Agfdhyk

If my app is running and i press home button, the app goes in background. Now if a long press the home button and kill the app by swiping it from the recent app list, none of the events like onPause(), onStop() or onDestroy() gets called rather the process is terminated. So if i want my services to stop, kill notifications and unregister listeners, how can i do that? I read quite a few articles and blogs but didn't get any useful information and I haven't found any documentation about it.
Any help would be appreciated.
Thanks in advance.

I just resolved a similar kind of issue.

Here is what you can do if its just about stopping service when application is killed by swiping from Recent app list.

Inside your Manifest file, keep flag stopWithTask as true for Service. Like:

<service

    android:name="com.myapp.MyService"

    android:stopWithTask="true" />

But as you say you want to unregister listeners and stop notification etc, I would suggest this approach:

1. 
   

   Inside your Manifest file, keep flag stopWithTask as false for Service. Like:

   
   
   

   <service
   
       android:name="com.myapp.MyService"
   
       android:stopWithTask="false" />
   
   

   
   


2. 
   

   Now in your MyService service, override method onTaskRemoved. (This will be fired only if stopWithTask is set to false).

   
   
   

   public void onTaskRemoved(Intent rootIntent) {
   
   
   
       //unregister listeners
   
       //do any other cleanup if required
   
   
   
       //stop service
   
       stopSelf();  
   
   }
   
   

   
   

Refer my question for more details, which contains other part of code, too.

Hope this helps.

Found one way to do this

make one service like this

public class OnClearFromRecentService extends Service {



@Override

public IBinder onBind(Intent intent) {

    return null;

}



@Override

public int onStartCommand(Intent intent, int flags, int startId) {

    Log.d("ClearFromRecentService", "Service Started");

    return START_NOT_STICKY;

}



@Override

public void onDestroy() {

    super.onDestroy();

    Log.d("ClearFromRecentService", "Service Destroyed");

}



@Override

public void onTaskRemoved(Intent rootIntent) {

    Log.e("ClearFromRecentService", "END");

    //Code here

    stopSelf();

}

}

2)register this service in manifest.xml

<service android:name="com.example.OnClearFromRecentService" android:stopWithTask="false" />

3) Then start this service on your splash activity

startService(new Intent(getBaseContext(), OnClearFromRecentService.class));

And now whenever you will clear your app from android recent Then this method onTaskRemoved() will execute.

I resolved similar issue. If you want after swiping from recent task and on next launch it to behave properly then follow below steps:-

1) Save process ID in shared preference:

SharedPreferencesUtils.getInstance().putInt(SharedPreferencesUtils.APP_PROCESS_ID, android.os.Process.myPid());

2) When application is launched from launcher after clear from recent task then do:

int previousProcessID = mSharedPreferencesUtils.getInt(SharedPreferencesUtils.APP_PROCESS_ID);



int currentProcessID = android.os.Process.myPid();



if ((previousProcessID == currentProcessID)) {

    // This ensures application not killed yet either by clearing recent or anyway

} else {

    // This ensures application killed either by clearing recent or by anyother means

}

When you press home - onPause and onStop of your Activity is being called, so at this time you have to do all savings and cleanup, because Android platform doesn't further guarantee that onDestroy or any other lifecycle method would be invoked, so the process could be killed without any notification.

You need to save your data when on onPause() is called.
Look at this life cycle diagram:
Android Developer

You can see that an app can be killed after onPause() or onStop().

Handle your data there and recover it in onRestart() onCreate().

good luck!