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我通常在执行原始项目中的任务之前在“虚拟”上进行测试,现在同样测试了“背景音乐的音量设置”,即在 cocos2d-android 项目中增加和减少音乐的音量,但这适用于“ dummy”项目不在原始项目中,我比较了代码,但不明白为什么它不起作用:(这是代码。

public class SplashScene extends CCLayer {

public SplashScene() {
    super();
    // TODO Auto-generated constructor stub
    Global.createSprite(this, "splash_320x480.png", 160, 240);
    schedule("gameBegin", 5);
    Context context = CCDirector.sharedDirector().getActivity();
    SoundEngine.sharedEngine().preloadEffect(context, R.raw.pew_pew_lei);
    SoundEngine.sharedEngine().playSound(context, R.raw.rock, true);
}   

MainActivity.java

@Override
public void onWindowFocusChanged(boolean hasFocus) {
    // TODO Auto-generated method stub
    if (hasFocus) {
        Global.m_SoundEngine.setSoundVolume(1.0f);
        Global.m_SoundEngine.setEffectsVolume(1.0f);
    } else {
        Global.m_SoundEngine.setSoundVolume(0.0f);
        Global.m_SoundEngine.setEffectsVolume(0.0f);
    }
    super.onWindowFocusChanged(hasFocus);
}
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