Android dialog over lock screen

Question

I am design a apps about alarm clock.

How can I display a dialog even the phone is locked?

I don't want the phone to be unlock. I just want it to display some text on the phone. User need to unlock the phone by themselves on hand for more information.

It is not necessary to use dialog. All I want is just some text to be display.

Thanks you!

score 10 · Accepted Answer · answered Aug 29 '13 at 07:42

10

on your activity, add those flags:

public void onAttachedToWindow() {
    Window window = getWindow();
    window.addFlags(WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON
            | WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED
            | WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON
            | WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD);
}

answered Aug 29 '13 at 07:42

android developer

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When to excute this? onstart? Can this be use in service? – user1874453 Aug 29 '13 at 07:49
it's a method, inside your activity. it overrides something your activity already has. about the service, no. – android developer Aug 29 '13 at 07:57
This doesn't work on android 5 or newer – trampster Sep 28 '16 at 04:36
@trampster Can you please show a tiny, minimal, sample project? Maybe on Github ? I'd like to try it out and see how to change it. – android developer Sep 28 '16 at 05:20
@trampster I can't confirm your issue. Tested on Android 7. – android developer Oct 01 '16 at 08:03

Android dialog over lock screen

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