How can I hide the Android Navigation Bar in React Native?
I'm referring to the bar at the bottom of the screen that has the software back button and home button, not the component at the top of the page that comes with the Navigator Component.
This page on android.com explains how to do it for native developers. Can someone explain how to accomplish this via React Native apps? Thanks.
If you're looking to achieve this permanently you'll have to hide the Navbar when the app is created and when it comes back into focus.
To do so, add this in your MainActivity.java:
...
import android.os.Bundle;
import android.view.View;
public class MainActivity extends ReactActivity {
...
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
hideNavigationBar();
}
#Override
public void onWindowFocusChanged(boolean hasFocus) {
super.onWindowFocusChanged(hasFocus);
if (hasFocus) {
hideNavigationBar();
}
}
private void hideNavigationBar() {
getWindow().getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_HIDE_NAVIGATION);
}
}
You may want to make it "immersive" so that the user can still access the navigation bar by pulling from the bottom of the screen.
To do so, add the View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY flag:
...
import android.os.Bundle;
import android.view.View;
public class MainActivity extends ReactActivity {
...
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
hideNavigationBar();
}
#Override
public void onWindowFocusChanged(boolean hasFocus) {
super.onWindowFocusChanged(hasFocus);
if (hasFocus) {
hideNavigationBar();
}
}
private void hideNavigationBar() {
getWindow().getDecorView().setSystemUiVisibility(
View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
| View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY);
}
}
You can find more options on the android documentation.
To hide the Android Navigation bar you can do that using react-native-navigation-bar-color it allows you to show or hide the navigation bar. You can see more in the documentation here. Note that it will not work on Expo as it requires you to link native code.
Installation is fairly straight forward:
npm install react-native-navigation-bar-color --save
Then you need to link the package (only for react-native <= 0.59.0):
react-native link react-native-navigation-bar-color
Once you have done that you can use it in the following way:
import {
HideNavigationBar,
ShowNavigationBar,
} from 'react-native-navigation-bar-color';
Then when you want to show the navigation bar you just use
ShowNavigationBar();
And to hide it you can use:
HideNavigationBar();
Building off of Martin Konicek's answer:
I went ahead and wrote the Package and Module you need here: https://gist.github.com/dhrrgn/16a8dfa7581a682627c6
You need to add it in your MainActivity.java file in the getPackages method, and send the package the ReactActivity object like this: new NavigationBarAndroidPackage(this)
Note: The code is untested, but it should work for you (you need to change the package on the first line). I just used the example code provided in the link you sent as an example. Modify to your needs.
I've created a package with navigation bar hide/show, color change and more.
react-native-system-navigation-bar
Install
yarn add react-native-system-navigation-bar
or
npm install react-native-system-navigation-bar
Links
https://www.npmjs.com/package/react-native-system-navigation-bar
https://github.com/kadiraydinli/react-native-system-navigation-bar
There is no built-in API to do this from JavaScript.
The good news is in React Native you can expose any native functionality to JavaScript, by writing a native module. See documentation.
This way you can provide a JS function like NavigationBarAndroid.hide() and make it call the API you linked to.
Use this: https://github.com/Anthonyzou/react-native-full-screen
usage:
import FullScreen from 'react-native-full-screen'
FullScreen.onFullScreen()
FullScreen.offFullScreen()
for expo builds:
expo install expo-navigation-bar
prevents content from jumping up with the navbar
NavigationBar.setPositionAsync("absolute");
hides the navbar
NavigationBar.setVisibilityAsync("hidden");
transparent background
NavigationBar.setBackgroundColorAsync("#ffffff00");
user can still swipe to show buttons
NavigationBar.setBehaviorAsync("inset-swipe");
I tried to wrap my screen in <TouchableWithoutFeedback > to be able to use onPress prop with NavigationBar.setVisibilityAsync("hidden"), but even without onPress the bottom navbar shows only for a brief second on swipe
Im in Android 9 and i did test the
import {HideNavigationBar} from 'react-native-navigation-bar-color';
but when Make Alt tabbing to another app, and returns then the nav bar appears again.
The best solution for me until moment is as said
Louis Zawadzki
Copying that on my mainactivity.java works fine, and always hide after changes.
I was stuck at the exact same point today. I found a medium article that got the job done. This question seems to be quite old however, some new readers might find this helpful.
https://medium.com/#mykl.ashton/how-to-hide-the-android-pie-navigation-bar-in-react-native-895e34c9e41
In this article, the writer has written native java methods to control the navigation bar and then used react native bridge to access the methods from react side.
It's a long article but has worked fantastically for me! hope this helps!
Related
How to hide Android status bar in native game written with gomobile?
I am experimenting with a simple native Android game written in pure Go using the gomobile tool. It should be able to use the full screen for rendering frames. However I could not find an API to hide the status bar from the native app.
Has anyone tackled this issue? If so, please share the directions.
Create a Empty Activity .
Go and find
android:theme="" on Activity XML Files
Set it to #style/Theme.AppCompat.NoActionBar
Pro Tip :
dont know other people but I always delete
Menu/Menu_Activity.Xml
That Contains Menu XML files !
Also Remove Menu.OnClick Codes Located on The Class of Your
Activity
Update :
Emm ... did you change :
public class Setup extends ActionBarActivity {
to
public class Setup extends Activity {
???
