代码片段：https://https://developers.weixin.qq.com/s/itksKBmF7lfd 使用drawImage绘制图片，图片仅显示一小部分，原始图片： [图片] 显示状态： [图片] 实在找不到原因了，非常简单的代码： JS: const app = getApp() Page({   data: {     isShowImage: true,     clientwidth: 360,     clientheight: 640,     pixelratio: 3,     ratio: 0,     src: '/index/1.jpg'   },   onLoad: function () {     var that = this;     that.canvas = wx.createCanvasContext("image-canvas", that)     that.canvas.drawImage(that.data.src, 0, 0, that.data.clientwidth, that.data.clientheight)     that.canvas.draw()   } }) wxml: <canvas canvas-id="image-canvas" style='width:{{clientidth}}px; height:{{clientHeight}}px;'></canvas>

[图片] [图片] [图片] [图片]