How to create a hyperlink in Flutter widget?
FlutterFlutter Problem Overview
I would like to create a hyperlink to display in my Flutter app.
The hyper link should be embedded in a Text or similar text views like:
The last book bought is <a href='#'>this</a>
Any hint to do this?
Flutter Solutions
Solution 1 - Flutter
Just wrap an InkWell around a Text widget and supply an UrlLauncher (from the service library) to the onTap attribute. Install UrlLauncher as a Flutter package before using it below.
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:url_launcher/url_launcher.dart';
void main() {
runApp(new MyApp());
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return new MaterialApp(
home: new Scaffold(
appBar: new AppBar(
title: new Text('UrlLauncher'),
),
body: new Center(
child: new InkWell(
child: new Text('Open Browser'),
onTap: () => launch('https://docs.flutter.io/flutter/services/UrlLauncher-class.html')
),
),
),
);
}
}
You can supply a style to the Text widget to make it look like a link.
Update
After looking into the issue a little I found a different solution to implement the 'in line' hyperlinks you asked for. You can use the RichText Widget with enclosed TextSpans.
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:url_launcher/url_launcher.dart';
void main() {
runApp(new MyApp());
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return new MaterialApp(
home: new Scaffold(
appBar: new AppBar(
title: new Text('UrlLauchner'),
),
body: new Center(
child: new RichText(
text: new TextSpan(
children: [
new TextSpan(
text: 'This is no Link, ',
style: new TextStyle(color: Colors.black),
),
new TextSpan(
text: 'but this is',
style: new TextStyle(color: Colors.blue),
recognizer: new TapGestureRecognizer()
..onTap = () { launch('https://docs.flutter.io/flutter/services/UrlLauncher-class.html');
},
),
],
),
),
),
),
);
}
}
This way you can actually highlight one word and make a hyperlink out of it ;)
Solution 2 - Flutter
Flutter doesn't have built-in hyperlink support but you can fake it yourself. There's an example in the Gallery's drawer.dart. They use a RichText widget containing a coloured TextSpan, which has a recognizer attribute to handle taps:
RichText(
text: TextSpan(
children: [
TextSpan(
style: bodyTextStyle,
text: seeSourceFirst,
),
TextSpan(
style: bodyTextStyle.copyWith(
color: colorScheme.primary,
),
text: repoText,
recognizer: TapGestureRecognizer()
..onTap = () async {
final url = 'https://github.com/flutter/gallery/';
if (await canLaunch(url)) {
await launch(
url,
forceSafariVC: false,
);
}
},
),
TextSpan(
style: bodyTextStyle,
text: seeSourceSecond,
),
],
),
Solution 3 - Flutter
You can wrap your Text in a GestureDetector or InkWell and handle click in onTap(). If you want to launch a url, you can use url_launcher package.
GestureDetector(
child: Text("Click here", style: TextStyle(decoration: TextDecoration.underline, color: Colors.blue)),
onTap: () async {
const url = 'https://www.google.com';
if (await canLaunch(url)) launch(url);
},
)
Solution 4 - Flutter
You can use package flutter_linkify
https://pub.dev/packages/flutter_linkify
Just want to provide another option.
Package will divide your text and highlight http/https automatically
Combine plugin url_launcher you can launch url
You can check example below:
full code below
import 'package:flutter/material.dart';
import 'package:flutter_linkify/flutter_linkify.dart';
import 'dart:async';
import 'package:url_launcher/url_launcher.dart';
void main() => runApp(new LinkifyExample());
class LinkifyExample extends StatelessWidget {
@override
Widget build(BuildContext context) {
return new MaterialApp(
title: 'flutter_linkify example',
home: Scaffold(
appBar: AppBar(
title: Text('flutter_linkify example'),
),
body: Center(
child: Linkify(
onOpen: _onOpen,
text: "Made by https://cretezy.com \n\nMail: [email protected] \n\n this is test http://pub.dev/ ",
),
),
),
);
}
Future<void> _onOpen(LinkableElement link) async {
if (await canLaunch(link.url)) {
await launch(link.url);
} else {
throw 'Could not launch $link';
}
}
}
Solution 5 - Flutter
If you want to make it look even more like a link, you can add underline:
new Text("Hello Flutter!", style: new TextStyle(color: Colors.blue, decoration: TextDecoration.underline),)
and the result:
Solution 6 - Flutter
You can use Link Text https://pub.dev/packages/link_text and use it like
final String _text = 'Lorem ipsum https://flutter.dev\nhttps://pub.dev';
@override
Widget build(BuildContext context) {
return Scaffold(
body: Center(
child: LinkText(
text: _text,
textAlign: TextAlign.center,
),
),
);
}
Solution 7 - Flutter
In Flutter 2.0, the Link widget was introduced. Use this widget to launch webpages and also navigate to new screens in your app. you need to use the url_launcher package before using it.
