CODE EXAMPLE FOR JAVA

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