从 NIB 加载/创建 GeoLocation 视图 - IOS 和 MapKit
我有两个类 - MapView 和 MapController。主要思想是使View成为MVC模式中的共享对象。
- MapView 具有位于 MapNib.xib 中的 MKMapView 的 IBOutlet“mapView”
- MapController 包含引用类 MapView 的属性“mapView”
然后我尝试从控制器设置 MKMapView 的一些属性，但无论如何它都不会对此做出反应。例如我尝试在 MapController :
self.mapView.mapView.showUserLocation = YES; // does not show blue point ...
MapView Class :
@interface MapView : UIViewController
@property (nonatomic, retain) IBOutlet MKMapView *mapView;
...
//UINib *view = [UINib nibWithNibName:@"MapView" bundle:nil];
//[view instantiateWithOwner:self options:nil];
@end
MapController Class :
@interface MapController : UIViewController<
CLLocationManagerDelegate,
MKMapViewDelegate>
@property (nonatomic, retain) MapModel *mapModel;
@property (nonatomic, retain) MapView *mapView;
...
- (void)viewDidLoad
{
[super viewDidLoad];
self.mapView = [[[MapView alloc] init] autorelease];
self.mapView.mapView.showsUserLocation = YES;
} @end
我试图使 MapView 成为 UIView、UINib、UIViewcontroller 的子类，尝试使用 UINib::nibWithNibName、UIViewController::initWithNibName、UIViewController::loadNibNamed 直接加载 NIB - 它确实如此没关系...我可以看到地图，但蓝点无论如何都没有显示...为什么？？？ 只有一种组合对我有用 - 以与控制器（MapController.xib）相同的方式命名 NIB 并将 MKMapView 的插座添加为控制器属性... 似乎不可能在一个类中加载 NIB / View 并使用它在另一个中，我对吗？
不知怎的，这工作得很好：
@interface MapController : UIViewController
@property (nonatomic, retain) IBOutlet MKMapView *mapView; // NIB was renamed to MapController.xib
...
@end
然后在控制器中：
self.mapView.showUserLocation = YES; // now this shows blue dot ... why???
谢谢，艺术
I have two classes - MapView and MapController. The main idea is to make View a shared object in MVC pattern.
- MapView has IBOutlet "mapView" for MKMapView located in MapNib.xib
- MapController contains property "mapView" referencing to class MapView
Then i try to set some properties of MKMapView from controller and it does not react on this anyway. For example i try in MapController :
self.mapView.mapView.showUserLocation = YES; // does not show blue point ...
MapView Class :
@interface MapView : UIViewController
@property (nonatomic, retain) IBOutlet MKMapView *mapView;
...
//UINib *view = [UINib nibWithNibName:@"MapView" bundle:nil];
//[view instantiateWithOwner:self options:nil];
@end
MapController Class :
@interface MapController : UIViewController<
CLLocationManagerDelegate,
MKMapViewDelegate>
@property (nonatomic, retain) MapModel *mapModel;
@property (nonatomic, retain) MapView *mapView;
...
- (void)viewDidLoad
{
[super viewDidLoad];
self.mapView = [[[MapView alloc] init] autorelease];
self.mapView.mapView.showsUserLocation = YES;
} @end
I tried to make MapView a subclass of UIView, UINib, UIViewcontroller, tried to load NIB directly using UINib::nibWithNibName, UIViewController::initWithNibName, UIViewController::loadNibNamed - it does not matter ... i can see the map but blue point is not shown anyway ... why???
Only one combination works for me - to name NIB the same way as controller (MapController.xib) and add outlet for MKMapView as controller property ... it seems like it is impossible to load NIB / View in one class and use it in another, am i right?
Somehow this works fine :
@interface MapController : UIViewController
@property (nonatomic, retain) IBOutlet MKMapView *mapView; // NIB was renamed to MapController.xib
...
@end
And then in controller :
self.mapView.showUserLocation = YES; // now this shows blue dot ... why???
Thanks, Art
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不需要创建 IBOutlet。 NIB 创建它们并将它们分配给您的变量，您通过分配和初始化新的地图视图并将其保存到该变量来覆盖它
IBOutlets do not need to be created. The NIB creates them and assigns them to your vars, your are overwriting it by allocing and initing a new mapview and saving it to that variable