ionic 3.X实现手写板签名

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• 
  探路者2050:请问下老师，这样用了签字板，在打包的时候会报错，碰到过吗？ ionic cordova run android --prod --release， 报如下错：
  
  [09:27:03] typescript error
  Type SignForPcPage in E:/ionic3/lims-mobile-app/src/pages/sign-for-pc/sign-for-pc.ts is part of the
  declarations of 2 modules: AppModule in E:/ionic3/lims-mobile-app/src/app/app.module.ts and
  SignForPcPageModule in E:/ionic3/lims-mobile-app/src/pages/sign-for-pc/sign-for-pc.module.ts! Please
  consider moving SignForPcPage in E:/ionic3/lims-mobile-app/src/pages/sign-for-pc/sign-for-pc.ts to a higher
  module that imports AppModule in E:/ionic3/lims-mobile-app/src/app/app.module.ts and SignForPcPageModule in
  E:/ionic3/lims-mobile-app/src/pages/sign-for-pc/sign-for-pc.module.ts. You can also create a new NgModule
  that exports and includes SignForPcPage in E:/ionic3/lims-mobile-app/src/pages/sign-for-pc/sign-for-pc.ts
  then import that NgModule in AppModule in E:/ionic3/lims-mobile-app/src/app/app.module.ts and
  SignForPcPageModule in E:/ionic3/lims-mobile-app/src/pages/sign-for-pc/sign-for-pc.module.ts.
  
  Error: The Angular AoT build failed. See the issues above
  at E:\ionic3\lims-mobile-app\node_modules\@ionic\app-scripts\dist\aot\aot-compiler.js:237:55
  at step (E:\ionic3\lims-mobile-app\node_modules\@ionic\app-scripts\dist\aot\aot-compiler.js:32:23)
  at Object.next (E:\ionic3\lims-mobile-app\node_modules\@ionic\app-scripts\dist\aot\aot-compiler.js:13:53)
  at fulfilled (E:\ionic3\lims-mobile-app\node_modules\@ionic\app-scripts\dist\aot\aot-compiler.js:4:58)
  at <anonymous>
• 
  探路者2050:签完名后图片无法显示，请问老师，存储路径不对么

  YuRi_1:signatureImage赋值给一个img的 src，就可以展示了