这是一个单例
- (void)scheduledDispatchTimerWithName:(NSString *)timeName timeInterval:(double)interval queue:(dispatch_queue_t)queue repeats:(BOOL)repeats action:(dispatch_block_t)action{
if(nil == timerName) return;
if(nil == queue){
queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT,0);
dispatch_source_t timer = [self.timerContainer objectForKey:timerName];
}
if(!timer){
timer = dispatch_source_create(DISPATCH_SOURCE_TYPE_TIMER,0,0,queue);
dispatch_resume(timer);
[self.timerContainer setObject:timer forKey:timeName];
}
dispatch_source_set_timer(timer,dispatch_time(DISPATCH_TIME_NOW,interval*NSEC_PER_SEC),interval*NSEC_PER_SEC,0.1*NSEC_PER_SEC);
__weak typeof(self) weakSelf = self;
dispatch_source_set_event_handler(timer,^{
action();
if(!repeats){
[weakSelf cancelTimerWithName:timerName];
}
});
}
- (void)cancelTimerWithName:(NSString*)timerName{
dispatch_source_t timer = [self.timerContainer objectForKey:timerName];
if (!timer) return;
[self.timerContainer removeObjectForKey:timerName];
dispatch_source_cancel(timer);
}
