If I use Row() instead of Center(), it will not be displayed,just blank.
I expect a music player like layout.
Make 2 Row, the 1st Row contain "LeftMenu" and "Expanded Container" for content .
Putting this in scaffold gives you the left menu:
drawer: const Drawer(
child: Text("Left Menu")
),
Putting this inside scaffold body works. Expanded and a row:
Column(
children: [
Expanded(
child: Container(
color: Colors.green,
child: const Center(child: Text("1")),
)
),
Row(
children: const [
Text("1"),
SizedBox(width: 10),
Text("2"),
],
),
],
)
If you replace center with row, it probably displays but in the top left corner and not middle. Try to wrap your Row with Center and it should display in the middle. For the row you need to add a mainAxisAlignment.
import 'package:flutter/material.dart';
const Color darkBlue = Color.fromARGB(255, 18, 32, 47);
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
#override
Widget build(BuildContext context) {
return MaterialApp(
theme: ThemeData.dark().copyWith(
scaffoldBackgroundColor: darkBlue,
),
debugShowCheckedModeBanner: false,
home: Scaffold(
body: Center (child: Row(mainAxisAlignment: MainAxisAlignment.spaceEvenly,
children:[ Text('Left menu'),Text('Place container here')]
),),
),
);
}
}
This is actually the wrong question.
The real problem is: if the ListView is nested by Column, Row, it will not be displayed.
You need to use Expanded or Container on the outside and then nest it with Colmn or Row.
How can I open SpeedDial in a horizontal way in my project like this?
If there are other libraries, that is fine.
You can also create your own custom floating action button. But since you are open to packages too writing an answer in which you can achieve it using a package
Try https://pub.dev/packages/custom_floating_action_button
Add this to pubspec.yaml
custom_floating_action_button: ^0.0.3
You can wrap the scaffold with CustomFloatingActionButton
//add custom floating action button on top of your scaffold
//minimum 2 and maximum 5 items allowed
#override
Widget build(BuildContext context) {
return CustomFloatingActionButton(
body: Scaffold(
appBar: AppBar(
title: const Text('appbar title'),
),
body: Container(),
),
options: const [
CircleAvatar(
child: Icon(Icons.height),
),
CircleAvatar(
child: Icon(Icons.title),
),
//All widgets that should appear ontap of FAB.
],
type: CustomFloatingActionButtonType.horizontal,
openFloatingActionButton: const Icon(Icons.add),
closeFloatingActionButton: const Icon(Icons.close),
);
}
I cannot solve two issues with my reusable appbar.
Appbar has not the same width of the page.
Appbar shorter then page width
Text and Icons seems not centered vertically. It looks like the appbar had a border! (if i Move alignment I can seed the border. See picture 2.
see white icon on the right
When I cange page, It seems that an Appbar Is under The reusable Appbar. See picture 3.
Appbar under reusable Appbar
In every page I use this code to call the Appbar:
Widget build(BuildContext context) {
return Scaffold(
//backgroundColor: Colors.white,
appBar: AppBar(
title: ReusableBar(),
),
This is the code of the reusable AppBar:
class ReusableBar extends StatelessWidget implements PreferredSizeWidget{
#override
Widget build(BuildContext context) {
//number = number + displayedText;
return AppBar(
//elevation: 0.0,
centerTitle: true,
automaticallyImplyLeading: false,
titleSpacing: 0.0,
title: Text(getTranslated(context, 'total_click:') + "$_appbarcounter"),
actions: <Widget>[
IconButton(
alignment: Alignment(0.0, -4.0),
icon: Icon(
Icons.save,
color: Colors.white,
),
onPressed: () {
// do something
//TODO AGGIUNGERE FUNZIONE AL PULSANTE SAVE CON PAGINA DI SALVATAGGIO
},
)
],
// leading: GestureDetector(
// onTap: () { /* Write listener code here */ },
// child: Icon(
// Icons.menu, // add custom icons also
// ),
// ),
);
}
If you put your ReusableBar in the title property of AppBar it is wrapping an appbar inside another one. Like you mentionned in your comment you should implement your custom appbar like this:
#override
Widget build(BuildContext context) {
return Scaffold(
appBar: ReusableBar(),
);
}
Doing like this you only declare one appbar, which should solve your issue.
How to create vertical tab navigation for dashboard in flutter web and whats it the best way?
You can you a NavigationRail to get this look. It was added to flutter this year. It works almost like the bottom tab bar.
