How to disable screen lock sound in android app?

Question

I have one android application so

1. my application is running foreground
2. and I click power button
3. Beep sound comes
4. my phone goes into sleep
5. When i again click power button
6. my phone wake up
7. I unlock my phone
8. again Beep sound comes
9. screen goes to my application screen

Here i do not want that beep in case 3 and case 8 so how can i do that from my application code?

Edit: I know this can be done by from setting->sound->screen lock sound checkbox but i need to do this just for my app only no matter whats general setting for screen lock sound is selected.

Answer 1

Put below code in your android app where you want to turn off the screen lock sound.

If you using Activity use below code :

Settings.System.putInt(getContentResolver(), "lockscreen_sounds_enabled",
                            0);

If you using Fragment use below code :

Settings.System.putInt(getActivity(),getContentResolver(), "lockscreen_sounds_enabled",
                            0);

To enable it again you can set 1 instead of 0.

Thanks