iphone - 'NSInvalidArgumentException'，原因：'-[HelloWorldLayer starGame:]：无法识别的选择器发送到实例 0x96764d0'

Question

我在 helloworld 层中有按钮。当我单击按钮时，我需要替换 gmaelayer 场景。但是当我点击按钮时，我得到了错误。

代码：

 - (id) init
    {
        if ((self = [super initWithColor:ccc4(255,255,255,255)])) {

          CGSize winSize0 = [[CCDirector sharedDirector] winSize];


            CCMenuItem *starMenuItem = [CCMenuItemImage
                                        itemFromNormalImage:@"player.png" selectedImage:@"player.png"
                                        target:self selector:@selector(starGame:)];

            CCMenu *starMenu = [CCMenu menuWithItems:starMenuItem,nil];

            starMenu.position = ccp(winSize0.width/2  , 25);
            [starMenu alignItemsHorizontally];
            [self addChild:starMenu];
}
     return self;
    }


    -(void)startGame:(id)sender{

       [[CCDirector sharedDirector] replaceScene:[GameLayer scene]];


    }

Answer 1

你的选择器方法是错误的。

CCMenuItem *starMenuItem = [CCMenuItemImage
                                        itemFromNormalImage:@"player.png" selectedImage:@"player.png"
                                        target:self selector:@selector(starGame:)];

代替

CCMenuItem *starMenuItem = [CCMenuItemImage
                                        itemFromNormalImage:@"player.png" selectedImage:@"player.png"
                                        target:self selector:@selector(startGame:)];