WeChat applet development recorder, audio playback, animation

This article mainly shares with you the WeChat applet development of recorders, audio playback, and animations. I hope it can help everyone.

1. In order to see clearly, the audio list is not loaded at the beginning. Just move the code forward.

2. When you press and hold the recording button, a microphone will appear. The microphone in the middle is a frame animation.

In fact, it uses js to control the picture Show hide. There is nothing to say. What is worth talking about here is recording. After WeChat’s recording API, if the recording time is too short, the recording will fail. So you still need to deal with it when it fails. The recording time limit and WeChat voice are Same.60 seconds.

##3. I only load the list after the recording is completed.

The picture below is the list information obtained from the files stored in WeChat. There are storage paths, creation times, and file sizes.

The files here may It’s not just audio. I’m not making any judgments here. The following paths are all wx:file//store_...

I also looked for them. In Tencent/micromsg/wxafiles/ You can find it in the wx..../ directory.

The time is after formatting. The file size is B, and the conversion to KB is as follows.

The mobile phone directory is as follows. But it cannot be played after opening it. The reason is currently unknown.

##The following is the full name of the file.

1.tempFilePath: Temporary file after recording. It cannot be used normally after entering the applet for the second time.

2.savedFilePath: Permanently saved file path. It is worth noting that WeChat Only 100M of storage space is given. It is better to upload it to the backend as soon as possible.

##4. Play the recorded audio.

Click on the item to hear your voice. Don’t be scared by yourself. Haha.

## Code above:

1.index.wxml

<!--index.wxml-->  
<scroll-view>  
	<view wx:if="{{voices}}" class="common-list" style="margin-bottom:120rpx;">  
		<block  wx:for="{{voices}}">  
		    <view class="board">  
		        <view class="cell"  >  
		            <view class="cell-bd" data-key="{{item.filePath}}" bindtap="gotoPlay" >   
		                <view  class="date">存储路径:{{item.filePath}}</view>  
		                <view  class="date" >存储时间:{{item.createTime}}</view>  
		                <view  class="date">音频大小:{{item.size}}KB</view>  
		            </view>      
		        </view>  
		    </view>  
		</block>  
	</view>  
</scroll-view>   
<view  wx:if="{{isSpeaking}}"  class="speak-style">  
	<image class="sound-style" src="../../images/voice_icon_speech_sound_1.png" ></image>  
	<image wx:if="{{j==2}}" class="sound-style" src="../images/voice_icon_speech_sound_2.png" ></image>  
	<image wx:if="{{j==3}}" class="sound-style" src="../images/voice_icon_speech_sound_3.png" ></image>  
	<image wx:if="{{j==4}}" class="sound-style" src="../images/voice_icon_speech_sound_4.png" ></image>  
	<image wx:if="{{j==5}}"class="sound-style" src="../images/voice_icon_speech_sound_5.png" ></image>  
</view>  
<view class="record-style">  
	<button class="btn-style" bindtouchstart="touchdown" bindtouchend="touchup">按住 录音</button>  
</view>

2.index.wxss

/**index.wxss**/  
.speak-style{  
    position: relative;  
    height: 240rpx;  
    width: 240rpx;  
    border-radius: 20rpx;  
    margin: 50% auto;  
    background: #26A5FF;  
}  
.item-style{  
    margin-top: 30rpx;  
    margin-bottom: 30rpx;  
}  
.text-style{  
    text-align: center;  
  
}  
.record-style{  
    position: fixed;  
    bottom: 0;  
    left: 0;  
    height: 120rpx;  
    width: 100%;  
}  
.btn-style{  
  margin-left: 30rpx;  
  margin-right: 30rpx;  
}  
  
.sound-style{  
  position: absolute;  
  width: 74rpx;  
  height:150rpx;  
  margin-top: 45rpx;  
  margin-left: 83rpx;  
}  
  
  
.board {  
  overflow: hidden;  
  border-bottom: 2rpx solid #26A5FF;    
}  
/*列布局*/  
.cell{  
    display: flex;  
    margin: 20rpx;  
}  
.cell-hd{  
    margin-left: 10rpx;  
    color: #885A38;  
}  
.cell .cell-bd{  
    flex:1;  
    position: relative;  
     
