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- (MKAnnotationView *) mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>) annotation{
画我自己的形象自定义针。我想为不同的针脚使用不同的图像。我想知道如何区分哪个引脚正在调用此函数。
- (MKAnnotationView *) mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>) annotation{
MKPinAnnotationView *annView=[[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:@"MyPin"];
annView.canShowCallout = YES;
annView.calloutOffset = CGPointMake(-5, 5);
if ([annView.annotation.title isEqualToString:myLocation]) {
UIImage *pinImage = [UIImage imageNamed:@"myLocationImage.png"];
[annView setImage:pinImage];
} else {
UIImage *pinImage = [UIImage imageNamed:@"resImage.png"];
[annView setImage:pinImage];
}
return annView;
}
编辑：重温这个新项目，我意识到创建不同的针类是浪费的。更好的实现方法是设置引脚类型，然后将其从MKAnnotationView的注释中读出。下面的例子。
- (MKAnnotationView *)mapView:(MKMapView *)map viewForAnnotation:(id <MKAnnotation>) annotation {
MKPinAnnotationView *pin = [[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:@"PinID"];
UIButton *button = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
[button addTarget:self action:@selector(viewStoreDetails:) forControlEvents:UIControlEventTouchDown];
pin.rightCalloutAccessoryView = button;
pin.canShowCallout = YES;
pin.calloutOffset = CGPointMake(-5, 5);
Annotation *a = (Annotation *)pin.annotation;
int i = a.locationType;
switch (i) {
case RETAIL:
pin.image = [UIImage imageNamed:@"pin_retail.png"];
break;
case OUTLET:
pin.image = [UIImage imageNamed:@"pin_outlet.png"];
break;
case COMING_SOON:
pin.image = [UIImage imageNamed:@"pin_coming_soon.png"];
break;
case MY_LOCATION:
pin.image = [UIImage imageNamed:@"pin_my_location.png"];
break;
pin.image = [UIImage imageNamed:@"pin_retail.png"];
default:
break;
}
return [pin autorelease];
}