通过添加UIButton类别，即可轻松搞定。
代码如下：
.h
#import <UIKit/UIKit.h>
@interface UIButton (CS_FixMultiClick)
@property (nonatomic, assign) NSTimeInterval cs_acceptEventInterval; // 重复点击的间隔
@property (nonatomic, assign) NSTimeInterval cs_acceptEventTime;
@end
.m
#import "UIButton+CS_FixMultiClick.h"
#import <objc/runtime.h>
@implementation UIButton (CS_FixMultiClick)
// 因category不能添加属性，只能通过关联对象的方式。
static const char *UIControl_acceptEventInterval = "UIControl_acceptEventInterval";
- (NSTimeInterval)cs_acceptEventInterval {
return [objc_getAssociatedObject(self, UIControl_acceptEventInterval) doubleValue];
}
- (void)setCs_acceptEventInterval:(NSTimeInterval)cs_acceptEventInterval {
objc_setAssociatedObject(self, UIControl_acceptEventInterval, @(cs_acceptEventInterval), OBJC_ASSOCIATION_RETAIN_NONATOMIC);
}
static const char *UIControl_acceptEventTime = "UIControl_acceptEventTime";
- (NSTimeInterval)cs_acceptEventTime {
return [objc_getAssociatedObject(self, UIControl_acceptEventTime) doubleValue];
}
- (void)setCs_acceptEventTime:(NSTimeInterval)cs_acceptEventTime {
objc_setAssociatedObject(self, UIControl_acceptEventTime, @(cs_acceptEventTime), OBJC_ASSOCIATION_RETAIN_NONATOMIC);
}
// 在load时执行hook
+ (void)load {
// Method before = class_getInstanceMethod(self, @selector(sendAction:to:forEvent:));
// Method after = class_getInstanceMethod(self, @selector(cs_sendAction:to:forEvent:));
// method_exchangeImplementations(before, after);
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
Class class = [self class];
//分别获取
SEL beforeSelector = @selector(sendAction:to:forEvent:);
SEL afterSelector = @selector(cs_sendAction:to:forEvent:);
Method beforeMethod = class_getInstanceMethod(class, beforeSelector);
Method afterMethod = class_getInstanceMethod(class, afterSelector);
//先尝试给原来的方法添加实现，如果原来的方法不存在就可以添加成功。返回为YES，否则
//返回为NO。
//UIButton 真的没有sendAction方法的实现，这是继承了UIControl的而已，UIControl才真正的实现了。
BOOL didAddMethod =
class_addMethod(class,
beforeSelector,
method_getImplementation(afterMethod),
method_getTypeEncoding(afterMethod));
if (didAddMethod) {
// 如果之前不存在，但是添加成功了，此时添加成功的是cs_sendAction方法的实现
// 这里只需要方法替换
class_replaceMethod(class,
afterSelector,
method_getImplementation(beforeMethod),
method_getTypeEncoding(beforeMethod));
} else {
//本来如果存在就进行交换
method_exchangeImplementations(afterMethod, beforeMethod);
}
});
}
- (void)cs_sendAction:(SEL)action to:(id)target forEvent:(UIEvent *)event {
if ([NSDate date].timeIntervalSince1970 - self.cs_acceptEventTime < self.cs_acceptEventInterval) {
return;
}
if (self.cs_acceptEventInterval > 0) {
self.cs_acceptEventTime = [NSDate date].timeIntervalSince1970;
}
[self cs_sendAction:action to:target forEvent:event];
}
@end
用法
btn.cs_acceptEventInterval = 3;
搞定了~
