public void showPlayerElement(final boolean flag) {
int count = adapter.getItemCount();
if (!flag) {
if (count <= COUNT_FRAGMENT) return;
adapter.delete(4);
} else {
if (count > COUNT_FRAGMENT) return;
adapter.add(
4,
new NavDrawerItem(
R.drawable.ic_headset_grey,
getResources().getString(R.string.tab_now_playing),
NavDrawerItem.Type.Primary));
}
}