}  
/**只显示一行*/  
.date{  
    font-size: 30rpx;  
    text-overflow: ellipsis;   
    white-space:nowrap;  
    overflow:hidden;   
}

##3.index.js

//index.js  
//获取应用实例  
var app = getApp()  
Page({  
  data: {  
    j: 1,//帧动画初始图片  
    isSpeaking: false,//是否正在说话  
    voices: [],//音频数组  
  },  
  onLoad: function () {  
  },  
  //手指按下  
  touchdown: function () {  
    console.log("手指按下了...")  
    console.log("new date : " + new Date)  
    var _this = this;  
    speaking.call(this);  
    this.setData({  
      isSpeaking: true  
    })  
    //开始录音  
    wx.startRecord({  
      success: function (res) {  
        //临时路径,下次进入小程序时无法正常使用  
        var tempFilePath = res.tempFilePath  
        console.log("tempFilePath: " + tempFilePath)  
        //持久保存  
        wx.saveFile({  
          tempFilePath: tempFilePath,  
          success: function (res) {  
            //持久路径  
            //本地文件存储的大小限制为 100M  
            var savedFilePath = res.savedFilePath  
            console.log("savedFilePath: " + savedFilePath)  
          }  
        })  
        wx.showToast({  
          title: '恭喜!录音成功',  
          icon: 'success',  
          duration: 1000  
        })  
        //获取录音音频列表  
        wx.getSavedFileList({  
          success: function (res) {  
            var voices = [];  
            for (var i = 0; i < res.fileList.length; i++) {  
              //格式化时间  
              var createTime = new Date(res.fileList[i].createTime)  
              //将音频大小B转为KB  
              var size = (res.fileList[i].size / 1024).toFixed(2);  
              var voice = { filePath: res.fileList[i].filePath, createTime: createTime, size: size };  
              console.log("文件路径: " + res.fileList[i].filePath)  
              console.log("文件时间: " + createTime)  
              console.log("文件大小: " + size)  
              voices = voices.concat(voice);  
            }  
            _this.setData({  
              voices: voices  
            })  
          }  
        })  
      },  
      fail: function (res) {  
        //录音失败  
        wx.showModal({  
          title: &#39;提示&#39;,  
          content: &#39;录音的姿势不对!&#39;,  
          showCancel: false,  
          success: function (res) {  
            if (res.confirm) {  
              console.log(&#39;用户点击确定&#39;)  
              return  
            }  
          }  
        })  
      }  
    })  
  },  
  //手指抬起  
  touchup: function () {  
    console.log("手指抬起了...")  
    this.setData({  
      isSpeaking: false,  
    })  
    clearInterval(this.timer)  
    wx.stopRecord()  
  },  
  //点击播放录音  
  gotoPlay: function (e) {  
    var filePath = e.currentTarget.dataset.key;  
    //点击开始播放  
    wx.showToast({  
      title: &#39;开始播放&#39;,  
      icon: &#39;success&#39;,  
      duration: 1000  
    })  
    wx.playVoice({  
      filePath: filePath,  
      success: function () {  
        wx.showToast({  
          title: &#39;播放结束&#39;,  
          icon: &#39;success&#39;,  
          duration: 1000  
        })  
      }  
    })  
  }  
})  
//麦克风帧动画  
function speaking() {  
  var _this = this;  
  //话筒帧动画  
  var i = 1;  
  this.timer = setInterval(function () {  
    i++;  
    i = i % 5;  
    _this.setData({  
      j: i  
    })  
  }, 200);  
}

Note:

1. The recorded audio is stored in the local temporary path by default. The second time It cannot be used normally after entering the mini program. It can be saved persistently, but the local file size limit is 100M. It is best to upload it to the background.

2.录音的时间不能太短.否则会失败;也不能超过60秒.到了60秒会自动停止录音.

