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我的应用有 3 个视图控制器。VC#3(*Sponsor) 将用户带到我的网站，所以我正在尝试为这个 VC 实现可达性。我在项目中添加了系统配置框架和 Apples Reachability .H 和 .M 文件。禁用 ARC 以实现可达性 .M 文件和 VC#3 .M 文件。B&R 项目很好，但在断开互联网连接时我仍然没有收到弹出警报。我也将 Reachability.h 导入到 VC#3。我错过了什么？

VC#3(*赞助商).M

#import "Sponsor.h"
#import "ViewController.h"



@interface Sponsor ()  

@end

@implementation Sponsor

 -(void)viewDidLoad {
[webview loadRequest:[NSURLRequest requestWithURL:[NSURL      
 URLWithString:@"http://opticertificationprep.webs.com/"]]];


 }


 - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
 {
     self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
     if (self) {
         // Custom initialization
     }
     return self;
 }

  -(IBAction)home:(id)sender{



 }

 - (void)didReceiveMemoryWarning
 {
     // Releases the view if it doesn't have a superview.
     [super didReceiveMemoryWarning];

     // Release any cached data, images, etc that aren't in use.
 }

 - (BOOL) hasInternet {
      Reachability *reach = [Reachability      
 reachabilityWithHostName:@"www.opticertificationprep.webs.com"];
     NetworkStatus internetStats = [reach currentReachabilityStatus];

     if (internetStats == NotReachable) {
         UIAlertView *alertOne = [[UIAlertView alloc] initWithTitle:@"Error"     
 message:@"Check Your Internet Connection" delegate:self cancelButtonTitle:@"Okay"   
 otherButtonTitles:nil]; 
         [alertOne show];
         [alertOne release];
 }
    
      return YES;

 }
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1 回答 1

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对于任何有同样问题的人。我在 .M 文件中缺少这段代码。添加后，我的弹出警报效果很好。

`
 -(void)viewDidLoad {

     {

         [super viewDidLoad];
         [self hasInternet];

     }

`

于 2013-08-19T04:23:22.713 回答