-当前bug

-代码片段

我在视频元数据加载完后使用

createSelectorQuery

获取视频的上下文，

使用下面代码绘制到下面的节点上展示出来，但是安卓无法展示，IOS和开发者工具都可以，安卓需要点击一下播放再点击截图才行，

 seekComplete: function () {

      const {

        canvasWidth,

        canvasHeight,

        video

      } = this.data

      const Offcanvas = wx.createOffscreenCanvas({

        type: '2d',

        width: canvasWidth,

        height: canvasHeight,

        compInst: this,

      })

      const context = Offcanvas.getContext('2d')

      // console.log('离屏的canvas实例',canvas.getContext('2d'));

      context.clearRect(0, 0, canvasWidth, canvasHeight)

      context.drawImage(video, 0, 0, canvasWidth, canvasHeight)

      console.log(context, 'Offcanvas', video);

      setTimeout(() => {

        wx.canvasToTempFilePath({

          x: 0,

          y: 0,

          width: canvasWidth,

          height: canvasHeight,

          destWidth: canvasWidth,

          destHeight: canvasHeight,

          canvas: Offcanvas,

          success: res => {

            console.log('获取离屏canvas路径回调', res.tempFilePath);

            this.setData({

              coverImagePath: res.tempFilePath,

            });

            this.triggerEvent("captureSuccess", {

              coverImagePath: res.tempFilePath,

            });

          },

          fail: error => {

            console.error('获取失败', error)

          }

        })

      }, 300)