ios - iOS 如何知道用户来到了特定位置？ [既不在后台也不在前景]

Question

我有用户的当前位置。我可以匹配用户是否在循环内的半径。

我已经在应用程序的前台和后台做了。但我想在终止的应用程序中执行此操作。当用户靠近我的特定点时，进入我的区域后如何弹出警报？!!？

Answer 1

应用程序的后台或终止状态

/*
 *  startMonitoringSignificantLocationChanges
 *
 *  Discussion:
 *      Start monitoring significant location changes.  The behavior of this service is not affected by the desiredAccuracy
 *      or distanceFilter properties.  Locations will be delivered through the same delegate callback as the standard
 *      location service.
 *
 */
@available(iOS 4.0, *)
open func startMonitoringSignificantLocationChanges()

使用 CLRegion 进行地理围栏 - 跟踪用户进入该区域和离开该区域的天气

  let region = CLCircularRegion(center: geotification.coordinate, radius: geotification.radius, identifier: geotification.identifier)

  region.notifyOnEntry = (geotification.eventType == .onEntry)
  region.notifyOnExit = !region.notifyOnEntry