Persistent bottom navigation bar flutter - flutter

Question

I used a bottom navigation bar in flutter using this widget,
how can I make that bottom navigation bar show on all the pages?
and can I make it appear when I choose a page from drawer??
please help me,

Answer 1

You can actually achieve this with the pageview widget
https://api.flutter.dev/flutter/widgets/PageView-class.html
With this, you can have all the pages inside one class and build the bottom navigation bar underneath the pageview widget. By default the pages are swipeable but you can disable it doing
Scaffold(
body:
Container(
child:
Column(
children: <Widget> [
PageView(
physics:new NeverScrollableScrollPhysics())
controller: _controller,
children: [
MyPage1(),
MyPage2(),
MyPage3(),
],
),
googleNavBar()
]
)
);

Answer 2

May I suggest you to use flutter builtin BottomNavigationBar widget instead of third party widget.
Here is my code you can modify as per you requirement. Hope this will help.
class DashboardScreen extends StatefulWidget {
#override
_DashboardScreenState createState() => _DashboardScreenState();
}
class _DashboardScreenState extends State<DashboardScreen> with SingleTickerProviderStateMixin {
final _selectedItemColor = Colors.white;
final _unselectedItemColor = Color(0xFF828282);
final _selectedBgColor = Color(0xFF00cde7);
final _unselectedBgColor = Colors.transparent;
int _currentIndex = 0;
GlobalKey<ScaffoldState> _key = GlobalKey();
// List of body of current screen you import/create from other dart file.
final List<Widget> _children = [
HomeScreen(),
AppointmentScreen(id: 1),
PaymentScreen(id: 1),
ProfileScreen(id: 1)
];
// List of dynamic app bar for different page. You can also import/create app bar easily
final List<Widget> _childAppBar = [
HomeAppBar(),
AppointmentAppBar(),
PaymentAppBar(),
ProfileAppBar()
];
void _onItemTapped(int index) {
setState(() {
_currentIndex = index;
});
debugPrint("Tapped item : $index");
}
Color _getBgColor(int index) =>
_currentIndex == index ? _selectedBgColor : _unselectedBgColor;
Color _getItemColor(int index) =>
_currentIndex == index ? _selectedItemColor : _unselectedItemColor;
Widget _buildIcon(IconData iconData, String text, int index) => Container(
width: MediaQuery.of(context).size.width,
height: kBottomNavigationBarHeight,
child: Material(
color: _getBgColor(index),
child: InkWell(
child: Column(
mainAxisSize: MainAxisSize.max,
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.stretch,
children: <Widget>[
Container(
child: Column(
children: [
Icon(iconData, color: _getItemColor(index)),
Text(text,
style: TextStyle(fontSize: 12, fontWeight: FontWeight.w500, fontFamily: 'Poppins', color: _getItemColor(index))),
],
),
),
],
),
onTap: () => _onItemTapped(index), // function responsible for navigation on tap
),
),
);
#override
Widget build(BuildContext context) {
return MaterialApp(
debugShowCheckedModeBanner: false,
home: Scaffold(
key: _key,
appBar: _childAppBar.elementAt(_currentIndex), // this is dynamic app bar
body: _children.elementAt(_currentIndex), // this is dynamic body of the current screen
bottomNavigationBar:
BottomNavigationBar(
currentIndex: 0,
type: BottomNavigationBarType.fixed,
iconSize: 30.0,
items: [
BottomNavigationBarItem(
icon: _buildIcon(Icons.home, "Home", 0), // Check this _buildIcon function above
title: SizedBox.shrink(),
),
BottomNavigationBarItem(
icon: _buildIcon(Icons.group, "Appointment", 1),
title: SizedBox.shrink(),
),
BottomNavigationBarItem(
icon: _buildIcon(Icons.add_circle_outline, "Make Payment", 2),
title: SizedBox.shrink(),
),
BottomNavigationBarItem(
icon: _buildIcon( Icons.person_outline, "My Account", 3),
title: SizedBox.shrink(),
),
]
),
drawer: _currentIndex == 0 || _currentIndex == 3 ? Drawer( // check to show drawer on particular screen
child: ListView(
padding: const EdgeInsets.all(0.0),
children: <Widget>[
UserAccountsDrawerHeader(
accountName: Text("Mohammad Gayasuddin"),
accountEmail: Text("ladla8602#gmail.com"),
currentAccountPicture: CircleAvatar(
backgroundColor: Colors.white70,
)),
ListTile(
title: Text('Login'),
trailing: Icon(Icons.lock),
onTap: () {
Navigator.push(
context,
MaterialPageRoute(
builder: (context) => LoginScreen(),
),
);
}),
ListTile(
title: Text('Sign Up'),
trailing: Icon(Icons.add_circle_outline),
onTap: () {
Navigator.push(
context,
MaterialPageRoute(
builder: (context) => RegisterScreen(),
),
);
})
],
),
) : PreferredSize(
child: Container(),
preferredSize: Size(0.0, 0.0),
),
),
);
}
}