ios – GMSCoordinateBounds角点值 – Google Maps SDK

2023年1月24日 276次阅读

我想只在屏幕的可见区域显示可见标记,但我只得到-180个值.在模拟器和iPad设备上的结果相同.

码：

  GMSVisibleRegion visibleRegion = [mapView.projection visibleRegion];
GMSCoordinateBounds *bounds = [[GMSCoordinateBounds alloc]initWithRegion:visibleRegion];

[mapView animateWithCameraUpdate:[GMSCameraUpdate fitBounds:bounds]];

CLLocationCoordinate2D northEast = bounds.northEast;
CLLocationCoordinate2D northWest = CLLocationCoordinate2DMake(bounds.northEast.latitude, bounds.southWest.longitude);
CLLocationCoordinate2D southEast = CLLocationCoordinate2DMake(bounds.southWest.latitude, bounds.northEast.longitude);
CLLocationCoordinate2D southWest = bounds.southWest;

NSLog(@"NORTH-EST: %.5f",northEast.latitude);
NSLog(@"NORTH-EST: %.5f",northEast.longitude);

NSLog(@"NORTH-WEST: %.5f",northWest.latitude);
NSLog(@"NORTH-WEST: %.5f",northWest.longitude);

NSLog(@"South-EST: %.5f",southEast.longitude);
NSLog(@"South-EST: %.5f",southEast.latitude);

NSLog(@"SOUTH-WEST: %.5f",southWest.latitude);
NSLog(@"SOUTH-WEST: %.5f",southWest.longitude);

日志：

Printing description of visibleRegion:
(GMSVisibleRegion) visibleRegion = {
nearLeft = (latitude = -180, longitude = -180)
nearRight = (latitude = -180, longitude = -180)
farLeft = (latitude = -180, longitude = -180)
farRight = (latitude = -180, longitude = -180)
}

最佳答案找到了解决此问题的方法：

源代码：

GMSVisibleRegion visibleRegion = [mapView.projection visibleRegion];
GMSCoordinateBounds *bounds = [[GMSCoordinateBounds alloc]initWithRegion:visibleRegion];

CLLocationCoordinate2D northEast = bounds.northEast;
CLLocationCoordinate2D southWest = bounds.southWest;