i want add two line of different type text in my homepage. But when i add another Text widget nothing happen. Here is my code;
class Body extends StatelessWidget {
#override
Widget build(BuildContext context) {
return Column(
children: <Widget>[
Center(
child: Text(
"Hello",
style: TextStyle(fontSize: 28, color: Colors.white),
),
),
],
);
}
}
i want to get this output in picture exactly.
Thanks a lot!
see input
You need to use container to give blue background and then use Column and Text widget. You are using Text color as white with background color also white, how will that show...
class Body extends StatelessWidget {
#override
Widget build(BuildContext context) {
return Container(
color: Colors.blue,
child: Column(
children: <Widget>[
Center(
child: Text(
"Hello",
style: TextStyle(fontSize: 28, color: Colors.white),
),
),
Center(
child: Text(
"Izabella",
style: TextStyle(fontSize: 38, color: Colors.white),
),
),
],
),
);
}
}
this is like your Image ...
class Body extends StatelessWidget {
#override
Widget build(BuildContext context) {
return Column(
children: <Widget>[
Center(
child: Text(
"Hello",
style: TextStyle(fontSize: 14, color: Colors.white),
),
),
Center(
child: Text(
"Izabella",
style: TextStyle(fontSize: 38, color: Colors.white),
),
),
],
);
}
}
I hope this help you...
I hope this answers your question
class Body extends StatelessWidget {
#override
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: Colors.blue,
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
// first text
Text('Hello', style: TextStyle(fontSize: 15, color: Colors.white)),
// second text
Text('Izabella',
style: TextStyle(fontSize: 25, color: Colors.white)),
],
),
),
);
}
}
Related
I am new to flutter development and i am doing it from past 3 months and i never have that issue when i press back.
Whenever i press back and back to home screen screen overlap:
here is my code of home screen:
class HomePage extends StatefulWidget {
#override
State<HomePage> createState() => _HomePageState();
}
class _HomePageState extends State<HomePage> {
BannerAd _bottomBannerAd;
bool _isBottomBannerAdLoaded = false;
final BannerAd myBanner = BannerAd(
adUnitId: 'ca-app-pub-3940256099942544/6300978111',
size: AdSize.banner,
request: AdRequest(),
listener: BannerAdListener(),
);
#override
void initState() {
super.initState();
myBanner.load();
}
#override
Widget build(BuildContext context) {
return Container(
child: Scaffold(
bottomNavigationBar: Container(
height: 50,
width: 320,
child: AdWidget(ad: myBanner,),
) ,
backgroundColor: Colors.transparent,
body: SingleChildScrollView(
child: Column(
children: <Widget>[NavBar(), Body()],
)),
));
}
}
class Body extends StatelessWidget {
#override
Widget build(BuildContext context) {
return ResponsiveLayout(
largeScreen: LargeChild(),
smallScreen: SmallChild(),
);
}
}
class LargeChild extends StatelessWidget {
#override
Widget build(BuildContext context) {
return SizedBox(
height: 600,
child: Stack(
fit: StackFit.expand,
children: <Widget>[
FractionallySizedBox(
alignment: Alignment.centerLeft,
widthFactor: .6,
child: Padding(
padding: EdgeInsets.only(left: 48),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Text(
"Memory Game",
style: TextStyle(
fontSize: 60,
fontWeight: FontWeight.bold,
fontFamily: "Montserrat-Regular",
color: Color(0xFF111111)),
),
RichText(
text: TextSpan(
text: "Say Hi to ",
style: TextStyle(
fontSize: 60, color: Color(0xFF8591B0)),
children: [
TextSpan(
text: "🐱",
style: TextStyle(
fontSize: 60,
fontWeight: FontWeight.bold,
// color: Colors.black54
))
],
),
),
SizedBox(
height: 40,
),
Search()
])))
],
),
);
}
}
class SmallChild extends StatelessWidget {
#override
Widget build(BuildContext context) {
return SingleChildScrollView(
child: Padding(
padding: EdgeInsets.all(40),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: <Widget>[
Text(
"Memory Game!",
style: TextStyle(
fontSize: 60,
fontWeight: FontWeight.bold,
fontFamily: "Montserrat-Regular",
color: Colors.white),
),
RichText(
text: TextSpan(
text: "Play Now",
style: TextStyle(fontSize: 60, color: Color(0xFF8591B0)),
children: [
TextSpan(
text: "🐱",
style: TextStyle(
fontSize: 40,
fontWeight: FontWeight.bold,
))
],
),
),
SizedBox(
height: 32,
),
Search(),
SizedBox(
height: 30,
)
],
),
));
}
}
Problem:Whenever i press back whole screen apears in back of home screen as you can see in the provided gif.
