Eric Huang

"可以试一下这个API，wx.canvasToTempFilePath(OBJECT, this) 然后在分享配置里 即 Page.onShareAppMessage(Object) 方法指定图片的Url".

刚刚试了下好像不行啊

Page({   onReady: function (e) {      // 使用 wx.createContext 获取绘图上下文 context      var context = wx.createCanvasContext('canvas')        context.setStrokeStyle("#00ff00")      context.setLineWidth(5)      context.rect(0, 0, 200, 200)      context.stroke()      context.setStrokeStyle("#ff0000")      context.setLineWidth(2)      context.moveTo(160, 100)      context.arc(100, 100, 60, 0, 2 * Math.PI, true)      context.moveTo(140, 100)      context.arc(100, 100, 40, 0, Math.PI, false)      context.moveTo(85, 80)      context.arc(80, 80, 5, 0, 2 * Math.PI, true)      context.moveTo(125, 80)      context.arc(120, 80, 5, 0, 2 * Math.PI, true)      context.stroke()      context.draw();       wx.canvasToTempFilePath({         x: 100,         y: 200,         width: 50,         height: 50,         destWidth: 100,         destHeight: 100,         canvasId: 'canvas',         success: function(res) {           console.log(res.tempFilePath);           wx.updateShareMenu({             title: '测试',             path: 'pages/follow/follow',             imageUrl: res.tempFilePath           })         }       })    },   onShareAppMessage() {     return {       title: '测试',       imageUrl: 'https://www.google.com.hk/images/branding/googlelogo/2x/googlelogo_color_272x92dp.png'     }   } });

理论上分享的图应该是canvas里面画的图

但是好像不行，还是初始的onShareAppMessage里面那张google的图

然后打开了wx.canvasToTempFilePath(OBJECT, this) 生成的临时路径（上图右边console的链接），403拒绝了

是不是跟权限有关系？ 如果你已经实现了这个功能，麻烦指导下[狗头]，蟹蟹大锅~