this.$apply()

chooseVideo(e) {

this.fileInfo = {}

let that = this

wx.chooseVideo({

sourceType: ['album', 'camera'],

maxDuration: 60,

camera: 'back',

success: function(res) {

that.fileInfo = res

that.$apply()   // 页面有变化

}

})

this.$apply() // 页面无变化

}

 

<view>

<view wx:if="{{fileInfo.thumbTempFilePath===undefined}}">

<view>

<image src="{{notHere.commonCfg.localImgPath}}icon-plus-16.svg" @tap="chooseVideo(e)"></image>

</view>

</view>

<view wx:else>

<view @tap="chooseVideo(e)">

<video src="{{fileInfo.tempFilePath}}" enable-danmu danmu-btn autoplay poster="{{fileInfo.thumbTempFilePath}}"></video>

</view>

</view>

</view>