从ANDENGINE中的另一个Activity调用时如何暂停活动

Question

我在ANDENGINE中有两项活动。一个是ACT_1，第二个是ACT_2。现在，我的ACT_1是一个呼叫ACT_2的呼叫者活动。

ACT_1是我的SplashScreen Loader活动。现在从ACT_1调用ACT_2后，我加载了一些资源和声音。它的工作正常。现在有一种状态，当有呼叫时，声音/音乐应停止，但活动的其他状态应保持不变。例如，如果acitvity是关于某些益智游戏，那么随叫随到的益智游戏状态保持不变，声音应暂停并在gameresume上恢复。我在ACT_2中尝试了OnPauseGame和OnResumeGame，但它在ACT_2中不起作用。但是当我在ACt_1中调用OnResume和OnPause时，它会调用这些函数。但问题是我的ACT_2再次开始。

ACT_1活动：

public void onCreateResources(OnCreateResourcesCallback pOnCreateResourcesCallback) throws Exception {

    ACT_2 = new PUZZLE(this, this.mEngine, this.mCamera);
    ACT_2.loadSplashSceneResources();
    con=this.getApplicationContext();

    pOnCreateResourcesCallback.onCreateResourcesFinished();
}

public void onCreateScene(OnCreateSceneCallback pOnCreateSceneCallback) throws Exception {

    pOnCreateSceneCallback.onCreateSceneFinished(eating.createSplashScene());

}

public void onPopulateScene(Scene pScene, OnPopulateSceneCallback pOnPopulateSceneCallback) throws Exception {
    // TODO Auto-generated method stub
    mEngine.registerUpdateHandler(new TimerHandler(1f, new ITimerCallback() {
        public void onTimePassed(final TimerHandler pTimerHandler) {
            mEngine.unregisterUpdateHandler(pTimerHandler);
            ACT_2.loadGameSceneResources();
            ACT_2.createGameScenes();
            ACT_2.setCurrentScene();
        }
    }));

    pOnPopulateSceneCallback.onPopulateSceneFinished();

}


@Override
public void onResumeGame() {
    Log.i("herewwwww","Resume");
    super.onResumeGame();
    //super.mEngine.start();

    //super.mEngine.getMusicManager().setMasterVolume(16);
    //super.mEngine.getMusicManager().setMasterVolume(16);

    Log.i("Volu",""+super.mEngine.getMusicManager().getMasterVolume());

}

@Override
public void onPauseGame() {
    Log.i("herewwwww","Pause");

    super.onPauseGame();

    //finish();

}

ACT_2

public void onResumeGame() {
    Log.i("act_2","resume");
    activity.onResumeGame();
    this.engine.start();

    if(!back_music.isPlaying())
        back_music.play();


}

public void onPauseGame() {
    Log.i("act_2","pause");
    activity.onPauseGame();
    if(back_music.isPlaying())
        back_music.pause();
}