return; if (next == null || prev == null) return; if (next.isEnabled()) next.setVisibility(View.VISIBLE); if (prev.isEnabled()) prev.setVisibility(View.VISIBLE); handler.removeCallbacks(hideControlsRunnable); handler.postDelayed(hideControlsRunnable, 1500); isShowingControls = true; } private void hideControls() { if (next == null || prev == null) return;