I believe you want something similiar to what is shown in the screenshot right?
If so, I would recommend you to use the Scaffold Widget and making use of the attributes appBar and drawer.
For further information about the Scaffold Widget please check this link.
Here a simple example:
In your main Widget modify the build function like this.
#override
Widget build(BuildContext context) {
GlobalKey<ScaffoldState> key = GlobalKey();
return Scaffold(
key: key,
drawer: Padding(
padding: const EdgeInsets.fromLTRB(0, 70, 0, 0),
child: Container(
color: Colors.red,
width: 300,
child: Column(children: [Text("1"), Text("2"), Text("3")])),
),
appBar: AppBar(
toolbarHeight: 70,
elevation: 5,
centerTitle: true,
backgroundColor: Colors.black,
leading: RawMaterialButton(
child: Icon(Icons.menu),
onPressed: () => key.currentState.openDrawer(),
),
title: Container(child: Text("Title Widget")),
),
body: Container(
child: Text("Main Widget"),
));
}
The result would look like this:
I'm trying to change the color of the system status bar to black.
The configuration seems to be overridden by the AppBar class. I can achieve what I want by assigning the theme: to ThemeData.dark() when creating the Material App, and then specifying an appBar attribute. But I don't want an AppBar, and also, doing it this way changes all the font colors.
A possible solution is to inherit ThemeData.bright() into a new class, then add something that only changes the system status bar through
setSystemUIOverlayStyle
And then I would need to specify AppBar and make it invisible somehow?
Documentation
main.dart
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:english_words/english_words.dart';
import 'layout_widgets.dart' as layout_widgets;
class RandomWords extends StatefulWidget {
#override
createState() => new RandomWordsState();
}
class RandomWordsState extends State<RandomWords> {
final _suggestions = <WordPair>[];
final _saved = new Set<WordPair>();
final _biggerFont = const TextStyle(fontSize: 18.0);
void _pushSaved() {
Navigator.of(context).push(
new MaterialPageRoute(
builder: (context) {
final tiles = _saved.map((pair) {
return new ListTile(
title: new Text(pair.asPascalCase,style:_biggerFont)
);
}
);
final divided = ListTile.divideTiles(
context:context,
tiles: tiles,).toList();
return new Scaffold(
appBar: new AppBar(
title: new Text('Saved Suggestions'),
),
body: new ListView(children:divided),
);
}
)
);
}
Widget _buildSuggestions() {
return new ListView.builder(
padding: const EdgeInsets.all(16.0),
// The item builder callback is called once per suggested word pairing,
// and places each suggestion into a ListTile row.
// For even rows, the function adds a ListTile row for the word pairing.
// For odd rows, the function adds a Divider widget to visually
// separate the entries. Note that the divider may be difficult
// to see on smaller devices.
itemBuilder: (context, i) {
// Add a one-pixel-high divider widget before each row in theListView.
if (i.isOdd) return new Divider();
// The syntax "i ~/ 2" divides i by 2 and returns an integer result.
// For example: 1, 2, 3, 4, 5 becomes 0, 1, 1, 2, 2.
// This calculates the actual number of word pairings in the ListView,
// minus the divider widgets.
final index = i ~/ 2;
// If you've reached the end of the available word pairings...
if (index >= _suggestions.length) {
// ...then generate 10 more and add them to the suggestions list.
_suggestions.addAll(generateWordPairs().take(10));
}
return _buildRow(_suggestions[index]);
}
);
}
Widget _buildRow(WordPair pair) {
final alreadySaved = _saved.contains(pair);
return new ListTile(
title: new Text(
pair.asPascalCase,
style: _biggerFont,
),
trailing: new Icon(
alreadySaved ? Icons.favorite : Icons.favorite_border,
color: alreadySaved ? Colors.red : null,
),
onTap: () {
setState(() {
if (alreadySaved) {
_saved.remove(pair);
} else {
_saved.add(pair);
}
});
},
);
}
#override
Widget build(BuildContext context) {
return new Scaffold(
appBar: new AppBar(
title: new Text('Startup Name Generator'),
actions: <Widget>[
new IconButton(icon:new Icon(Icons.list), onPressed: _pushSaved),
],
),
body: _buildSuggestions(),
);
}
}
void main() => runApp(new MyApp());
class MyApp extends StatelessWidget {
#override
Widget build(BuildContext context) {
Column buildButtonColumn(IconData icon, String label) {
Color color = Theme.of(context).primaryColor;
return new Column(
mainAxisSize: MainAxisSize.min,
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
new Icon(icon, color: color),
new Container(
margin: const EdgeInsets.only(top:8.0),
child: new Text(
label,
style: new TextStyle(
fontSize: 12.0,
fontWeight: FontWeight.w400,
color: color,
)
),
)
],
);
}
Widget titleSection = layout_widgets.titleSection;
Widget buttonSection = new Container(
child: new Row(
mainAxisAlignment: MainAxisAlignment.spaceEvenly,
children: <Widget>[
buildButtonColumn(Icons.contact_mail, "CONTACT"),
buildButtonColumn(Icons.folder_special, "PORTFOLIO"),
buildButtonColumn(Icons.picture_as_pdf, "BROCHURE"),
buildButtonColumn(Icons.share, "SHARE"),
],
)
);
Widget textSection = new Container(
padding: const EdgeInsets.all(32.0),
child: new Text(
'''
The most awesome apps done here.
