Ios 应用程序关闭时的iBeacon通知
我正在尝试在应用程序关闭时输入一个区域(在最近距离)时向用户发送本地通知。如果应用程序在后台,我当前可以使用它,但如果应用程序关闭,则无法使用它。我读过其他帖子说这是可能的,但没有一个解决方案有效,而且已经过时了。如果您能在Swift 3中提供帮助,我将不胜感激 以下是我的代码(全部在AppDelegate中): 在didFinishLaunchingWithOptions中:Ios 应用程序关闭时的iBeacon通知,ios,swift,ibeacon,Ios,Swift,Ibeacon,我正在尝试在应用程序关闭时输入一个区域(在最近距离)时向用户发送本地通知。如果应用程序在后台,我当前可以使用它,但如果应用程序关闭,则无法使用它。我读过其他帖子说这是可能的,但没有一个解决方案有效,而且已经过时了。如果您能在Swift 3中提供帮助,我将不胜感激 以下是我的代码(全部在AppDelegate中): 在didFinishLaunchingWithOptions中: locationManager.delegate = self locationManager.pausesLocat
locationManager.delegate = self
locationManager.pausesLocationUpdatesAutomatically = false
locationManager.allowsBackgroundLocationUpdates = true
locationManager.requestAlwaysAuthorization()
let uuid = UUID(uuidString: "someuuid")!
let beaconRegion = CLBeaconRegion(proximityUUID: uuid, identifier: "SomeBeacon")
beaconRegion.notifyEntryStateOnDisplay = true
beaconRegion.notifyOnEntry = true
beaconRegion.notifyOnExit = true
locationManager.startMonitoring(for: beaconRegion)
locationManager.startRangingBeacons(in: beaconRegion)
我还实现了didRangeBeacons。代码看起来正确,允许在应用程序关闭时进行检测。您不需要:
locationManager.pausesLocationUpdatesAutomatically = false
locationManager.allowsBackgroundLocationUpdates = true
但他们不应该伤害任何东西
你只提到了应用程序关闭时的问题,所以我认为前景检测工作正常。是吗?如果没有,请先对此进行故障排除
通常很难正确测试应用程序关闭的用例,因为测试设置问题导致失败。以下几点提示可能会有所帮助:
如果您按照上面的测试提示操作,您应该会在信标位于附近的几秒钟内看到检测回调。更新,正如@davidgyoung在另一个问题上向我指出的那样,这种使用
UNLocationNotificationTrigger
的方法不会向您报告主标识符和次标识符,因为它使用的是监控API,而不是获取主标识符和次标识符所需的范围。这限制了您可以使用此包装器API执行的所有操作。它确实很方便,但没有人们希望的那么有用
据我所知,新的(iOS 10,Swift 3)方法是使用
UserNotifications
库,并通过UNNotificationRequest
实现它。您可以通过UNLocationNotificationTrigger
将信标区域传递给它。现在我知道,对于您想要的内容(应用程序关闭时通知),这似乎是违反直觉的,但是,您希望将nslocationwhenUsageDescription
键添加到您的Info.plist
中,而不是NSLocationAlwaysUsageDescription
。我不知道为什么会这样,但这是必要的一步。以下是我用于创建(iBeacon)基于位置的通知的代码:
// Ensure you use a class variable in order to ensure the location
// manager is retained, otherwise the alert message asking you to
// authorize it will disappear before you can tap "allow" which
// will keep it from working
let locationManager = CLLocationManager()
// ...
// Somewhere in your class (e.g. AppDelegate or a ViewController)
self.locationManager.requestWhenInUseAuthorization()
let region = CLBeaconRegion(proximityUUID: UUID(uuidString: "YOUR-UNIQUE-UUID-STRING")!, identifier: "com.yourcompany.youridentifier")
region.notifyOnEntry = true
region.notifyOnExit = false
let content = UNMutableNotificationContent()
content.title = "Notification Title"
content.body = "Body text goes here"
// Not sure if repeats needs to be set to true here, but that's
// how I've implemented it
let trigger = UNLocationNotificationTrigger(region: region, repeats: true)
// Use the same identifier each time to ensure it gets overwritten
// in the notification system
let identifier = "BeaconLocationIdentifier"
let request = UNNotificationRequest.init(identifier: identifier, content: content, trigger: trigger)
// This is probably unnecessary since we're using the same identifier
// each time this code is called
UNUserNotificationCenter.current().removeAllPendingNotificationRequests()
// Make sure you set the notification center's delegate. My
// containing class is the AppDelegate. I implement the delegate
// methods there.
UNUserNotificationCenter.current().delegate = self
UNUserNotificationCenter.current().add(request, withCompletionHandler: { (error) in
})
// Not sure if this is required either, but after I added this, everything
// started working
self.locationManager.startRangingBeacons(in: region)
确保您实现了notification center委派方法:
func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) {
// Called when the notification has been swiped or tapped by the user
// Do something with the response here
// Make sure you call the completion handler
completionHandler()
}
func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {
// Called when the app is in the foreground
// Do something with the notification here
// Make sure you call the completion handler
completionHandler([.alert, .sound])
}
最后,您需要首先授权通知,以使这一切正常工作。您可以使用此代码执行以下操作:
let options: UNAuthorizationOptions = [.alert,.sound]
UNUserNotificationCenter.current().requestAuthorization(options: options) {
(granted, error) in
if !granted {
debugPrint("Something went wrong")
} else {
debugPrint("Notifications granted")
}
}
最后一点提示:我有一个旧金属罐,它(某种程度上)充当我正在使用的信标的法拉第笼。我只是在那里关闭了一分钟左右的信号灯,然后应用程序检测到我已经超出了范围。这比试着走得离灯塔足够远或取下电池(这对我来说根本不起作用)更方便。有些信标的信号比其他信标强,可能仍能通过tin,所以YMMV。你能显示你的代码吗?如果它在后台工作,则不清楚为什么它在关闭应用程序时不工作。刚刚更新,将感谢您的帮助。