// Created by ming on 2017/4/10.// Copyright © 2017年 wode. All rights reserved.//#import#import#define defaultInter 2//默认时间间隔
@interface UIButton (UIControl_button)
@property (nonatomic,assign)NSTimeInterval timerInterVal;// 用这个重复点击加时间隔
@property (nonatomic,assign)BOOL isSelect; //YES不允许点击 no运行点击
@end
//
// UIButton+UIControl_button.m
//
// Created by ming on 2017/4/10.
// Copyright © 2017年 wode. All rights reserved.
//
/*runTime*/
#import "UIButton+UIControl_button.h"
@implementation UIButton (UIControl_button)
-(NSTimeInterval)timerInterVal
{
return [objc_getAssociatedObject(self, _cmd)doubleValue];
}
-(void)setTimerInterVal:(NSTimeInterval)timerInterVal
{
objc_setAssociatedObject(self, @selector(timerInterVal), @(timerInterVal), OBJC_ASSOCIATION_RETAIN_NONATOMIC);
}
//runtime 动态绑定 属性
-(void)setIsSelect:(BOOL)isSelect
{
//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(isSelect), @(isSelect), OBJC_ASSOCIATION_RETAIN_NONATOMIC);
}
//get方法
-(BOOL)isSelect
{
//_cmd ==@select(isSelect);和set方法一致
return [objc_getAssociatedObject(self, _cmd)boolValue];
}
- (void)resetState{
[self setIsSelect:NO];
}
+(void)load
{
//单利
static dispatch_once_t onceToken;
_dispatch_once(&onceToken, ^{
SEL selA = @selector(sendAction:to:forEvent:);
SEL selB = @selector(mySendAction:to:forEvent:);
/*
class_getMethodImplementation(<#__unsafe_unretained Class cls#>, <#SEL name#>) 获取实现方法(IMP实现方法)
class_getClassMethod :获取类方法
class_getInstanceMethod: 获取对象方法
*/
Method methodA =class_getInstanceMethod(self, selA);
Method methodB =class_getInstanceMethod(self, selB);
//讲 methodB 的实现 添加到系统方法中 也就是说 讲 methodA方法指针添加成 方法methodB 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 所以此时此刻必须将方法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methodBDE IMP互换一下即可.
method_exchangeImplementations(methodA, methodB);
}
});
NSLog(@"+load方法");
}
//当我们按钮点击执行时间 sendAction 时，将会执行mySendAction
-(void)mySendAction:(SEL)action to:(id)target forEvent:(UIEvent*)event
{
if ([NSStringFromClass(self.class)isEqualToString:@"UIButton"]) {
self.timerInterVal = self.timerInterVal==0?defaultInter:self.timerInterVal;
if (self.isSelect) {
return;
}else if (self.timerInterVal>0){
[self performSelector:@selector(resetState) withObject:nil afterDelay:self.timerInterVal];
}
}
//此处 methodA和 methodB方法IMP互换了，实际上执行sendAciont：所以不会死循环.
self.isSelect = YES;
[self mySendAction:action to:target forEvent:event];
}
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