微信小程序之音乐控制播放（audio的API）

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wx.getBackgroundAudioPlayerState({
    success: function(res) {
        var status = res.status
        var dataUrl = res.dataUrl
        var currentPosition = res.currentPosition
        var duration = res.duration
        var downloadPercent = res.downloadPercent
    }
})

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wx.playBackgroundAudio({
    dataUrl: '',
    title: '',
    coverImgUrl: ''
})

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wx.seekBackgroundAudio({
    position: 30
})

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<view class="zn-uploadimg">
	<button type="primary" bindtap="listenerButtonPlay">播放</button>
	<button type="primary" bindtap="listenerButtonPause">暂停</button>
	<button type="primary" bindtap="listenerButtonSeek">设置播放进度</button>
	<button type="primary" bindtap="listenerButtonStop">停止播放</button>
	<button type="primary" bindtap="listenerButtonGetPlayState">获取播放状态</button>
</view>

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.zn-uploadimg{
    padding:1rem;
}
.zn-uploadimg button{
    margin:10px;
}

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//record.js 
//获取应用实例  
Page({
	data:{
	// text:"这是一个页面"
	},
	onLoad:function(options){
		// 页面初始化 options为页面跳转所带来的参数
		/**
		 * 监听音乐播放
		 */
		wx.onBackgroundAudioPlay(function() {
		    console.log('onBackgroundAudioPlay')
		})

		/**
		 * 监听音乐暂停
		 */
		wx.onBackgroundAudioPause(function() {
		    console.log('onBackgroundAudioPause')
		})

		/**
		 * 监听音乐停止
		 */
		wx.onBackgroundAudioStop(function() {
		    console.log('onBackgroundAudioStop')
		})

	},//播放音乐
	listenerButtonPlay: function() {
	  	wx.playBackgroundAudio({
			//播放地址
			dataUrl: 'http://sc1.111ttt.com/2016/1/09/28/202280605509.mp3',
			title: '青云志',
			//图片地址
			coverImgUrl: 'http://r1.ykimg.com/050E0000576B75F667BC3C136B06E4E7'

	  	})
	},
	/**
	* 播放状态
	*/
	listenerButtonGetPlayState: function() {
	    wx.getBackgroundAudioPlayerState({
	        success: function(res) {
	          console.log(res)
	          //duration 总时长
	          //currentPosition 当前播放位置
	          //status 播放状态
	          //downloadPercent 下载状况 100 即为100%
	          //dataUrl 当前播放音乐地址
	        }
	    }) 
	},
	/**
	* 监听button暂停按钮
	*/
	listenerButtonPause: function() {
	   wx.pauseBackgroundAudio();
	},
	/**
	* 设置进度
	*/
	listenerButtonSeek: function() {
	    wx.seekBackgroundAudio({
	        position: 30
	    })
	},
	/**
	*停止播放 
	*/
	listenerButtonStop: function() {
	    wx.stopBackgroundAudio()
	}
})