url_launcher: ^6.0.8
Link(
uri: Uri.parse('https://androidride.com'),
//target: LinkTarget.self,
builder: (context, followLink) {
return RichText(
text: TextSpan(children: [
TextSpan(
text: 'Click here: ',
style: TextStyle(
fontSize: 20,
color: Colors.black,
),
),
TextSpan(
text: 'AndroidRide',
style: TextStyle(
color: Colors.blue,
decoration: TextDecoration.underline,
fontWeight: FontWeight.bold,
fontSize: 21,
),
recognizer: TapGestureRecognizer()
..onTap = followLink,
),
]),
);
}),
),
SizedBox(
height: 20,
),
Link(
uri: Uri.parse('/second'),
builder: (context, followLink) {
return InkWell(
onTap: followLink,
child: Text(
'Go to Second Screen',
style: TextStyle(
fontSize: 20,
color: Colors.blue,
decoration: TextDecoration.underline,
),
),
);
},
),
Solution 8 - Flutter
You could use the flutter_html plugin if you want to have more advanced text capabilities:
Html(
data: 'The last <i><u><b>book</b></u></i> bought is <a href="#">this</a>',
onLinkTap: (url, context, attrs, element) {
// Handle link tapped...
},
)
This is just the tip of the iceberg of capabilities with this plugin.
Just a thought: You could even host parts of your flutter app online as html and render them in flutter as widgets with this plugin.
Solution 9 - Flutter
An alternative (or not) way to put clickable links in your app (for me it just worked that way):
1 - Add the url_launcher package in your pubspec.yaml file
(the package version 5.0 didn't work well for me, so I'm using the 4.2.0+3).
dependencies:
flutter:
sdk: flutter
url_launcher: ^4.2.0+3
2 - Import it and use as below.
import 'package:flutter/material.dart';
import 'package:url_launcher/url_launcher.dart';
void main() {
runApp(MaterialApp(
title: 'Navigation Basics',
home: MyUrl(),
));
}
class MyUrl extends StatelessWidget {
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('Url Launcher'),
),
body: Center(
child: FlatButton(
onPressed: _launchURL,
child: Text('Launch Google!',
style: TextStyle(fontSize: 17.0)),
),
),
);
}
_launchURL() async {
const url = 'https://google.com.br';
if (await canLaunch(url)) {
await launch(url);
} else {
throw 'Could not launch $url';
}
}
}
Solution 10 - Flutter
The answers to this question that suggest using RichText with a TextSpan + GestureRecognizer are all functionally correct, but from the UX perspective, they do not provide feedback to the user responding to the touch. To maintain consistency with other Material widgets, you could use a similar approach, but use a WidgetSpan + InkWell instead.
This example uses the url_launcher package and an unstyled InkWell, but you can customize as you see fit:
import 'package:flutter/material.dart';
import 'package:url_launcher/url_launcher.dart';
class TextWithLink extends StatelessWidget {
const TextWithLink({Key? key}) : super(key: key);
@override
Widget build(BuildContext context) {
const textStyle = TextStyle(color: Colors.black); // default style for all text
return RichText(
text: TextSpan(
style: textStyle,
children: [
const TextSpan(
text: 'The last book bought is ',
),
WidgetSpan(
alignment: PlaceholderAlignment.middle,
child: InkWell(
onTap: () => _launchUrl('https://url-to-launch.com'),
child: Text('this',
style: textStyle.merge(const TextStyle(
color: Colors.blue, fontWeight: FontWeight.bold))))), // override default text styles with link-specific styles
],
),
);
}
_launchUrl(String url) async {
if (await canLaunch(url)) {
await launch(url);
} else {
throw 'Could not launch $url';
}
}
}
Solution 11 - Flutter
Here is a turn-key package https://pub.dev/packages/link_text
child: LinkText(
'Hello check http://google.com',
textStyle: ...,
),
Safer to use a library for this kind of complexity
Pros:
- takes in the entire string as a single param
- parses the links and renders them into the UI as clickable , inline with the non-clickable text
- no complex RichText structure required