Android disable screen timeout while app is running

Android Problem Overview

Is there a way to disable the screensaver while my app is running?

The dimming of the screen is what I mean.

Android Solutions

Solution 1 - Android

You want to use something like this:

getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);

Solution 2 - Android

I used:

getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);

to disable the screen timeout and

getWindow().clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);

to re-enable it.

Solution 3 - Android

There is also a XML way that Google recommends:

<LinearLayout
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:keepScreenOn="true">

Check Google Slides - Slide 16.

> "Wakelocks are costly if forgotten (...) Consider using > android:keepScreenOn to ensure correctness"

Solution 4 - Android

In a View, in my case a SurfaceView subclass, you can set the screen on always on. I wanted the screen to stay on while this view was still drawing stuff.

public class MyCoolSurfaceView extends SurfaceView { 
@Override
protected void onAttachedToWindow (){
	super.onAttachedToWindow();
	this.setKeepScreenOn(true);
}

@Override
protected void onDetachedFromWindow(){
	super.onDetachedFromWindow();
	this.setKeepScreenOn(false);
}

Solution 5 - Android

Its importante to note that these methods all must be run from the UI thread to work. See https://stackoverflow.com/questions/18406722/changing-keepscreenon-from-javascript-in-android-cordova-app

Solution 6 - Android

Simple add below line into your MainActivity and your App never turn lights off.

getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);

Solution 7 - Android

Put this at onStart

> PowerManager powerManager = (PowerManager) getSystemService(Context.POWER_SERVICE); wakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "no sleep"); wakeLock.acquire();

And this at you manifest

	<uses-permission android:name="android.permission.WAKE_LOCK" />

Don't forget to

wakeLock.release();

at onStop

Solution 8 - Android

1.getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);is best solution for Native Android.
2. if you want to do with React android application then please use the below code.

@ReactMethod
    public void activate() {
        final Activity activity = getCurrentActivity();
        if (activity != null) {
            activity.runOnUiThread(new Runnable() {
                @Override
                public void run() {
                    activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
                }
            });
        }

    }

Solution 9 - Android

this is the best way to solve this

 getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN | WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);

Solution 10 - Android

android:keepScreenOn="true"

is the better way to handle this if we want to make any particular screen awake all the time otherwise we have to handle yourself when to enable it and to disable it

https://developer.android.com/training/scheduling/wakelock.html

Solution 11 - Android

procedure SetSleep(aEnable:Boolean);
var
    vFlags: integer;
begin
    vFlags := TJWindowManager_LayoutParams.JavaClass.FLAG_TURN_SCREEN_ON or
        TJWindowManager_LayoutParams.JavaClass.FLAG_DISMISS_KEYGUARD or
        TJWindowManager_LayoutParams.JavaClass.FLAG_SHOW_WHEN_LOCKED or
        TJWindowManager_LayoutParams.JavaClass.FLAG_KEEP_SCREEN_ON;

    if aEnable then
    begin
      CallInUIThread (   // uses FMX.Helpers.Android
      procedure
      begin
        TAndroidHelper.Activity.getWindow.setFlags (vFlags, vFlags);
      end );
    end
    else
      CallInUIThread (
      procedure
      begin
        TAndroidHelper.Activity.getWindow.clearFlags (vFlags);
      end );
end;

Solution 12 - Android

This can be done by acquiring a Wake Lock.

I didn't tested it myself, but here is a small tutorial on this.

Content Type	Original Author	Original Content on Stackoverflow
Question	clamp	View Question on Stackoverflow
Solution 1 - Android	Ian G. Clifton	View Answer on Stackoverflow
Solution 2 - Android	capellone78	View Answer on Stackoverflow
Solution 3 - Android	neteinstein	View Answer on Stackoverflow
Solution 4 - Android	orkoden	View Answer on Stackoverflow
Solution 5 - Android	user3599945	View Answer on Stackoverflow
Solution 6 - Android	Null Pointer Exception	View Answer on Stackoverflow
Solution 7 - Android	Gonkas	View Answer on Stackoverflow
Solution 8 - Android	Manisha	View Answer on Stackoverflow
Solution 9 - Android	MBMJ	View Answer on Stackoverflow
Solution 10 - Android	Sandeep Tengale	View Answer on Stackoverflow
Solution 11 - Android	Artur Majtczak	View Answer on Stackoverflow
Solution 12 - Android	wonne	View Answer on Stackoverflow