''',
softWrap: true,
),
);
SystemChrome.setSystemUIOverlayStyle(SystemUiOverlayStyle.dark);
return new MaterialApp(
title: 'Startup Name Generator',
// theme: new ThemeData(
// brightness: Brightness.dark,
// primarySwatch: Colors.blue,
// ),
// theme: new ThemeData(),
debugShowCheckedModeBanner: false,
home: new Scaffold(
// appBar: new AppBar(
//// title: new Text('Top Lakes'),
//// brightness: Brightness.light,
// ),
// backgroundColor: Colors.white,
body: new ListView(
children: [
new Padding(
padding: new EdgeInsets.fromLTRB(0.0, 40.0, 0.0, 0.0),
child: new Image.asset(
'images/lacoder-logo.png',
width: 600.0,
height: 240.0,
fit: BoxFit.fitHeight,
),
),
titleSection,
buttonSection,
textSection,
],
),
),
);
}
}
layout_widgets.dart
import 'package:flutter/material.dart';
Widget titleSection = new Container(
padding: const EdgeInsets.all(32.0),
child: new Row(children: [
new Expanded(
child: new Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
new Container(
padding: const EdgeInsets.only(bottom: 8.0),
child: new Text(
"Some-Website.com",
style: new TextStyle(
fontWeight: FontWeight.bold,
),
)
),
new Text(
'Small details',
style: new TextStyle(
color: Colors.grey[500],
)
)
],
)),
new Icon(Icons.star,color: Colors.orange[700]),
new Text('100'),
]));
I tried the method SystemChrome.setSystemUIOverlayStyle(), as far as I tested (Flutter SDK v1.9.1+hotfix.2, running on iOS 12.1) it works perfect for Android. But for iOS, e.g. if your first screen FirstScreen() doesn't have an AppBar, but the second SecondScreen() does, then at launch the method does set the color in FirstScreen(). However, after navigating back to FirstScreen() from SecondScreen(), the status bar color becomes transparent.
I come up with a hacky workaround by setting an AppBar() with zero height, then status bar's color gets changed by the AppBar, but the AppBar itself is not visible. Hope it would be useful to someone.
// FirstScreen that doesn't need an AppBar
#override
Widget build(BuildContext context) {
return Scaffold(
appBar: PreferredSize(
preferredSize: Size.fromHeight(0),
child: AppBar( // Here we create one to set status bar color
backgroundColor: Colors.black, // Set any color of status bar you want; or it defaults to your theme's primary color
)
)
);
}
// SecondScreen that does have an AppBar
#override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar()
}
}
Here is the screenshot of FirstScreen in iPhone Xs Max iOS 12.1:
UPDATE:
Scaffold(
appBar: AppBar(
systemOverlayStyle: SystemUiOverlayStyle(
systemNavigationBarColor: Colors.blue, // Navigation bar
statusBarColor: Colors.pink, // Status bar
),
),
)
Old solution (still works)
Both iOS and Android:
appBar: AppBar(
backgroundColor: Colors.red, // status bar and navigation bar color
brightness: Brightness.light, // status bar brightness
)
Only for Android (More flexibility)
You can use SystemChrome class to change Status bar and Navigation bar color.
