ユーザーが地図に触れたときに注釈を追加する際に問題が発生します。
UIGestureRecognizer
ユーザーのタッチを検出するために使用しています。
長押しが検出されると、この関数を呼び出します:
- (void)handleLongPressGesture:(UIGestureRecognizer*)gestureRecognizer{
if (gestureRecognizer.state == UIGestureRecognizerStateEnded) return;
NSLog(@"long press");
CGPoint touchPoint = [gestureRecognizer locationInView:mapView];
CLLocationCoordinate2D touchMapCoordinate =
[mapView convertPoint:touchPoint toCoordinateFromView:mapView];
RdvAnnotation *rdvAnnotation = [[RdvAnnotation alloc] init];
[rdvAnnotation initWithCoordinate:touchMapCoordinate];
[mapView removeAnnotations:mapView.annotations];
[mapView addAnnotation:rdvAnnotation];
[rdvAnnotation release]; }
コンソールに NSLog が表示され、rdvAnnotation
適切な座標で初期化されています。
注釈が地図上に表示されない理由がわかりません。
これが私の- (MKAnnotationView *)mapView:(MKMapView *)theMapView viewForAnnotation:(id <MKAnnotation>)annotation
方法です:
- (MKAnnotationView *)mapView:(MKMapView *)theMapView viewForAnnotation:(id <MKAnnotation>)annotation{
if ([annotation isKindOfClass:[MKUserLocation class]])
return nil;
if ([annotation isKindOfClass:[RdvAnnotation class]])
{
static NSString* RdvAnnotationIdentifier = @"rdvAnnotationIdentifier";
MKPinAnnotationView* pinView = (MKPinAnnotationView *)
[mapView dequeueReusableAnnotationViewWithIdentifier:RdvAnnotationIdentifier];
if (!pinView)
{
MKPinAnnotationView* customPinView = [[[MKPinAnnotationView alloc]
initWithAnnotation:annotation reuseIdentifier:RdvAnnotationIdentifier] autorelease];
customPinView.pinColor = MKPinAnnotationColorPurple;
customPinView.animatesDrop = YES;
customPinView.canShowCallout = YES;
return customPinView;
}
else
{
pinView.annotation = annotation;
}
return pinView;
}
return nil;}
私のviewDidLoad
方法:
- (void)viewDidLoad {
[super viewDidLoad];
mapView = [[MKMapView alloc] initWithFrame:self.view.frame];
[mapView setShowsUserLocation:TRUE];
[mapView setMapType:MKMapTypeStandard];
[mapView setDelegate:self];
CLLocationManager *locationManager=[[CLLocationManager alloc] init];
[locationManager setDelegate:self];
[locationManager setDesiredAccuracy:kCLLocationAccuracyNearestTenMeters];
[locationManager startUpdatingLocation];
self.navigationItem.title = @"Rendez-vous" ;
}