Override home button in android/ Disable home button in android/Stay on your activity while clicking home button in android @Override public void onAttachedToWindow(){ Log. i ( "TESTE" , "onAttachedToWindow" ); this .getWindow().setType(WindowManager.LayoutParams. TYPE_KEYGUARD ); super .onAttachedToWindow(); } public boolean onKeyDown( int keyCode, KeyEvent event){ if (keyCode == KeyEvent. KEYCODE_HOME ) { Log. i ( "TESTE" , "BOTAO HOME" ); return true ; } return super .onKeyDown(keyCode, event); } See more Block incoming calls in android Screen off and on in android Answer incoming calls
If you are a beginner , then this blog will help you to dive into the basics.