對於公司原來的一些程式碼，想對UIButton的點選事件做一部分修改，但是如果使用繼承出來的UIBtton來解決的話， 又要改大量的程式碼，這時候，使用runtime攔截替換髮送點選事件的方法可以迅速解決這個問題，超級給力！

不廢話，直接上程式碼

#import <UIKit/UIKit.h>

@interface UIControl (UIControl_XY)
@property (nonatomic, assign) NSTimeInterval cjr_acceptEventInterval;// 可以用這個給重複點選加間隔
@end

#import "UIControl+UIControl_XY.h"
 

#import <objc/runtime.h>

@interface UIControl()
@property (nonatomic, assign) NSTimeInterval cjr_acceptEventTime;
@end

@implementation UIControl (UIControl_XY)
static const char *UIControl_acceptEventInterval = "UIControl_acceptEventInterval";
static const char *UIControl_acceptEventTime = "UIControl_acceptEventTime"
 
;
- (NSTimeInterval )cjr_acceptEventInterval{
    return [objc_getAssociatedObject(self, UIControl_acceptEventInterval) doubleValue];
}

- (void)setCjr_acceptEventInterval:(NSTimeInterval)cjr_acceptEventInterval{
    objc_setAssociatedObject(self, UIControl_acceptEventInterval, @(cjr_acceptEventInterval), OBJC_ASSOCIATION_RETAIN_NONATOMIC);
}

- (NSTimeInterval
 
 )cjr_acceptEventTime{
    return [objc_getAssociatedObject(self, UIControl_acceptEventTime) doubleValue];
}

- (void)setCjr_acceptEventTime:(NSTimeInterval)cjr_acceptEventTime{
    objc_setAssociatedObject(self, UIControl_acceptEventTime, @(cjr_acceptEventTime), OBJC_ASSOCIATION_RETAIN_NONATOMIC);
}

+ (void)load{
    //獲取著兩個方法
    Method systemMethod = class_getInstanceMethod(self, @selector(sendAction:to:forEvent:));
    SEL sysSEL = @selector(sendAction:to:forEvent:);

    Method myMethod = class_getInstanceMethod(self, @selector(cjr_sendAction:to:forEvent:));
    SEL mySEL = @selector(cjr_sendAction:to:forEvent:);

    //新增方法進去
    BOOL didAddMethod = class_addMethod(self, sysSEL, method_getImplementation(myMethod), method_getTypeEncoding(myMethod));

    //如果方法已經存在了
    if (didAddMethod) {
        class_replaceMethod(self, mySEL, method_getImplementation(systemMethod), method_getTypeEncoding(systemMethod));
    }else{
        method_exchangeImplementations(systemMethod, myMethod);

    }

    //----------------以上主要是實現兩個方法的互換,load是gcd的只shareinstance，果斷保證執行一次

}

- (void)cjr_sendAction:(SEL)action to:(id)target forEvent:(UIEvent *)event{
    if (NSDate.date.timeIntervalSince1970 - self.cjr_acceptEventTime < self.cjr_acceptEventInterval) {
        return;
    }

    if (self.cjr_acceptEventInterval > 0) {
        self.cjr_acceptEventTime = NSDate.date.timeIntervalSince1970;
    }

    [self cjr_sendAction:action to:target forEvent:event];
}
@end

@interface ALViewController ()
@property (nonatomic, strong) UIButton *;
@end

@implementation AutoLayoutViewController
- (void)viewDidLoad {
    [super viewDidLoad];
    self.suggessBtn = [UIButton buttonWithType:UIButtonTypeCustom];
    [self.suggessBtn addTarget:self action:@selector(clickWithInterval:) forControlEvents:UIControlEventTouchUpInside];
    self.suggessBtn.cjr_acceptEventInterval = 5.0f;
}

- (void)clickWithInterval:(UIButton *)suButton{
    NSLog(@"打印出來－－"):
}