iPhone xcode 中的 nsthread

发布于 2024-08-31 02:50:27 字数 813 浏览 3 评论 0原文

再会！

我想在 xcode 项目中使用 nsthreads，该项目将调用一个用于网络访问的函数，并检查网络是否存在，所以我需要一个线程，该线程将在 1 分钟后执行以进行检查连接性。并将继续运行，除非应用程序关闭。

[NSThread detachNewThreadSelector:@selector(startTheBackgroundJob) toTarget:self withObject:nil];

startTheBackgroundJob

NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
// wait for 3 seconds before starting the thread, you don't have to do that. This is just an example how to stop the NSThread for some time
[NSThread sleepForTimeInterval:5];
//[self performSelectorInBackground:@selector(checkNet) withObject:nil];
[self performSelectorOnMainThread:@selector(checkNet) withObject:nil waitUntilDone:YES];
[pool release];

它仅在第一次工作，但在其他任何时候都不起作用，我的意思是它只进行了 1 个循环，

有人可以在这方面帮助我。

谢谢

原文

Good Day!

i want to use nsthreads in a project of xcode that will call a function which is for the network access and will check that if the network is there or not, so i need to have a thread which will execute after lets say 1 minutes to check the connectivity. and will continue run unless the app is closed.

[NSThread detachNewThreadSelector:@selector(startTheBackgroundJob) toTarget:self withObject:nil];

startTheBackgroundJob

NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
// wait for 3 seconds before starting the thread, you don't have to do that. This is just an example how to stop the NSThread for some time
[NSThread sleepForTimeInterval:5];
//[self performSelectorInBackground:@selector(checkNet) withObject:nil];
[self performSelectorOnMainThread:@selector(checkNet) withObject:nil waitUntilDone:YES];
[pool release];

it works only for the first time but not any other, i mean only 1 loop it makes

can somebody help me in this regard.

Thanks

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傲娇萝莉攻 2024-09-07 02:50:27

您可以使用 NStimer 代替...将 Property Repeated 设置为 YES

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不气馁 2024-09-07 02:50:27

当您需要执行冗长的任务，但不希望它阻止应用程序其余部分的执行时，线程特别有用。特别是，您可以使用线程来避免阻塞应用程序的主线程。

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绿阴红影里的.如风往事 2024-09-07 02:50:27

我建议结合 NSTimer（每 5-10 秒触发一次）+ Reachability 接口（检查网络状态）。不需要线程。要使用 Reachability 检查 Apple 的示例。

将此调用放入 viewDidLoad 中

[NSTimer scheduledTimerWithTimeInterval:10 target:self selector:@selector(onTimer:) userInfo:nil repeats:YES];

-(void) onTimer:(NSTimer *)theTimer 
{
    //Here perform reachability checks
}

I'd suggest a combination of NSTimer, that fires each 5-10 seconds + a Reachability interface, which checks for you the network status. No need for a thread. For using the Reachability check Apple's example.

Put this call in viewDidLoad

[NSTimer scheduledTimerWithTimeInterval:10 target:self selector:@selector(onTimer:) userInfo:nil repeats:YES];

-(void) onTimer:(NSTimer *)theTimer 
{
    //Here perform reachability checks
}

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