Flutter Web: How to fix SelectableText alignment? - flutter

I have a SelectableText and Icon inside a Row, but SelectableText does not seem to be properly aligned.
Right now it looks like this,
Expected Result:
This is code I am using,
Row(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
const Icon(FontAwesomeIcons.whatsapp),
const Padding(padding: EdgeInsets.only(left: 8)),
SelectableText(
'+91-8**2**8**5',
textAlign: TextAlign.center,
style: Theme.of(context).textTheme.title,
)
],
),
PS: It works well with Text but I want SelectableText instead.

Issue Selectabletext widget on web is cutted on half
https://github.com/flutter/flutter/issues/40663 has been solved.
please upgrade to latest version
attached my full test code and result
full test code
import 'package:flutter/material.dart';
import 'package:font_awesome_flutter/font_awesome_flutter.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
// This widget is the root of your application.
#override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
),
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> {
int _counter = 0;
void _incrementCounter() {
setState(() {
_counter++;
});
}
#override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(widget.title),
),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Row(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
const Icon(FontAwesomeIcons.whatsapp),
const Padding(padding: EdgeInsets.only(left: 8)),
SelectableText(
'+91-8**2**8**5',
textAlign: TextAlign.center,
style: Theme.of(context).textTheme.title,
)
],
),
Text(
'You have pushed the button this many times:',
),
Text(
'$_counter',
style: Theme.of(context).textTheme.display1,
),
],
),
),
floatingActionButton: FloatingActionButton(
onPressed: _incrementCounter,
tooltip: 'Increment',
child: Icon(Icons.add),
),
);
}
}

Related

FLUTTER: How to set auto font size in TextSpan

I want to implement that text with divider in between lines:
Smart City Text
Do you guys have any ideas how can I implement that in flutter? I tried few things but it is kind of a challenge for me, because I am beginner. Divider line have to be long as text above and under line.
You can make a screen using auto_size_text package.
Using AutoSizeText and AutoSizeText.rich widget in that package,
and set a maxLines option to 1 and set font size big.
Because we set maxLines to 1, although set font size big, text will not be overflowed screen.
import 'package:auto_size_text/auto_size_text.dart';
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
void initState() {
super.initState();
}
#override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(widget.title),
),
body: _buildBody(),
floatingActionButton: FloatingActionButton(
onPressed: () {},
tooltip: 'Increment',
child: Icon(Icons.add),
),
);
}
Widget _buildBody() {
return Container(
padding: EdgeInsets.symmetric(horizontal: 50, vertical: 30),
child: Column(
crossAxisAlignment: CrossAxisAlignment.center,
children: [
AutoSizeText(
'Smart City',
maxLines: 1,
style: TextStyle(
fontSize: 100,
fontWeight: FontWeight.bold,
),
),
Divider(color: Colors.black),
AutoSizeText.rich(
TextSpan(
children: [
TextSpan(
text: 'Advanced',
),
TextSpan(
text: ' urban',
style: TextStyle(
fontWeight: FontWeight.bold,
),
),
TextSpan(
text: ' lighting solution',
),
],
),
style: TextStyle(fontSize: 100),
maxLines: 1,
),
],
),
);
}
}

