Accessing IP Address with NSHost

先试试这整个：

NSHost* myhost =[NSHost currentHost]; 
NSString *ad = [myhost address]; 

再试试：

-(void) getIPWithNSHost{
    NSArray*addresses =[[NSHost currentHost] addresses];

for(NSString*anAddress in addresses){
    if(![anAddress hasPrefix:@"127"]&&[[anAddress componentsSeparatedByString:@"."] count]==4){
         stringAddress = anAddress;
        break;
    }else{
        stringAddress =@"IPv4 address not available";
    }
}
        //NSLog (@"getIPWithNSHost: stringAddress = %@ ",stringAddress);    

}

//NSString *stringAddress; is declared else where在其他地方声明