objective-c - 检查一个点是否落在地理围栏内？

Question

是否可以使用 iOS 5 API 检查给定的纬度和经度是否落在给定的 GeoFence 内？怎么办？

Answer 1

简单的答案是肯定的:

CLRegion *region = your geofence;
CLLocationCoordinate2D myLocation = CLLocationCoordinate2DMake(38.9, -77.04);
if ([region containsCoordinate:myLocation]) {
   NSLog(@"You're soaking in it.");
}

请注意，目前仅支持圆形区域(“围栏”)。查看Location Awareness Programming Guide和 CLRegion Class Reference .