首页 文章

Swift requestWhenInUseAuthorization无效

提问于
浏览 次
4

我正在使用swift为iOS 9.3编写应用程序，需要一张 Map 来显示用户位置 . 我初始化CLLocationManager及其委托，我配置info.plist隐私 - 位置使用说明字符串并调用requestWhenInUseAuthorization但它不显示任何授权请求 .

这是我的代码：

import UIKit
import MapKit

class DetailController: UIViewController, CLLocationManagerDelegate {

    var locManager: CLLocationManager!

    @IBOutlet var myMap: MKMapView!

    override func viewDidLoad() {
        super.viewDidLoad()

        mostraPosizione()
    }

    func mostraPosizione(){
        locManager = CLLocationManager()
        locManager.delegate = self
        locManager.desiredAccuracy = kCLLocationAccuracyBest

        let authorizationStatus = CLLocationManager.authorizationStatus()

        if (authorizationStatus == CLAuthorizationStatus.NotDetermined) {
            locManager.requestWhenInUseAuthorization()
        } else {
            locManager.startUpdatingLocation()
        }


        myMap.showsUserLocation = true
    }

    func locManager(manager: CLLocationManager, 
    didChangeAuthorizationStatus status: CLAuthorizationStatus) {

        if (status == CLAuthorizationStatus.NotDetermined) {
            locManager.requestWhenInUseAuthorization()

        } else {
            locManager.startUpdatingLocation()
        }
    }
}

以及来自我的info.plist的截图
info.plist

Xcode输出：

尝试在不提示位置授权的情况下启动MapKit位置更新 . 必须首先调用 - [CLLocationManager requestWhenInUseAuthorization]或 - [CLLocationManager requestAlwaysAuthorization] .

我正在iPhone 5（iOS 9.3）模拟器上测试它 .

What's the problem with this stuff? 有没有人有任何建议？

swift location cllocationmanager

3 回答

  • 2

    我想是因为

    let authorizationStatus = CLLocationManager.authorizationStatus()

    是 nil 所以你的 requestWhenInUseAuthorization() 从未被调用过 .

    let authorizationStatus = CLLocationManager.authorizationStatus()

    if (authorizationStatus == CLAuthorizationStatus.NotDetermined) || (authorizationStatus == nil) {
        locManager.requestWhenInUseAuthorization()
    } else {
        locManager.startUpdatingLocation()
    }

    应该工作 .

    Edit ：

    如果用户拒绝请求，您还应该处理此案例

    if (authorizationStatus == CLAuthorizationStatus.Denied ) {
  // Display a message, do what you want 
}

    实际上，一旦用户拒绝授权，您就无法再次显示弹出窗口，用户必须进入应用程序设置并自行设置使用其位置的授权 . 但是，您现在可以直接从应用程序链接到设置，因此对用户来说更容易 .

    // Open the settings of your app
if let url = NSURL(string:UIApplicationOpenSettingsURLString) {
    UIApplication.sharedApplication().openURL(url)
}
    回复于
  • 2

    将NSLocationWhenInUseUsageDescription键添加到info.plist是解决方案 .

    回复于
  • 5

    试试这个尺码：

    override func viewDidLoad() {
    super.viewDidLoad()

    //put code here
    locManager = CLLocationManager()
    locManager.delegate = self
    locManager.desiredAccuracy = kCLLocationAccuracyBest
}

override func viewDidAppear(_ animated: Bool) {
    super.viewDidAppear(animated)

    //make sure the view is loaded first before adding subviews
    mostraPosizione()
}

func mostraPosizione(){
    let authorizationStatus = CLLocationManager.authorizationStatus()

    if (authorizationStatus == .authorizedWhenInUse) {
        locManager.startUpdatingLocation()
        myMap.showsUserLocation = true
    } else {
        locManager.requestWhenInUseAuthorization()
        mostraPosizione()
    }
}

    请求未显示的原因是因为在调用请求时未完成加载视图 . 使用viewDidAppear（）修复了该问题 .

    我也对代码进行了一些更改，这看起来效果很好 . 我只对下面的代码进行了更改，其他功能保持不变 .

    我在Swift 3中编写这段代码，但是这些代码是相同的 .

    回复于

相关问题