默认的针脚下拉动画在我的应用中不起作用,这里是我写的一些代码:
- (void)viewDidLoad {
/*
some code...
*/
[theMapView addAnnotation:addAnnotation];
[addAnnotation release];
}
- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>)annotation{
MKPinAnnotationView *annoView = [[MKPinAnnotationView alloc] initWithAnnotation:annotation
reuseIdentifier:@"current"];
annoView.animatesDrop = YES;
annoView.pinColor = MKPinAnnotationColorGreen;
return annoView;
}
现在,该引脚只是在屏幕上显示为默认红色而没有任何动画,MKMapViewDelegate
协议已被采用,任何人都可以看到这里的错误?
答案 0 :(得分:13)
首次使用:
[yourMap_view setDelegate:self];
ViewDidLoad中的
然后调用它来获取投影动画:
- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>)annotation
{
MKPinAnnotationView *pinView = nil;
if(annotation!= map_view.userLocation)
{
static NSString *defaultPin = @"pinIdentifier";
pinView = (MKPinAnnotationView*)[map_view dequeueReusableAnnotationViewWithIdentifier:defaultPin];
if(pinView == nil)
pinView = [[[MKPinAnnotationView alloc]initWithAnnotation:annotation reuseIdentifier:defaultPin]autorelease];
pinView.pinColor = MKPinAnnotationColorPurple; //Optional
pinView.canShowCallout = YES; // Optional
pinView.animatesDrop = YES;
}
else
{
[map_view.userLocation setTitle:@"You are Here!"];
}
return pinView;
}