問題描述

問題:

我試圖讓它一直使用用戶的位置，并不斷檢查它是否在我設(shè)置的 CLLocationCoordinate2D 點的 5 英里范圍內(nèi).如果是這樣，它會在應(yīng)用程序打開時發(fā)送警報，或者在應(yīng)用程序關(guān)閉時發(fā)送通知.

I'm trying to make it so that it uses the user's location all the time and constantly checks to see if it is within 5 miles of the CLLocationCoordinate2D points I have set. If so, it sends a alert if the app is open or a notification if the app is closed.

有用信息:

在我的項目中，我有 4 個 swift 文件:

In my project I have 4 swift files:

Locations.swift 包含 CLLocationCoordinate2D 點.

Utilities.swift 包含一個簡單的警報.

Utilities.swift holds a simple alert.

UserLocation.swift 檢索并更新用戶的位置

UserLocation.swift retrieves and updates the user's location

GeoLocationViewController.swift 監(jiān)控位置

注意:

某些代碼可能不在正確的位置或不相關(guān)，我正在查看另一個項目，試圖從中提取相關(guān)代碼以在我的項目中使用.請告訴我你是否發(fā)現(xiàn)了錯誤.

Some code may not be in the right place or relevant, I was looking at another project trying to extract relevant code from it to use in my project. Please tell me if you do catch a mistake.

代碼:

Locations.swift:

import UIKit
import MapKit

class Locations: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
        var radius: CLLocationDistance = 5        
        let arroyo = CLLocationCoordinate2D (latitude: 33.781327997137595, longitude: -116.46394436519012)
        var arroyoCoord: CLLocationCoordinate2D = arroyo

        let buddyrogers = CLLocationCoordinate2D (latitude: 33.78051204742721, longitude: -116.46362250010833)
        var buddyCoord: CLLocationCoordinate2D = buddyrogers

