微信小程序canvas绘制图片真机不显示问题

用canvas绘制图片的时候，模拟器上正常显示，真机上不显示

const ctx = wx.createCanvasContext('canvasImg');var imgUrl = 'https://static./1119095703c82818277.png';ctx.drawImage(imgUrl, 40, 100, 200, 200);ctx.draw();

用 wx.getImageInfo 将网络图片转成本地路径，在真机就能正常显示了

const ctx = wx.createCanvasContext('canvasImg') var imgUrl = 'https://static./1119095703c82818277.png';//将网络图片转成本地路径wx.getImageInfo({src: imgUrl,success: function(res) {ctx.drawImage(res.path, 40, 100, 200, 200)ctx.draw(); }})