//// UIButton+touch.h// LiqForDoctors#import#define defaultInterval .5 //默認(rèn)時(shí)間間隔@interface UIButton (touch)/**設(shè)置點(diǎn)擊時(shí)間間隔*/@property (nonatomic, assign) NSTimeInterval timeInterval;@end

//// UIButton+touch.m// LiqForDoctors//#import "UIButton+touch.h"@interface UIButton()/**bool 類型 YES 不允許點(diǎn)擊 NO 允許點(diǎn)擊 設(shè)置是否執(zhí)行點(diǎn)UI方法*/@property (nonatomic, assign) BOOL isIgnoreEvent;@end@implementation UIButton (touch)+ (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);  //將 methodB的實(shí)現(xiàn) 添加到系統(tǒng)方法中 也就是說 將 methodA方法指針添加成 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 說明 本類中不存在methodB 所以此時(shí)必須將方法b的實(shí)現(xiàn)指針換成方法A的，否則 b方法將沒有實(shí)現(xiàn)。  if (isAdd) {   class_replaceMethod(self, selB, method_getImplementation(methodA), method_getTypeEncoding(methodA));  }else{   //添加失敗了 說明本類中 有methodB的實(shí)現(xiàn)，此時(shí)只需要將 methodA和methodB的IMP互換一下即可。   method_exchangeImplementations(methodA, methodB);  } });}- (NSTimeInterval)timeInterval{ return [objc_getAssociatedObject(self, _cmd) doubleValue];}- (void)setTimeInterval:(NSTimeInterval)timeInterval{ objc_setAssociatedObject(self, @selector(timeInterval), @(timeInterval), OBJC_ASSOCIATION_RETAIN_NONATOMIC);}//當(dāng)我們按鈕點(diǎn)擊事件 sendAction 時(shí) 將會(huì)執(zhí)行 mySendAction- (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];  } } //此處 methodA和methodB方法IMP互換了，實(shí)際上執(zhí)行 sendAction；所以不會(huì)死循環(huán) self.isIgnoreEvent = YES; [self mySendAction:action to:target forEvent:event];}//runtime 動(dòng)態(tài)綁定 屬性- (void)setIsIgnoreEvent:(BOOL)isIgnoreEvent{ // 注意BOOL類型 需要用OBJC_ASSOCIATION_RETAIN_NONATOMIC 不要用錯(cuò)，否則set方法會(huì)賦值出錯(cuò) objc_setAssociatedObject(self, @selector(isIgnoreEvent), @(isIgnoreEvent), OBJC_ASSOCIATION_RETAIN_NONATOMIC);}- (BOOL)isIgnoreEvent{ //_cmd == @select(isIgnore); 和set方法里一致 return [objc_getAssociatedObject(self, _cmd) boolValue];}- (void)resetState{ [self setIsIgnoreEvent:NO];}@end