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Description:

flutter custom tabs

flutter_custom_tabs #

A Flutter plugin for mobile apps to launch a URL in Custom Tabs.
The plugin allows you to add the browser experience that Custom Tabs provides to your mobile apps.
In version 2.0, the plugin expands the support for launching a URL in mobile apps:

Launch a URL in an external browser.
Launch a deep link URL.

Android
iOS
Web

Support
SDK 19+
11.0+
Any

Implementation
Custom Tabs
SFSafariViewController
url_launcher

Getting Started #
Add flutter_custom_tabs to the dependencies of your pubspec.yaml.
dependencies:
flutter_custom_tabs: ^2.1.0
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Important
v2.0.0 includes breaking changes from v1.x. Please refer to the migration guide when updating the plugin.

Requirements for Android #

Android Gradle Plugin v7.4.0 and above.
Kotlin v1.7.0 and above.

// your-project/android/build.gradle
buildscript {
ext.kotlin_version = '1.7.0' // and above if explicitly depending on Kotlin.

dependencies {
classpath 'com.android.tools.build:gradle:7.4.0' // and above.
}
}
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Usage #
You can launch a web URL similar to url_launcher and specify options to customize appearance and behavior.

Android
iOS

Basic Usage #
import 'package:flutter/material.dart';
import 'package:flutter_custom_tabs/flutter_custom_tabs.dart';

void _launchURL(BuildContext context) async {
final theme = Theme.of(context);
try {
await launchUrl(
Uri.parse('https://flutter.dev'),
customTabsOptions: CustomTabsOptions(
colorSchemes: CustomTabsColorSchemes.defaults(
toolbarColor: theme.colorScheme.surface,
),
shareState: CustomTabsShareState.on,
urlBarHidingEnabled: true,
showTitle: true,
closeButton: CustomTabsCloseButton(
icon: CustomTabsCloseButtonIcons.back,
),
),
safariVCOptions: SafariViewControllerOptions(
preferredBarTintColor: theme.colorScheme.surface,
preferredControlTintColor: theme.colorScheme.onSurface,
barCollapsingEnabled: true,
dismissButtonStyle: SafariViewControllerDismissButtonStyle.close,
),
);
} catch (e) {
// If the URL launch fails, an exception will be thrown. (For example, if no browser app is installed on the Android device.)
debugPrint(e.toString());
}
}
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See the example app for more complex examples.
Usage of the lightweight version #
This package supports a wide range of Custom Tabs customizations,
but we have introduced a lightweight URL launch for users who don't need as much in v2.0.0.

Note
On Android, the lightweight version prefers launching the default browser that supports Custom Tabs over Chrome.

import 'package:flutter/material.dart';
import 'package:flutter_custom_tabs/flutter_custom_tabs_lite.dart';

void _launchURL(BuildContext context) async {
final theme = Theme.of(context);
try {
await launchUrl(
Uri.parse('https://flutter.dev'),
options: LaunchOptions(
barColor: theme.colorScheme.surface,
onBarColor: theme.colorScheme.onSurface,
barFixingEnabled: false,
),
);
} catch (e) {
// If the URL launch fails, an exception will be thrown. (For example, if no browser app is installed on the Android device.)
debugPrint(e.toString());
}
}
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Custom Tabs Customization #

Option
Android (CustomTabsOptions)
iOS (SafariViewControllerOptions)
LaunchOptions

Change background color of app/bottom bar
✅
✅
✅

Change color of controls on app/bottom bar
-(Automatically adjusted by Custom Tabs)
✅
✅

Change background color of system navigation bar
✅
-
✅

Change color of system navigation divider
✅
-
✅

Hide(Collapse) the app bar by scrolling
✅
✅
✅

Add sharing action for web pages
✅
-
✅(always added on Android)

Change visibility of web page title
✅
-
✅(always shown on Android)

Change the availability of Reader mode
-
✅
Not provided

Change appearance of close button
✅(Icon, position)
✅(Predefined button styles)
Not provided

Change the availability of Instant Apps
✅
-
Not provided

Change animation style
✅
✅(Predefined modal presentation styles)
Not provided

Prefer the default browser over Chrome
✅
-
Not provided

Pass HTTP headers
✅
-
Not provided

Show as a bottom sheet
✅
✅
Not provided

Support status in flutter_custom_tabs:

✅: Supported.
-: Option not provided by Custom Tabs implementation.

