一、.使用runtime解决

创建按钮的分类

.声明文件(.h)

#define defaultInterval .5//默认时间间隔

@interface UIButton (UIbutton_Delay)

@property(nonatomic,assign)NSTimeInterval timeInterval;//用这个给重复点击加间隔

@property(nonatomic,assign)BOOL isIgnoreEvent;//YES不允许点击NO允许点击

@end

.实现文件(.m)

#import

@implementation UIButton (UIbutton_Delay)

- (NSTimeInterval)timeInterval{

return[objc_getAssociatedObject(self,_cmd)doubleValue];

}

- (void)setTimeInterval:(NSTimeInterval)timeInterval{

objc_setAssociatedObject(self,@selector(timeInterval),@(timeInterval),OBJC_ASSOCIATION_RETAIN_NONATOMIC);

}

//runtime动态绑定属性

- (void)setIsIgnoreEvent:(BOOL)isIgnoreEvent{

objc_setAssociatedObject(self,@selector(isIgnoreEvent),@(isIgnoreEvent),OBJC_ASSOCIATION_RETAIN_NONATOMIC);

}

- (BOOL)isIgnoreEvent{

return[objc_getAssociatedObject(self,_cmd)boolValue];

}

- (void)resetState{

[self setIsIgnoreEvent:NO];

}

+ (void)load{

static dispatch_once_t onceToken;

dispatch_once(&onceToken, ^{

SEL selA =@selector(sendAction:to:forEvent:);

SEL selB =@selector(mySendAction:to:forEvent:);

Method methodA =class_getInstanceMethod(self, selA);

Method methodB =class_getInstanceMethod(self, selB);

//将methodB的实现添加到系统方法中也就是说将methodA方法指针添加成方法methodB的返回值表示是否添加成功

BOOL isAdd =class_addMethod(self, selA,method_getImplementation(methodB),method_getTypeEncoding(methodB));

//添加成功了说明本类中不存在methodB所以此时必须将方法b的实现指针换成方法A的，否则b方法将没有实现。

if(isAdd) {

class_replaceMethod(self, selB,method_getImplementation(methodA),method_getTypeEncoding(methodA));

}else{

//添加失败了说明本类中有methodB的实现，此时只需要将methodA和methodB的IMP互换一下即可。

method_exchangeImplementations(methodA, methodB);

}

});

}

- (void)mySendAction:(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){

[self performSelector:@selector(resetState) withObject:nil afterDelay:self.timeInterval];

}

}

//此处methodA和methodB方法IMP互换了，实际上执行sendAction；所以不会死循环

self.isIgnoreEvent=YES;

[self mySendAction:action to:target forEvent:event];

}

二、使用按钮的enable属性解决

三、每次在点击时先取消之前的操作

[[self class] cancelPreviousPerformRequestsWithTarget:self selector:@selector(buttonClicked:) object:sender];

[sel fperformSelector:@selector(buttonClicked: )withObject:sender afterDelay:0.2f];