I'm using an advanced page turn widget to show the flipping the effect between pages and it's working perfectly fine on an emulator but when I run the application on the real device, the body content is not appearing up at all (just showing a grey screen)
the page turn widget is wrapped inside the body, so I guess it has to do something with the widget
Note:- The body content is appearing up on an emulator
Package link https://pub.dev/packages/advanced_page_turn
Here is my code
class Lyrics extends StatefulWidget {
#override
_LyricsState createState() => _LyricsState();
}
class _LyricsState extends State<Lyrics> {
final _controller = GlobalKey<AdvancedPageTurnState>();
#override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('App Title', style: TextStyle(color: Colors.white, fontWeight: FontWeight.bold, fontFamily: 'oswald'),),
centerTitle: true,
flexibleSpace: Image(
image: AssetImage('images/bg.jpg'),
fit: BoxFit.cover,
),
),
backgroundColor: Colors.grey[200],
body: SafeArea(child: AdvancedPageTurn( // The body content is not appearing up at all but working fine on emulator
key: _controller,
initialIndex: 0,
children: [
Container(
decoration: BoxDecoration(
image: DecorationImage(image: AssetImage('images/bg.jpg'), fit: BoxFit.cover),
),
padding: EdgeInsets.all(25.0),
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Text('Title 1', style: TextStyle(fontSize: 28.0, height: 1.8, fontWeight: FontWeight.bold, color: Colors.white, fontFamily: 'oswald'), textAlign: TextAlign.center,),
],
),
),
Container(
decoration: BoxDecoration(
image: DecorationImage(image: AssetImage('images/bg.jpg'), fit: BoxFit.cover),
),
padding: EdgeInsets.all(25.0),
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Text('Title 2', style: TextStyle(fontSize: 28.0, height: 1.8, fontWeight: FontWeight.bold, color: Colors.white, fontFamily: 'oswald'), textAlign: TextAlign.center,),
],
),
),
],
),
),
);
}
}
Related
I'm using AdvancedPageTurn widget from advanced_page_turn package. I wrapped this widget inside the Scaffold body property. The widget is appearing on the simulator perfectly, but when I launch the application on the real device, that particular AdvancedPageTurn widget is not appearing up at all.
What could be the problem?
class Lyrics extends StatefulWidget {
#override
_LyricsState createState() => _LyricsState();
}
class _LyricsState extends State<Lyrics> {
final _controller = GlobalKey<AdvancedPageTurnState>();
#override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('App Title', style: TextStyle(color: Colors.white, fontWeight: FontWeight.bold, fontFamily: 'oswald'),),
centerTitle: true,
flexibleSpace: Image(
image: AssetImage('images/bg.jpg'),
fit: BoxFit.cover,
),
),
body: SafeArea(child: AdvancedPageTurn( // The Widget content is not appearing up at all but working fine on emulator
key: _controller,
initialIndex: 0,
children: [
Container(
decoration: BoxDecoration(
image: DecorationImage(image: AssetImage('images/bg.jpg'), fit: BoxFit.cover),
),
padding: EdgeInsets.all(25.0),
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Text('Title 1', style: TextStyle(fontSize: 28.0, height: 1.8, fontWeight: FontWeight.bold, color: Colors.white, fontFamily: 'oswald'), textAlign: TextAlign.center,),
],
),
),
Container(
decoration: BoxDecoration(
image: DecorationImage(image: AssetImage('images/bg.jpg'), fit: BoxFit.cover),
),
padding: EdgeInsets.all(25.0),
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Text('Title 2', style: TextStyle(fontSize: 28.0, height: 1.8, fontWeight: FontWeight.bold, color: Colors.white, fontFamily: 'oswald'), textAlign: TextAlign.center,),
],
),
),
],
),
),
);
}
}
Please any expert who can suggest to me how to a background picture in this dashboard, I'll be very thankful.
When I add boxfit in the following scaffold widget the code got red lines.
Please any expert who can suggest to me how to a background picture in this dashboard, I'll be very thankful.
