ios报错：fail no image
 
return new Promise((resolve, reject) => {
      console.log("第二步处理中11")
      wx.canvasToTempFilePath({
        destWidth: idestWidth,
        destHeight: idestHeight,
        canvas,
        quality: 1,
        success(res) {
          console.log("第二步处理中2")
          tempImages = res.tempFilePath;
          // const oldImages = that.data.tempImages;
          // tempImages = (oldImages).concat(tempImages)
          resolve(tempImages)
          // that.setData({
          //   tempImages: tempImages
          // })


        },
        fail:(err)=>{
          console.log(err)
        }
      })
    })