First import
import 'package:flutter/services.dart';
After this, you need to add following lines (better place to put these lines is in your main() method)
void main() {
SystemChrome.setSystemUIOverlayStyle(SystemUiOverlayStyle(
systemNavigationBarColor: Colors.blue,
statusBarColor: Colors.pink,
));
}
If you don't want AppBar at all, then you can just call setSystemUIOverlayStyle in the main function:
void main() async {
SystemChrome.setSystemUIOverlayStyle(SystemUiOverlayStyle.light);
runApp(new MaterialApp(
home: new Scaffold(),
));
}
It's more tricky if you have an app bar in one scaffold, and none in another. In that case I had to call setSystemUIOverlayStyle after pushing new route with a scaffold that does not have an appbar:
#override
Widget build(BuildContext context) {
final page = ModalRoute.of(context);
page.didPush().then((x) {
SystemChrome.setSystemUIOverlayStyle(SystemUiOverlayStyle.light);
});
return new Scaffold();
}
TLDR; you need to use Scaffold, it manages the colors even if you navigate back and forth.
Scaffold(
appBar: AppBar(brightness: Brightness.dark), \\ dark content -> white app bar
body: ...
);
If your screen does not have an app bar, then you need to use AnnotatedRegion with scaffold in order to achieve the same effect.
AnnotatedRegion(
value: SystemUiOverlayStyle.light, // this will make the app bar white
child: Scaffold(
body:
),
);
Instead of SystemUiOverlayStyle.light, you can customize it:
SystemUiOverlayStyle(
statusBarBrightness: Brightness.light,
systemNavigationBarDividerColor: Colors.blue,
...
);
I'm quite new to StackOverflow & I've never used Flutter however I have found this package that seems to make things relatively easy.
Method 1: Using the package
Once this is imported all you need to do is add this code fragment:
try {
await FlutterStatusbarcolor.setStatusBarColor(Colors.black);
} on PlatformException catch (e) {
print(e);
}
Replacing the parameter for the setStatusBarColor() should give you the desired result, a full list of colours can be found here.
Method 2: Using default functions
If this doesn't work / you don't want to add extra packages or libraries then perhaps this StackOverflow answer may help.
It involves using a similar function to the above method: getWindow().setStatusBarColor() or getActivity().getWindow().setStatusBarColor()
Replacing the parameter with the desired hex code from the same list as earlier may also result in a solution.
Hope it works/helps!
i have achieved that way
#override
void initState() {
super.initState();
// Transparent status bar
SystemChrome.setSystemUIOverlayStyle(SystemUiOverlayStyle(statusBarColor: Colors.transparent,));
}
you can also see different properties after comma
SystemUiOverlayStyle(statusBarColor: Colors.transparent,)
just use combination of ctrl + space after comma and you will get what you can use.
Please read this flutter package. To set status bar text as black, you can set FlutterStatusbarcolor.setStatusBarWhiteForeground(false). you need to have this line of code in didChangeAppLifecycleState method with resume state so that when you go to other application and come back, the status bar text color are set to your initial setup.
Also, you need to set the your AppBar's TextTheme. like following.
Widget build(BuildContext context) {
FlutterStatusbarcolor.setStatusBarWhiteForeground(false);
return MaterialApp(
title:// title goes here
theme:// your theme goes here
home: Scaffold(
appBar: AppBar(
backgroundColor: Colors.white,
title: _loadAppBarTitle(),
textTheme: Theme.of(context).textTheme),
body: //body's goes here
);
);
Hopefully, this one can help somebody who has the similar problem with me.
Flutter 2.5.1
'brightness' is deprecated and shouldn't be used. This property is no longer used, please use systemOverlayStyle instead. This feature was deprecated after v2.4.0-0.0.pre.. Try replacing the use of the deprecated member with the replacement.
Old code
brightness: Brightness.dark,
New code
systemOverlayStyle: SystemUiOverlayStyle(
systemNavigationBarColor: Colors.blue, // Navigation bar
statusBarColor: Colors.red, // Status bar
),
Just write this code inside the AppBar
Scaffold(
drawer: const SideBar(),
appBar: AppBar(
title: const Text("SomeThing"),
systemOverlayStyle: SystemUiOverlayStyle.dark,//this is what you wanted
),
body: YourWidget()
For some reason, it didn't work for me when I put my AppBar directly in my Scaffold, so I added it like this :
Scaffold(
extendBodyBehindAppBar: true,
body: Stack (
children: [
AppBar(
automaticallyImplyLeading: false,
backgroundColor: Colors.transparent,
systemOverlayStyle: SystemUiOverlayStyle.light,
),
// ... other widgets
],
),
)
And it changed the color of both my status bar and navigation bar (background of home indicator in Android)