[英]Want to show custom images on the map with user update location
我想在Google地圖上以用戶遵循的旋轉方式顯示自行車/汽車圖像。 怎么可能。 我添加了didUpdateToLocation
方法來更新用戶的位置,並添加了viewForAnnotation
以顯示自行車的當前位置。 但無法在用戶遵循的地圖上顯示自行車。
- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation*)newLocation fromLocation:(CLLocation *)oldLocation
{
CLLocation *currentLocation = newLocation;
if(currentLocation != nil)
{
CLLocationCoordinate2D location = CLLocationCoordinate2DMake(currentLocation.coordinate.latitude,currentLocation.coordinate.longitude);
MyAnnotation *annotation = [[MyAnnotation alloc] initWithCoordinates:location title:@"India" subTitle:@"Sarvopari Mall"];
[self.myMapView addAnnotation:annotation];
}
}
- (MKAnnotationView *)mapView:(MKMapView *)mapView
viewForAnnotation:(id <MKAnnotation>)annotation{
MKAnnotationView *result = nil;
if ([annotation isKindOfClass:[MyAnnotation class]] == NO)
{
return result;
}
if ([mapView isEqual:self.myMapView] == NO)
{
return result;
}
MyAnnotation *senderAnnotation = (MyAnnotation *)annotation;
NSString *pinReusableIdentifier =
[MyAnnotation
reusableIdentifierforPinColor:senderAnnotation.pinColor];
MKAnnotationView *annotationView = (MKAnnotationView *)
[mapView
dequeueReusableAnnotationViewWithIdentifier:
pinReusableIdentifier];
if (annotationView == nil){
annotationView =
[[MKAnnotationView alloc] initWithAnnotation:senderAnnotation
reuseIdentifier:pinReusableIdentifier];
annotationView.canShowCallout = YES;
}
UIImage *pinImage = [UIImage imageNamed:@"Bike.png"];
if (pinImage != nil){
annotationView.image = pinImage;
annotationView.canShowCallout = YES;
}
result = annotationView;
return result;
}
- (MKAnnotationView *)mapView:(MKMapView *)map viewForAnnotation:(id <MKAnnotation>)annotation
{
static NSString *AnnotationViewID = @"annotationViewID";
MKAnnotationView *annotationView = (MKAnnotationView *)[mapView dequeueReusableAnnotationViewWithIdentifier:AnnotationViewID];
if (annotationView == nil)
{
annotationView = [[[MKAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:AnnotationViewID] autorelease];
}
annotationView.image = [UIImage imageNamed:@"Bike.png"];
annotationView.annotation = annotation;
return annotationView;
}
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