ini fik

//jika hanya ganti warna background
Window window;

window = this.getWindow();
        window.setStatusBarColor(this.getResources().getColor(R.color.colorPrimary));


//jika ganti warna background menjadi putih dan icon jadi hitam
Window window;

window = this.getWindow();
        window.setStatusBarColor(this.getResources().getColor(R.color.colorBackground));
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            window.getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR);
        }