我试图像这样动态更改CCMenuItemImage的图像:

- (void)playOrPauseMusic {
    MPMusicPlayerController *musicPlayer = [MPMusicPlayerController applicationMusicPlayer];
    CCSprite *newSprite;
    if (itemImage.tag == 50) {
        [musicPlayer pause];
        newSprite = [CCSprite spriteWithFile:@"Image1.png"];
        playstopButton.tag = 51;

    } else {
        [musicPlayer play];
        newSprite = [CCSprite spriteWithFile:@"Image2.png"];
        itemImage.tag = 50;
    }
    CGPoint scale6 = CGPointMake(164 / newSprite.contentSize.width,
                         48 / newSprite.contentSize.height);

    [newSprite setScaleX:scale6.x];
    [newSprite setScaleY:scale6.y];
    [itemImage setNormalImage:newSprite];
    newSprite.color = ccc3(128, 128, 128);
    [itemImage setDisabledImage:newSprite];
}


问题是,每当调用此方法时,就会发生崩溃:

*** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'child already added. It can't be added again'


我在这里做错什么了吗?

谢谢!

最佳答案

好了,在设置NormalImage之后,newSprite对象具有一个父对象(imageItem对象)。当您使用SAME newSprite对象设置setDisabledImage时,coco可能会抱怨,因为sprite对象已经在某个CCNode层次结构中(即nil!= newSprite.parent)。

您可能要创建一个newSpriteEnabled对象和一个newSpriteDisabled对象,然后将颜色设置为newSpriteDisabled,然后从那里获取它。

关于ios - (Cocos2D)子级已经添加CCMenuItemImage吗?,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/8782816/

10-09 13:54