On the manifest add: theme: Theme.AppCompat.NoActionBar
For each activity page in which you dont want to show the status bar
This is how to disable the Android status bar in a native application written with gomobile:
Add this exact theme to AndroidManifest.xml:
<activity android:name="org.golang.app.GoNativeActivity"
android:theme="#android:style/Theme.NoTitleBar.Fullscreen"
</activity>
I've followed the example pattern for handling the android back button in the react-native docs and it works well. I can use the hardware back button to pop my navigation stack.
At the point that there's only 1 view in the stack though I don't pop it (just like the example), and I return false from my hardwareBackPress event listener. At this point it I see the componentWillUnmount method being called in my final view, at which point my app shuts down.
If I return true then nothing happens at all obviously.
What I want to happen is that the app merely gets "backgrounded" instead of exiting completely.
Answered my own question. The trick is to override the default back button behaviour in the MainActiviy:
public class MainActivity extends ReactActivity {
#Override
protected String getMainComponentName() {
return "foo";
}
#Override
public void invokeDefaultOnBackPressed() {
// do not call super. invokeDefaultOnBackPressed() as it will close the app. Instead lets just put it in the background.
moveTaskToBack(true);
}
}
Though I may be very late in giving the answer it may help other facing the issue.
Recently I came across the same requirement where I have to move the app to the background. I tried the solution provided by #pomo. Though it worked I faced problems. Sometimes on multiple clicking of the back button, the app misbehaves in android though it worked perfectly fine in iOS.
And then I came across the following issues in GitHub where it mentions the reason for the misbehaviour.
The following solution works perfectly fine now.
// android/app/.../MainActivity.java
#Override
public void invokeDefaultOnBackPressed() {
moveTaskToBack(true);
}
<!-- AndroidManifest.xml -->
<activity
...
android:launchMode="singleTop">
Link from where I get the solution
I hope I'm able to help guys with the same requirement.
As a newbie in Android programming I'm playing with some Material Design. So I wanted to implement a Navigation Drawer. After looking for libraries I decided to use #neokrees MaterialNavigationDrawer (https://github.com/neokree/MaterialNavigationDrawer). I added it into my build.gradle and followed the instructions from the wiki.
As a base I'm using a MainActivity which holds a toolbar and a fragment.
I created a custom style for the drawer and wrote a simple NavigationDrawer subclass.
import it.neokree.materialnavigationdrawer.MaterialNavigationDrawer;
public class NavigationDrawer extends MaterialNavigationDrawer {
#Override
public void init(Bundle savedInstanceState) {
this.addSection(newSection("Section", new MainActivity.PlaceholderFragment()));
}
}
Then I added this to AndroidManifest.xml
<activity android:name=".NavigationDrawer"android:theme="#style/MyNavigationDrawerTheme" />
So everything compiles fine, the app starts up but nothing happens. So as first try I added a section to the drawer, relating to an activity. As I saw that the first item should be a fragment, I replaced it accordingly. Then I looked into the example app, but I don't get it to compile. Anyway, there is also no drawer-relevant code in the MainActivity.
So it's most probably a really dumb failure, but I have no idea anymore. So I would be thankful for any help.
I implemented navigation drawer as described here in android developer portal.
And everything works fine. Now I read android guidlines here. In section "Introduce the user to the drawer at first use" there is described I should open the drawer when application launches first. Now my idea for implementing this is to open the drawer after opening the app (and maybe close it again).
Now I tried to call myDrawer.openDrawer(Gravity.LEFT) in onCreate and the drawer is open when the app launches, but there's no animation. So onCreate seems to be the wrong place. Where should I place the call to openDrawer to let the user see the animation?
I guess you can do this by delaying the animation. For example:
#Override
protected void onResume() {
super.onResume();
myDrawer.postDelayed(new Runnable() {
#Override
public void run() {
myDrawer.openDrawer(Gravity.LEFT)
}
}, 1000);
}
However the fact that the Android Guidelines suggests the drawer to be opened when the application launches for the first time, does not imply it should be animated.
I have this problem with the Android ActionBarCompat project: On emulators with Android 4.0 the click on the app icon doesn't cause any onOptionsItemSelected event, whereas it works on all other OS versions.
Any input is greatly appreciated!
Are you seeing any touch feedback from the app icon? (Does it glow when you press it?)
Since many activities do not use the action bar home button, in apps that target API 14+ running on Android 4.0 it is disabled by default. (This is so that users don't try pressing it, see it glow, and wonder why nothing happened.) Apps that want to use this should call ActionBar#setHomeButtonEnabled(true).
We should probably revise the ActionBarCompat sample to surface this more clearly. One simple way to get you up and running would be to modify ActionBarHelperICS.java and add the following:
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mActivity.getActionBar().setHomeButtonEnabled(true);
}
In an app where you want more control over turning this on and off you would want to make further changes.
I had this problem as well. This code did the trick for me:
public void onCreate(Bundle savedInstanceState) {
...
if (android.os.Build.VERSION.SDK_INT >= 11) {
//noinspection ConstantConditions
getActionBar().setHomeButtonEnabled(true);
} else {
getSupportActionBar().setHomeButtonEnabled(true);
}
}
Some extra info: minSdkVersion="7" targetSdkVersion="18". This is the LAUNCHER activity of my project, so it has no parent activity. Using setDisplayHomeAsUpEnabled(true) in other activities worked just fine.