最近測試總說由於手速太快，點選按鈕，連續push了兩次頁面。為了防止按鈕短時間內的重複點選，就用runtime實現防止按鈕的重複點選。

標頭檔案

#import <UIKit/UIKit.h>

#define defaultInterval 0.1  //預設時間間隔

@interface UIButton (YQFixMultiClick)
@property (nonatomic, assign) NSTimeInterval timeInterval; // 用這個給重複點選加間隔
@property (nonatomic, assign) BOOL isIgnoreEvent; //YES 不允許點選   NO 允許點選
 

@end

.m檔案

#import "UIButton+YQFixMultiClick.h"

@implementation UIButton (YQFixMultiClick)
- (NSTimeInterval)timeInterval {
    return [objc_getAssociatedObject(self, _cmd) doubleValue];
}

- (void)setTimeInterval:(NSTimeInterval)timeInterval {
    objc_setAssociatedObject(self, @selector(timeInterval), @(timeInterval), OBJC_ASSOCIATION_RETAIN_NONATOMIC);
}

- (BOOL
 
)isIgnoreEvent {
    return [objc_getAssociatedObject(self, _cmd) boolValue];
}

- (void)setIsIgnoreEvent:(BOOL)isIgnoreEvent {
    objc_setAssociatedObject(self, @selector(isIgnoreEvent), @(isIgnoreEvent), OBJC_ASSOCIATION_RETAIN_NONATOMIC);
}

- (void)resetIsIgnoreEvent{
    [self setIsIgnoreEvent:NO
 
];
}

+ (void)load {
    static dispatch_once_t onceToken;

    dispatch_once(&onceToken, ^{
        SEL originSel = @selector(sendAction:to:forEvent:);
        SEL newSel = @selector(newSendAction:to:forEvent:);

        Method originMethod = class_getInstanceMethod(self, originSel);
        Method newMethod = class_getInstanceMethod(self, newSel);
        BOOL isAdd = class_addMethod(self, originSel, method_getImplementation(newMethod), method_getTypeEncoding(newMethod));
        if (isAdd) {
            class_replaceMethod(self, newSel, method_getImplementation(originMethod), method_getTypeEncoding(originMethod));
        }else {
            method_exchangeImplementations(originMethod, newMethod);
        }
    });
}

- (void)newSendAction:(SEL)action to:(id)target forEvent:(UIEvent *)event {
    if ([NSStringFromClass([self class]) isEqualToString:@"UIButton"]) {
        self.timeInterval = (self.timeInterval == 0) ? defaultInterval : self.timeInterval;

        if (self.isIgnoreEvent){
            return;
        }else if (self.timeInterval > 0.1){
            [self performSelector:@selector(resetIsIgnoreEvent) withObject:nil afterDelay:self.timeInterval];
        }
    }

    self.isIgnoreEvent = YES;
    [self newSendAction:action to:target forEvent:event];
}
@end

這樣做有個問題就是，所有按鈕都不能快速重複點選了，如果想實現部分按鈕不能重複點選，可以自定義個Button繼承UIButton，讓後給自定義Button增加分類