Notification when WiFi connection available - ios

Question

I need a notification when device has WiFi connection is available or Device get connect via WiFi. I need to do some stuff only when WiFi is available.
I have used following code from Reachability:
BOOL status=true;
[[NSNotificationCenter defaultCenter] addObserver:self selector:#selector(checkNetworkStatus:) name:kReachabilityChangedNotification object:nil];
internetReachability = [Reachability reachabilityForInternetConnection];
[internetReachability startNotifier];
NetworkStatus internetNetworkStatus = [internetReachability currentReachabilityStatus];
status = (internetNetworkStatus == ReachableViaWiFi);
But checkNetworkStatus: method not called properly and accurately. So, please guide me to solve this problem.
Any help to solve problem must be appreciated.

Answer 1

I hope it will help you in your problem.
-(void) rechabilityInit
{
[[NSNotificationCenter defaultCenter] addObserver:self
selector:#selector(reachabilityChanged:)
name:kReachabilityChangedNotification
object:nil];
self.internetConnectionReach = [Reachability reachabilityForInternetConnection];
self.internetConnectionReach.reachableBlock = ^(Reachability * reachability)
{
NSLog(#"%#", reachability.currentReachabilityString);
[[NSOperationQueue mainQueue] addOperationWithBlock:^{
dispatch_async(dispatch_get_main_queue(), ^{
// Do stuff here when WIFI is availble
}];
};
self.internetConnectionReach.unreachableBlock = ^(Reachability * reachability)
{
NSLog(#"%#", reachability.currentReachabilityString);
dispatch_async(dispatch_get_main_queue(), ^{
[[NSOperationQueue mainQueue] addOperationWithBlock:^{
// do some stuff here when WIFI not present
}];
};
[self.internetConnectionReach startNotifier];
}
-(void)reachabilityChanged:(NSNotification*)note
{
Reachability * reach = [note object];
if (reach == self.localWiFiReach)
{
if([reach isReachable])
{
NSString * temp = [NSString stringWithFormat:#"LocalWIFI Notification Says Reachable(%#)", reach.currentReachabilityString];
NSLog(#"%#", temp);
}
else
{
NSString * temp = [NSString stringWithFormat:#"LocalWIFI Notification Says Unreachable(%#)", reach.currentReachabilityString];
NSLog(#"%#", temp);
}
}
}

Answer 2

The following way is help me to solve my problem:
// Use below to any method
// check for internet connection
[[NSNotificationCenter defaultCenter] addObserver:self selector:#selector(checkNetworkStatus:) name:kReachabilityChangedNotification object:nil];
internetReachability = [Reachability reachabilityForInternetConnection];
[internetReachability startNotifier];
-(void) checkNetworkStatus:(NSNotification *)notice {
// called after network status changes
NetworkStatus internetStatus = [internetReachability currentReachabilityStatus];
switch (internetStatus) {
case NotReachable: {
NSLog(#"The internet is down.");
break;
}
case ReachableViaWiFi: {
NSLog(#"The internet is working via WIFI.");
//Remove Observer
[[NSNotificationCenter defaultCenter] removeObserver:self name:kReachabilityChangedNotification object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self selector:#selector(checkNetworkStatus:) name:kReachabilityChangedNotification object:nil];
//Write your code
break;
}
case ReachableViaWWAN: {
NSLog(#"The internet is working via WWAN.");
break;
}
}
}