Question

我正在开发通用应用程序。那时我的应用程序是打开的，我正在检查是否存在互联网连接。目的是我添加AFNETWORKING框架。问题是我正在调试我的代码{{1这个函数没有执行控件去外面。这是我的要求是互联网连接不可用意味着它显示弹出“请连接互联网”就像互联网连接意味着它正常打开。我发布我的代码库

[manager GET:APIscript parameters:nil success:^(NSURLSessionDataTask *task, id responseObject)

这里这一行（NSURL *baseURL = [NSURL URLWithString:@"https://www.google.co.in"]; NSString *APIscript=@"/webhp"; AFHTTPSessionManager *manager = [[AFHTTPSessionManager alloc] initWithBaseURL:baseURL]; manager.responseSerializer = [AFJSONResponseSerializer serializer]; [manager.requestSerializer setTimeoutInterval:20.0]; [manager GET:APIscript parameters:nil success:^(NSURLSessionDataTask *task, id responseObject) { if ([task.response isKindOfClass:[NSHTTPURLResponse class]]) { NSHTTPURLResponse *r = (NSHTTPURLResponse *)task.response; if ([r statusCode] == 200) { //Do success stuff } } failure:^(NSURLSessionDataTask *task, NSError *error) { UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Error" message:[error localizedDescription] delegate:nil cancelButtonTitle:@"Ok" otherButtonTitles:nil]; [alertView show]; //do failure stuff }];）只是没有执行。请指导我解决这个问题。谢谢。

Answer 1

从Github下载rateability lib并编写此代码......

GitHub lib

-(BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
   [self setUpRechability];
}

在appdelegate中的didFinishLaunchingWithOptions中调用此方法

-(void)setUpRechability
{
  [[NSNotificationCenter defaultCenter] addObserver:self
                                           selector:@selector(handleNetworkChange:)
                                               name:kReachabilityChangedNotification
                                             object:nil];
  netReachability = [Reachability reachabilityForInternetConnection];
  [netReachability startNotifier];
  [self handleNetworkChange:nil];
 }

此方法将在互联网状态发生变化时调用..

- (void) handleNetworkChange:(NSNotification *)notice
{
  NetworkStatus remoteHostStatus = [netReachability currentReachabilityStatus];

  if          (remoteHostStatus == NotReachable)      {NSLog(@"no");      hasInet=NO;   }
  else if     (remoteHostStatus == ReachableViaWiFi)  {NSLog(@"wifi");    hasInet=YES;  }
  else if     (remoteHostStatus == ReachableViaWWAN)  {NSLog(@"cell");    hasInet=YES;  }


  if (!hasInet)
  {
      [HUD hide:YES];
      HUD=nil;
  }
}

Answer 2

您可以尝试使用Apple Reachability Sample或者您可以使用AFHTTPRequestOperationManager，这样更简单，更容易。

AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
[manager GET:@"http://example.com/resources.json" parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {
    NSLog(@"JSON: %@", responseObject);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
    NSLog(@"Error: %@", error);
}];

如何在AppDelegate中测试互联网检查？

2 个答案: