Question

So I have an activity that goes over my lockscreen. But when I exit it it breaks my lockscreen. Ok, not literally… but I cant successfully LOCK my phone again. I have to restart it. I feel like I am just forgetting to put something in my onDestroy – like I have to reput the lockscreen after its done. Idk. What is the problem?

Lockscreen Activity:

@Override
public void onCreate(Bundle icicle){
    super.onCreate(icicle);
    setContentView(R.layout.lockscreen);
    getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON|
            WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED);//gotta get it to open on lock screen

    ImageView iv = (ImageView)findViewById(R.id.Background);
    //iv.getBackground().setAlpha(50);

    Button close = (Button)findViewById(R.id.Close);
    close.setOnClickListener(new OnClickListener(){
        @Override
        public void onClick(View v) {
            finish();
        }
    });

    KeyguardManager km = (KeyguardManager)getSystemService(KEYGUARD_SERVICE);
    final KeyguardManager.KeyguardLock kl = km.newKeyguardLock("IN");
    kl.disableKeyguard();

    PowerManager pm = (PowerManager) getSystemService(POWER_SERVICE);
    PowerManager.WakeLock wl=pm.newWakeLock(PowerManager.ACQUIRE_CAUSES_WAKEUP | PowerManager.FULL_WAKE_LOCK, "My_App");
    wl.acquire();

    /*Builder adb = new AlertDialog.Builder(this);
    adb.setMessage("Testing");
    adb.setCancelable(false);
    adb.setNeutralButton("Close",new DialogInterface.OnClickListener(){
        @Override
        public void onClick(DialogInterface dialog, int which) {
            kl.reenableKeyguard();
        }
    });
    AlertDialog ad = adb.create();
    ad.show();*/

    wl.release();
}

As you see I just finish the activity. Am I forgetting to do something onDestroy?

Thanks

Answer 1

Wow… its as easy as this:

kl.reenableKeyguard();

put this is the button that cancels it:

@Override
        public void onClick(View v) {
            kl.reenableKeyguard();
            finish();
        }

Still trying to figure out how to make it uncancelable through the back button though….

EDIT:

Seems I dont need the final on KL. so this is how you would do it:

KeyguardManager.KeyguardLock kl;

@Override
public void onDestroy(){
    kl.reenableKeyguard();
    super.onDestroy();
}

@Override
public void onCreate(Bundle icicle){
    super.onCreate(icicle);
    setContentView(R.layout.lockscreen);
    KeyguardManager km = (KeyguardManager)getSystemService(KEYGUARD_SERVICE);
    kl = km.newKeyguardLock("IN");
    kl.disableKeyguard();
}

Just for anyone who needs this in the future.