MKMapView设置初始缩放级别

Question

我在viewWillLayoutSubviews中使用此代码来设置地图的初始区域.

CLLocationCoordinate2D startCoord = CLLocationCoordinate2DMake(13.747266, 100.526804);
MKCoordinateRegion adjustedRegion = [self.mapView regionThatFits:MKCoordinateRegionMakeWithDistance(startCoord, 800, 800)];
[self.mapView setRegion:adjustedRegion animated:YES];
NSLog(@"%f",adjustedRegion.span.latitudeDelta);

但是,初始缩放级别不起作用.坐标是正确的,但它总是放大到最大级别.我检查区域的范围,得到0.0.我该如何解决.

Answer 1

你需要设置你的span.So在这里给出你的跨度值.

adjustedRegion.span.longitudeDelta  = 0.005;
adjustedRegion.span.latitudeDelta  = 0.005;