Can someone please tell me that why is this happening?
Its happening just because you have written backgroundColor: Colors.transparent, in your Scaffold
Try to change it with some another color and check it out, you will not face the problem.
I am trying to make an icon and text in a container side by side by using a row and a column but I haven't been able to get results I want. On the first picture it's my code and on the second it's what I want to achieve. Any help would be app. Also, how do I implement a divider with a different color? Cheers
You are using TextField in your ReusableCard right?
Sure thing you can make it with Row but in this case this is usually done with suffixIcon property:
TextField(
decoration: InputDecoration(
suffixIcon: Icon(Icons.search),
),
Or you can just wrap children widgets that has to be in a row in a, well Row widget. Here is example:
import 'package:flutter/material.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
TextStyle _style = TextStyle(color: Colors.yellow[800], fontSize: 30);
Color _color = Colors.yellow[800];
#override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Material App',
home: Scaffold(
backgroundColor: Colors.blue[800],
appBar: AppBar(
title: Text('Material App Bar'),
),
body: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Row(
children: [
Icon(Icons.done, color: _color),
SizedBox(width: 15),
Text('Electricity', style: _style),
Spacer(),
Icon(Icons.done, color: _color),
SizedBox(width: 15)
],
),
Divider(color: _color),
Row(
children: [
Icon(Icons.done, color: _color),
SizedBox(width: 15),
Text('Internet', style: _style),
Spacer(),
Icon(Icons.done, color: _color),
SizedBox(width: 15)
],
),
Divider(),
],
)),
);
}
}
Spacing / alignment of the icons will be tricky without using Stack, but it could be done with lots of fiddling around with padding/margin.
import 'package:flutter/material.dart';
final bool debug = false;
class RowColLayoutPage extends StatelessWidget {
#override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('Row Col Layout'),
),
body: Column(
children: [
Container(
color: debug ? Colors.lightGreenAccent : null,
child: Row(
crossAxisAlignment: CrossAxisAlignment.end,
children: [
Flexible(
flex: 1,
child: RowIcon(icon: Icons.lightbulb)
),
Expanded(
flex: 2,
child: RowText(text: 'Electricity')
)
],
),
),
RowDivider(),
Container(
color: debug ? Colors.lightGreenAccent : null,
child: Row(
crossAxisAlignment: CrossAxisAlignment.end,
children: [
Flexible(
flex: 1,
child: RowIcon(icon: Icons.microwave_rounded,)
),
Expanded(
flex: 2,
child: RowText(text: 'Internet')
)
],
),
),
RowDivider(),
],
),
);
}
}
class RowIcon extends StatelessWidget {
final IconData icon;
RowIcon({this.icon});
#override
Widget build(BuildContext context) {
return Container(
alignment: Alignment.centerLeft,
padding: EdgeInsets.only(left: 2),
decoration: BoxDecoration(
border: debug ? Border.all() : null
),
child: Icon(icon, size: 80,)
);
}
}
class RowText extends StatelessWidget {
final String text;
RowText({this.text});
#override
Widget build(BuildContext context) {
return Container(
decoration: BoxDecoration(
border: debug ? Border.all() : null
),
child: Text(text, style: TextStyle(fontSize: 40))
);
}
}
class RowDivider extends StatelessWidget {
#override
Widget build(BuildContext context) {
return Divider(thickness: 1, color: Colors.blue, indent: 15, endIndent: 15,);
}
}
I'm getting this error as I wrote on the title above. I'm a new learner in flutter, I have seeking for some solution to solve it, example this link below.
