I'm really new in flutter and also in Android dev, but is it possible to hide the bottom navigation bar (see which item do i mean below) programmatically?
Try this:
SystemChrome.setEnabledSystemUIOverlays([SystemUiOverlay.top]);
Document
For specifies the set of system overlays to have visible when the application
is running. you can use below static method:
SystemChrome.setEnabledSystemUIOverlays(List<SystemUiOverlay> overlays)
Examples :
1 - For Hide bottom navigation bar and Still Status bar visible
SystemChrome.setEnabledSystemUIOverlays([SystemUiOverlay.top]);
2 - For Still bottom navigation visible bar and Hide Status bar
SystemChrome.setEnabledSystemUIOverlays([SystemUiOverlay.bottom]);
3 - For hide both bottom Navigation and Status bar
SystemChrome.setEnabledSystemUIOverlays([]);
4 - For make both visible
SystemChrome.setEnabledSystemUIOverlays([SystemUiOverlay.top, SystemUiOverlay.bottom]);
At the time of writing this answer all of the other posts here are outdated, using setEnabledSystemUIOverlays will give a deprecation message.
To hide the system navigation bar or status bar import:
import 'package:flutter/services.dart';
And use the service SystemChrome.setEnabledSystemUIMode
SystemChrome.setEnabledSystemUIMode(SystemUiMode.immersiveSticky);
The function setEnabledSystemUIMode receives the SystemUiMode Enum which has the following options:
leanBack - Fullscreen display with status and navigation bars presentable by tapping anywhere on the display.
immersive - Fullscreen display with status and navigation bars presentable through a swipe gesture at the edges of the display.
immersiveSticky - Fullscreen display with status and navigation bars presentable temporarly through a swipe gesture at the edges of the display.
edgeToEdge - Fullscreen display with status and navigation elements rendered over the application.
manual - Declares manually configured [SystemUiOverlay]s. (look at the docs for more information)
Use SystemChrome.setEnabledSystemUIOverlays([]) to hide the status bar and the navigation bar.
I think you can use this
SystemChrome.setEnabledSystemUIMode(SystemUiMode.manual, overlays: [SystemUiOverlay.top]);
in your initState()
Currently this feature is bugged in flutter, you can see this issue here.
https://github.com/flutter/flutter/issues/62412
Normally you would need to do the following:
SystemChrome.setEnabledSystemUIOverlays([SystemUiOverlay.top]);
This Approach is depreciated
SystemChrome.setEnabledSystemUIOverlays([SystemUiOverlay.top]);
To show the status bar only
SystemChrome.setEnabledSystemUIMode(SystemUiMode.immersiveSticky,overlays: [SystemUiOverlay.top]);
To show the system navigation bar only
SystemChrome.setEnabledSystemUIMode(SystemUiMode.immersiveSticky,overlays: [SystemUiOverlay.bottom]);
To hide both
SystemChrome.setEnabledSystemUIMode(SystemUiMode.immersiveSticky,
overlays: []);
It is better the put it before the runApp method like this
void main() {
WidgetsFlutterBinding.ensureInitialized();
SystemChrome.setEnabledSystemUIMode(SystemUiMode.immersiveSticky, overlays:[]).then(
(_) => runApp(MyApp()),
);
}
Related
I'm trying to hide my android default navigation bar. I'm using SystemChrome on my main.dart :
void main() async {
SystemChrome.setEnabledSystemUIOverlays([SystemUiOverlay.top]);
...
But whenever I'm touching my screen the navigation bar appears again.
On the other hand, when I'm hiding both top and bottom using:
void main() async {
SystemChrome.setEnabledSystemUIOverlays([]);
...
They are both permanently remove.
I need to remove only the bottom navigation bar. What is the problem? How can I fix that?
Thanks
I'm using SystemChrome.setEnabledSystemUIOverlays([SystemUiOverlay.top]);
to only display the top system overlay (Where you normally see time and notifications) and disable bottom navigation of the device (3 buttons in android or slider in IOS).
Problem is that when I try to press the Bottom Navigation Bar of my Flutter application, it automatically activates the bottom bar of the system, blocking out the bottom navigation bar of the app.
Resizing the app is not suitable for me. I don't want this to happen, and system navigation should only appear when user slides from the bottom.
Help is appreciated.
Can you share your code so that I can have a better Idea,
// to hide only bottom bar:
SystemChrome.setEnabledSystemUIOverlays ([SystemUiOverlay.top]);
// to hide only status bar:
SystemChrome.setEnabledSystemUIOverlays ([SystemUiOverlay.bottom]);
// to hide both:
SystemChrome.setEnabledSystemUIOverlays ([]);
//to bring them back:
SystemChrome.setEnabledSystemUIOverlays(SystemUiOverlay.values)
Implement the in your code and it should work.
Currently working on a fullscreen mobile app, building using react-native. I have managed to hide the status bar and default navigation bar on Android devices. However, when I start to put in text input tags that prompts a keyboard on the screen, the default navigation bar re-appears and could not be hidden even I've dismissed the keyboard.
Is there any way to prevent the default navigation bar re-appears when the keyboard pops up?
The reasons are that I need to remove the navigation bar to have enough space to locate the needed components on the app UI design. If the navigation bar re-appears the design will be messed up. Thank you for any advice.
I think this is what you're looking for:
static navigationOptions = {
header: null,
};
Put this on top of each screen
I have one View which I want to put in the whole screen, ie.. by making the status bar (top bar) and navigation bar (bottom bar) translusent and putting some portion of the view behind it. I tried the using the flags :
View.SYSTEM_UI_FLAG_HIDE_NAVIGATION | View.SYSTEM_UI_FLAG_FULLSCREEN
But they just hide them, and on touching these flags get cleared. It is understandable that android OS wants user to always have the navigation bar and that is why it is showing them again, but isn't there a way to just show our view behind the navigation bar.
I manage to put my layout behind the status bar using
WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN
But still, how can I put my view behind Navigation bar too.
Also I am developing the app for API level 14 and above, so I cant use, IMMERSIVE_STICKY or IMMERSIVE mode. Any Suggestions will be appreciated.
Is there a way to show, only while loading, a webview's progress bar, at the bottom of the app ?
Currently, my progress bar is showed in the title bar. But I don't want it there. I want it at the botton of the app.
Is there a way to do it ?
Thanks!
A solution is to hide the title bar (not necessary but it will save screen space), and add your own progress bar at the bottom of your layout.
But it goes against the normal user interface standards and could be confusing to users so I wouldn't recommend to change the progress bar location.