Android bottom navigation appears when pressing on Flutter bottom navigation bar - android

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.

Related

Hiding default navigation bar in app on Android devices

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

How to hide android's bottom navigation bar in flutter

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()),
);
}

Hide navigation bar, android 4.2+

Is it possible to hide navigation bar on e.g. tablets in activity, so it does not appear when user is clicking on the screen?
I want it to appear only when user is swiping from bottom to middle of the screen, just like in e.g. Real Racing 3.
When I use:
myView.setSystemUiVisibility(View.SYSTEM_UI_FLAG_HIDE_NAVIGATION);
Unfortunetly navigation bar is hidden, but when user is clicking, it appears again. I want it to work only with this swipe gesture. How it can be achieved?
This is a platform behavior. Apps do not have the sort of control of the navigation bar that you are looking for, and for good reason. All it takes is one app not implementing a way to show the nav bar and the user is stuck. You will have to design your app with the platform's behavior in mind.

Android, remove lower status bar

Im developing an android 3.0 + app.
I want to remove the status bar at the BOTTOM of the screen, the one with the android nav and time in. I've managed to remove the top bar already.
Anyone know how it's done?
Thanks
I want to remove the status bar at the BOTTOM of the screen, the one with the android nav and time in.
This is not supported. The user needs the system bar in order to navigate the device (e.g., press HOME).

Android SlidingDrawer on top of the notification bar (or toggle visibility of that one)

I am currently developing an application which is not fullscreen (Notification bar is visible). On the bottom of most of my activities, I have a sliding drawer that brings up a kind of dashboard. As of now, this sliding drawer is part of the main RelativeLayout and shows/hides fine. However, of course, it gets expanded up to the bottom of the notification area.
I would need this sliding drawer to cover the notification bar in order for it to take the whole screen. Maybe by attaching it to the main Layout instead of the activity Layout?
Another way that would be ok would be to hide the notification bar (maybe using an animation to slide it up) when the sliding drawer is opening and show it back when the drawer is closing.
Has anybody managed to do such a thing?
You cannot draw Views on top of the notification bar. You can hide it by making your application fullscreen, but that's all.

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