When I add boxfit in the following scaffold widget the code got red lines.
import 'package:google_fonts/google_fonts.dart';
import 'package:maps_app/screens/Dash_board.dart';
class Dashboard extends StatefulWidget {
static const routeName = '/home1';
#override
DashboardState createState() => new DashboardState();
}
class DashboardState extends State<Dashboard> {
#override
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: Color(0xffffffff),
body: Column(
children: <Widget>[
SizedBox(
height: 110,
),
Padding(
padding: EdgeInsets.only(left: 16, right: 16),
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: <Widget>[
Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: <Widget>[
Text(
"ColorLine",
style: GoogleFonts.openSans(
textStyle: TextStyle(
color: Colors.black87,
fontSize: 24,
fontWeight: FontWeight.bold)),
),
SizedBox(
height: 4,
),
Text(
" Home",
style: GoogleFonts.openSans(
textStyle: TextStyle(
color: Color(0xff000000),
fontSize: 14,
fontWeight: FontWeight.w600)),
),
],
),
IconButton(
iconSize: 70,
alignment: Alignment.center,
icon: Image.asset(
"assets/colorline.png",
width: 100,
height: 100,
),
onPressed: () {},
)
],
),
),
SizedBox(
height: 40,
),
GridDashboard()
],
),
);
}
}
Scaffold(
body: Container(
decoration: BoxDecoration(
image: DecorationImage(
image: AssetImage("assets/background.jpeg"),
fit: BoxFit.cover,
),
),
child: ...
),
);
What you want to do is wrap your Scaffold with a Container Widget. Also, you need to make the Scaffold's color transparent. I will be using a bit of Vlad Konoshenko's answer to help you with this.
return Container(
decoration: BoxDecoration(
image: DecorationImage(
image: AssetImage("assets/background.jpeg"),
fit: BoxFit.cover,
),
),
child: Scaffold(
backgroundColor: Colors.transparent,
// Rest of the code remains same.
...
),
);
I would like to know, how to center Text horizontally in Flutter I tried it with an Align Widget before and it did not work. Now, I have tried it with the textAlign property and it still does not work.
Here is the Code for the full Container:
```
Container(
height: 150.0,
padding: EdgeInsets.all(10),
margin: EdgeInsets.all(10),
decoration: BoxDecoration(
borderRadius: BorderRadius.all(Radius.circular(20)),
color: Colors.white10,
),
child: Column(
children: [
Row(
children: [
Text(
'Coursename',
textAlign: TextAlign.center,
style: TextStyle(
fontSize: 20.0,
fontWeight: FontWeight.bold,
color: Colors.white,
),
),
],
),
Row(
children: [
Container(
padding: EdgeInsets.only(top: 10),
child: Text(
'Latest post or assignment by the teacher.',
style: TextStyle(fontSize: 12.0, color: Colors.white),
),
),
],
),
],
),
),
```
Below, there is a screenshot, of how the App looks right now.
The easiest way to do this would be to use
Align(
alignment: Alignment.center, // Align however you like (i.e .centerRight, centerLeft)
child: Text("This is what I wanted to center"),
),
EDIT:
This even centers vertically
child: Center(
child: Text(
"this is what I center",
textAlign: TextAlign.center,
),
),
You can use a Center and add your element as Center's child.
I managed to reach what you need with a mixed solution of Center() and textAlign. They behave differently according to their parents.
However here's a centered text version of your code.
Container(
height: 150.0,
padding: EdgeInsets.all(10),
margin: EdgeInsets.all(10),
decoration: BoxDecoration(
borderRadius: BorderRadius.all(Radius.circular(20)),
color: Colors.blue,
),
child: Center(
child:Column(
children: [
Center(
child: Text(
'Coursename',
textAlign: TextAlign.center,
style: TextStyle(
fontSize: 20.0,
fontWeight: FontWeight.bold,
color: Colors.black,
),
),
), //Center
Container(
padding: EdgeInsets.only(top: 10),
child: Center(
child: Column(
children: [
Center(
child:Text(
'Latest post or assignment by the teacher.',
textAlign: TextAlign.center,
style: TextStyle(fontSize: 12.0, color: Colors.black),
),
), //Center
],
),
), //Center
),
],
),
), //Center
),
You can copy paste run full code below
You can in Row use mainAxisAlignment: MainAxisAlignment.center
code snippet
Row(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Text(
'Coursename',
working demo
full code
import 'package:flutter/material.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
#override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
visualDensity: VisualDensity.adaptivePlatformDensity,
),
home: MyHomePage(title: 'Flutter Demo Home Page'),
);
}
}
class MyHomePage extends StatefulWidget {
MyHomePage({Key key, this.title}) : super(key: key);
final String title;
#override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
#override
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: Colors.black,
appBar: AppBar(
title: Text(widget.title),
),
body: Container(
height: 150.0,
padding: EdgeInsets.all(10),
margin: EdgeInsets.all(10),
decoration: BoxDecoration(
borderRadius: BorderRadius.all(Radius.circular(20)),
color: Colors.white10,
),
child: Column(
children: [
Row(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Text(
'Coursename',
textAlign: TextAlign.center,
style: TextStyle(
fontSize: 20.0,
fontWeight: FontWeight.bold,
color: Colors.white,
),
),
],
),
Row(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Container(
padding: EdgeInsets.only(top: 10),
child: Text(
'Latest post or assignment by the teacher.',
style: TextStyle(fontSize: 12.0, color: Colors.white),
),
),
],
),
],
),
),
);
}
}
I don't want to center the image and text, but I want to set a specific coordinate for it. I can't seem to get the alignment command to work.
