预期的标识符或'''在'{'标记之前

Question

我宣布:

CCSprite + DisableTouch.h文件

#import "cocos2d.h"

@interface CCSprite (DisableTouch) <CCTargetedTouchDelegate>  {

}

-(void)disableTouch;
-(void)enableTouch;

@end

并为CCSprite + DisableTouch.m文件

#import "CCSprite+DisableTouch.h"


@implementation CCSprite (DisableTouch)

-(BOOL)ccTouchBegan:(UITouch *)touch withEvent:(UIEvent *)event
{
    return YES;
}

-(void)disableTouch
{
    [[CCTouchDispatcher sharedDispatcher] addTargetedDelegate:self priority:-1000 swallowsTouches:YES];
}

-(void)enableTouch
{
    [[CCTouchDispatcher sharedDispatcher] removeDelegate:self];
}

@end

为什么我得到:Expected identifier or '(' before '{' token错误？我该怎么解决这个问题？

Answer 1

错误是通过在类别中添加{&}字符,因为类别不能包含iVar.

如果您需要具有类别的iVar,请考虑使用关联对象:

#import <objc/runtime.h>

...

objc_setAssociatedObject(self, @"iVar", @"value", OBJC_ASSOCIATION_ASSIGN);

...

id iVar = objc_getAssociatedObject(self, @"iVar");

有关关联对象的更多信息,请查看此处.