OC方法执行间隔，解决快速点击多次执行等问题

Button,UIBarButtonItem等快速点击导致多次执行，或者使方法两次调用之间需要间隔一定时间才执行。

#define XCMethodInterval \
static const char * lastPerformDateKey = __FUNCTION__;\
NSDate * lastPerformDate = objc_getAssociatedObject(self,lastPerformDateKey);\
if (lastPerformDate) {\
    if ([lastPerformDate isKindOfClass:[NSDate class]]) {\
        NSInteger t = fabs([lastPerformDate timeIntervalSinceNow]*1000);\
        LOG(@"%ld",(long)t);\
        if (t<1500) {\
            return;\
        }\
    }\
}\
objc_setAssociatedObject(self,lastPerformDateKey, [NSDate date], OBJC_ASSOCIATION_RETAIN);