Currently my logo image and text is posited as following:
I want the logo image and text to be towards the center but a little bit upwards on the y axis, not entirely centered vertically.
This is my main.dart code:
import 'package:flutter/material.dart';
import 'login_page.dart';
void main() => runApp(new MyApp());
class MyApp extends StatelessWidget {
#override
Widget build(BuildContext context) {
return new MaterialApp(
home: new LoginPage(),
theme: new ThemeData(
primarySwatch: Colors.green
)
);
}
}
This is my login_page.dart code:
import 'package:flutter/material.dart';
class LoginPage extends StatefulWidget{
#override
State createState() => new LoginPageState();
}
class LoginPageState extends State<LoginPage>{
#override
Widget build(BuildContext context){
return new Scaffold(
appBar: AppBar(
title: new Text("SMART ID", textAlign: TextAlign.center, style: TextStyle(fontFamily: 'Open Sans', fontWeight: FontWeight.bold)),
leading: Padding(
padding: const EdgeInsets.all(8.0),
child: Image.asset(
"assets/arrowPNG.png",
scale: 8.0,
)
)
),
backgroundColor: Colors.transparent,
body: Container(
child: Column(
children: <Widget>[
Image.asset('assets/arrowPNG.png', scale: 2.5),
SizedBox(height: 20,),
Text("SMARTID", style: TextStyle(
fontSize: 30, color: Colors.black, fontFamily: 'Open Sans', fontWeight: FontWeight.bold,
))
],
),
width: MediaQuery.of(context).size.width,
height: MediaQuery.of(context).size.height,
decoration: BoxDecoration(
image: DecorationImage(
image: AssetImage('assets/background.png'),
fit: BoxFit.cover,
)
)
)
);
}
}
Thanks in advance!
You can move background image and logo inside a Stack and then use Positioned for placing logo from the vertical position.
class LoginState extends State<Login> {
#override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text("SMARTID", textAlign: TextAlign.center,
style: TextStyle(
fontFamily: 'Open Sans', fontWeight: FontWeight.bold)),
leading: Padding(
padding: const EdgeInsets.all(8.0),
child: Image.asset(
"assets/images/appicon.png",
scale: 8.0,
)
)
),
backgroundColor: Colors.transparent,
body: Stack(
children: <Widget>[
Container(
alignment: Alignment(0, -0.5),
width: MediaQuery
.of(context)
.size
.width,
height: MediaQuery
.of(context)
.size
.height,
decoration: BoxDecoration(
image: DecorationImage(
image: AssetImage('assets/images/background.jpg'),
fit: BoxFit.cover,
)
)
),
Positioned(
width: MediaQuery.of(context).size.width,
top: MediaQuery.of(context).size.width * 0.30,//TRY TO CHANGE THIS **0.30** value to achieve your goal
child: Container(
margin: EdgeInsets.all(16.0),
child:Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Image.asset('assets/images/appicon.png', scale: 2.5),
SizedBox(height: 20,),
Text("SMARTID", style: TextStyle(
fontSize: 30, color: Colors.white,fontFamily: 'Open Sans',
fontWeight: FontWeight.bold))
]
),
))
],
)
);
}
}
Output
If I understand, I'll try to help you:
First of all, you can Align your Itens in the Center of the Column:
Container(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Image.asset('assets/arrowPNG.png', scale: 2.5),
SizedBox(height: 20,),
Text("SMARTID", style: TextStyle(
fontSize: 30, color: Colors.black, fontFamily: 'Open Sans', fontWeight: FontWeight.bold,
))
],
),
width: MediaQuery.of(context).size.width,
height: MediaQuery.of(context).size.height,
decoration: BoxDecoration(
image: DecorationImage(
image: AssetImage('assets/background.png'),
fit: BoxFit.cover,
)
)
)
);
After this, you can using Padding or Margin in your container to push up the logo. You can try what distance is better for you. And here's your code:
Container(
padding: EdgeInsets.only(bottom: 25.0),
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Image.asset('assets/arrowPNG.png', scale: 2.5),
SizedBox(height: 20,),
Text("SMARTID", style: TextStyle(
fontSize: 30, color: Colors.black, fontFamily: 'Open Sans', fontWeight: FontWeight.bold,
))
],
),
width: MediaQuery.of(context).size.width,
height: MediaQuery.of(context).size.height,
decoration: BoxDecoration(
image: DecorationImage(
image: AssetImage('assets/background.png'),
fit: BoxFit.cover,
)
)
)
);
I hope it works.