        let chopsticks = CLLocationCoordinate2D (latitude: 33.815995425565184, longitude: -116.44107442645873)
        let colorfulfountain = CLLocationCoordinate2D (latitude: 33.80443304398751, longitude: -116.45723923544313)
        let diamond = CLLocationCoordinate2D (latitude: 33.80216859530781, longitude: -116.45711048941041)
        let dinahshore = CLLocationCoordinate2D (latitude: 33.806554795852996, longitude: -116.47734507421876)
        let fountoflife = CLLocationCoordinate2D (latitude: 33.78075282028137, longitude: -116.46407847564086)
        let fountains = CLLocationCoordinate2D (latitude: 33.780141969313235, longitude: -116.46346156756744)
        let historicphoto = CLLocationCoordinate2D (latitude: 33.78130570353292, longitude: -116.46389072100982)
        let holistic = CLLocationCoordinate2D (latitude: 33.781338029257775, longitude: -116.46408249895438)
        let hollywoodheroes = CLLocationCoordinate2D (latitude: 33.78095792254918, longitude: -116.45820483068849)
        let indiangathering = CLLocationCoordinate2D (latitude: 33.78136366689296, longitude: -116.46371905963287)
        let indianwomen = CLLocationCoordinate2D (latitude: 33.78622660767695, longitude: -116.45820483068849)
        let cathedrals = CLLocationCoordinate2D (latitude: 33.844502990031124, longitude: -116.45834321534426)
        let firehouse = CLLocationCoordinate2D (latitude: 33.78103817982461, longitude: -116.46700744788512)
        let perfectunion = CLLocationCoordinate2D (latitude: 33.778193459376865, longitude: -116.45877843062743)
        let lizards = CLLocationCoordinate2D (latitude: 33.78104263855992, longitude: -116.46340792338714)
        let cactus = CLLocationCoordinate2D (latitude: 33.782598723009976, longitude: -116.46699671904906)
        let swisscheese = CLLocationCoordinate2D (latitude: 33.78121541437478, longitude: -116.46472086469993)
        let newbeginning = CLLocationCoordinate2D (latitude: 33.78049421237406, longitude: -116.46463101069793)
        let thunderbolt = CLLocationCoordinate2D (latitude: 33.80140187863324, longitude: -116.46646603445436)
        let tictoc = CLLocationCoordinate2D (latitude: 33.80156235478469, longitude: -116.45524367193605)
        let wheeloftime = CLLocationCoordinate2D (latitude: 33.815987530910135, longitude: -116.45892863433227)         
        let artevita = CLLocationCoordinate2D (latitude: 33.7826633, longitude: -116.46041969999999)
        let coachellaart = CLLocationCoordinate2D (latitude: 33.78012700000001, longitude: -116.46571840000001)
        let colinfisher = CLLocationCoordinate2D (latitude: 33.7819228, longitude: -116.46002010000001)
        let garycreative = CLLocationCoordinate2D (latitude: 33.782660, longitude: -116.462141)
        let lesliejean = CLLocationCoordinate2D (latitude: 33.78404799999999, longitude: -116.4635222)
        let rebeccafine = CLLocationCoordinate2D (latitude: 33.782487, longitude: -116.460564)        
        let agnes = CLLocationCoordinate2D (latitude: 33.77571242620008, longitude: -116.46372063254091)
       let willardprice = CLLocationCoordinate2D (latitude: 33.77489419346815, longitude: -116.46667910908434)
       let adobe = CLLocationCoordinate2D (latitude: 33.77479870632753, longitude: -116.46673050629039)
        let valsamuelson = CLLocationCoordinate2D (latitude: 33.76802162366799, longitude: -116.46920998147584)
        let gallito = CLLocationCoordinate2D (latitude: 33.7794358, longitude: -116.4612692)        
        let townsquare = CLLocationCoordinate2D (latitude: 33.7810365, longitude: -116.46464559999998)
        let ocotillo = CLLocationCoordinate2D (latitude: 33.805963, longitude: -116.46349980000002)
        let century = CLLocationCoordinate2D (latitude: 33.8269913, longitude: -116.4424588)
        let denniskeat = CLLocationCoordinate2D (latitude: 33.8304982, longitude: -116.45744730000001)
        let memorial = CLLocationCoordinate2D (latitude: 33.78318512716751, longitude: -116.46681405767208)
        let patriot = CLLocationCoordinate2D (latitude: 33.8019902897174, longitude: -116.44000872473146)
        let panorama = CLLocationCoordinate2D (latitude: 33.83861734636407, longitude: -116.46799619895023)
        let secondst = CLLocationCoordinate2D (latitude: 33.78069442561766, longitude: -116.45910418200071)
        let dogpark = CLLocationCoordinate2D (latitude: 33.7804269, longitude: -116.46041309999998)


    }

}

Utilities.swift:

import UIKit
import MapKit

func showSimpleAlertWithTitle(title: String!, message: String, viewController: UIViewController) {
    let alert = UIAlertController(title: title, message: message, preferredStyle: .Alert)
    let action = UIAlertAction(title: "OK", style: .Cancel, handler: nil)
    alert.addAction(action)
    viewController.presentViewController(alert, animated: true, completion: nil)
}

UserLocation.swift:

import UIKit
import CoreLocation

class UserLocation: UIViewController, CLLocationManagerDelegate {
    var locationManager = CLLocationManager()

    override func viewDidLoad() {
        super.viewDidLoad()

        if (CLLocationManager.locationServicesEnabled()) {
            locationManager = CLLocationManager()
            locationManager.delegate = self
            locationManager.desiredAccuracy = kCLLocationAccuracyBest
            locationManager.requestAlwaysAuthorization()
            locationManager.startUpdatingLocation()
        }

        locationManager.delegate = self
        locationManager.requestAlwaysAuthorization()

    }

}

GeoLocationViewController.swift:

import UIKit
import CoreLocation

class GeoLocationViewController: UIViewController, CLLocationManagerDelegate {

    let locationManager = CLLocationManager()

    override func viewDidLoad() {
        super.viewDidLoad()

        locationManager.delegate = self
        locationManager.requestAlwaysAuthorization()

