/*
**防止button快速点击Method
*/
@interfaceUIButton (touch)
/**设置点击时间间隔,默认0.5S*/
@property(nonatomic,assign)NSTimeIntervaltimeInterval;
/**
*用于设置单个按钮不需要被hook,忽略YES
*/
@property(nonatomic,assign)BOOLisIgnore;
@end
#define defaultInterval.5//默认时间间隔
@interfaceUIButton()
/**bool类型YES不允许点击NO允许点击设置是否执行点UI方法*/
@property(nonatomic,assign)BOOLisIgnoreEvent;
@end
@implementationUIButton (touch)
+ (void)load{
staticdispatch_once_tonceToken;
dispatch_once(&onceToken, ^{
SELselA =@selector(sendAction:to:forEvent:);
SELselB =@selector(mySendAction:to:forEvent:);
MethodmethodA =class_getInstanceMethod(self,selA);
MethodmethodB =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
BOOLisAdd =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);
}
});
}
- (NSTimeInterval)timeInterval{
return[objc_getAssociatedObject(self,_cmd)doubleValue];
}
- (void)setTimeInterval:(NSTimeInterval)timeInterval{
objc_setAssociatedObject(self,@selector(timeInterval),@(timeInterval),OBJC_ASSOCIATION_RETAIN_NONATOMIC);
}
//当我们按钮点击事件sendAction时将会执行mySendAction
- (void)mySendAction:(SEL)action to:(id)target forEvent:(UIEvent*)event{
if(self.isIgnore) {
//不需要被hook
[selfmySendAction:actionto:targetforEvent:event];
return;
}
if([NSStringFromClass(self.class)isEqualToString:@"UIButton"]) {
self.timeInterval=self.timeInterval==0?defaultInterval:self.timeInterval;
if(self.isIgnoreEvent){
return;
}elseif(self.timeInterval>0){
[selfperformSelector:@selector(resetState)withObject:nilafterDelay: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;
[selfmySendAction:actionto:targetforEvent:event];
}
//runtime动态绑定属性
- (void)setIsIgnoreEvent:(BOOL)isIgnoreEvent{
//注意BOOL类型需要用OBJC_ASSOCIATION_RETAIN_NONATOMIC不要用错，否则set方法会赋值出错
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)setIsIgnore:(BOOL)isIgnore{
//注意BOOL类型需要用OBJC_ASSOCIATION_RETAIN_NONATOMIC不要用错，否则set方法会赋值出错
objc_setAssociatedObject(self,@selector(isIgnore),@(isIgnore),OBJC_ASSOCIATION_RETAIN_NONATOMIC);
}
- (BOOL)isIgnore{
//_cmd == @select(isIgnore);和set方法里一致
return[objc_getAssociatedObject(self,_cmd)boolValue];
}
- (void)resetState{
[selfsetIsIgnoreEvent:NO];
}
@end
