AFN Network Framework 2.x version-Network monitoring

-(void) viewdidload {
    [super viewdidload];
    
    1. Access to network monitoring management
    Afnetworkreachabilitymanager *mgr = [Afnetworkreachabilitymanager Sharedmanager];
    
    2. Set the processing of the network state change
    [Mgr setreachabilitystatuschangeblock:^ (afnetworkreachabilitystatus status) {
        // The current network status changes will automatically invoke
        switch (status) {case
            Afnetworkreachabilitystatusunknown:
                //unknown network break
                ;
            Case afnetworkreachabilitystatusnotreachable:
                //Broken Network (no network) break
                ;
            Case Afnetworkreachabilitystatusreachableviawwan:
                //Mobile phone with network break
                ;
            Case AFNETWORKREACHABILITYSTATUSREACHABLEVIAWIFI:
                //wifi network break
                ;
        }
    ];
    
    3. Start monitoring
    [Mgr Startmonitoring];
}