微信小程序-媒体组件

audio

音频。

MediaError.code

示例代码：

<!-- audio.wxml -->
<audio poster="{{poster}}" name="{{name}}" author="{{author}}" src="{{src}}" id="myAudio" controls loop></audio>

<button type="primary" bindtap="audioPlay">播放</button>
<button type="primary" bindtap="audioPause">暂停</button>
<button type="primary" bindtap="audio14">设置当前播放时间为14秒</button>
<button type="primary" bindtap="audioStart">回到开头</button>

// audio.js
Page({
  onReady: function (e) {
    // 使用 wx.createAudioContext 获取 audio 上下文 context
    this.audioCtx = wx.createAudioContext('myAudio')
  },
  data: {
    poster: 'http://y.gtimg.cn/music/photo_new/T002R300x300M000003rsKF44GyaSk.jpg?max_age=2592000',
    name: '此时此刻',
    author: '许巍',
    src: 'http://ws.stream.qqmusic.qq.com/M500001VfvsJ21xFqb.mp3?guid=ffffffff82def4af4b12b3cd9337d5e7&uin=346897220&vkey=6292F51E1E384E06DCBDC9AB7C49FD713D632D313AC4858BACB8DDD29067D3C601481D36E62053BF8DFEAF74C0A5CCFADD6471160CAF3E6A&fromtag=46',
  },
  audioPlay: function () {
    this.audioCtx.play()
  },
  audioPause: function () {
    this.audioCtx.pause()
  },
  audio14: function () {
    this.audioCtx.seek(14)
  },
  audioStart: function () {
    this.audioCtx.seek(0)
  }
})

image

图片。

注：image组件默认宽度300px、高度225px

mode有12种模式，其中3种是缩放模式，9种是裁剪模式。

裁剪模式

示例：

<view class="page">
  <view class="page__hd">
    <text class="page__title">image</text>
    <text class="page__desc">图片</text>
  </view>
  <view class="page__bd">
    <view class="section section_gap" wx:for="{{array}}" wx:for-item="item">
      <view class="section__title">{{item.text}}</view>
      <view class="section__ctn">
        <image style="width: 200px; height: 200px; background-color: #eeeeee;" mode="{{item.mode}}" src="{{src}}"></image>
      </view>
    </view>
  </view>
</view>

Page({
  data: {
    array: [{
      mode: 'scaleToFill',
      text: 'scaleToFill：不保持纵横比缩放图片，使图片完全适应'
    }, {
      mode: 'aspectFit',
      text: 'aspectFit：保持纵横比缩放图片，使图片的长边能完全显示出来'
    }, {
      mode: 'aspectFill',
      text: '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'
    }, {
      mode: 'top',
      text: 'top：不缩放图片，只显示图片的顶部区域'
    }, {
      mode: 'bottom',
      text: 'bottom：不缩放图片，只显示图片的底部区域'
    }, {
      mode: 'center',
      text: 'center：不缩放图片，只显示图片的中间区域'
    }, {
      mode: 'left',
      text: 'left：不缩放图片，只显示图片的左边区域'
    }, {
      mode: 'right',
      text: 'right：不缩放图片，只显示图片的右边边区域'
    }, {
      mode: 'top left',
      text: 'top left：不缩放图片，只显示图片的左上边区域'
    }, {
      mode: 'top right',
      text: 'top right：不缩放图片，只显示图片的右上边区域'
    }, {
      mode: 'bottom left',
      text: 'bottom left：不缩放图片，只显示图片的左下边区域'
    }, {
      mode: 'bottom right',
      text: 'bottom right：不缩放图片，只显示图片的右下边区域'
    }],
    src: '../../resources/cat.jpg'
  },
  imageError: function(e) {
    console.log('image3发生error事件，携带值为', e.detail.errMsg)
  }
})

video

视频。

video标签认宽度300px、高度225px，设置宽高需要通过wxss设置width和height。

示例代码：

<view class="section tc">
  <video src="{{src}}"   controls ></video>
  <view class="btn-area">
    <button bindtap="bindButtonTap">获取视频</button>
  </view>
</view>

<view class="section tc">
  <video id="myVideo" src="http://wxsnsdy.tc.qq.com/105/20210/snsdyvideodownload?filekey=30280201010421301f0201690402534804102ca905ce620b1241b726bc41dcff44e00204012882540400&bizid=1023&hy=SH&fileparam=302c020101042530230204136ffd93020457e3c4ff02024ef202031e8d7f02030f42400204045a320a0201000400" binderror="videoErrorCallback" danmu-list="{{danmuList}}" enable-danmu danmu-btn controls></video>
  <view class="btn-area">
    <button bindtap="bindButtonTap">获取视频</button>
    <input bindblur="bindInputBlur"/>
    <button bindtap="bindSendDanmu">发送弹幕</button>
  </view>
</view>

function getRandomColor () {
  let rgb = []
  for (let i = 0 ; i ; ++i){
    let color = Math.floor(Math.random() * 256).toString(16)
    color = color.length == 1 ? '0' + color : color
    rgb.push(color)
  }
  return '#' + rgb.join('')
}

Page({
  onReady: function (res) {
    this.videoContext = wx.createVideoContext('myVideo')
  },
  inputValue: '',
    data: {
        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
      }
    ]
    },
  bindInputBlur: function(e) {
    this.inputValue = e.detail.value
  },
    bindButtonTap: function() {
        var that = this
        wx.chooseVideo({
            sourceType: ['album', 'camera'],
            maxDuration: 60,
            camera: ['front','back'],
            success: function(res) {
                that.setData({
                    src: res.tempFilePath
                })
            }
        })
    },
  bindSendDanmu: function () {
    this.videoContext.sendDanmu({
      text: this.inputValue,
      color: getRandomColor()
    })
  },
    videoErrorCallback: function(e) {
      console.log('视频错误信息:')
      console.log(e.detail.errMsg)
    }
})