Merge pull request #509 from minggo/iss719

fixed #719: update java code to HelloLua & tests

HelloLua/android/src/org/cocos2dx/lib/Cocos2dxActivity.java

@@ -24,8 +24,7 @@ THE SOFTWARE.
 
 package org.cocos2dx.lib;
 
-
+import org.cocos2dx.application.R;
-import org.cocos2dx.hellolua.R;
 
 import android.app.Activity;
 import android.app.AlertDialog;
@@ -105,6 +104,10 @@ public class Cocos2dxActivity extends Activity{
         accelerometer.disable();
     }
 
+    public static void preloadBackgroundMusic(String path){
+    	backgroundMusicPlayer.preloadBackgroundMusic(path);
+    }
+    
     public static void playBackgroundMusic(String path, boolean isLoop){
     	backgroundMusicPlayer.playBackgroundMusic(path, isLoop);
     }

HelloLua/android/src/org/cocos2dx/lib/Cocos2dxMusic.java

@@ -48,6 +48,22 @@ public class Cocos2dxMusic {
 		initData();
 	}
 	
+	public void preloadBackgroundMusic(String path){
+		if ((mCurrentPath == null) || (! mCurrentPath.equals(path))){
+			// preload new background music
+			
+			// release old resource and create a new one
+			if (mBackgroundMediaPlayer != null){
+				mBackgroundMediaPlayer.release();				
+			}				
+
+			mBackgroundMediaPlayer = createMediaplayerFromAssets(path);
+			
+			// record the path
+			mCurrentPath = path;
+		}
+	}
+	
 	public void playBackgroundMusic(String path, boolean isLoop){
 		if (mCurrentPath == null){
 			// it is the first time to play background music
@@ -159,8 +175,8 @@ public class Cocos2dxMusic {
 	}
 	
 	public void setBackgroundVolume(float volume){
+	    this.mLeftVolume = this.mRightVolume = volume;
 		if (this.mBackgroundMediaPlayer != null){
-			this.mLeftVolume = this.mRightVolume = volume;
 			this.mBackgroundMediaPlayer.setVolume(this.mLeftVolume, this.mRightVolume);
 		}
 	}

tests/test.android/src/org/cocos2dx/lib/Cocos2dxActivity.java

@@ -106,6 +106,10 @@ public class Cocos2dxActivity extends Activity{
         accelerometer.disable();
     }
 
+    public static void preloadBackgroundMusic(String path){
+    	backgroundMusicPlayer.preloadBackgroundMusic(path);
+    }
+    
     public static void playBackgroundMusic(String path, boolean isLoop){
     	backgroundMusicPlayer.playBackgroundMusic(path, isLoop);
     }

tests/test.android/src/org/cocos2dx/lib/Cocos2dxMusic.java

@@ -48,6 +48,22 @@ public class Cocos2dxMusic {
 		initData();
 	}
 	
+	public void preloadBackgroundMusic(String path){
+		if ((mCurrentPath == null) || (! mCurrentPath.equals(path))){
+			// preload new background music
+			
+			// release old resource and create a new one
+			if (mBackgroundMediaPlayer != null){
+				mBackgroundMediaPlayer.release();				
+			}				
+
+			mBackgroundMediaPlayer = createMediaplayerFromAssets(path);
+			
+			// record the path
+			mCurrentPath = path;
+		}
+	}
+	
 	public void playBackgroundMusic(String path, boolean isLoop){
 		if (mCurrentPath == null){
 			// it is the first time to play background music