根据ip可以获取到具体位置

NSString *strURL = [@"http://webservice.webxml.com.cn/WebServices/IpAddressSearchWebService.asmx/getCountryCityByIp?theIpAddress=" stringByAppendingString:@"123.150.2.33"];

    //转换为URL

    NSURL *pURL = [NSURL URLWithString:strURL];

    //创建请求

    NSURLRequest *pRequest = [NSURLRequest requestWithURL:pURL];

    NSData *DATA = [NSURLConnection sendSynchronousRequest:pRequest returningResponse:nil error:nil];

    NSString *IP_Address = [[NSString alloc] initWithData:DATA encoding:NSUTF8StringEncoding];