But I still cannot solve the problem can anyone help me on that?
I know this might be a duplicate question, I have try my best to understand it and still cannot solve, can anyone help out? Thanks. And
below is the main.dart code :
import 'package:flutter/material.dart';
import 'package:sharing_app/MyFlutterApp_icons.dart';
import 'package:sharing_app/Sharer.dart';
import 'package:sharing_app/Customer.dart';
void main() => runApp(MainPage());
class MainPage extends StatefulWidget{
Home createState()=> Home();
}
class Home extends State<MainPage> {
#override
Widget build(BuildContext context) {
Scaffold(
appBar: AppBar(
backgroundColor: Colors.amber,
centerTitle: true,
title: Text('Welcome',
style: TextStyle(
fontSize: 16.0,
color: Colors.black87,
letterSpacing: 1.0,
),
),
),
body: Column(
children: [
Row(
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.center,
children: <Widget>[
Expanded(
flex: 1,
child: Container(
padding: EdgeInsets.all(20.0),
child: RaisedButton.icon(
onPressed: () {
Navigator.of(context)
.push(MaterialPageRoute(
builder: (context) {
return Sharer();
}
)
);
},
icon: Icon(
Icons.account_circle,
),
label: Text(
'Login as Sharer',
style: TextStyle(
fontFamily: 'MyFlutterApp',
color: Colors.black87,
letterSpacing: 1.0,
),
),
),
),
),
],
),
Row(
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.center,
children: <Widget>[
Expanded(
flex: 1,
child: Container(
padding: EdgeInsets.all(20.0),
child: RaisedButton.icon(
onPressed: () {
Navigator.of(context)
.push(MaterialPageRoute(
builder: (context) {
return Customer();
}
)
);
},
icon: Icon(
Icons.account_circle,
),
label: Text(
'Login as Customer',
style: TextStyle(
fontFamily: 'MyFlutterApp',
color: Colors.black87,
letterSpacing: 1.0,
),
),
),
),
),
],
),
],
),
);
}
}
Error : it tells on the android studio console "A build function returned null.". Then, "To return an empty space that causes the building widget to fill available room, return "Container()". To return an empty space that takes as little room as possible, return "Container(width: 0.0, height: 0.0)"."
Can anyone help out?
Well you just forget the return statement before your Scafffold :
class Home extends State<MainPage> {
#override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
The build method expect a Widget (in you case the scaffold) to be return so it can draw / build this widget.
Container(
child: Column(
children: <Widget>[
Container(
alignment: Alignment.topLeft,
padding: EdgeInsets.only(left: 10.0),
child: Text("Random Text",
style: TextStyle(
fontWeight: FontWeight.bold,
color: Colors.black)),
),
Container(
alignment: Alignment.topLeft,
padding: EdgeInsets.all(10.0),
child: Text("Owner",
style: TextStyle(
fontWeight: FontWeight.bold,
color: Colors.grey)),
),
],
),
),
I don't know if it's an easy way. But for a simple reusable widget, you can place your widget inside a StatelessWidget or a StatefulWidget.
