Norbert515

              child: Column(
                children: <Widget>[
                  Flexible(
                    flex: 4,
                    child: new Column(
                      children: <Widget>[
                        // Your children ..
                      ],
                    ),
                  ),

Norbert515

    // The minimum insets for contents of the Scaffold to keep visible.
    final EdgeInsets minInsets = mediaQuery.padding.copyWith(
      bottom: widget.resizeToAvoidBottomPadding ? mediaQuery.viewInsets.bottom : 0.0,
    );

Norbert515

import 'package:flutter/material.dart';

void main() => runApp(new MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return new MaterialApp(
      title: 'Flutter Demo',
      theme: new ThemeData(

Norbert515

class Repository {

  static final Repository _repo = new Repository._internal();

  BookDatabase database;

  static Repository get() {
    return _repo;
  }

Norbert515

class FadeRoute<T> extends MaterialPageRoute<T> {
  FadeRoute({ WidgetBuilder builder, RouteSettings settings })
      : super(builder: builder, settings: settings);

  @override
  Widget buildTransitions(BuildContext context,
      Animation<double> animation,
      Animation<double> secondaryAnimation,
      Widget child) {
    if (settings.isInitialRoute)

Norbert515

      onTap: (){
        Navigator.of(context).push(
            new FadeRoute(
              builder: (BuildContext context) => new BookNotesPage(bookState),
              settings: new RouteSettings(name: '/notes', isInitialRoute: false),
            ));
      },

Norbert515

                    new Hero(
                      child: new Image.network(bookState.url),
                      tag: bookState.id,
                    ):

Norbert515

I/flutter ( 5025): ══╡ EXCEPTION CAUGHT BY GESTURE ╞═══════════════════════════════════════════════════════════════════
I/flutter ( 5025): The following assertion was thrown while handling a gesture:
I/flutter ( 5025): 'package:flutter/src/material/page.dart': Failed assertion: line 84 pos 12: 'opaque': is not true.
I/flutter ( 5025): 
I/flutter ( 5025): Either the assertion indicates an error in the framework itself, or we should provide substantially
I/flutter ( 5025): more information in this error message to help you determine and fix the underlying cause.
I/flutter ( 5025): In either case, please report this assertion by filing a bug on GitHub:
I/flutter ( 5025):   https://github.com/flutter/flutter/issues/new
I/flutter ( 5025): 
I/flutter ( 5025): When the exception was thrown, this was the stack:

Norbert515

  @override
  void initState() {
    super.initState();
    _textController = new TextEditingController(text: widget.book.notes);
    subject.stream.debounce(new Duration(milliseconds: 400)).listen((text){
      widget.book.notes = text;
      BookDatabase.get().updateBook(widget.book);
    });

  }

Norbert515

                            child: new IconButton(
                              icon: bookState.starred? new Icon(Icons.star): new Icon(Icons.star_border),
                              color: Colors.black,
                              onPressed: (){
                                setState(() {
                                  bookState.starred = !bookState.starred;
                                });
                                BookDatabase.get().updateBook(bookState);
                              },
                            ),