修改Cocos2dxMusic.java文件中的playBackgroundMusic函数

public void playBackgroundMusic(final String pPath,final boolean isLoop) {
		if (this.mCurrentPath == null) {
			// it is the first time to play background music or end() was called
			this.mBackgroundMediaPlayer = this.createMediaplayer(pPath);
			this.mCurrentPath = pPath;
		} else {
			if (!this.mCurrentPath.equals(pPath)) {
				// play new background music

				// release old resource and create a new one
				if (this.mBackgroundMediaPlayer != null) {
					this.mBackgroundMediaPlayer.release();
				}
				this.mBackgroundMediaPlayer = this.createMediaplayer(pPath);

				// record the path
				this.mCurrentPath = pPath;
			}
		}

		if (this.mBackgroundMediaPlayer == null) {
			Log.e(Cocos2dxMusic.TAG,"playBackgroundMusic: background media player is null");
		} else {
			// if the music is playing or paused,stop it
			boolean isStop = false;
			if(mBackgroundMediaPlayer.isPlaying()){
			isStop = true;
			this.mBackgroundMediaPlayer.stop();
			}

			this.mBackgroundMediaPlayer.setLooping(isLoop);

			try {
				Log.e(Cocos2dxMusic.TAG,"playBackgroundMusic");
				if(isStop)
					this.mBackgroundMediaPlayer.prepare();
				this.mBackgroundMediaPlayer.seekTo(0);
				this.mBackgroundMediaPlayer.start();
				this.mPaused = false;
			} catch (final Exception e) {
				Log.e(Cocos2dxMusic.TAG,"playBackgroundMusic: error state");
			}
		}
	}