您好,我是IBeacons的新手,也是swift的初学者,我正在尝试制作一个小型应用程序,该应用程序可在应用程序的背景下检测到Ibeacon,并在Ibeacon处于有效范围内时发送通知,但当我在应用程序打开时行走时,即使我使用了
来授予应用程序访问背景位置的权限,我也无法使其正常工作并在后台搜索Ibeacon。 if (CLLocationManager.authorizationStatus() != CLAuthorizationStatus.authorizedAlways) {
locationManager.requestAlwaysAuthorization();
}
这是我的主要问题,我也有一个副问题,如果关闭并再次打开该应用程序,则该应用程序不会保存该人的姓名。这是我的代码,非常感谢您的帮助,如果您有任何参考以了解有关IBeacons应用程序的更多信息,我将不胜感激
import UIKit
import CoreLocation
import UserNotifications
class ViewController: UIViewController, CLLocationManagerDelegate {
@IBOutlet weak var field: UITextField!
@IBOutlet weak var textLbl : UILabel!
var inRoom = false
var name = ""
var sendYet = false ;
func sendHiNoti()
{
name = field.text! ;
let content = UNMutableNotificationContent()
content.title = "Heloo "+name
content.subtitle = "Welcome to your Home"
content.body = "this messaage to welcome you in Home"
content.badge = 1
content.sound = UNNotificationSound(named: UNNotificationSoundName(rawValue: "quiteimpressed.mp3"))
let trigger = UNTimeIntervalNotificationTrigger(timeInterval: 2, repeats: false)
let request = UNNotificationRequest(identifier: "azanSoon", content: content, trigger: trigger)
UNUserNotificationCenter.current().removeAllPendingNotificationRequests()
UNUserNotificationCenter.current().add(request) {(error) in
if let error = error {
print("error: \(error)")
}
}
}
func sendByeNoti()
{
name = field.text! ;
let content = UNMutableNotificationContent()
content.title = "OH"+name
content.subtitle = "You are going out already ??"
content.body = "Take care of your self"
content.badge = 1
content.sound = UNNotificationSound(named: UNNotificationSoundName(rawValue: "quiteimpressed.mp3"))
let trigger = UNTimeIntervalNotificationTrigger(timeInterval: 2, repeats: false)
let request = UNNotificationRequest(identifier: "azanSoon", content: content, trigger: trigger)
UNUserNotificationCenter.current().removeAllPendingNotificationRequests()
UNUserNotificationCenter.current().add(request) {(error) in
if let error = error {
print("error: \(error)")
}
}
}
@IBAction func getText(){
name = field.text!
let alert = UIAlertController(title: "Your Name is", message: name, preferredStyle: UIAlertController.Style.alert)
alert.addAction(UIAlertAction(title: "Ok", style: UIAlertAction.Style.default, handler: nil))
self.present(alert, animated: true, completion: nil)
}
var locationManager = CLLocationManager()
override func viewDidLoad() {
super.viewDidLoad()
locationManager.delegate = self
UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .sound, .badge], completionHandler: {didAllow, error in})
let uuid = UUID(uuidString: "E2C56DB5-DFFB-48D2-B060-D0F5A71096E0")!
let beaconRegion = CLBeaconRegion(proximityUUID: uuid, major: 444, minor: 333, identifier: "abcdefac005b")
if (CLLocationManager.authorizationStatus() != CLAuthorizationStatus.authorizedAlways) {
locationManager.requestAlwaysAuthorization();
}
locationManager.startRangingBeacons(in: beaconRegion)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
func locationManager(_ manager: CLLocationManager, didRangeBeacons beacons: [CLBeacon], in region: CLBeaconRegion) {
print(beacons)
if(beacons.count > 0){
if(!sendYet){
if beacons[0].proximity.rawValue < 2 {
textLbl.text = "In the room"
sendHiNoti()
sendYet = true ;
}
}
else if beacons[0].proximity.rawValue >= 3 {
textLbl.text = "Outside the room"
sendByeNoti()
sendYet = false ;
}
}
}
}
答案 0 :(得分:0)
所示代码使用范围为locationManager.startRangingBeacons(in: beaconRegion)
的信标,通常在前景和背景之间转换后超过10秒钟在后台不支持该信标。
locationManager.requestAlwaysAuthorization()
仅在后台解锁使用信标监视的功能。当信标第一次出现(didEnter(region: region)
)或全部消失(didExit(region: region)
)时,信标监视将为您提供一个呼叫。
在正常情况下,这是唯一在后台运行的信标API。
可以使用两种技术在后台进行信标测距超过10秒:
如我的博客文章here中所述,通过启动后台任务,您可以在应用转换到后台后获得180秒的后台测距。
您还可以告诉iOS,您是一个定位应用,可以解锁无限的背景信标范围。您必须首先在第1部分中实现该解决方案。然后,在Info.plist中声明:
<key>UIBackgroundModes</key>
<array>
<string>location</string>
</array>
最后,在您的代码中运行locationManager.startUpdatingLocation()
。这将使您的应用收到其纬度/经度的定期更新,但是副作用是,您可以使步骤1中的后台任务永远运行,从而允许范围在后台永远继续。
如果您选择使用选项2,请注意,要使您的应用在AppStore中获得批准出售会更加困难。您必须说服Apple评论者,使您的应用程序是合法的位置应用程序(例如Waze或Apple Maps),并且用户知道您的应用程序始终在后台运行。如果您不相信他们,他们将拒绝您的应用。
另外,很容易将值保存到持久性存储中,以便在应用程序重新启动时保留它们。像这样使用NSUserDefaults:
// save off name when user fills it in
UserDefaults.standard.set(name, forKey: "name")
// load back name on app restart
name = UserDefaults.standard.string(forKey: "name")