cocos2d-iphone - SimpleAudioEngine Cocos2d 泄漏内存

Question

我正在运行 Instruments，它表明 SimpleAudioEngine 正在泄漏内存。附上截图。尽管屏幕截图仅显示一个实例，但内存泄漏是多次的。

此外，有时它指向以下实现(我的代码):

-(void) preloadGameSounds
{
    // pre load the background sound 

    [[SimpleAudioEngine sharedEngine] preloadEffect:@"farm_background_sound.mp3"];

    // pre load the game sounds 

    [[SimpleAudioEngine sharedEngine] preloadEffect:@"chickenlayingegg.mp3"];

    // setup ding sound 
    [[SimpleAudioEngine sharedEngine] preloadEffect:@"ding.caf"];

    // egg pop sound 
    [[SimpleAudioEngine sharedEngine] preloadEffect:@"baloonpop.wav"];

    // preload applause sound 
    [[SimpleAudioEngine sharedEngine] preloadEffect:@"applause.mp3"];

    // wrong answer sound 
    [[SimpleAudioEngine sharedEngine] preloadEffect:@"wrong_answer_sound.wav"];

}

更改场景时，我还使用以下实现卸载声音:

-(void) unloadSoundEffects 
{

    [[SimpleAudioEngine sharedEngine] unloadEffect:@"applause.mp3"];
    //[[SimpleAudioEngine sharedEngine] unloadEffect:@"wrong_answer_sound.wav"];
    [[SimpleAudioEngine sharedEngine] unloadEffect:@"ding.caf"];

    [[SimpleAudioEngine sharedEngine] unloadEffect:@"chickenlayingegg.mp3"];
}

此内存泄漏使游戏的 FPS 变低并使游戏速度越来越慢!

Answer 1

来自cocosdenshion FAQ :

What should I retain/release?

SimpleAudioEngine, CDAudioManager andCDSoundEngine APIs are all accessedthrough a shared singleton instance.This is a common pattern that is usedthroughout Cocoa Touch and cocos2d.The shared instance should not beretained or released.

If you need to completely shut downCocosDenshion and free all resourcesit was using then call the end methodon the highest level API you areusing. For example if you are usingSimpleAudioEngine then just call[SimpleAudioEngine end].

If you use CDSoundSource objects youmust obtain them through one of thefactory methods such assoundSourceForFile. The CDSoundSourcethat is returned is autoreleased, thatmeans if you want to use it outsidethe scope of the current method youmust retain it. If you retain aCDSoundSource you should release itwhen you are finished using it.