Flutter get text from widgets

I am coming from java and now making my very initial steps with flutter.
In my first application I am playing around with the layouts and the buttons and I am facing difficulties getting the button actions to work, probably due to my coming from from java.
In my app I have, among others, the following widgets:
Widget _buttonOne = RaisedButton(
onPressed: () {},
child: Text('Button One', style: TextStyle(fontSize: 20)),
);
final _textContainer =
const Text('Container One', textAlign: TextAlign.center);
Container(
padding: const EdgeInsets.all(8),
child: _textContainer,
color: Colors.teal[200],
),
Now I want to print the text of the button and textchild of the container. How do I achieve that?
CupertinoButton.filled(
child: Text('Button Two'),
onPressed: () {
print(_textContainer); // how do I print the text of the text widget here?
print (_buttonOne. ....); // on java there is a getText() method .... how does this work in flutter?
),
You can access the text of a Text widget by using the data property:
final _textContainer =
const Text('Container One', textAlign: TextAlign.center);
#override
Widget build(BuildContext context) {
return Scaffold(body:
Center(
child: CupertinoButton.filled(
child: Text('Button Two'),
onPressed: () =>
{print(_textContainer.data)},
)
)
);
}
In a similar fashion, you could access the content of the RaisedButton child:
final _raisedButtonText = const Text('Button One', style: TextStyle(fontSize: 20));
Widget _buttonOne = RaisedButton(onPressed: () {}, child: _raisedButtonText);
final _textContainer =
const Text('Container One', textAlign: TextAlign.center);
#override
Widget build(BuildContext context) {
return Scaffold(body:
Center(
child: CupertinoButton.filled(
child: Text('Button Two'),
onPressed: () {
print(_textContainer.data);
print(_raisedButtonText.data);
}
)
)
);
}
You can copy paste run full code below
You can use as to do type casting then access attribute data
code snippet
CupertinoButton.filled(
child: Text('Button Two'),
onPressed: () {
print(_textContainer.data);
print(((_buttonOne as RaisedButton).child as Text).data);
}),
output
I/flutter (30756): Container One
I/flutter (30756): Button One
full code
import 'package:flutter/cupertino.dart';
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,
),
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> {
Widget _buttonOne = RaisedButton(
onPressed: () {},
child: Text('Button One', style: TextStyle(fontSize: 20)),
);
final _textContainer =
const Text('Container One', textAlign: TextAlign.center);
#override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(widget.title),
),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
CupertinoButton.filled(
child: Text('Button Two'),
onPressed: () {
print(_textContainer
.data); // how do I print the text of the text widget here?
print(((_buttonOne as RaisedButton).child as Text).data);
}),
],
),
),
);
}
}

How to create custom InlineSpans in Flutter?

How can I reuse pieces of code of InlineSpan type (e.g. TextSpan, WidgetSpan).
For example,
Text.rich(
TextSpan(
children: [
WidgetSpan(...), // code I like to reuse
... // other stuff
],
),
)
Of course I can write a function, that gives me this InlineSpan, like this:
InlineSpan myCustomWidgetSpan() {
return WidgetSpan(...);
}
This is technically ok, but usually I reuse parts of code by creating a class that extends some other Flutter class (like StatelessWidget or StatefulWidget).
I think that there should be some more idiomatic approach to this. So what are the best practices for reusing code that produces InlineSpan?
You can copy paste run full code below
You can use package https://pub.dev/packages/span_builder
code snippet
final spans = SpanBuilder("The quick brown fox")
.apply(TextSpan(text: "brown", style: TextStyle(fontWeight: FontWeight.bold)))
.apply(TextSpan(text: "🦊"), whereText: "fox")
.build();
Text.rich(
TextSpan(
children: spans
),
),
working demo
full code
import 'package:flutter/material.dart';
import 'package:span_builder/span_builder.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
#override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
),
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> {
int _counter = 0;
final spans = SpanBuilder("The quick brown fox")
.apply(TextSpan(text: "brown", style: TextStyle(fontWeight: FontWeight.bold)))
.apply(TextSpan(text: "🦊"), whereText: "fox")
.build();
void _incrementCounter() {
setState(() {
_counter++;
});
}
#override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(widget.title),
),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Text.rich(
TextSpan(
children: spans
),
),
Text(
'You have pushed the button this many times:',
),
Text(
'$_counter',
style: Theme.of(context).textTheme.headline4,
),
],
),
),
floatingActionButton: FloatingActionButton(
onPressed: _incrementCounter,
tooltip: 'Increment',
child: Icon(Icons.add),
),
);
}
}

