我应该在哪里执行可达性检查？

本文介绍了我应该在哪里执行可达性检查？的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我想检查有效的网络连接。我按照Apple的Reachability示例，并将我的支票放在 applicationDidFinishLaunching

#pragma mark - #pragma mark应用程序生命周期 - （BOOL）应用程序：（UIApplication *）application didFinishLaunchingWithOptions：（NSDictionary *）launchOptions { if（getenv NSZombieEnabled）|| getenv（NSAutoreleaseFreedObjectCheckEnabled）） { NSLog（@NSZombieEnabled / NSAutoreleaseFreedObjectCheckEnabled enabled！ } //在应用程序启动后覆盖自定义点。 [[NSNotificationCenter defaultCenter] addObserver：self selector：@selector（reachabilityChanged :) name：kReachabilityChangedNotification object：nil]; //检查连接 internetReach = [[Reachability reachabilityForInternetConnection] retain]; [internetReach startNotifer]; [self updateInterfaceWithReachability：internetReach]; [window addSubview：navigationController.view]; [window makeKeyAndVisible]; return YES;然而，我的应用程序会崩溃有时与错误 }

<应用程序无法及时启动

我已经将我的崩溃发送为SO问题： stackoverflow/questions/3908882/application-failed-to-launch-in-time

解决方案 / div>

在 -applicationDidBecomeActive 中，您可以在后台调用使用的可达性代码的方法 performSelectorInBackground：withObject：。

I want to check for a valid network connection. I followed Apple's Reachability example and put my check in applicationDidFinishLaunching

#pragma mark - #pragma mark Application lifecycle - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { if(getenv("NSZombieEnabled") || getenv("NSAutoreleaseFreedObjectCheckEnabled")) { NSLog(@"NSZombieEnabled/NSAutoreleaseFreedObjectCheckEnabled enabled!"); } // Override point for customization after application launch. [[NSNotificationCenter defaultCenter] addObserver: self selector: @selector(reachabilityChanged:) name: kReachabilityChangedNotification object: nil]; //Check for connectivity internetReach = [[Reachability reachabilityForInternetConnection] retain]; [internetReach startNotifer]; [self updateInterfaceWithReachability: internetReach]; [window addSubview:navigationController.view]; [window makeKeyAndVisible]; return YES; }

However, my app will crash sometimes with the error Application Failed to Launch in Time

I have posted my crash as an SO question here: stackoverflow/questions/3908882/application-failed-to-launch-in-time

I'm not sure where I should perform the reachability check?

解决方案

In -applicationDidBecomeActive you may call a method in the background that uses the reachability code with -performSelectorInBackground:withObject:.