Android: Keep screen on [duplicate]

Question

This question already has answers here:

Correct method for setKeepScreenOn / FLAG_KEEP_SCREEN_ON (5 answers)

Closed 8 years ago.

I try to set the screen to always on however I cant figure out how to do it within a fragment. I have tried to get access to the ViewPager but it returns with a null value. I want the screen to be on for the whole application but it should be able to be changed by the user within the settings of the app.

Here is my code from within my fragment:

private void setIsAlwaysOn(boolean b)
{
    ViewPager pager = (ViewPager)getView().findViewById(R.id.pager);
    pager.setKeepScreenOn(b);

    sharePropertiesEditor.putBoolean(sp_alwaysOn, b);
    sharePropertiesEditor.commit();
}

I get a nullpointerexception at line 4 of the visible code above.

Answer 1

Yeah. Can't you use this?

getActivity().getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);

For Kotlin, use:

activity?.window?.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON)