Vue:uni-app学习(五)--媒体组件(图片、视频)
一、图片展示
<template>
<view>
<page-head :title="title"></page-head>
<view class="uni-padding-wrap uni-common-mt">
<view class="uni-title">
示例1 <text>\n本地图片</text>
</view>
<view class="uni-center" style="background:#FFFFFF; font-size:0;">
<!-- #ifdef MP-ALIPAY -->
<image class="image" mode="widthFix" src="../../../static/logo.png" />
<!-- #endif -->
<!-- #ifndef MP-ALIPAY -->
<image class="image" mode="widthFix" src="../../../static/logo.png" />
<!-- #endif -->
</view>
<view class="uni-title uni-common-mt">
示例2 <text>\n网络图片</text>
</view>
<view class="uni-center" style="background:#FFFFFF; font-size:0;">
<image class="image" mode="widthFix" src="https://img-cdn-qiniu.dcloud.net.cn/uniapp/images/uni@2x.png" />
</view>
</view>
</view>
</template>
<script>
export default {
data() {
return {
title: 'image'
}
}
}
</script>
<style>
.image {
margin:40rpx 0;
width: 200rpx;
}
</style>
图片展示模式:
scaleToFill:不保持纵横比缩放图片,使图片完全适应
aspectFit:保持纵横比缩放图片,使图片的长边能完全显示出来
aspectFill:保持纵横比缩放图片,只保证图片的短边能完全显示出来
top:不缩放图片,只显示图片的顶部区域
bottom:不缩放图片,只显示图片的底部区域
center:不缩放图片,只显示图片的中间区域
left:不缩放图片,只显示图片的左边区域
right:不缩放图片,只显示图片的右边边区域
top left:不缩放图片,只显示图片的左上边区域
top right:不缩放图片,只显示图片的右上边区域
bottom left:不缩放图片,只显示图片的左下边区域
bottom right:不缩放图片,只显示图片的右下边区域
二、视频展示
<template>
<view>
<view>
<page-head :title="title"></page-head>
<view class="uni-padding-wrap uni-common-mt" v-if="showVideo">
<view>
<video id="myVideo" src="https://img.cdn.aliyun.dcloud.net.cn/guide/uniapp/%E7%AC%AC1%E8%AE%B2%EF%BC%88uni-app%E4%BA%A7%E5%93%81%E4%BB%8B%E7%BB%8D%EF%BC%89-%20DCloud%E5%AE%98%E6%96%B9%E8%A7%86%E9%A2%91%E6%95%99%E7%A8%8B@20181126-lite.m4v"
@error="videoErrorCallback" :danmu-list="danmuList" enable-danmu danmu-btn controls poster="https://img-cdn-qiniu.dcloud.net.cn/uniapp/doc/poster.png"></video>
</view>
<!-- #ifndef MP-ALIPAY || MP-TOUTIAO -->
<view class="uni-list uni-common-mt">
<view class="uni-list-cell">
<view>
<view class="uni-label">弹幕内容</view>
</view>
<view class="uni-list-cell-db">
<input v-model="danmuValue" class="uni-input" type="text" placeholder="在此处输入弹幕内容" />
</view>
</view>
</view>
<view class="uni-btn-v">
<button @click="sendDanmu" class="page-body-button">发送弹幕</button>
</view>
<!-- #endif -->
</view>
</view>
</view>
</view>
</template>
<script>
export default {
data() {
return {
title: 'video',
src: '',
danmuList: [{
text: '第 1s 出现的弹幕',
color: '#ff0000',
time: 1
},
{
text: '第 3s 出现的弹幕',
color: '#ff00ff',
time: 3
}
],
danmuValue: '',
showVideo: false
}
},
onReady: function(res) {
// #ifndef MP-ALIPAY || MP-TOUTIAO
this.videoContext = uni.createVideoContext('myVideo')
// #endif
// #ifdef APP-PLUS || MP-BAIDU
setTimeout(()=>{
this.showVideo = true
},350)
// #endif
// #ifndef APP-PLUS || MP-BAIDU
this.showVideo = true
// #endif
},
methods: {
sendDanmu: function() {
this.videoContext.sendDanmu({
text: this.danmuValue,
color: this.getRandomColor()
});
this.danmuValue = '';
},
videoErrorCallback: function(e) {
uni.showModal({
content: e.target.errMsg,
showCancel: false
})
},
getRandomColor: function() {
const rgb = []
for (let i = 0; i < 3; ++i) {
let color = Math.floor(Math.random() * 256).toString(16)
color = color.length == 1 ? '0' + color : color
rgb.push(color)
}
return '#' + rgb.join('')
}
}
}
</script>
<style>
video {
width: 690rpx;
}
</style>

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