {
ContentValues values = new ContentValues();
values.put(NoteColumns.GTASK_ID, "");
values.put(NoteColumns.SYNC_ID, 0);
getContentResolver().update(Notes.CONTENT_NOTE_URI, values, null, null);
}
}).start();
//重置当地同步任务的信息
}
/*
* 函数功能：获取同步账户名称
* 函数实现：通过共享的首选项里的信息直接获取
*/
public static String getSyncAccountName(Context context) {
SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME,
Context.MODE_PRIVATE);
return settings.getString(PREFERENCE_SYNC_ACCOUNT_NAME, "");
}
/*
* 函数功能：设置最终同步的时间
* 函数实现：如下注释
*/
public static void setLastSyncTime(Context context, long time) {
SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME,
Context.MODE_PRIVATE);
SharedPreferences.Editor editor = settings.edit();
// 从共享首选项中找到相关账户并获取其编辑器
editor.putLong(PREFERENCE_LAST_SYNC_TIME, time);
editor.commit();
//编辑最终同步时间并提交更新
}
/*
* 函数功能：获取最终同步时间
* 函数实现：通过共享的首选项里的信息直接获取
*/
public static long getLastSyncTime(Context context) {
SharedPreferences settings = context.getSharedPreferences(PREFERENCE_NAME,
Context.MODE_PRIVATE);
return settings.getLong(PREFERENCE_LAST_SYNC_TIME, 0);
}
/*
* 函数功能：接受同步信息
* 函数实现：继承BroadcastReceiver
*/
private class GTaskReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
refreshUI();
if (intent.getBooleanExtra(GTaskSyncService.GTASK_SERVICE_BROADCAST_IS_SYNCING, false)) {
//获取随广播而来的Intent中的同步服务的数据
TextView syncStatus = (TextView) findViewById(R.id.prefenerece_sync_status_textview);
syncStatus.setText(intent
.getStringExtra(GTaskSyncService.GTASK_SERVICE_BROADCAST_PROGRESS_MSG));
//通过获取的数据在设置系统的状态
}
}
}
/*
* 函数功能：处理菜单的选项
* 函数实现：如下注释
* 参数:MenuItem菜单选项
*/
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
//根据选项的id选择，这里只有一个主页
case android.R.id.home:
Intent intent = new Intent(this, NotesListActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(intent);
return true;
//在主页情况下在创建连接组件intent，发出清空的信号并开始一个相应的activity
default:
return false;
}
}
}
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