change color text of system bar android code example

Example 1: statusbar text color android

getWindow().getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR);//  set status text dark
getWindow().setStatusBarColor(ContextCompat.getColor(BookReaderActivity.this,R.color.white));// set status background white

Example 2: statusbar text color android

getWindow().setStatusBarColor(ContextCompat.getColor(BookReaderActivity.this, R.color.black));
View decorView = getWindow().getDecorView(); //set status background black 
decorView.setSystemUiVisibility(decorView.getSystemUiVisibility() & ~View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR); //set status text  light