我应该在哪里执行可达性检查？ [英] Where should I perform a Reachability check?

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： http://stackoverflow.com/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: http://stackoverflow.com/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:.

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