Flutter : Open Page from page inside bottomnavigationview - dart

Question

i want to open profile page from home page without press 'profile' button inside bottomnavigation item.
Thanks for help.
this is a main class of my project. i put all page here and i already import all page here.
MainClass
int _currentIndex = 0;
final List<Widget> _children = [
HomePage(),
MessagePage(),
ProfilePage()
];
#override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('My Flutter App'),
),
body: _children[_currentIndex],
bottomNavigationBar: BottomNavigationBar(
currentIndex: _currentIndex,
onTap: onTabTapped,
items: [
BottomNavigationBarItem(
icon: new Icon(Icons.home),
title: new Text('Home'),
),
BottomNavigationBarItem(
icon: new Icon(Icons.mail),
title: new Text('Messages'),
),
BottomNavigationBarItem(
icon: Icon(Icons.person),
title: Text('Profile')
)
],
),
);
}
and this my home page. this page same as profile and message page. i need to open profile page from home page without pressing profile menu in bottom. i just wanna press profile button inside home page.
HomePage
import 'package:flutter/material.dart';
import 'package:navigation/profile_page.dart';
class HomePage extends StatefulWidget {
_HomePageState createState() => _HomePageState();
}
class _HomePageState extends State<HomePage> {
#override
Widget build(BuildContext context) {
return Scaffold(
body: Center(
child: Column(
children: <Widget>[
Text("Home Page"),
RaisedButton(
child: Text("GO TO PROFILE PAGE"),
onPressed: (){
);
},
)
],
),
),
);
}
}

Answer 1

This can be done by directly calling the class name.
For example consider Profile() be the class extending statefull class.
Home class
....
int _index = 1;
final options = [
Text('Home'),
Text('Message'),
Profile() //directly call the class to load
];
#override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text("My flutter app"),
),
body: Center(
child: options.elementAt(_index),
),
bottomNavigationBar: BottomNavigationBar(
items: [
new BottomNavigationBarItem(
icon: Icon(Icons.home),
title: Text('Home'),
),
new BottomNavigationBarItem(
icon: Icon(Icons.message),
title: Text('message'),
),
new BottomNavigationBarItem(
icon: Icon(Icons.person),
title: Text('profile')
)
],
currentIndex: _index,
onTap: _onTapped,
),
);
}
void _onTapped(int index) {
setState(() {
_index = index;
});
}
Similarly you can load other classes too.
hope it helped:)