Dealloc给出了警告

Question

我正在练习制作一个简单的应用程序，用场景控制器（状态管理器）类来切换场景。

我创造了我的场景：

+(CCScene *) scene 
{ 
    CCScene *scene = [CCScene node]; 

    GameMenu *layer = [GameMenu node]; 

    [scene addChild: layer]; 

    return scene; 
} 

-(id)init{ 
    if ((self = [super init])){ 
     self.isTouchEnabled = YES; 
     CGSize winSize = [[CCDirector sharedDirector] winSize]; 
     gameMenuLabel = [CCLabelTTF labelWithString:@"This is the Main Menu. Click to Continue" fontName:@"Arial" fontSize:13]; 
     gameMenuLabel.position = ccp(winSize.width/2, winSize.height/1.5); 
     [self addChild:gameMenuLabel]; 
    } 

    return self; 
} 

-(void)ccTouchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{ 
    NSLog(@"ccTouchesBegan: called from MainMenu object"); 
    [[StateManager sharedStateManager] runSceneWithID:kGamePlay]; 

} 

-(void)dealloc{ 
    [gameMenuLabel release]; 
    gameMenuLabel = nil; 

    [super dealloc]; 
} 

@end 

但我不断收到这样的警告：https://dl.dropbox.com/u/1885149/Screen%20Shot%202012-10-06%20at%205.23.43%20PM.png（可能没有太大的帮助，但想我会链接截图

我认为这事做。如果我在我的场景中注释dealloc，我没有得到这个警告。任何帮助将不胜感激，谢谢

这是我的statemanager切换场景的方法：

-(void)runSceneWithID:(SceneTypes)sceneID { 
    SceneTypes oldScene = currentScene; 
    currentScene = sceneID; 
    id sceneToRun = nil; 
    switch (sceneID) { 
     case kSplashScene: 
      sceneToRun = [SplashScene node]; 
      break; 

     case kGameMenu: 
      sceneToRun = [GameMenu node]; 
      break; 
     case kGamePlay: 
      sceneToRun = [GamePlay node]; 
      break; 
     case kGameOver: 
      sceneToRun = [GameOver node]; 
      break; 

     default: 
      CCLOG(@"Unknown ID, cannot switch scenes"); 
      return; 
      break; 
    } 
    if (sceneToRun == nil) { 
     // Revert back, since no new scene was found 
     currentScene = oldScene; 
     return; 
    }  
    if ([[CCDirector sharedDirector] runningScene] == nil) { 
     [[CCDirector sharedDirector] runWithScene:sceneToRun]; 
    } else { 
     [[CCDirector sharedDirector] replaceScene:sceneToRun]; 
    } 
} 

Answer 1

你应该给一个保留属性gameMenuLabel这样

@property (nonatomic, retain) CCLabelTTF* gameMenuLabel; //in .h file 

而且写这个....

self.gameMenuLabel = [CCLabelTTF labelWithString:@"This is the Main Menu. Click to Continue" fontName:@"Arial" fontSize:13]; 

，而不是这个......

gameMenuLabel = [CCLabelTTF labelWithString:@"This is the Main Menu. Click to Continue" fontName:@"Arial" fontSize:13]; 

问题在于你正在向gameMenuLabel提供一个自动释放对象，然后再次释放该对象在dealloc节中。因此，崩溃。