有
int a;
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在C++中,为什么不呢
cin >> a;
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需要&符号
scanf("%d", &a);
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在C?
如何改变MKMarkerAnnotationView尺寸?
我尝试设置annotationView.bounds.size = CGSize(width: 50, height: 50),但看起来大小没有改变。我还尝试打印视图的大小,看起来默认为 28,28
func mapView(_ mapView: MKMapView, viewFor annotation: MKAnnotation) -> MKAnnotationView? {
guard annotation is MKPointAnnotation else { return nil }
let annotationView = MKMarkerAnnotationView(annotation: annotation, reuseIdentifier: Constant.Indentifier.mapPoint)
annotationView.canShowCallout = true
annotationView.animatesWhenAdded = true
annotationView.glyphImage = UIImage(systemName: "house.fill")
annotationView.glyphTintColor = .systemBlue
annotationView.markerTintColor = .white
print(annotationView.bounds.size) // defaulted to 28,28
annotationView.bounds.size = CGSize(width: 50, height: 50) // Does not change bubble size
return annotationView
}
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