有点类似NSTimer，取名叫HighFrequencyTriggerFilter，附上代码，头文件：
#import <Foundation/Foundation.h>
@interface HighFrequencyTriggerFilter : NSObject
/**
无论是触发成功还是最后取消掉，该对象都会失效，需要重新创建
@param delayTime 缓冲时间
@param triggerHandler 成功触发后调用的block
@return 返回可操作的对象
*/
+ (instancetype)filterWithDelayTime:(NSTimeInterval)delayTime triggerHandler:(void(^)())triggerHandler;
/**
触发
*/
- (void)trigger;
/**
取消
*/
- (void)cancel;
@end
执行文件：
#import "HighFrequencyTriggerFilter.h"
@interface HighFrequencyTriggerFilter ()
@property (nonatomic, assign) NSTimeInterval delayTime;
@property (nonatomic, copy) void (^triggerHandler)();
@property (nonatomic, strong) NSTimer *timer;
@end
@implementation HighFrequencyTriggerFilter
+ (instancetype)filterWithDelayTime:(NSTimeInterval)delayTime triggerHandler:(void(^)())triggerHandler {
HighFrequencyTriggerFilter *filter = [HighFrequencyTriggerFilter new];
filter.delayTime = delayTime;
filter.triggerHandler = triggerHandler;
return filter;
}
- (void)trigger {
[self.timer invalidate];
self.timer = nil;
self.timer = [NSTimer scheduledTimerWithTimeInterval:self.delayTime target:self selector:@selector(delayTrigger) userInfo:nil repeats:NO];
}
- (void)delayTrigger {
if (self.triggerHandler) {
self.triggerHandler();
}
[self cancel];
}
- (void)cancel {
[self.timer invalidate];
self.timer = nil;
self.triggerHandler = nil;
}
@end
github地址：
https://github.com/guolingege/HighFrequencyTriggerFilter
