navigate to other screen remove back button from app bar - flutter

i have Four screen like 1,2,3 and 4 when i navigate from screen 4 to screen 1 using bellow code. the back arrow button in my appbar of screen 1 it's automatically removed don't know how to fix this.
Thanks in advance.
Navigator.of(context).pushNamedAndRemoveUntil(
'/screen4', ModalRoute.withName('/screen1'));

Add this below code in the screen 1 app-bar
AppBar(
title: Text("Title"),
leading: IconButton(
icon: Icon(Icons.arrow_back),
onPressed: () {
Navigator.of(context).pop();
},
),
);

Related

How to add back icon image in app bar in flutter

In Flutter i need to add back icon image in app bar in flutter. I m new to flutter learning & developing any help would be appreciated.
I need to customise the back button image in app bar
Please let me know How to add back icon image in app bar in flutter?
Back IconButton is automatically enabled when you Navigate from another screen.
By using this code
Navigator.push(
context,
MaterialPageRoute(builder: (context) => SecondRoute()),
);
If you already Navigated from another screen and are still not showing then slightly change the AppBar field
AppBar(
automaticallyImplyLeading:true,
)
There is a widget call : BackButtonIcon()
AppBar(
leading: IconButton(
onPressed: () {
Navigator.of(context).pop();
},
icon: const BackButtonIcon(),
),)
if you use an AppBar widget in your Scaffold, the back arrow icon will be displayed automatically when you push a new page with the Navigator.
If you want to add manually the icon, you can add it in the leading property inside the AppBar:
AppBar(
leading: IconButton(
icon: const BackButtonIcon(),
onPressed: () { },
)
);

Custom Back button flutter

Hi guys i want to chage the beheviour of exiting back button funcionality of Android's defaul bottom bar. In my app if i press the "arrow" it close the application but i want to it come back to previous screen. I don't know how to do it i tried with appBar but using onPressed () appears a black screen. Altrought my mind the best and elegant solution is to change the "arrow" beheviour and it also has to work for IOS. How can i do it?
This is the appBar code
appBar: AppBar(
leading: IconButton(
icon: Icon(Icons.arrow_back, color: Colors.black),
onPressed: () => Navigator.of(context).pop(),
color: red,
),
),
if you want to change the behaviour of the bottom back button of app you can use onWillPop
WillPopScope(
onWillPop: () => backPress(),
child: Scaffold(
......
and backpress function decides what to do instead
Future<bool> backPress() async {
print("hellp");
return false;
}

Floating action button to be ontop of drawer after opening

I have a floating action button which opens the drawer. I want it to stay in its place when it opens the drawer and just change the icon to close icon with animation. I couldn't find a good solution to do this.
I tried wrapping inside my drawer with scaffold and adding a floating action button there and using hero widgets so make it look like it stays in its place but didn't help at all.
Is there anyway to achieve this?
U can use foldable Sidebar package to achieve this functionalities that's package is available on :
https://pub.dev/packages/foldable_sidebar
And check this piece of code how to use this :
child: Scaffold(
body: FoldableSidebarBuilder(
drawerBackgroundColor: Colors.deepOrange,
drawer: CustomDrawer(closeDrawer: (){
setState(() {
drawerStatus = FDBStatus.FDB_CLOSE; // For Closing the Sidebar
});
},),
screenContents: FirstScreen(), // Your Screen Widget
status: drawerStatus,
),
floatingActionButton: FloatingActionButton(
backgroundColor: Colors.deepOrange,
child: Icon(Icons.menu,color: Colors.white,),
onPressed: () {
// To Open/Close Sidebar
setState(() {
drawerStatus = drawerStatus == FDBStatus.FDB_OPEN ? FDBStatus.FDB_CLOSE : FDBStatus.FDB_OPEN;
});
}),
),
),

Long hold on back arrow of action bar in flutter shows a "Back" toast, how to remove that?

How to remove the toast displayed on the Action bar in a flutter on Long hold on back arrow.
In your appBar you can replace the leading parameter by what you want.
Try replacing it with :
AppBar(
leading: IconButton(
icon: Icon(Icons.arrow_back),
onPressed: () {
Navigator.of(context).pop();
},
),
),
It should remove the tooltip. If you want to customize it, see the tooltip parameter of IconButton
Use an IconButton as leading widget of your AppBar like,
Scaffold(
appBar: AppBar(
leading: IconButton(
onPressed: () {
Navigator.of(context).pop();
},
icon: Icon(Icons.arrow_back),
// tooltip: 'Back', // this cause the overlay
),
),
);

Flutter FloatingActionButton and IconButton

How can I create a FloatingActionButton like in the image?
I tried using FloatingActionButton, but it looks like a whole button with a circle.
I need something like an IconButton as shown in the image.
IconButton will actually deliver the result you are aiming for!
A FloatingActionButton, by guidelines, will always deliver the design you find on your "View in Your Room" titled button.
IconButton(
icon: Icon(Icons.back),
onPressed...
)
You need to use IconButton as below
// Icon Button
new IconButton(
icon: new Icon(Icons.favorite),
tooltip: 'Facorite icon',
color: Colors.blue, //set color which you want
onPressed: () {
// Do your work
},
),
For this, you can use actions ** property of appbar to put icons on the right side of title and **leading property to put a leading icon.
appbar: new AppBar(
leading: new Icon(Icons.search),
actions: <Widget>[
new Icon(Icons.search),
new Icon(Icons.search),
],
title: new Text("title"),
)
I suggest using an Icon inside a GestureDetector widget. This will give you the result you want, but also getting rid of the unnecessary padding around an IconButton.
GestureDetector(
onTap: () {},
child: Icon(Icons.arrow_back, color: Colors.black)
)