canvasToTempFilePath在真实手机上面不运行也不报错？ - WXOPEN Club

setTimeout(() => {

context.draw(true,()=>{

wx.canvasToTempFilePath({

x: 0,

y: 0,

width: 340,

height: 500,

destWidth: 680,

destHeight: 1000,

canvasId: 'share',

success: function (res) {

console.log(res.tempFilePath)

wx.saveImageToPhotosAlbum({

filePath: res.tempFilePath,

success: (res) => {

console.log(res)

that.setData({

showModal: false

})

wx.hideToast({

complete: (res) => {},

fail: (res) => {},

success: (res) => {},

})

fail: (err) => {

console.log(err)

that.setData({

showModal: false

})

wx.hideToast({

complete: (res) => {},

fail: (res) => {},

success: (res) => {},

})

}

})

fail: function (e) {

console.log(e)

}

})

});

}, 1000);

这是运行代码在开发工具上面能导出图片但是在真实手机上面就运行不起来

qye 1楼•4 年前

  canvasContext.drawImage(photoFilePath, - width / 2, - height / 2, width, height);
      canvasContext.draw(false, function () {
        // 将生成的canvas图片，转为真实图片
        setTimeout(() => {/* 大坑，Android真机上必须setTimeout延时后保存，不然会出错~~~开发者工具上无问题，ios下也无问题 */
          wx.canvasToTempFilePath({
           }), 2500);
      });

xiuying36 2楼•4 年前

draw的回调函数没有执行，目前这个问题无解，官方也不修复，目前的粗暴解决办法就是draw后面用settimeoutl来执行导出函数