How can I change the function of the back button in dart flutter
I really didn't try anything because tbh, i didn't find what to try
You need simply to override the leading property in the AppBar with a new IconButton, then set your specific method:
AppBar(
leading: IconButton(
onPressed: () {
print("clicked");
},
icon: Icon(Icons.abc),
),
),
Related
When navigating between pages in flutter, if the second page has an AppBar, by default the AppBar comes with an IconButton to go back to the previous page. Is there a way to set a custom icon for that IconButton that is different than the one provided by default by Flutter and will be applied to every other page? Kind of like a custom AppBarTheme?
You can remove the BackButton and handling it by yourself, using:
AppBar(
automaticallyImplyLeading: false,
leading: Navigator.canPop(context)
? IconButton(
icon: Icon(
Icons.arrow_back,
color: Colors.black,
size: 47,
),
onPressed: () => Navigator.of(context).pop(),
)
: null,
);
flutter, what is the right way to change appbar leading icon at app theme level? so I no need to change on each screen?
I know the following code work for specific screen...
AppBar(
title: Text("Hello Appbar"),
leading: Icon(
Icons.arrow_back,
),
);
but I don't want to do it on each screen, Just checking here if I can set it at app theme level so it is same for all screen...
I referred flutter documentation for appbar, but it was not much helpful.
You can do something like this
import 'package:flutter/material.dart';
AppBar MyAppBar({Widget title, Widget leading}) {
return AppBar(
title: title,
leading: leading,
);
}
Use IconButton to change the leading icon.
AppBar(
title: Text("Hello Appbar"),
leading: IconButton(
onPressed: () {},
icon: Icon(Icons.arrow_back)
),
);
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;
}
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
),
),
);
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)
)