UIMapView：用户位置注释仅在iPad中为白色而不是蓝色脉冲

我一直在使用地图一段时间，所以我理解了显示用户位置需要发生的基本知识

I've been working with maps for a while so I understand the basics of what needs to happen to show the user's location

map.showsUserLocation = YES; //also have the box checked in .xib

设置locationManager

set up the locationManager

- (CLLocationManager *)locationManager {

if (locationManager != nil) {
    return locationManager;
}

locationManager = [[CLLocationManager alloc] init];
[locationManager setDesiredAccuracy:kCLLocationAccuracyNearestTenMeters];
[locationManager setDelegate:self];

return locationManager;
}

我已经登录并看到我正在点击didUpdateUserLocation方法

I've logged and see that I'm hitting the didUpdateUserLocation method

- (void)mapView:(MKMapView *)mapView didUpdateUserLocation:(MKUserLocation *)userLocation {

if (!userLoc)
{
    //NSLog(@"Mapping - didUpdateUserLocation");
    userLoc = userLocation.location;
}

    [locationManager startUpdatingLocation];
}

我还要确保不删除用户的注释

and I'm also making sure I don't remove the user's annotation

if (![annotation isKindOfClass:[MKUserLocation class]])

...为什么蓝点在iPhone上显示并发出脉冲，但只在iPad上显示为白点？ （两个设备都是iOS 7.1.1）

...so why is the blue dot showing and pulsing on the iPhone, but showing as a white dot only on the iPad? (Both devices are iOS 7.1.1)