How to Tell If the Screen Is on in Android

How can I tell if the screen is on in android?

You can accomplish this by setting up broadcast receivers for ACTION_SCREEN_ON and ACTION_SCREEN_OFF.

How to tell if screen is on with ADB

In doing some testing I've found that using adb shell dumpsys power | grep mScreenOn will work on devices that have a version number of 4.2+

The command that I have found to work on all devices I have tested so far is to use:

 adb shell dumpsys input_method | grep mScreenOn

which will produce something like:

mSystemReady=true mScreenOn=true

which you can use to determine if the screen is on.

Tested on all Android Emulators in the range 2.2 - 4.4.2, Samsung Galaxy SII (4.0.4), Samsung Galaxy Tab 8.9 (4.0.4), and Nexus 4 with CM11

Also worth mentioning, on pre 4.2 devices you can use the command adb shell dumpsys power | grep mPowerState to get something like this:

mIsPowered=true mPowerState=3 mScreenOffTime=24970 ms
mPowerState=SCREEN_BRIGHT_BIT SCREEN_ON_BIT

and detect if the SCREEN_ON_BIT string is present

how to check screen on/off status in onStop()?

You can try to use PowerManager system service for this purpose, here is example and official documentation (note this method was added in API level 7):

PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
boolean isScreenOn = pm.isScreenOn();

EDIT:

isScreenOn() method is deprecated API level 21. You should use isInteractive instead:

boolean isScreenOn = pm.isInteractive();

http://developer.android.com/reference/android/os/PowerManager.html#isInteractive()

Screen on/off detection

Intent.ACTION_SCREEN_OFF and ACTION_SCREEN_ON check out for above broadcasts registration. here you can find a good example.

Detect Always-On Display when trying to determine if the screen is off

I found that the flags don't actually have anything to do with it. It seems that the display state will be one of several states including Display.STATE_DOZE_SUSPENDED, Display.STATE_DOZE and several others when the Always-On Display is active. So instead, I'm just checking for Display.STATE_ON and treating all other states as the display being turned off.

public boolean isScreenOn() {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT_WATCH) {
        DisplayManager dm = (DisplayManager) getSystemService(Context.DISPLAY_SERVICE);
        for (Display display : dm.getDisplays()) {
            if (display.getState() == Display.STATE_ON) {
                return true;
            }
        }
        return false;
    } else {
        PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
        //noinspection deprecation
        return pm.isScreenOn();
    }
}

Check if screen is in MultiWindowMode without activity

Inside Fragment you can use

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
    if (((Activity)getContext()).isInMultiWindowMode()){
        // ...
    }
}

How to check If I am currently on home screen

if (apps.get(0).topActivity.getPackageName().equals("com.android.launcher")

this somehow solved my problem only for default home

Getting if Screen ON/OFF and if Application is in Background/Foreground

There have been similar questions on Stackoverflow earlier. Here are links to a few of them:

1. How to determine if one of my activities is in the foreground

2. android:how to check if application is running in background

3. How can I tell if Android app is running in the foreground?

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