3.音频播放不能同时播放多个音频.看文档.微信小程序 播放音频文档

1.为了进来看得清楚.刚开始没有加载音频列表.代码往前挪一挪即可.

2.按住 录音按钮的时候会出现麦克风.中间的麦克风是个帧动画.

其实就是用js控制图片显示隐藏.没啥好说的.这里值得说一说的是录音.微信的录音API后,如果录音时间太短,会录音失败.所以fail的时候还是需要处理一下.录音时间的限制和微信语音是一样的.60秒.

3.我在录音完成后才加载列表.

下图就是从微信存储的文件里获取到的列表信息.有储存路径,创建时间,文件大小.

这里的文件可能不只是音频.这里我没做判断.下面的路径都是wx:file//store_...

我也去找了下.在Tencent/micromsg/wxafiles/wx..../这一级目录就能找到了.

时间是格式化之后的.文件大小是B,转成KB如下.

手机目录如下.但是打开之后播放不了.目前原因不明.

下面是文件全名称.

1.tempFilePath : 录音之后的临时文件.第二次进入小程序就不能正常使用了.

2.savedFilePath :持久保存的文件路径.值得注意的是微信只给100M的储存空间.还是尽早上传到后台吧.

4.播放录音音频.

点击item就能听到你的声音了.别被自己吓住.哈哈.

上代码:

1.index.wxml

<!--index.wxml-->  
<scroll-view>  
	<view wx:if="{{voices}}" class="common-list" style="margin-bottom:120rpx;">  
		<block  wx:for="{{voices}}">  
		    <view class="board">  
		        <view class="cell"  >  
		            <view class="cell-bd" data-key="{{item.filePath}}" bindtap="gotoPlay" >   
		                <view  class="date">存储路径:{{item.filePath}}</view>  
		                <view  class="date" >存储时间:{{item.createTime}}</view>  
		                <view  class="date">音频大小:{{item.size}}KB</view>  
		            </view>      
		        </view>  
		    </view>  
		</block>  
	</view>  
</scroll-view>   
<view  wx:if="{{isSpeaking}}"  class="speak-style">  
	<image class="sound-style" src="../../images/voice_icon_speech_sound_1.png" ></image>  
	<image wx:if="{{j==2}}" class="sound-style" src="../images/voice_icon_speech_sound_2.png" ></image>  
	<image wx:if="{{j==3}}" class="sound-style" src="../images/voice_icon_speech_sound_3.png" ></image>  
	<image wx:if="{{j==4}}" class="sound-style" src="../images/voice_icon_speech_sound_4.png" ></image>  
	<image wx:if="{{j==5}}"class="sound-style" src="../images/voice_icon_speech_sound_5.png" ></image>  
</view>  
<view class="record-style">  
	<button class="btn-style" bindtouchstart="touchdown" bindtouchend="touchup">按住 录音</button>  
</view>

2.index.wxss

/**index.wxss**/  
.speak-style{  
    position: relative;  
    height: 240rpx;  
    width: 240rpx;  
    border-radius: 20rpx;  
    margin: 50% auto;  
    background: #26A5FF;  
}  
.item-style{  
    margin-top: 30rpx;  
    margin-bottom: 30rpx;  
}  
.text-style{  
    text-align: center;  
  
}  
.record-style{  
    position: fixed;  
    bottom: 0;  
    left: 0;  
    height: 120rpx;  
    width: 100%;  
}  
.btn-style{  
  margin-left: 30rpx;  
  margin-right: 30rpx;  
}  
  
.sound-style{  
  position: absolute;  
  width: 74rpx;  
  height:150rpx;  
  margin-top: 45rpx;  
  margin-left: 83rpx;  
}  
  
  
.board {  
  overflow: hidden;  
  border-bottom: 2rpx solid #26A5FF;    
}  
/*列布局*/  
.cell{  
    display: flex;  
    margin: 20rpx;  
}  
.cell-hd{  
    margin-left: 10rpx;  
    color: #885A38;  
}  
.cell .cell-bd{  
    flex:1;  
    position: relative;  
     
