Vfrdtyky

Goal is: run Activity to foreground from Service when phone has locked screen, and set window focus in launched Activity.

Prepare:

set phone to the locked state by power button,

run Activity from Service:

Intent i = new Intent(mCtx, RecActivity.class);

i.putExtra(RecActivity.INTENT_REQUEST, intentExtra);

i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

ctx.startActivity(i); //ctx is context

In Activity onCreate() run this method:

private void checkIntentExtraData(){

    try {

        //Check Intent

        Intent i = getIntent();

        Bundle extras = i.getExtras();

        if(extras != null) {

            /*PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);

            PowerManager.WakeLock wl = pm.newWakeLock(PowerManager.FULL_WAKE_LOCK

                    | PowerManager.ACQUIRE_CAUSES_WAKEUP

                    | PowerManager.ON_AFTER_RELEASE, "INFO");

            wl.acquire();*/



            window.addFlags(WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON);

            window.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);



            if (Build.VERSION.SDK_INT < Build.VERSION_CODES.O) {

                window.addFlags(WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD); //This constant was deprecated in API level 26.

                window.addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED); //This constant was deprecated in API level 27. => setShowWhenLocked(  

            }



            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) { //API 26+ Android 8.0+

                KeyguardManager km = (KeyguardManager) getSystemService(Context.KEYGUARD_SERVICE);

                if(km != null)

                    km.requestDismissKeyguard(this, null);

            }



            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O_MR1) { //API 27+ Android 8.1+

                setShowWhenLocked(true);

                setTurnScreenOn(true);

            }



            Log.i(TAG, "hasWindowFocus: "+hasWindowFocus()); //TODO

        }

    } catch (Exception e){

        e.printStackTrace();

    }

}

Activity is run, callbacks are: onCreate()=>onResume()=>onPause().

I do not want to run onPause() method. It's probably, because Activity has no focus (hasWindowFocus() return false).

Any suggestions? Thank you.

I tried too, but not working:

android:showOnLockScreen="true"

in Manifest.

I think km.requestDismissKeyguard(this, null); should be called after the setShowWhenLocked() method