Flutter Quick Actions change selected Bottom Navigation Bar item - flutter

Question

I'm trying to implement home screen quick actions / app shortcuts in my Flutter app. What I'm trying to achieve is when the user launches my app via a quick action, the app changes the selected tab inside the bottom navigation bar. Any help is appreciated.
main.dart:
runApp(
MaterialApp(
theme: Themes.appLightTheme,
darkTheme: Themes.appDarkTheme,
home: QuickActionsController(
child: HomeFrame(currentIndex: 0),
),
My QuickActionsController class:
import 'package:binfinder/screens/HomeFrame.dart';
import 'package:flutter/material.dart';
import 'package:quick_actions/quick_actions.dart';
class QuickActionsController extends StatefulWidget {
final HomeFrame child;
QuickActionsController({Key key, this.child}) : super(key: key);
#override
_QuickActionsControllerState createState() => _QuickActionsControllerState();
}
class _QuickActionsControllerState extends State<QuickActionsController> {
final QuickActions quickActions = QuickActions();
int _currentIndex = 0;
#override
void initState() {
super.initState();
_handleQuickActions();
_setupQuickActions();
}
void _setupQuickActions() {
quickActions.setShortcutItems(<ShortcutItem>[
ShortcutItem(
type: 'action_map',
localizedTitle: 'Map',
),
]);
}
void _handleQuickActions() {
quickActions.initialize((shortcutType) {
if (shortcutType == 'action_map') {
setState(() {
_currentIndex = 1;
});
} else {
setState(() {
_currentIndex = 0;
});
}
});
}
#override
Widget build(BuildContext context) {
widget.child.currentIndex = _currentIndex;
return widget.child;
}
}

Answer 1

In the demo below, direct click app will enter First Page and In Quick Action choose Main view will enter Second Page
_handleQuickActions need to use
Navigator.pushReplacement(
context,
MaterialPageRoute(
builder: (context) => BottomNavigationBarController(
initialIndex: 1,
)));
and use initial index to control page index
class BottomNavigationBarController extends StatefulWidget {
final int initialIndex;
BottomNavigationBarController({
this.initialIndex,
Key key,
}) : super(key: key);
#override
_BottomNavigationBarControllerState createState() =>
_BottomNavigationBarControllerState();
}
full code
import 'package:flutter/material.dart';
import 'package:quick_actions/quick_actions.dart';
import 'dart:io';
class QuickActionsManager extends StatefulWidget {
final Widget child;
QuickActionsManager({Key key, this.child}) : super(key: key);
_QuickActionsManagerState createState() => _QuickActionsManagerState();
}
class _QuickActionsManagerState extends State<QuickActionsManager> {
final QuickActions quickActions = QuickActions();
#override
void initState() {
super.initState();
_setupQuickActions();
_handleQuickActions();
}
#override
Widget build(BuildContext context) {
return widget.child;
}
void _setupQuickActions() {
quickActions.setShortcutItems(<ShortcutItem>[
ShortcutItem(
type: 'action_main',
localizedTitle: 'Main view',
icon: Platform.isAndroid ? 'quick_box' : 'QuickBox'),
ShortcutItem(
type: 'action_help',
localizedTitle: 'Help',
icon: Platform.isAndroid ? 'quick_heart' : 'QuickHeart')
]);
}
void _handleQuickActions() {
quickActions.initialize((shortcutType) {
if (shortcutType == 'action_main') {
Navigator.pushReplacement(
context,
MaterialPageRoute(
builder: (context) => BottomNavigationBarController(
initialIndex: 1,
)));
} else if (shortcutType == 'action_help') {
print('Show the help dialog!');
}
});
}
}
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
// This widget is the root of your application.
#override
Widget build(BuildContext context) {
return MaterialApp(
title: 'QuickActions Demo',
home: QuickActionsManager(child: BottomNavigationBarController(initialIndex: 0,)));
}
}
class Home extends StatelessWidget {
const Home({Key key}) : super(key: key);
#override
Widget build(BuildContext context) {
return Scaffold(body: Center(child: Text('Home')));
}
}
class Login extends StatelessWidget {
const Login({Key key}) : super(key: key);
#override
Widget build(BuildContext context) {
return Scaffold(body: Center(child: Text('Login')));
}
}
class BottomNavigationBarController extends StatefulWidget {
final int initialIndex;
BottomNavigationBarController({
this.initialIndex,
Key key,
}) : super(key: key);
#override
_BottomNavigationBarControllerState createState() =>
_BottomNavigationBarControllerState();
}
class _BottomNavigationBarControllerState
extends State<BottomNavigationBarController> {
final List<Widget> pages = [
FirstPage(
key: PageStorageKey('Page1'),
),
SecondPage(
key: PageStorageKey('Page2'),
),
];
final PageStorageBucket bucket = PageStorageBucket();
int _selectedIndex = 0;
Widget _bottomNavigationBar(int selectedIndex) => BottomNavigationBar(
onTap: (int index) => setState(() => _selectedIndex = index),
currentIndex: selectedIndex,
items: const <BottomNavigationBarItem>[
BottomNavigationBarItem(
icon: Icon(Icons.add), title: Text('First Page')),
BottomNavigationBarItem(
icon: Icon(Icons.list), title: Text('Second Page')),
],
);
#override
void initState() {
_selectedIndex = widget.initialIndex;
super.initState();
}
#override
Widget build(BuildContext context) {
return Scaffold(
bottomNavigationBar: _bottomNavigationBar(_selectedIndex),
body: PageStorage(
child: pages[_selectedIndex],
bucket: bucket,
),
);
}
}
class FirstPage extends StatelessWidget {
const FirstPage({Key key}) : super(key: key);
#override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text("First Screen"),
),
body: ListView.builder(itemBuilder: (context, index) {
return ListTile(
title: Text('Lorem Ipsum'),
subtitle: Text('$index'),
);
}),
);
}
}
class SecondPage extends StatelessWidget {
const SecondPage({Key key}) : super(key: key);
#override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text("Second Screen"),
),
body: ListView.builder(itemBuilder: (context, index) {
return ListTile(
title: Text('Lorem Ipsum'),
subtitle: Text('$index'),
);
}),
);
}
}
demo, emulator is a little slow when enter Second Page