88 lines
2.3 KiB
Objective-C
88 lines
2.3 KiB
Objective-C
//
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// YFTimer.m
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// Timer_Demo
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//made in zhongdao Copyright © 2018年 jianghu3. All rights reserved.
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//
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#import "YFTimer.h"
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#import "YFTimerManager.h"
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@interface YFTimer()
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// NSPointerArray 可以让数组中的引用是弱引用
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// 关于NSPointerArray的使用 https://blog.csdn.net/weixin_34387468/article/details/90334534
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// 所有定时器的代理
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@property(nonatomic,strong)NSPointerArray *delegates;
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// 定时器
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@property (nonatomic,strong)dispatch_source_t timer;
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@end
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@implementation YFTimer
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// 添加定时器
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-(void)fireTimeWithInterval:(NSTimeInterval)interval{
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self.interval = interval;
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dispatch_source_t timer = dispatch_source_create(DISPATCH_SOURCE_TYPE_TIMER, 0, 0, dispatch_get_main_queue());
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dispatch_source_set_timer(timer, dispatch_walltime(NULL, 0), interval * NSEC_PER_SEC, 0); //每多少秒触发timer，误差多少秒
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dispatch_source_set_event_handler(timer, ^{
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// 定时器触发时执行的 block
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[self isTimeToDoThing];
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});
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dispatch_resume(timer);
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self.timer = timer;
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}
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// 取消定时器
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-(void)invalidate{
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self.delegates = nil;
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self.timer = nil;
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}
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// 添加代理
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-(void)timerAddDelegate:(id<YFTimerDelegate>)delegate{
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if (![self.delegates.allObjects containsObject:delegate]) {
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[self.delegates addPointer:NULL];
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[self.delegates compact];
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[self.delegates addPointer:(__bridge void * _Nullable)(delegate)];
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}
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}
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// 取消代理
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-(void)timerDeleteDelegate:(id<YFTimerDelegate>)delegate{
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if ([self.delegates.allObjects containsObject:delegate]) {
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NSInteger index = [self.delegates.allObjects indexOfObject:delegate];
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[self.delegates removePointerAtIndex:index];
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}
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}
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// 倒计时要做的事
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-(void)isTimeToDoThing{
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if (self.delegates.allObjects.count == 0) {
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[YFTimerManager invalidateTimerForTimeInterval:self.interval];
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return;
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}
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for (id<YFTimerDelegate>delegate in self.delegates.allObjects) {
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if (delegate && [delegate respondsToSelector:@selector(toDoThingsWhenTimeCome:)]) {
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[delegate toDoThingsWhenTimeCome:self.interval];
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}
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}
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}
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-(NSPointerArray *)delegates{
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if (!_delegates) {
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_delegates = [NSPointerArray weakObjectsPointerArray];
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}
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return _delegates;
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}
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@end
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