我目前有一个XML模型正在处理我的NSXMLParser;处理后我在模型中得到大约340个对象。我将所有对象放在我的MKMapView上。一旦用户“选择”一个对象(MKAnnotationViewPin
);一旦我开始,标题就会填充,coords(duh?)但副标题设置为占位符。我处理另一个XML文件以检索额外信息,字幕得到更新和填充。
解析XML文件后,我会收到通知并更新其<MKAnnotation>
对象以反映更改的字幕。为了反映地图上的变化,我必须“取消选择”该引脚并再次单击它以显示更改。
这是我的<MKAnnotation>
对象:
部首:
@interface CPCustomMapPin : NSObject <MKAnnotation>
{
NSString *_title;
NSString *_annotation;
CLLocationCoordinate2D _coords;
NSString *stationID;
}
@property (nonatomic, retain) NSString *_title;
@property (nonatomic, retain) NSString *_annotation;
@property (nonatomic) CLLocationCoordinate2D _coords;
@property (nonatomic, retain) NSString *stationID;
- (id) initWithTitle: (NSString *) _title withAnnotation: (NSString *) _annotation withCoords: (CLLocationCoordinate2D) _coords withStationID: (NSString *) _id;
实现:
@implementation CPCustomMapPin
@synthesize _title, _annotation, _coords, stationID;
- (id) initWithTitle: (NSString *) __title withAnnotation: (NSString *) __annotation withCoords: (CLLocationCoordinate2D) __coords withStationID: (NSString *) _id
{
_title = [[NSString alloc] init];
_annotation = [[NSString alloc] init];
stationID = [[NSString alloc] init];
[self set_title: __title];
[self set_annotation: __annotation];
[self set_coords: __coords];
[self setStationID: _id];
return self;
}
- (NSString *) title
{
return _title;
}
- (NSString *) subtitle
{
return _annotation;
}
- (CLLocationCoordinate2D) coordinate
{
return _coords;
}
- (NSString *) description
{
return [NSString stringWithFormat: @"title: %@ subtitle: %@ id: %@", _title, _annotation, stationID];
}
- (void) dealloc
{
[_title release];
[_annotation release];
[stationID release];
[super dealloc];
}
@end
感谢您的宝贵意见。
答案 0 :(得分:2)
显然没有人知道......我刚刚发现了这种技术:
- (void) closeAnnotation: (id <MKAnnotation>) annotation inMapView: (MKMapView *) mapView
{
[mapView deselectAnnotation: annotation animated: NO];
[mapView selectAnnotation: annotation animated: YES];
}
当然,您可以相应地调用您的方法:
示例:
- (void) myMethod
{
for (id <MKAnnotation> _annotation in mapView.annotations)
{
[self closeAnnotation: _annotation inMapView: mapView];
}
}