Flutter顯示用戶友好界面，而非異常報紅

Flutter全局錯誤頁面處理

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    ErrorWidget.builder = (FlutterErrorDetails errorDetails) {
      return getErrorWidget(context, errorDetails);//處理全局錯誤頁面
    };
    return new MaterialApp(
      debugShowCheckedModeBanner: false, 
      theme: new ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: SplashPage(), //啓動MainPage
    );
  }

  Widget getErrorWidget(BuildContext context, FlutterErrorDetails error) {
    return Center(
      child: Text(
        "頁面加載錯誤，請聯繫管理員!",
        style: TextStyle(
          color: Colors.blue,
          fontSize: 14,
        ),
      ),
    );
  }
}