小程序中实现录音功能（按住录制上滑取消）

1.template文本，提供一个按住录制的按钮

<view class="tip-touchmove" wx:if="{{showCancelType==2}}">
    上滑取消
</view>
<view class="tip-touchmove" wx:if="{{showCancelType==3}}">
    松开手指，取消录音
</view>

<view class="voice-tool" catch:touchend="onTouchEnd" bind:touchstart="onTouchStart"
                  bind:longpress="onLongpress" catch:touchmove="onTouchMove">
                <view class="tool-text">按住说话录音</view>
            </view>

2.script文本，

recordInit---录音权限是否开启

duration---录音的有效时长

onTouchStart(e) {
                this.$apply();
                if (!this.recordInit) {
                    this.judgeRecord();
                    return false;
                }
            },
            onLongpress(e) {
                if (!this.recordInit) {
                    return false;
                }
　　　　　　　　　　//在这里处理录音开始之后页面上的显示效果

                this.$apply();
                const RecorderManager = wx.getRecorderManager();
                RecorderManager.onStart((res) => {
                    console.log('开始录音了')
                    this.recording = true;
                    this.startTime = new Date().getTime();
                    this.vInterval = setInterval(()=>{
                        let duration = (new Date().getTime() - this.startTime)/1000;//秒
                        this.duration = parseInt(duration) + '′' + parseInt((parseFloat(duration) -
                            parseInt(duration)) * 100) + "″";
                        this.widthPersent = ((duration/60)*100) + '%';
                        this.$apply();
                    }, 60);
                    this.$apply();
                })
                RecorderManager.onStop((res) => {
                    console.log('结束录音了', res);
                   //这里处理录音结束之后的显示效果this.$apply();
                    if (this.showCancelType == 3) {
                        this.duration= '00′00″';
                        this.startTime= '';
                        this.widthPersent= '0%';
                        this.showCancelType = 1;
                        clearInterval(this.vInterval)
                        this.$apply();
                    }else {
                        this.tempFilePath = res.tempFilePath;
                        this.recording = false;
                        clearInterval(this.vInterval)
                        this.$apply();
                        let duration = Math.ceil(res.duration/1000);
                        //这里进行录音结束之后的下一步操作this.showCancelType = 1;
                        this.$apply();
                    }

                });
                RecorderManager.start({
                    duration: 60000,
                    format: 'mp3'
                });
                this.startPageY = e.touches[0].clientY;
                this.showCancelType = 2;
                this.$apply();
            },
            onTouchMove(e) {
                this.recording = true;
                if (this.startPageY - e.touches[0].clientY > 50) {
                    //松开手指
                    this.showCancelType = 3;
                } else {
                    //上划取消
                    this.showCancelType = 2;
                }
                this.$apply();
                console.log('onTouchMove');
            },
            onTouchEnd() {
                console.log('onTouchEnd');
                const RecorderManager = wx.getRecorderManager();
                RecorderManager.stop();

            },