在新线程中使用NSTimer

最新推荐文章于 2019-03-29 17:15:00 发布

转载最新推荐文章于 2019-03-29 17:15:00 发布 · 59 阅读

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原文链接：http://www.cnblogs.com/pengyingh/articles/2354432.html

本文深入探讨了iOS开发中Objective-C和Swift的关键技术，包括基础语法、框架使用、性能优化等，旨在帮助开发者提升iOS应用开发技能。

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方法一：

-(void) viewDidLoad{
[self performSelectorInBackground:@selector(call1) withObject:nil];
}

-(void) call1{
timer1 = [NSTimer scheduledTimerWithTimeInterval:3.0 target:self selector:@selector(doSomething) userInfo:nil repeats:NO];

[[NSRunLoop currentRunLoop] addTimer:timer1 forMode:NSRunLoopCommonModes];

}

-(void) call2{
// do something
timer1 invalidate];
timer1 = nil;
}

方法二：

-(void)viewDidAppear:(BOOL)animated {
    NSThread* timerThread =[[NSThread alloc] initWithTarget:self selector:@selector(timerStart)object:nil];
    [timerThread start];
}

-(void)timerStart
{
    NSAutoreleasePool*pool =[[NSAutoreleasePool alloc] init];
    NSRunLoop* runLoop =[NSRunLoop currentRunLoop];
    timer =[[NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(method) userInfo:nil repeats:YES] retain];//一定要retain，不然timerStart执行完后，NSTimer就被释放了。
    [runLoop run];
    [pool release];
}

-(void)viewDidDisappear:(BOOL)animated {
    [super viewDidDisappear:animated];
    [timer invalidate];
}

方法三：

timer = [NSTimer timerWithTimeInterval:5.0 target:self selector:@selector(SendHeartBeat) userInfo:nil repeats:YES];

 [[NSRunLoop mainRunLoop] addTimer:heartTimer forMode:NSDefaultRunLoopMode];

转载于:https://www.cnblogs.com/pengyingh/articles/2354432.html