This is full code:
class Application extends StatelessWidget {
#override
Widget build(BuildContext context) {
return new MaterialApp(
home: new Scaffold(
body: new Container(
color: Color(0xff258DED),
height: 400.0,
alignment: Alignment.center,
child: new Container(
height: 200.0,
width: 200.0,
decoration: new BoxDecoration(
image: DecorationImage(
image: new AssetImage('assets/logo.png'),
fit: BoxFit.fill
),
shape: BoxShape.circle
),
),
child: new Container(
child: new Text('Welcome to Prime Message',
textAlign: TextAlign.center,
style: TextStyle(
fontFamily: 'Aleo',
fontStyle: FontStyle.normal,
fontWeight: FontWeight.bold,
fontSize: 25.0,
color: Colors.white
),
),
),
),
),
);
}
}
I tried to add a Container on top and then added two children inside it. First child works fine, but second child giving me error like "the argument for the named parameter 'child' was already specified".
If you try to put more than one child in a container, you want to look as Row() or Column() class for linear ones. Stack() is used if you want to have floating children on top of each other.
Eg:
class Application extends StatelessWidget {
#override
Widget build(BuildContext context) {
return new MaterialApp(
home: new Scaffold(
body: new Container(
color: Color(0xff258DED),
height: 400.0,
alignment: Alignment.center,
child: new Column(
children: [
new Container(
height: 200.0,
width: 200.0,
decoration: new BoxDecoration(
image: DecorationImage(
image: new AssetImage('assets/logo.png'),
fit: BoxFit.fill
),
shape: BoxShape.circle
),
),
new Container(
child: new Text('Welcome to Prime Message',
textAlign: TextAlign.center,
style: TextStyle(
fontFamily: 'Aleo',
fontStyle: FontStyle.normal,
fontWeight: FontWeight.bold,
fontSize: 25.0,
color: Colors.white
),
),
),
],
),
),
),
);
}
}
Container is a Single-child layout widget. But it can have multiple children by using a Multi-child layout widget as its child.
In the container can be only child.
You have to use Column widget and add Container widgets as children if you want them position vertically.
#override
Widget build(BuildContext context) {
return new MaterialApp(
home: new Scaffold(
body: new Container(
color: Color(0xff258DED),
height: 400.0,
alignment: Alignment.center,
child: Column(
children: <Widget>[
Container(
height: 200.0,
width: 200.0,
decoration: new BoxDecoration(
image: DecorationImage(
image: new AssetImage('assets/logo.png'),
fit: BoxFit.fill
),
shape: BoxShape.circle
),
),
Container(
child:Text('Welcome to Prime Message',
textAlign: TextAlign.center,
style: TextStyle(
fontFamily: 'Aleo',
fontStyle: FontStyle.normal,
fontWeight: FontWeight.bold,
fontSize: 25.0,
color: Colors.white
),
),
),
],
),
),
),
);
}
tip #1 You don't have to use 'new' word to create object.
tip #2 Read about Column, Row and Stack on flutter.dev
Please check below code:-
#override
Widget build(BuildContext mContext) {
return MaterialApp(
home: Scaffold(
body: Container(
color: Color(0xff258DED),
height: 400.0,
alignment: Alignment.center,
child: Column(
crossAxisAlignment: CrossAxisAlignment.center,
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Container(
height: 200.0,
width: 200.0,
decoration: BoxDecoration(
image: DecorationImage(
image: AssetImage('assets/logo.png'),
fit: BoxFit.fill
),
shape: BoxShape.circle
),
),
Container(
child: Text('Welcome to Prime Message',
textAlign: TextAlign.center,
style: TextStyle(
fontFamily: 'Aleo',
fontStyle: FontStyle.normal,
fontWeight: FontWeight.bold,
fontSize: 25.0,
color: Colors.white
),
),
),
],
),
),
),
);
}