1.首先在pubspec.yaml文件中新增依赖pub.dev
image_picker: ^0.8.7+5
image_cropper: ^4.0.1
2.在Android的AndroidManifest.xml文件里面添加权限
<activity
android:name="com.yalantis.ucrop.UCropActivity"
android:screenOrientation="portrait"
android:theme="@style/Theme.AppCompat.Light.NoActionBar"/>
3.在ios的Info.plist文件里面添加权限 项目根目录文章来源:https://www.toymoban.com/news/detail-681999.html
<key>NSCameraUsageDescription</key>
<string>这是你的自拍照</string>
<key>NSMicrophoneUsageDescription</key>
<string>用于音频插件</string>
<key>NSPhotoLibraryUsageDescription</key>
<string>用于相册选择插件</string>
<key>UIBackgroundModes</key>
<array>
<string>remote-notification</string>
</array>
4.代码实现文章来源地址https://www.toymoban.com/news/detail-681999.html
_checkAvatar() {
if (!kIsWeb) {
loading(() async {
final picker = ImagePicker();
final pickerFile = await picker.pickImage(source: ImageSource.gallery);
if (pickerFile != null) {
CroppedFile? croppedImage = await ImageCropper().cropImage(
sourcePath: pickerFile.path, //图片资源
aspectRatio: const CropAspectRatio(ratioX: 1, ratioY: 1),
//裁剪框比例
uiSettings: [
AndroidUiSettings(
toolbarTitle: '裁剪',
lockAspectRatio: true //锁定图片纵横比
),
IOSUiSettings(
title: '裁剪',
resetButtonHidden: true, //不显示重置按钮
aspectRatioLockEnabled: true, //锁定图片纵横比
aspectRatioPickerButtonHidden: true, //隐藏切换纵横比按钮
doneButtonTitle: "完成", //confirm按钮文字
cancelButtonTitle: "取消" //cancel按钮文字
)
]
);//根据XFile对象的路径获得图片进行裁剪
//裁剪完成
if(croppedImage != null) {
//裁剪后图片的路径
String filepath = croppedImage.path;
final res = await Api.getInstance().uploadAvatar(Provider.memberId, filepath);//pickerFile.path
if (res['code'] == 0) {
setState(() {
ThemeSnackBar.show(context, res['msg']);
_getUserInfo();
_user['profilePhoto'] = res['data']['url'];
});
} else {
ThemeSnackBar.show(context, res['msg']);
}
print("filepath-----$filepath");
}
}
});
} else {
final uploadInputElement = html.FileUploadInputElement();
uploadInputElement.multiple = false;
uploadInputElement.draggable = true;
uploadInputElement.click();
uploadInputElement.onChange.listen((event) {
final file = uploadInputElement.files?.first;
if (file != null) {
loading(() async {
final formData = html.FormData();
formData.appendBlob("avatarfile", file.slice(), file.name);
formData.append("memberId", Provider.memberId);
Api.getInstance().uploadAvatarFromHtml(formData, (e) {
if (e['code'] == 0) {
setState(() {
_user['profilePhoto'] = e['data']['url'];
});
} else {
ThemeSnackBar.show(context, e['msg']);
}
});
});
}
});
}
到了这里,关于flutter 上传图片并裁剪的文章就介绍完了。如果您还想了解更多内容,请在右上角搜索TOY模板网以前的文章或继续浏览下面的相关文章,希望大家以后多多支持TOY模板网!