https://developers.weixin.qq.com/miniprogram/dev/api/canvas/wx.createCanvasContext.html
不让使用这个接口
新接口的详细说明呢?
https://developers.weixin.qq.com/miniprogram/dev/component/canvas.html 不是有代码片段吗
https://developers.weixin.qq.com/miniprogram/dev/api/canvas/Canvas.html