ios - Cllocationmanager Didupdatelocation委托(delegate)没有互联网就不会被调用

我目前正在开发基于位置的ios应用程序。我正在使用didupdatelocation委托方法来显示用户的当前位置。当我将设备连接到互联网时，它可以正常工作。但是当我断开互联网连接时，它的行为很奇怪，而且didupdatelocation不再被调用。请给出一个解决方案。
已编辑，包含代码详细信息

- (void)viewDidLoad
{
    [super viewDidLoad];
    locationManager = [[CLLocationManager alloc]init]; // initializing locationManager
    locationManager.delegate = self; // we set the delegate of locationManager to self.
    locationManager.desiredAccuracy = kCLLocationAccuracyBest; // setting the accuracy

    [locationManager startUpdatingLocation];  //requesting location updates
}

-(void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error{
    UIAlertView *errorAlert = [[UIAlertView alloc]initWithTitle:@"Error" message:@"There was an error retrieving your location" delegate:nil cancelButtonTitle:@"OK" otherButtonTitles: nil];
    [errorAlert show];
    NSLog(@"Error: %@",error.description);
}
-(void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations
{
    CLLocation *crnLoc = [locations lastObject];
    latitude.text = [NSString stringWithFormat:@"%.8f",crnLoc.coordinate.latitude];
    longitude.text = [NSString stringWithFormat:@"%.8f",crnLoc.coordinate.longitude];
    altitude.text = [NSString stringWithFormat:@"%.0f m",crnLoc.altitude];
    speed.text = [NSString stringWithFormat:@"%.1f m/s", crnLoc.speed];
}

最佳答案

根据您的评论@ANSHAD，如果您使用的是不带GPS的旧iPad，则获取位置数据的唯一方法就是使用WiFi，因此，如果您关闭WiFi，则不会获得位置更新。如果您想要没有WiFi的GPS，则可以购买外部GPS模块see here