小程序给视频加默认图片封面，点击播放视频并停止播放上一个视频

实现的功能：

微信小程序视频组件添加图片封面,

点击图片播放视频,

点击下一个视频的封面图自动停止播放当前视频并播放点击的视频。

效果GIF图：

实现代码：

WXML

<view class=\'vv\' wx:for=\'{{vedio_data}}\' wx:key=\'\'>
  <view class=\'block\' style=\'margin-left:20rpx;\'>
    <image src=\'/img/1.png\' class=\'img1\' style=\'margin-left:20rpx\'></image>
    <text class=\'text\'>{{item.title}} </text>
    <view id=\"{{index}}\" class=\"cover\" style=\"display: {{ _index == index ? \'None\' : \'block\' }};\" bindtap=\"videoPlay\">
      <!-- 视频图层 -->
      <image class=\"videoVideo2\" src=\"{{item.img}}\" mode=\"scaleToFill\">
        <!-- 视频按钮 -->
        <image class=\"videoPlay\" src=\"/img/bf.png\" mode=\"scaleToFill\"></image>
      </image>
    </view>
  </view>
  <!-- 视频 -->
  <video src=\"{{item.url}}\" id=\"{{index}}\" class=\'video\' wx:if=\"{{_index == index}}\">
  </video>
</view>

js

var util = require(\'../../utils/util\');
var app = getApp();
Page({
  data: {
    videoPlay: null,
    vedio_data: [{
      title: \'视频标题1\',
      url: \'http://wxsnsdy.tc.qq.com/105/20210/snsdyvideodownload?filekey=30280201010421301f0201690402534804102ca905ce620b1241b726bc41dcff44e00204012882540400&bizid=1023&hy=SH&fileparam=302c020101042530230204136ffd93020457e3c4ff02024ef202031e8d7f02030f42400204045a320a0201000400\',
      img: \'https://ss3.bdstatic.com/70cFv8Sh_Q1YnxGkpoWK1HF6hhy/it/u=1437596250,215562873&fm=26&gp=0.jpg\',

    }, {
        title: \'视频标题2\',
        url: \'http://wxsnsdy.tc.qq.com/105/20210/snsdyvideodownload?filekey=30280201010421301f0201690402534804102ca905ce620b1241b726bc41dcff44e00204012882540400&bizid=1023&hy=SH&fileparam=302c020101042530230204136ffd93020457e3c4ff02024ef202031e8d7f02030f42400204045a320a0201000400\',
        img: \'https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1545625549289&di=4bf95a6bd0d05003dea5598aa516f718&imgtype=0&src=http%3A%2F%2Fi2.hdslb.com%2Fbfs%2Farchive%2F7cec9a37f417277ec1bb62840da6b9d9c2c22f05.jpg\',

    }]
  },
  // 点击cover播放，其它视频结束
  videoPlay: function(e) {
    var _index = e.currentTarget.id
    this.setData({
      _index: _index
    })
    //停止正在播放的视频
    var videoContextPrev = wx.createVideoContext(this.data._index)
    videoContextPrev.stop();
    setTimeout(function() {
      //将点击视频进行播放
      var videoContext = wx.createVideoContext(_index)
      videoContext.play();
    }, 500)
  }
})

css

.vv {
width: 700rpx;
height: 530rpx;
border-left: gainsboro 1px solid;
border-right: gainsboro 1px solid;
border-top: gainsboro 1px solid;
margin-bottom: 80rpx;
border-radius: 15rpx;
overflow: hidden;
position: relative;
top: 40rpx;
left: 20rpx;
}

/* 小图标 */
.img1 {
  width: 36rpx;
  height: 28rpx;
  margin-top: 30rpx;
}

/* 标题文字 */
.text {
  font-size: 28rpx;
  color: #585858;
  margin-left: 10rpx;
}

/* 视频 */
.video {
  width: 100%;
  height: 450rpx;
  margin-top: 20rpx;
  border-bottom-left-radius: 15rpx;
  border-bottom-right-radius: 15rpx;
}
.videoVideo2 {
   width: 703rpx;
    height: 453rpx;
  position: absolute;
  top: 80rpx;
  left: 20rpx;
  z-index: 99;
}
.videoPlay{
  position: absolute;
    width: 80rpx;
    height: 80rpx;
    top:45%;
    left: 45%;
    margin: -30rpx 0 0 -30rpx;
  z-index: 100;
}

/* 底部盒子 */
.bottom {
  width: 40rpx;
  height: 40rpx;
}