如何在不同的類中訪問CCMenu的標籤

Question

//class1 
    - (void)starButtonTapped:(CCMenuItem*)sender { 
     switch(sender.tag) { 
      case 1: NSLog(@"Pressed 1"); 
       class2 *myFood = [[class2 alloc]init]; 
       [self addChild:myFood]; 
       break; 


     } 
    } 

    //class2 
     -(id) init 
     { 
      if((self=[super init])) { 
       //ccmenu 
       CCMenuItem *food1 = [CCMenuItemImage itemFromNormalImage:@"Food0001.png" selectedImage:@"Food0002.png" target:self selector:@selector(food:)]; 
     CCMenuItem *food2 = [CCMenuItemImage itemFromNormalImage:@"Food0003.png" selectedImage:@"Food0004.png" target:self selector:@selector(food:)]; 
       food1.tag = 1; 
food2.tag =2 
     CCMenu *menu1 = [CCMenu menuWithItems:food1,food2, nil]; 
       [self addChild:menu1]; 
      } 
      return self; 
     } 

     -(void)food:(CCMenuItem*)sender{ 
      switch (sender.tag) { 
       case 1: 
        NSLog(@"food1"); 
        //go back to class2 and add food1 sprite 

        break; 
       case 2: 
        NSLog(@"food1"); 
        //go back to class2 and add food2 sprite 

        break; 

       default: 
        break; 
      } 
     } 

在按下按鈕後，它將從class1開始，它將class2的子項添加到另一個菜單。 我如何刪除孩子class2，然後根據我在class2中按下的按鈕添加不同的精靈？感謝幫助。是否有可能在class1中的class2中使用標籤？

Answer 1

只需通過下面的代碼。

---

 //class2 
    -(id) init 
    { 
     if((self=[super init])) { 
      //ccmenu 
      CCMenuItem *food1 = [CCMenuItemImage itemFromNormalImage:@"Food0001.png" selectedImage:@"Food0002.png" target:self selector:@selector(food:)]; 
    CCMenuItem *food2 = [CCMenuItemImage itemFromNormalImage:@"Food0003.png" selectedImage:@"Food0004.png" target:self selector:@selector(food:)]; 
      food1.tag = 1; 
      food2.tag =2 
     // menu1 is instance variable (declared in class2 interface) 
     menu1 = [CCMenu menuWithItems:food1,food2, nil]; 
      [self addChild:menu1]; 
     } 
     return self; 
    } 

    -(void)food:(CCMenuItem*)sender{ 
     switch (sender.tag) { 
      case 1: 
       NSLog(@"food1"); 
       //go back to class2 and add food1 sprite 
       [self removeChild:menu1 cleanup:YES]; 
       CCSprite *spriteFood = [CCSprite spriteWithFile:@"food1.png"]; 
       [self addChild:]; 
       break; 
      case 2: 
       NSLog(@"food2"); 
       //go back to class2 and add food2 sprite 
       [self removeChild:menu1 cleanup:YES]; 
       CCSprite *spriteFood = [CCSprite spriteWithFile:@"food2.png"]; 
       [self addChild:spriteFood]; 
       break; 

      default: 
       break; 
     } 
    }