how to access PageViewController outside of widget - flutter

Question

TabScreen is my main widget in my app that includes a BottomNavigationBar and a PageView to transition between pages.
PageController allows me to change views and everything is fine here, but there is one thing missing. How can I change my PageView controller outside of TabScreen? I'd like to put a button to access my main PageView controller from within my pages.
class _TabsScreenState extends State<TabsScreen> {
bool _isloading = true;
int? _selectedIndex;
List<Widget>? _pages = [
HomeScreen(),
CurrenPlanDetail(),
Container(),
ProfileScreen(),
SettingScreens(),
];
PageController? _pageController;
#override
void initState() {
_selectedIndex = 0;
_pageController = PageController(initialPage: _selectedIndex!);
}
}
Widget build(BuildContext context) {
return Scaffold(
body: PageView(
controller: _pageController,
children: _pages!,
physics: NeverScrollableScrollPhysics(),
),
bottomNavigationBar: Visibility(
visible: !_isloading,
child: BottomNavigationBar(
type: BottomNavigationBarType.fixed,
selectedItemColor: kNewPurple,
//unselectedItemColor: Colors.grey,
currentIndex: _selectedIndex!,
onTap: (value) {
setState(() {
_selectedIndex = value;
_pageController!.jumpToPage(_selectedIndex!);
});
},
backgroundColor: Colors.grey[300],
items: [
BottomNavigationBarItem(
icon: Icon(
Ionicons.home_outline,
size: 15.sp,
),
label: 'Home'),
BottomNavigationBarItem(
icon: Icon(
Ionicons.reader_outline,
size: 15.sp,
),
label: 'Plan'),
BottomNavigationBarItem(
icon: ElevatedButton(
style: ElevatedButton.styleFrom(
shape: CircleBorder(),
fixedSize: Size(50, 50),
),
onPressed: () {
showModalBottomSheet(
context: context,
builder: (context) {
return FloatingButton();
});
},
child: Icon(Ionicons.add)),
label: ''),
BottomNavigationBarItem(
icon: Icon(
Ionicons.happy_outline,
size: 15.sp,
),
label: 'Profile'),
BottomNavigationBarItem(
icon: Icon(
Ionicons.settings_outline,
size: 15.sp,
),
label: 'Setting'),
],
),
),
);
}
}
for example, somewhere in my app, I'd like to put a button and pass a function like this :
_pageController!.jumpToPage(1);

Answer 1

Define PageController as static and
TabScreen.pageController.jumpToPage(1);