}  
/**只显示一行*/  
.date{  
    font-size: 30rpx;  
    text-overflow: ellipsis;   
    white-space:nowrap;  
    overflow:hidden;   
}

3.index.js

//index.js  
//获取应用实例  
var app = getApp()  
Page({  
  data: {  
    j: 1,//帧动画初始图片  
    isSpeaking: false,//是否正在说话  
    voices: [],//音频数组  
  },  
  onLoad: function () {  
  },  
  //手指按下  
  touchdown: function () {  
    console.log("手指按下了...")  
    console.log("new date : " + new Date)  
    var _this = this;  
    speaking.call(this);  
    this.setData({  
      isSpeaking: true  
    })  
    //开始录音  
    wx.startRecord({  
      success: function (res) {  
        //临时路径,下次进入小程序时无法正常使用  
        var tempFilePath = res.tempFilePath  
        console.log("tempFilePath: " + tempFilePath)  
        //持久保存  
        wx.saveFile({  
          tempFilePath: tempFilePath,  
          success: function (res) {  
            //持久路径  
            //本地文件存储的大小限制为 100M  
            var savedFilePath = res.savedFilePath  
            console.log("savedFilePath: " + savedFilePath)  
          }  
        })  
        wx.showToast({  
          title: '恭喜!录音成功',  
          icon: 'success',  
          duration: 1000  
        })  
        //获取录音音频列表  
        wx.getSavedFileList({  
          success: function (res) {  
            var voices = [];  
            for (var i = 0; i < res.fileList.length; i++) {  
              //格式化时间  
              var createTime = new Date(res.fileList[i].createTime)  
              //将音频大小B转为KB  
              var size = (res.fileList[i].size / 1024).toFixed(2);  
              var voice = { filePath: res.fileList[i].filePath, createTime: createTime, size: size };  
              console.log("文件路径: " + res.fileList[i].filePath)  
              console.log("文件时间: " + createTime)  
              console.log("文件大小: " + size)  
              voices = voices.concat(voice);  
            }  
            _this.setData({  
              voices: voices  
            })  
          }  
        })  
      },  
      fail: function (res) {  
        //录音失败  
        wx.showModal({  
          title: &#39;提示&#39;,  
          content: &#39;录音的姿势不对!&#39;,  
          showCancel: false,  
          success: function (res) {  
            if (res.confirm) {  
              console.log(&#39;用户点击确定&#39;)  
              return  
            }  
          }  
        })  
      }  
    })  
  },  
  //手指抬起  
  touchup: function () {  
    console.log("手指抬起了...")  
    this.setData({  
      isSpeaking: false,  
    })  
    clearInterval(this.timer)  
    wx.stopRecord()  
  },  
  //点击播放录音  
  gotoPlay: function (e) {  
    var filePath = e.currentTarget.dataset.key;  
    //点击开始播放  
    wx.showToast({  
      title: &#39;开始播放&#39;,  
      icon: &#39;success&#39;,  
      duration: 1000  
    })  
    wx.playVoice({  
      filePath: filePath,  
      success: function () {  
        wx.showToast({  
          title: &#39;播放结束&#39;,  
          icon: &#39;success&#39;,  
          duration: 1000  
        })  
      }  
    })  
  }  
})  
//麦克风帧动画  
function speaking() {  
  var _this = this;  
  //话筒帧动画  
  var i = 1;  
  this.timer = setInterval(function () {  
    i++;  
    i = i % 5;  
    _this.setData({  
      j: i  
    })  
  }, 200);  
}

注意:

1. The recorded audio is stored in a local temporary path by default. The applet cannot be used normally the second time it is entered. It can be saved persistently, but the local file size limit is 100M. It is best to upload it to the background.

2. The recording time cannot be too short. Otherwise it will fail; it cannot exceed 60 seconds. The recording will automatically stop after 60 seconds.

3. Audio playback cannot play multiple audios at the same time. See the documentation. WeChat applet plays audio documents

Related recommendations:

WeChat applet simulates drop-down menu development example

WeChat applet development pop-up box implementation method

WeChat applet implements detailed method of uploading files after recording

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