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    <pre><code>public class MyApplication extends Application { private int lastInteractionTime; private Boolean isScreenOff = false; public void onCreate() { super.onCreate(); // ...... startUserInactivityDetectThread(); // start the thread to detect inactivity new ScreenReceiver(); // creating receive SCREEN_OFF and SCREEN_ON broadcast msgs from the device. } public void startUserInactivityDetectThread() { new Thread(new Runnable() { @Override public void run() { while(true) { Thread.sleep(15000); // checks every 15sec for inactivity if(isScreenOff || getLastInteractionTime()&gt; 120000 || !isInForeGrnd) { //...... means USER has been INACTIVE over a period of // and you do your stuff like log the user out } } } }).start(); } public long getLastInteractionTime() { return lastInteractionTime; } public void setLastInteractionTime(int lastInteractionTime) { this.lastInteractionTime = lastInteractionTime; } private class ScreenReceiver extends BroadcastReceiver { protected ScreenReceiver() { // register receiver that handles screen on and screen off logic IntentFilter filter = new IntentFilter(); filter.addAction(Intent.ACTION_SCREEN_ON); filter.addAction(Intent.ACTION_SCREEN_OFF); registerReceiver(this, filter); } @Override public void onReceive(Context context, Intent intent) { if (intent.getAction().equals(Intent.ACTION_SCREEN_OFF)) { isScreenOff = true; } else if (intent.getAction().equals(Intent.ACTION_SCREEN_ON)) { isScreenOff = false; } } } } </code></pre> <p><strong>isInForeGrnd ===> logic is not shown here as it is out of scope of the question</strong></p> <p>You can wake the lock to the cpu by using the device code below-</p> <pre><code> if(isScreenOff || getLastInteractionTime()&gt; 120000 || !isInForeGrnd) { //...... means USER has been INACTIVE over a period of // and you do your stuff like log the user out PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE); boolean isScreenOn = pm.isScreenOn(); Log.e("screen on.................................", "" + isScreenOn); if (isScreenOn == false) { PowerManager.WakeLock wl = pm.newWakeLock(PowerManager.FULL_WAKE_LOCK | PowerManager.ACQUIRE_CAUSES_WAKEUP | PowerManager.ON_AFTER_RELEASE, "MyLock"); wl.acquire(10000); PowerManager.WakeLock wl_cpu = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "MyCpuLock"); wl_cpu.acquire(10000); } } </code></pre>
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    1. POHow to detect user inactivity in Android
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    1. COsorry, but this is not the right way doing it.
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    2. CO@Nappy: Then please explain the right way of doing this. Your comment is vague and indecisive.
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    3. CO@AKh: The other answers already show the possibilities. In your solution, I cannot see any benefit from polling every 15 seconds. It would have the same effect, as you start a timer on "ACTION_SCREEN_OFF" with a random duration from 0-15 seconds. This just does not make sense..
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