Flags to show a view on top of lock screen

Question

I am trying to add a view(ImageButton for example) to Window using WindowManager.addView(button),

What are the layout params so that the button can be seen on "lock screen".

Thanks in advance.

score 2 · Answer 1 · edited Oct 16 '18 at 05:25

2

You can try adding type as WindowManager.LayoutParams.TYPE_SYSTEM_ERROR in the WindowManager.LayoutParams constructor which is illustrated below :

WindowManager.LayoutParams params=new WindowManager.LayoutParams();
params.type=WindowManager.LayoutParams.TYPE_SYSTEM_ERROR;

The aforementioned lines will make the view to appear on lock screen where you can capture touch events, click events and many others; However, you can use the below-mentioned flag for the non-touchable view.

WindowManager.LayoutParams.TYPE_SYSTEM_OVERLAY

Note: As per Android Developers The above-mentioned both flags are deprecated in API Level 26 and so you can use the flag TYPE_APPLICATION_OVERLAY as a substitute.

edited Oct 16 '18 at 05:25

Pishang Ujeniya

176
5
13

answered Jun 05 '15 at 19:47

Yogesh Sundareshan

171
1
13

Thanks for digging out an old question and answering. I appreciate it. – tekkavi Jun 05 '15 at 20:18
@tekkavi thanks, anyway this would help for those who has the same problem currently – Yogesh Sundareshan Jun 06 '15 at 10:20
2

Good Reply. Make sure to add the below android permission in Android Manifest – prodeveloper Aug 03 '15 at 06:59

Jatin Malwal · Answer 2 · 2013-09-10T11:46:21.937

1

You have to make an activity with transparent background with view on the top which you want to show on the lockscreen. Now call that activity when your phone wakes up. Note : You have to make an service which will start your activity. You have to register a broadcast receiver to that service.

edited Sep 10 '13 at 11:46

answered Sep 10 '13 at 11:31

Jatin Malwal

5,133
2
23
26

I am aware of how to show it via Activity, thats why i mentioned that i will be using WindowManager.addView() Thanks for the effort though. – tekkavi Sep 11 '13 at 05:25

score 0 · Answer 3 · edited Dec 27 '16 at 03:25

0

public class CrackService extends Service 

    {

         CrackView renderView;
         LayoutParams params;
         WindowManager wm;

       @Override

      public void onCreate()

     {


          params = new WindowManager.LayoutParams( WindowManager.LayoutParams.TYPE_SYSTEM_OVERLAY,
                        WindowManager.LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH,
                        PixelFormat.TRANSLUCENT);
                        params.gravity = Gravity.RIGHT | Gravity.TOP;

                        wm = (WindowManager) getSystemService(WINDOW_SERVICE);
                        wm.addView(renderView, params);

    }

    @Override

    public IBinder onBind(Intent intent) 
    {

            // TODO Auto-generated method stub
            return null;
    }

    }

edited Dec 27 '16 at 03:25

Charuක

12,953
5
50
88

answered Sep 12 '13 at 18:52

Sumit Kandoi

427
4
12

you can add a custom View in your Service class – Sumit Kandoi Sep 12 '13 at 18:53
I dont think that is enough to add view on lock screen. Did you test it? – tekkavi Sep 13 '13 at 09:27
recently i created an app based on this code which adds view on your phone screen – Sumit Kandoi Sep 13 '13 at 09:43
I said lock screen, not just phone screen. Anyway, thank for the effort. – tekkavi Sep 13 '13 at 09:57
it also add on lock screen don't worry – Sumit Kandoi Sep 13 '13 at 09:59

Flags to show a view on top of lock screen

3 Answers3

Linked