Ios 为什么是'；CLLocationManager.locationServicesEnabled（）；默认情况下为true？

我在Xcode中的一个简单、全新的项目中注意到了以下内容

如果在ViewController.swift文件中导入CoreLocation，然后在viewDidLoad方法中添加

打印（CLLocationManager.locationServicesEnabled（））

，当应用程序在模拟器中运行时，Xcode打印出true。我原以为默认情况下位置服务会被禁用，但正如你自己所看到的，情况恰恰相反。如果我愿意，我可以添加更多的代码来收集有关用户的位置信息，所有这些都不需要请求许可

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有人能解释一下原因吗？

据我所知，CLLocationManager.locationServicesEnabled（）将返回设备上是否启用了位置服务，而不仅仅是该应用程序。因此，即使该应用程序禁用了位置服务，但如果该设备启用了位置服务，我认为根据文档，这仍然会返回true：

在我的应用程序中，我将其设置为：

    //check if location services are enabled at all
    if CLLocationManager.locationServicesEnabled() {

        switch(CLLocationManager.authorizationStatus()) {
        //check if services disallowed for this app particularly
        case .Restricted, .Denied:
            print("No access")
            var accessAlert = UIAlertController(title: "Location Services Disabled", message: "You need to enable location services in settings.", preferredStyle: UIAlertControllerStyle.Alert)

            accessAlert.addAction(UIAlertAction(title: "Okay!", style: .Default, handler: { (action: UIAlertAction!) in UIApplication.sharedApplication().openURL(NSURL(string:UIApplicationOpenSettingsURLString)!)
            }))

            presentViewController(accessAlert, animated: true, completion: nil)

        //check if services are allowed for this app
        case .AuthorizedAlways, .AuthorizedWhenInUse:
            print("Access! We're good to go!")
        //check if we need to ask for access
        case .NotDetermined:
            print("asking for access...")
            manager.requestAlwaysAuthorization()
        }
    //location services are disabled on the device entirely!
    } else {
        print("Location services are not enabled")

    }

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祝你好运

Swift 3.1返回状态和错误消息的功能

func isLocationEnabled() -> (status: Bool, message: String) {
    if CLLocationManager.locationServicesEnabled() {
        switch(CLLocationManager.authorizationStatus()) {
        case .notDetermined, .restricted, .denied:
            return (false,"No access")
        case .authorizedAlways, .authorizedWhenInUse:
            return(true,"Access")
        }
    } else {
        return(false,"Turn On Location Services to Allow App to Determine Your Location")
    }
}

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完美的正是我需要的知识。太棒了！如果我帮忙，你可以把它标记为答案：）