方案一
- (void)buttonClickMethod:(UIButton *)sender {
// 每次点击的时候都会先取消一次响应，然后调用perform方法，延迟响应该事件，避免多次响应
[NSObject cancelPreviousPerformRequestsWithTarget:self selector:@selector(delayResponseMethod) object:btn];
// 延迟执行，一般设置1秒左右，太久会显得有延迟，响应也不能太慢
[self performSelector:@selector(delayResponseMethod) withObject:btn afterDelay:1.0];
}
- (void)delayResponseMethod {
NSLog(@"延迟执行的方法");
}
方案二
- 通过NSTimer延迟执行方法，和方案一类似
//定时器
@property (nonatomic, strong) NSTimer *timer;//定时器
@property(nonatomic, assign) NSInteger count;
//需要给count一个默认值，比如0
- (void)buttonClickMethod:(UIButton *)sender {
self.count ++;
[self.timer invalidate];
self.timer = nil;
self.timer =[NSTimer timerWithTimeInterval:1.0 target:self selector:@selector(delayResponseMethod) userInfo:nil repeats:NO];
/* NSRunLoopCommonModes 防止滚动的时候有延迟*/
[[NSRunLoop currentRunLoop] addTimer:self.timer forMode:NSRunLoopCommonModes];
}
- (void)delayResponseMethod {
NSLog(@"延迟执行的方法");
}
方案三
通过Runtime交换UIButton的响应事件方法，从而控制响应事件的时间间隔。
- 转载自CSDN博主「walkerwqp」的文章，如有问题，联系本人可删除
- 原文链接：https://blog.csdn.net/walkerwqp/java/article/details/92561515
实现步骤如下:
1 创建一个UIButton的分类，使用runtime增加public属性cs_eventInterval和private属性cs_eventInvalid。
2 在+load方法中使用runtime将UIButton的-sendAction:to:forEvent:方法与自定义的cs_sendAction:to:forEvent:方法进行交换
3 使用cs_eventInterval作为控制cs_eventInvalid的计时因子，用cs_eventInvalid控制UIButton的event事件是否有效。
*代码实现如下
@interface UIButton (Extension)
/** 时间间隔 */
@property(nonatomic, assign)NSTimeInterval cs_eventInterval;
@end
import "UIButton+Extension.h"
import <objc/runtime.h>
static char *const kEventIntervalKey = "kEventIntervalKey"; // 时间间隔
static char *const kEventInvalidKey = "kEventInvalidKey"; // 是否失效
@interface UIButton()
/** 是否失效 - 即不可以点击 */
@property(nonatomic, assign)BOOL cs_eventInvalid;
@end
@implementation UIButton (Extension)
- (void)load {
// 交换方法
Method clickMethod = class_getInstanceMethod(self, @selector(sendAction:to:forEvent:));
Method cs_clickMethod = class_getInstanceMethod(self, @selector(cs_sendAction:to:forEvent:));
method_exchangeImplementations(clickMethod, cs_clickMethod);
}
pragma mark - click
- (void)cs_sendAction:(SEL)action to:(id)target forEvent:(UIEvent *)event {
if (!self.cs_eventInvalid) {
self.cs_eventInvalid = YES;
[self cs_sendAction:action to:target forEvent:event];
[self performSelector:@selector(setCs_eventInvalid:) withObject:@(NO) afterDelay:self.cs_eventInterval];
}
}
pragma mark - set | get
(NSTimeInterval)cs_eventInterval {
return [objc_getAssociatedObject(self, kEventIntervalKey) doubleValue];
}(void)setCs_eventInterval:(NSTimeInterval)cs_eventInterval {
objc_setAssociatedObject(self, kEventIntervalKey, @(cs_eventInterval), OBJC_ASSOCIATION_RETAIN_NONATOMIC);
}(BOOL)cs_eventInvalid {
return [objc_getAssociatedObject(self, kEventInvalidKey) boolValue];
}(void)setCs_eventInvalid:(BOOL)cs_eventInvalid {
objc_setAssociatedObject(self, kEventInvalidKey, @(cs_eventInvalid), OBJC_ASSOCIATION_RETAIN_NONATOMIC);
}
测试代码如下
/** 方法三 */(void)drawExpecialBtn{
UIButton *btn = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, 200, 100)];
[btn setTitle:@"按钮点击" forState:UIControlStateNormal];
[btn setTitleColor:[UIColor redColor] forState:UIControlStateNormal];
// 按钮不可点击时,文字颜色置灰
[btn setTitleColor:[UIColor grayColor] forState:UIControlStateDisabled];
[btn setTitleColor:[UIColor blueColor] forState:UIControlStateHighlighted];
btn.center = self.view.center;
[btn addTarget:self action:@selector(tapBtn:) forControlEvents:UIControlEventTouchUpInside];
btn.cs_eventInterval = 2.0;
[self.view addSubview:btn];
}(void)tapBtn:(UIButton *)btn {
NSLog(@"按钮点击...");
}在方法三中交互UIButton的sendAction:to:forEvent:方法,实际上交互的是UIControl的sendAction:to:forEvent:方法，所以在使用·UIControl·或其·子类（比如UISlider）·的·sendAction:to:forEvent:·方法时会引起参数缺失的崩溃。