        // Do any additional setup after loading the view.
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

    func regionWithGeotification(geotification: Locations) -> CLCircularRegion {
        // 1
        let region = CLCircularRegion(center: geotification.coordinate, radius: geotification.radius, identifier: geotification.identifier)
        // 2
        region.notifyOnEntry = (geotification.eventType == .OnEntry)
        region.notifyOnExit = !region.notifyOnEntry
        return region
    }

    func startMonitoringGeotification(geotification: Locations) {
        // 1
        if !CLLocationManager.isMonitoringAvailableForClass(CLCircularRegion) {
            showSimpleAlertWithTitle("Error", message: "Geofencing is not supported on this device!", viewController: self)
            return
        }
        // 2
        if CLLocationManager.authorizationStatus() != .AuthorizedAlways {
            showSimpleAlertWithTitle("Warning", message: "Your geotification is saved but will only be activated once you grant permission to access the device location.", viewController: self)
        }
        // 3
        let region = regionWithGeotification(geotification)
        // 4
        locationManager.startMonitoringForRegion(region)
    }

    func stopMonitoringGeotification(geotification: Locations) {
        for region in locationManager.monitoredRegions {
            if let circularRegion = region as? CLCircularRegion {
                if circularRegion.identifier ==  geotification.identifier {
                    locationManager.stopMonitoringForRegion(circularRegion)
                }
            }
        }
    }

    func locationManager(manager: CLLocationManager, monitoringDidFailForRegion region: CLRegion?, withError error: NSError) {
        print("Monitoring failed for region with identifier: (region!.identifier)")
    }

    func locationManager(manager: CLLocationManager, didFailWithError error: NSError) {
        print("Location Manager failed with the following error: (error)")
    }

}

推薦答案

首先，改回 startMonitoringGeotification()、regionWithGeotification() 和 stopMonitoringGeotification() 來學習一個 Geotification，就像 Ray Wenderlich 教程一樣.確保您已將文件 Geotification.swift 從他的起始代碼添加到您的項目中.

First and foremost, change back startMonitoringGeotification(), regionWithGeotification(), and stopMonitoringGeotification() to take in a Geotification like the Ray Wenderlich tutorial. Make sure you have added the file Geotification.swift from his starter code to your project.

另外，確保您的 Main.storyboard 啟動您的 ViewController.如果沒有這一步，您的任何代碼都不會運行.

Also, make sure your Main.storyboard launches your ViewController. Without this step, none of your code will run.

1) 在 Locations.swift 中更簡單地重新定義您的 Locations 類:

1) redefine your Locations class more simply in Locations.swift:

import UIKit
import MapKit

class Locations {

  static let locations:[String:CLLocationCoordinate2D] = [
    "buddyrogers" : CLLocationCoordinate2D(latitude: 33.815995425565184, longitude: -116.44107442645873),
    "diamond"     : CLLocationCoordinate2D(latitude: 33.802168595307814, longitude: -116.45711048941041),
     . 
     .    // add your locations
     .
    ]
  }
}

就像@hungry-yeti 建議的那樣

like the @hungry-yeti suggested

2) 您可以在 GeotificationViewController 類中定義 showSimpleAlertWithTitle().嘗試在您的 ViewDidLoad() 中調(diào)用它來測試它.您現(xiàn)在可以刪除 Utilities.swift.

2) You can define showSimpleAlertWithTitle() in your GeotificationViewController class. Try calling it in your ViewDidLoad() to test it. You can now delete Utilities.swift.

3) 我認為你可以忽略/刪除 UserLocation.swift，這似乎沒有必要

3) I think you can ignore/remove UserLocation.swift, this seems unnecessary

4) 將此代碼放入GeotificationViewController的ViewDidLoad:

4) Put this code inside GeotificationViewController's ViewDidLoad:

let radius = CLLocationDistance(8046.72) // 5 miles in meters

for location in Locations.locations {
  let g = Geotification(coordinate: location.1, radius: radius, identifier: location.0, note: "test", eventType: EventType.OnEntry)
    startMonitoringGeotification(g)
}

5) 我希望這有助于并簡化您的代碼.派對，如果您有任何問題，請在此處回復(fù).

5) I hope this helps and simplifies your code. Party on, reply here if you have any issues.

這篇關(guān)于Swift:用戶位置附近的地理圍欄/地理位置的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網(wǎng)！