2.To Check the Reachablity or Network connection

1.put the Reachability.h Reachability.m files in to project folder

2.To add the SystemConfiguration.framework framework

3.#import "Reachability.h"

this .m file

4.

#pragma mark -

#pragma mark Method for Check Internet Connection

• (void) updateInterfaceWithReachability: (Reachability*) curReach

{

NetworkStatus netStatus = [curReach currentReachabilityStatus];

switch (netStatus){

case NotReachable:{ internetWorking = 0; break; }

case ReachableViaWiFi:{ internetWorking = 1; break; }

case ReachableViaWWAN:{ internetWorking = 1; break; }

}

}

-(void)CheckInternetConnection

{

Reachability * internetReach = [[Reachability reachabilityForInternetConnection] retain];

[internetReach startNotifier];

[self updateInterfaceWithReachability:internetReach];

}

5. Where ever u want to put this

[self CheckInternetConnection];

if (internetWorking == 0)

{

[loaderLoginInfoChk stopAnimating];

loaderLoginInfoChk.hidesWhenStopped=YES;

[loaderLoginInfoChk release];

self.view.userInteractionEnabled=YES;

UIAlertView *alert=[[UIAlertView alloc]initWithTitle:@"" message:@"No Network Connection Available. Please Try again Later." delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil];

[alert show];

[alert release];

}

else

{

}