查看“实践：canvas的引入”的源代码

since 5 分钟

index.js

 var app = getApp();

 ...
 app.globalData.uploadData = res;


scene,js

 upload ： function {
     //   从app里面获取数据
     var uploadData = app.globalData.uploadData;
}


==添加跳转==
index.js:
  uploadPhto function {
  wx.navigateTo ({
     url:
  })


scene.js:

  console.log(uploadData)   

可以用bejson 网站 转换json格式

==画图片==
const ctx = wx.createCanvastext("scene");
ctx.drawImage(uploadData.tempFilePaths[0],0,0);
ctx.draw();