Using FontAwesomeIcons with value from custom class in Flutter

I'm trying to use fontawesome together with flutter. Depending on certain content of an Item I'd like to display a certain Icon from fontawesome.
Transaction(id: 1, title: 'lunch', amount: -23.10, type:'utensils'),
Transaction(id: 2, title: 'new shows', amount: -59.99, type:'tshirt'),
Transaction(id: 3, title: 'Falcon launch', amount: -62000000, type:'rocket')
so, I'd like to use the type as an indicator for my fontawesome icon.
When using FontAwesomeIcons.rocket, everything works quite well.
Column(children: <Widget>[
Card(
child: IconButton(
onPressed: null,
icon: new Icon(FontAwesomeIcons.rocket),
),
elevation: 0,
)
],),
since I'm using the map function I'm able to call the type itself without an issue like Text(tx.type). Is there a way to replace the static (in my case) rocket with the type from my transaction class? I'm trying to avoid if/switch cases at the moment just to get the basics going.
Any help very appreciated.
You can copy paste run full code below
You can use https://pub.dev/packages/icons_helper
just prefix rocket with fa.rocket
code snippet
Icon(getIconUsingPrefix(name: 'fa.rocket'),
color: Theme.of(context).backgroundColor, size: 60.0),
working demo
full code
import 'package:flutter/material.dart';
import 'package:icons_helper/icons_helper.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
// This widget is the root of your application.
#override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: MyHomePage(title: 'Flutter Demo + Icon Helper 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> {
int _counter = 0;
Map iconMap = {"a":'fa.rocket'};
void _incrementCounter() {
setState(() {
_counter++;
});
}
#override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(widget.title),
),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Icon(getIconUsingPrefix(name: 'fa.fiveHundredPx'),
color: Theme.of(context).backgroundColor, size: 60.0),
Icon(getIconUsingPrefix(name: 'fa.rocket'),
color: Theme.of(context).backgroundColor, size: 60.0),
Icon(getIconUsingPrefix(name: iconMap["a"]),
color: Theme.of(context).backgroundColor, size: 60.0),
Text(
'There should be an icon above. It\'s neat, isn\'t?\n\nYou can also push the + button and increment this counter for fun:',
),
Text(
'$_counter',
style: Theme.of(context).textTheme.display1,
),
],
),
),
floatingActionButton: FloatingActionButton(
onPressed: _incrementCounter,
tooltip: 'Increment',
child: Icon(Icons.add),
),
);
}
}

Style clipboard in flutter

I am looking for a way to style the clipboard actions without touching textTheme/button property of the main style theme. Is this even possible?
Seems like the style is directly tied to the theme. Not the best idea but if you really wanted to you would need to create a custom popup and handle all the actions yourself.
This should get you started...
Output:
Code:
import 'package:flutter/material.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
// This widget is the root of your application.
#override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
),
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> {
final _controller = new TextEditingController();
final _textfieldFocusNode = new FocusNode();
#override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(widget.title),
),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Padding(
padding: EdgeInsets.all(20.0),
child: GestureDetector(
// intercept all pointer calls
behavior: HitTestBehavior.opaque,
onTap: () {
FocusScope.of(context).requestFocus(_textfieldFocusNode);
},
onLongPress: () {
showMenu(
context: context,
// TODO: Position dynamically based on cursor or textfield
position: RelativeRect.fromLTRB(0.0, 300.0, 300.0, 0.0),
items: [
PopupMenuItem(
child: Row(
children: <Widget>[
// TODO: Dynamic items / handle click
PopupMenuItem(
child: Text(
"Paste",
style: Theme.of(context)
.textTheme
.body2
.copyWith(color: Colors.red),
),
),
PopupMenuItem(
child: Text("Select All"),
),
],
),
),
],
);
},
child: IgnorePointer(
// ensures textfield doesn't overrule GestureDetector
child: TextField(
focusNode: _textfieldFocusNode,
controller: _controller,
),
),
),
)
],
),
),
);
}
}