Enable fullscreen in android app (2022)

In older phones making fullscreen apps were easier but in new phones you need to do some extra steps. I'm going to teach you those steps. 

Immersive mode

Normal app

Normal app fullscreen

This is normal app in fullscreen, it leaves some space in place of status bar and navigation bar is also taking up some space.

You can do some steps shown in video to make it real fullscreen or so called "immersive mode".

You'll find all used codes in following PDF file  get it from Google drive.

Download PDF : Fullscreen app in Android.pdf