Here's the example:
import 'package:flutter/material.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
#override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
body: Column(
children: <Widget>[
MyReusableWidget('Nikola Tesla', 'Owner'), //Input the name and role variable when you call the widget
MyReusableWidget('Albert Einstein', 'Developer'),
MyReusableWidget('Isaac Newton', 'Technician'),
],
),
),
);
}
}
class MyReusableWidget extends StatelessWidget {
final String name; // provide a place for the input's data
final String role;
MyReusableWidget(this.name, this.role);
#override
Widget build(BuildContext context) {
return Container(
child: Column(
children: [
Container(
alignment: Alignment.topLeft,
padding: EdgeInsets.only(left: 10.0),
child: Text(
name, // This is where you place your 'name' data
style: TextStyle(
fontWeight: FontWeight.bold, color: Colors.black),
),
),
Container(
alignment: Alignment.topLeft,
padding: EdgeInsets.all(10.0),
child: Text(
role, // This is where you place your 'role' data
style: TextStyle(
fontWeight: FontWeight.bold, color: Colors.grey),
),
),
],
),
);
}
}
I'm creating a widget called MyReusableWidget. I am gonna call that widget inside my MyApp 3 times. And then each widget should provide different names and roles.
So inside my MyReusableWidget, I provide two String data-types called name and role to store my data when I call the widget.
final String name; // provide a place for the input's data
final String role;
MyReusableWidget(this.name, this.role);
And then I want to place my name and role variable inside a Text widget:
child: Text(
name, // This is where you place your 'name' data
style: TextStyle(
fontWeight: FontWeight.bold, color: Colors.black),
),
and:
child: Text(
role, // This is where you place your 'role' data
style: TextStyle(
fontWeight: FontWeight.bold, color: Colors.grey),
),
After that, inside my MyApp widget, I can call MyReusableWidget as much as I want and provide different name and role value on each widget.
Column(
children: <Widget>[
MyReusableWidget('Nikola Tesla', 'Owner'), //Input the name and role variable when you call the widget
MyReusableWidget('Albert Einstein', 'Developer'),
MyReusableWidget('Isaac Newton', 'Technician'),
],
),
Result:
And that's it.
You can store any kind of data-type on it (String, int, double, etc).
I hope it will be helpful.
I am building a Weather app for learning and at the beginning of app I want to get users location. Splash screen is stateless widget and don't do anything. When the locations is available I want to push to the another screen.
I am able to do it but is this a correct way to do(Please review below code)?.
Let me know any other solutions.
I call the getLocation method before returning the widget from build method. Is this the ideal way of doing? Because this screen state won't be updating.
class LaunchScreen extends StatelessWidget {
static const String id = 'launch_screen';
void getLocation(BuildContext context) async {
LocationData location = await LocationService().getCurrentLocation();
if (location != null) {
// Go to home
print(location.latitude);
print(location.longitude);
} else {
// Error fetching location
}
}
#override
Widget build(BuildContext context) {
getLocation(context);
return Scaffold(
body: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Expanded(
child: Container(),
),
Center(
child: Image(
image: AssetImage('images/launch_screen/app_logo.png'),
),
),
SizedBox(
height: 8,
),
Center(
child: Shimmer.fromColors(
baseColor: Colors.white.withOpacity(0.6),
highlightColor: Colors.white,
child: Text(
'Forecasts',
style: GoogleFonts.montserratAlternates(
textStyle:
TextStyle(fontSize: 60, fontWeight: FontWeight.w300),
color: Colors.white.withOpacity(0.6)),
),
),
),
Expanded(
child: Container(),
),
Row(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Text(
'Made with ❤️ ',
style: TextStyle(
fontSize: 12,
fontWeight: FontWeight.w300,
color: Colors.white.withOpacity(0.5)),
),
Text(
'Parth Adroja',
style: TextStyle(
fontSize: 12,
fontWeight: FontWeight.w500,
color: Colors.white.withOpacity(0.5)),
),
],
),
SizedBox(
height: 20,
)
],
),
);
}
}
You can use the FutureBuilder to do it.
like:
Widget build(BuildContext context) {
return FutureBuilder(
initialData: null,
future: getLocation(),
builder: (context, snap){
if(snap.hasData){
return FullDataWidget(snap.data);
}else{
return SplashScreen();
}
},
);
}