Advanced Usage #
Deep Linking #
Supports launching a deep link URL.
(If a native app that responds to the deep link URL is installed, it will directly launch it. otherwise, it will launch a custom tab.)
import 'package:flutter/material.dart';
import 'package:flutter_custom_tabs/flutter_custom_tabs.dart';
// or import 'package:flutter_custom_tabs/flutter_custom_tabs_lite.dart';

Future<void> _launchDeepLinkURL(BuildContext context) async {
final theme = Theme.of(context);
await launchUrl(
Uri.parse('https://www.google.com/maps/@35.6908883,139.7865242,13z'),
prefersDeepLink: true,
customTabsOptions: CustomTabsOptions(
colorSchemes: CustomTabsColorSchemes.defaults(
toolbarColor: theme.colorScheme.surface,
),
),
safariVCOptions: SafariViewControllerOptions(
preferredBarTintColor: theme.colorScheme.surface,
preferredControlTintColor: theme.colorScheme.onSurface,
),
);
}
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Launch in an external browser #
By default, if no mobile platform-specific options are specified, a URL will be launched in an external browser.

Tip
Android: CustomTabsOptions.externalBrowser supports HTTP request headers.

import 'package:flutter_custom_tabs/flutter_custom_tabs.dart';

Future<void> _launchInExternalBrowser() async {
await launchUrl(Uri.parse('https://flutter.dev'));
}
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Show as a bottom sheet #
You can launch a URL in Custom Tabs as a bottom sheet.
Requirements:

Android: Chrome v107 and above or other browsers
iOS: 15.0+

import 'package:flutter/material.dart';
import 'package:flutter_custom_tabs/flutter_custom_tabs.dart';

Future<void> _launchURLInBottomSheet(BuildContext context) async {
final theme = Theme.of(context);
final mediaQuery = MediaQuery.of(context);
await launchUrl(
Uri.parse('https://flutter.dev'),
customTabsOptions: CustomTabsOptions.partial(
configuration: PartialCustomTabsConfiguration(
initialHeight: mediaQuery.size.height * 0.7,
),
colorSchemes: CustomTabsColorSchemes.defaults(
toolbarColor: theme.colorScheme.surface,
),
),
safariVCOptions: SafariViewControllerOptions.pageSheet(
configuration: const SheetPresentationControllerConfiguration(
detents: {
SheetPresentationControllerDetent.large,
SheetPresentationControllerDetent.medium,
},
prefersScrollingExpandsWhenScrolledToEdge: true,
prefersGrabberVisible: true,
prefersEdgeAttachedInCompactHeight: true,
),
preferredBarTintColor: theme.colorScheme.surface,
preferredControlTintColor: theme.colorScheme.onSurface,
dismissButtonStyle: SafariViewControllerDismissButtonStyle.close,
),
);
}
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Prefer the default browser over Chrome #
On Android, the plugin defaults to launching Chrome, which supports all Custom Tabs features.
You can prioritize launching the default browser on the device that supports Custom Tabs over Chrome.

Note
Some browsers may not support the options specified in CustomTabsOptions.

See: Custom Tabs Browser Support.

import 'package:flutter_custom_tabs/flutter_custom_tabs.dart';

Future<void> _launchURLInDefaultBrowserOnAndroid() async {
await launchUrl(
Uri.parse('https://flutter.dev'),
customTabsOptions: CustomTabsOptions(
browser: const CustomTabsBrowserConfiguration(
prefersDefaultBrowser: true,
),
),
);
}
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Close the Custom Tabs #
You can manually close the Custom Tabs.
import 'package:flutter_custom_tabs/flutter_custom_tabs.dart';

Future<void> _closeCustomTabsManually() async {
await closeCustomTabs();
}
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