From 211e37866e581612a8c29b304b28f0e64a023ba0 Mon Sep 17 00:00:00 2001
From: Recrown <yunyangdeng@gmail.com>
Date: Wed, 22 Aug 2018 19:58:22 -0500
Subject: [PATCH] added a few synchronizing points

---
 .../zero1hd/rhythmbullet/audio/MusicController.java  |  1 +
 .../desktop/screens/main/MusicSelectionPage.java     | 12 +++++++-----
 2 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/core/src/zero1hd/rhythmbullet/audio/MusicController.java b/core/src/zero1hd/rhythmbullet/audio/MusicController.java
index 4f70ba8..fbcf44d 100755
--- a/core/src/zero1hd/rhythmbullet/audio/MusicController.java
+++ b/core/src/zero1hd/rhythmbullet/audio/MusicController.java
@@ -153,6 +153,7 @@ public class MusicController extends Observable implements OnCompletionListener,
 		musicHeader = null;
 		if (music != null) {
 			music.dispose();
+			music = null;
 		}
 		if (currentlyPlayingIndex < 0) {
 			currentlyPlayingIndex = musicList.getTotal()-1;
diff --git a/desktop/src/zero1hd/rhythmbullet/desktop/screens/main/MusicSelectionPage.java b/desktop/src/zero1hd/rhythmbullet/desktop/screens/main/MusicSelectionPage.java
index 02be40d..a0b54b7 100755
--- a/desktop/src/zero1hd/rhythmbullet/desktop/screens/main/MusicSelectionPage.java
+++ b/desktop/src/zero1hd/rhythmbullet/desktop/screens/main/MusicSelectionPage.java
@@ -175,7 +175,7 @@ public class MusicSelectionPage extends Page implements Observer {
 		super.act(delta);
 	}
 	
-	private void updateList(float delta) {
+	private synchronized void updateList(float delta) {
 		if (mc.getMusicList().isSearched()) {
 			if (mc.getMusicList().getTotal() != 0) {
 				if (selectables.size() != mmc.size()) {
@@ -231,10 +231,12 @@ public class MusicSelectionPage extends Page implements Observer {
 				selectables.setChecked(mc.getCurrentMusicFileHandle());
 			}
 		} else if (o == mc.getMusicList()) {
-			if (arg == mc.getMusicList().states.LOADING) {
-				vGroup.clear();
-				selectables.clear();
-				musicInfoTable.setToDefault();
+			synchronized (this) {
+				if (arg == mc.getMusicList().states.LOADING) {
+					vGroup.clear();
+					selectables.clear();
+					musicInfoTable.setToDefault();
+				}
 			}
 		}
 	}