ios - NSNotificationCenter 'selector' working more than once is single Network status change -


in app want detect network status changes operations @ time. have added following code in app-delegate. when turn on net connection "networkstatuschanged:" method called once correct. , when turn off net-connection calls twice. can me find out problem please......

[[nsnotificationcenter defaultcenter] addobserver:self                                              selector:@selector(networkstatuschanged:)                                                  name:kreachabilitychangednotification                                                object:nil];     reachability = [[reachability reachabilityforinternetconnection] retain];     [reachability startnotifier];

it doing once lost wifi connection , second time lost cell data connection.


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