Reachability AlertView in iOS Programing

Question

So I make alert view detects if there in a active internet connection.

This is the Code:

- (void)viewDidLoad
{
    [super viewDidLoad];

    [[NSNotificationCenter defaultCenter] addObserver:self
    selector:@selector(reachabilityChanged:)
    name:kReachabilityChangedNotification
    object:nil];
    Reachability * reach = [Reachability reachabilityWithHostname:@"www.google.com"];
    reach.reachableBlock = ^(Reachability * reachability)
    { 
     dispatch_async(dispatch_get_main_queue(), ^{
     blockLabel.text = @"";  
     });
    };
    reach.unreachableBlock = ^(Reachability * reachability)
    {
     dispatch_async(dispatch_get_main_queue(), ^{
     blockLabel.text = @"You are not connected to the Internet";
     UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Please connect to Internet"
     message:nil
     delegate:self
     cancelButtonTitle:nil
     otherButtonTitles:nil];
     UIActivityIndicatorView *progress= [[UIActivityIndicatorView alloc] initWithFrame:CGRectMake(125, 50, 30, 30)];
     progress.activityIndicatorViewStyle = UIActivityIndicatorViewStyleWhiteLarge;
            [alert addSubview:progress];
            [progress startAnimating];
            [alert show]; 
        });
    };
    [reach startNotifier];
    // Do any additional setup after loading the view, typically from a nib.
}

So my application detects if there is a internet connection. But the issue is that if I turn on internet on the iPhone and open the application it still saying there is not internet connection. What should I do…

I have a quick question how to disable the alert view when connected to internet…. — , Nov 22 '12 at 20:23
when you are using third party classes you might as well state it if anyone is to make any sense of your code, it looks like https://github.com/tonymillion/Reachability in this case — valexa, Nov 22 '12 at 23:01
Check this answer http://stackoverflow.com/questions/12589042/apple-reachability-notifications-for-network-or-wi-fi — user1509593, Nov 25 '12 at 13:05

score 1 · Accepted Answer · answered Nov 22 '12 at 20:18

1

Well i fix the issue by using notifications.. Code for Reference

-(void)reachabilityChanged:(NSNotification*)note
{
    Reachability * reach = [note object];

    if([reach isReachable])
    {
        notificationLabel.text = @"Notification Says Reachable";
        NSLog(@"Internet is Up");
    }
    else
    {
        notificationLabel.text = @"Notification Says Unreachable";
        NSLog(@"Internet is Down");
    }
}

answered Nov 22 '12 at 20:18

Yup, this is the way to go. – Rok Jarc Nov 22 '12 at 20:26
1

Thanks, I was wandering how can i disable the alertview when the internet is up…. – Nov 22 '12 at 20:41
when you are using third party classes you might as well state it if anyone is to make any sense of your code, it looks like https://github.com/tonymillion/Reachability in this case – valexa Nov 22 '12 at 23:01
Sorry please could answer this question how to disable the alert view when connected to internet… – Nov 22 '12 at 23:03

score 0 · Answer 2 · edited May 23 '17 at 12:27

0

You could always implement a non-stop checking for host reachability (or internet connectivity) by signing up for reachability notifications.

One of best examples on how to do this can be found here on SO: How to check for an active Internet Connection on iPhone SDK?

This way your app will always know if the host is reachable or not.

edited May 23 '17 at 12:27

Community

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answered Nov 22 '12 at 19:59

Rok Jarc

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I have a quick question how to disable the alert view when connected to internet… – Nov 22 '12 at 20:42

score 0 · Answer 3 · answered Nov 22 '12 at 20:02

There is no telling what your sparse code does as it does not even look like your Reachability class is Apple's Reachability sample code wrapper around the SystemConfiguration API , you can find that at http://developer.apple.com/library/ios/#samplecode/Reachability/Introduction/Intro.html

The simplest and most definitive check is just a uncached NSURLRequest for a specific url (not just a hostname which merely tests if DNS resolution is working which is not a definitive test and could even be cached)

I have a quick question how to disable the alert view when connected to internet… — , Nov 22 '12 at 20:43

Reachability AlertView in iOS Programing

3 Answers3