git-touch-android-ios-app/lib/scaffolds/simple.dart

import 'package:flutter/material.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter/widgets.dart';
import '../providers/settings.dart';

typedef WidgetBuilder = Widget Function();

class SimpleScaffold extends StatelessWidget {
  final Widget title;
  final WidgetBuilder bodyBuilder;
  final Widget trailing;
  final List<Widget> actions;
  final PreferredSizeWidget bottom;

  SimpleScaffold({
    @required this.title,
    @required this.bodyBuilder,
    this.trailing,
    this.actions,
    this.bottom,
  });

  @override
  Widget build(BuildContext context) {
    switch (SettingsProvider.of(context).theme) {
      case ThemeMap.cupertino:
        return CupertinoPageScaffold(
          navigationBar:
              CupertinoNavigationBar(middle: title, trailing: trailing),
          child: SafeArea(
            child: SingleChildScrollView(child: bodyBuilder()),
          ),
        );
      default:
        return Scaffold(
          appBar: AppBar(
            title: title,
            actions: actions,
            bottom: bottom,
          ),
          body: SingleChildScrollView(child: bodyBuilder()),
        );
    }
  }
}