I'm using the Reachability
classes for checking when I got an internet connection en when it goes down.
This is my code:
IN VIEW DID LOAD:
internetReachable = [Reachability reachabilityForInternetConnection];
[internetReachable startNotifier];
// check if a pathway to a random host exists
hostReachable = [Reachability reachabilityWithHostname:@"www.google.com"];
[hostReachable startNotifier];
Then the notification method
-(void) checkNetworkStatus:(NSNotification *)notice
{
// called after network status changes
NetworkStatus internetStatus = [internetReachable currentReachabilityStatus];
switch (internetStatus)
{
case NotReachable:
{
NSLog(@"The internet is down. IN AGENDA");
self.internetActive = NO;
break;
}
case ReachableViaWiFi:
{
NSLog(@"The internet is working via WIFI.IN AGENDA");
self.internetActive = YES;
break;
}
case ReachableViaWWAN:
{
NSLog(@"The internet is working via WWAN.IN AGENDA");
self.internetActive = YES;
break;
}
}
NetworkStatus hostStatus = [hostReachable currentReachabilityStatus];
switch (hostStatus)
{
case NotReachable:
{
NSLog(@"A gateway to the host server is down.IN AGENDA");
self.hostActive = NO;
break;
}
case ReachableViaWiFi:
{
NSLog(@"A gateway to the host server is working via WIFI.IN AGENDA");
self.hostActive = YES;
break;
}
case ReachableViaWWAN:
{
NSLog(@"A gateway to the host server is working via WWAN.IN AGENDA");
self.hostActive = YES;
break;
}
}
}
And finally how I add en remove the observer
-(void)viewWillAppear:(BOOL)animated{
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(checkNetworkStatus:) name:kReachabilityChangedNotification object:nil];
}
-(void)viewDidDisappear:(BOOL)animated{
[[NSNotificationCenter defaultCenter] removeObserver:self name:kReachabilityChangedNotification object:nil];
}
THE PROBLEM
It seems like that the viewcontroller gets the notification multiple times. This is my NSLOG
2014-01-04 10:32:16.299 Adsolut[10009:333b] CALLED reachabilityChanged
2014-01-04 10:32:16.299 Adsolut[10009:470b] CALLED reachabilityChanged
2014-01-04 10:32:16.300 Adsolut[10009:70b] The internet is down. IN AGENDA
2014-01-04 10:32:16.301 Adsolut[10009:70b] A gateway to the host server is down.IN AGENDA
2014-01-04 10:32:16.301 Adsolut[10009:70b] The internet is down. IN AGENDA
2014-01-04 10:32:16.302 Adsolut[10009:70b] A gateway to the host server is down.IN AGENDA
2014-01-04 10:32:16.313 Adsolut[10009:470b] CALLED reachabilityChanged
2014-01-04 10:32:16.313 Adsolut[10009:4a03] CALLED reachabilityChanged
2014-01-04 10:32:16.314 Adsolut[10009:70b] The internet is working via WIFI.IN AGENDA
2014-01-04 10:32:16.314 Adsolut[10009:333b] CALLED reachabilityChanged
2014-01-04 10:32:16.315 Adsolut[10009:70b] A gateway to the host server is down.IN AGENDA
2014-01-04 10:32:16.314 Adsolut[10009:f63] CALLED reachabilityChanged
2014-01-04 10:32:16.315 Adsolut[10009:70b] The internet is working via WIFI.IN AGENDA
2014-01-04 10:32:16.316 Adsolut[10009:70b] A gateway to the host server is down.IN AGENDA
2014-01-04 10:32:16.316 Adsolut[10009:70b] The internet is working via WIFI.IN AGENDA
2014-01-04 10:32:16.317 Adsolut[10009:70b] A gateway to the host server is down.IN AGENDA
2014-01-04 10:32:16.317 Adsolut[10009:70b] The internet is working via WIFI.IN AGENDA
2014-01-04 10:32:16.318 Adsolut[10009:70b] A gateway to the host server is down.IN AGENDA
Can somebody help ?
Add the reachability notification in the appdelegate didFinishLaunchingWithOptions only and set the value of reachability in Bool variable isInternetAvailable in appDelegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(checkNetworkStatus:)
name:kReachabilityChangedNotification object:nil];
}
- (void)checkNetworkStatus:(NSNotification *)notice {
// called after network status changes
NetworkStatus internetStatus = [self.internetReachable currentReachabilityStatus];
switch (internetStatus)
{
case NotReachable:
{
//#######NSLog(@"The internet is down.");
self.isInternetAvailable = FALSE;
break;
}
case ReachableViaWiFi:
{
//#######NSLog(@"The internet is working via WIFI");
self.isInternetAvailable = TRUE;
break;
}
case ReachableViaWWAN:
{
//#######NSLog(@"The internet is working via WWAN!");
self.isInternetAvailable = TRUE;
break;
}
default:
{
//#######NSLog(@"The internet is working via mobile SIM!");
self.isInternetAvailable = FALSE;
break;
}
}
}
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