import org.andengine.util.call.Callable; //导入依赖的package包/类
public void loadMusic() throws IOException {
    final String baseMusicPath = "mfx/";
    final String musicFile = "lepeltheme.mod";

    SoundFactory.setAssetBasePath(baseMusicPath);
    mMenuClickSound = SoundFactory.createSoundFromAsset(mContext.getSoundManager(), mContext, "fwapfwap.ogg");
    mExplosionSound = SoundFactory.createSoundFromAsset(mContext.getSoundManager(), mContext, "explosion.ogg");
    mExplosionSound.setVolume(0.2f);

    final ModPlayer mModPlayer = ModPlayer.getInstance();

    File musicDir = new File(mContext.getFilesDir(), baseMusicPath);

    if (!musicDir.isDirectory())
        musicDir.mkdirs();

    final File musicSrc = new File(musicDir, musicFile);

    if (musicSrc.isFile()) {
        ((GameActivity)mContext).onModMusicLoaded(mModPlayer, musicSrc);
    } else {
        mContext.runOnUiThread(new Runnable() {
            @Override
            public void run() {
                ActivityUtils.doAsync(mContext, "Loading music", "Please wait...", new Callable<Void>() {
                    @Override
                    public Void call() throws Exception {
                        FileUtils.copyToInternalStorage(mContext, baseMusicPath + musicFile, baseMusicPath + musicFile);
                        return null;
                    }
                }, new Callback<Void>() {
                    @Override
                    public void onCallback(Void pCallbackValue) {
                        ((GameActivity)mContext).onModMusicLoaded(mModPlayer, new File(baseMusicPath, musicFile));
                    }
                });
            }
        });
    }
}
 

import org.andengine.util.call.Callable; //导入依赖的package包/类
public static final <T> void doAsync(final Context pContext, final int pTitleResourceID, final int pMessageResourceID, final Callable<T> pCallable, final Callback<T> pCallback) {
	ActivityUtils.doAsync(pContext, pTitleResourceID, pMessageResourceID, pCallable, pCallback, null, false);
}
 

import org.andengine.util.call.Callable; //导入依赖的package包/类
public static <T> void doAsync(final Context pContext, final int pTitleResourceID, final int pMessageResourceID, final Callable<T> pCallable, final Callback<T> pCallback) {
	ActivityUtils.doAsync(pContext, pTitleResourceID, pMessageResourceID, pCallable, pCallback, null, false);
}