存在问题
做了一个记录页面(类似单方聊天页),输入框在底部;当弹出键盘时,页面整体上移,页面头信息会消失不见
需要实现效果:
比如一个记录页面,需要在键盘弹出时:文章来源:https://www.toymoban.com/news/detail-536779.html
- 底部的输入框跟随键盘上弹
- 页面头固定在顶部不动
- 聊天信息区域(即内容区)调整高度,该区域局部滚动
文章来源地址https://www.toymoban.com/news/detail-536779.html
解决方法
- 底部输入框fixed定位在底部,使用输入框的@focus获取键盘高度,更改输入框
bottom;@blur
时恢复bottom=0
; - 使用包含页面头和内容区
- container的padding-bottom设置为输入框高度+输入框bottom,避免被输入框和键盘遮挡;并设置为flex column布局
- 头部定高(如果不定高可以不设置);
- 内容区设flex-grow:1,overflow-y:auto; 使其自适应高度并实现滚动;
实现代码
<template>
<view>
<view class="container" :style="{'padding-bottom': `${52+inputBottom}px`}">
<view class="header">我是头部</view>
<scroll-view class="content" :scroll-y="true" :scroll-top="scrollTop">
<view>
<view class="message" v-for="(item,index) in records" :key="index">
<view class="message-content" v-html="item.content"></view>
<view class="message-time">{{item.updateTime}}</view>
</view>
</view>
</scroll-view>
</view>
<view class="bottom-textarea" :style="{bottom: inputBottom+'px'}">
<view class="textarea-container">
<textarea
v-model="recordInput"
:maxlength="-1"
:auto-height="true"
:show-confirm-bar="false"
:cursor-spacing="10"
:fixed="true"
:adjust-position="false"
@focus="focusTextarea"
@blur="blurTextarea"
/>
</view>
<button @click="addRecord" class="primary-btn">记录</button>
</view>
</view>
</template>
<script>
export default {
data() {
return {
records: [],
recordInput: "",
itemAverageHeight: 500, //每条数据平均高度,为确保能滚到底部,可以设置大一些
scrollTop: 1000,
inputBottom: 0,
};
},
methods: {
getList() {
uni.showNavigationBarLoading();
// 获取记录信息
this.$api
.getRecords()
.then((res) => {
this.records = res.reverse().map((item) => ({
...item,
content: item.content.replace(/\n/g, "<br/>"),
}));
if (this.records.length > 0)
this.scrollTop = this.itemAverageHeight * this.records.length;
})
.finally(() => {
uni.hideNavigationBarLoading();
});
},
addRecord() {
const trueValue = this.recordInput.trim();
this.$api.addRecord(trueValue).then(() => {
this.records.push({
content: trueValue.replace(/\n/g, "<br/>"),
updateTime: new Date(),
});
this.recordInput = "";
this.scrollTop = this.scrollTop + this.itemAverageHeight; //滚到底部
});
},
focusTextarea(e) {
this.inputBottom = e.detail.height;
this.scrollTop += 1; //滚到底部
},
blurTextarea(e) {
this.inputBottom = 0;
this.scrollTop += 1; //滚到底部
},
},
onLoad(options) {
this.getList();
},
};
</script>
<style lang="less">
@left-right-margin: 40rpx;
.container {
width: 100vw;
height: 100vh;
box-sizing: border-box;
padding-bottom: 52px;
display: flex;
flex-direction: column;
.header {
flex-shrink: 0;
padding: 0px @left-right-margin 32rpx @left-right-margin;
}
.content {
flex-grow: 1;
overflow: auto;
.message {
margin: 0px @left-right-margin 32rpx;
display: flex;
flex-direction: column;
align-items: flex-end;
.message-content {
width: auto;
max-width: calc(100vw - 80rpx);
word-wrap: break-word;
box-sizing: border-box;
padding: 32rpx;
line-height: 48rpx;
background: pink;
border-radius: 16rpx 0px 16rpx 16rpx;
}
.message-time {
line-height: 32rpx;
margin-top: 16rpx;
}
}
}
}
.bottom-textarea {
position: fixed;
bottom: 0px;
left: 0px;
right: 0px;
background-color: #f2f2f2;
border-top: 2rpx solid rgba(226, 226, 226, 1);
padding: 6px 20px;
display: flex;
align-items: flex-end;
.textarea-container {
flex: 1;
min-height: 80rpx;
background: rgba(255, 255, 255, 1);
border-radius: 8rpx;
box-sizing: border-box;
padding: 20rpx 16rpx;
> textarea {
max-height: 250rpx;
font-size: 36rpx;
color: rgba(8, 8, 8, 1);
width: auto;
}
}
> button {
flex-shrink: 0;
height: 80rpx;
margin: 0;
margin-left: 16rpx;
}
}
</style>
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