Question

我在iOS 7上运行良好的应用无法与iOS 8 SDK配合使用。

CLLocationManager未返回位置，我在设置 - >＆gt;下看不到我的应用位置服务。我在这个问题上进行了谷歌搜索，但没有出现任何问题。可能有什么不对？

Answer 1

我最终解决了自己的问题。

显然在iOS 8 SDK中，在开始位置更新之前需要requestAlwaysAuthorization（用于后台位置）或requestWhenInUseAuthorization（仅在前景时的位置）调用CLLocationManager。

NSLocationAlwaysUsageDescription中还需要NSLocationWhenInUseUsageDescription或Info.plist键，并在提示中显示消息。添加这些解决了我的问题。

希望它可以帮助别人。

编辑：有关更多信息，请查看：Core-Location-Manager-Changes-in-ios-8

Answer 2

我正在把头发拉出来同样的问题。 Xcode为您提供错误：

尝试在不提示的情况下启动MapKit位置更新位置授权。必须先致电-[CLLocationManager requestWhenInUseAuthorization]或-[CLLocationManager requestAlwaysAuthorization]。

但即使您实施上述方法之一，它也不会提示用户，除非{。1}}或NSLocationAlwaysUsageDescription的info.plist中有条目。

将以下行添加到info.plist，其中字符串值表示您需要访问用户位置的原因

NSLocationWhenInUseUsageDescription

我认为自从我在Xcode 5中启动此项目后，这些条目可能已经丢失。我猜测Xcode 6可能会为这些密钥添加默认条目但尚未确认。

您可以在这两个设置here

上找到更多相关信息

Answer 3

为确保向后兼容iOS 7，您应检查用户是否在运行iOS 8或iOS 7.例如：

#define IS_OS_8_OR_LATER ([[[UIDevice currentDevice] systemVersion] floatValue] >= 8.0)

//In ViewDidLoad
if(IS_OS_8_OR_LATER) {
   [self.locationManager requestAlwaysAuthorization];
}

[self.locationManager startUpdatingLocation];

Answer 4

- (void)startLocationManager
{
    locationManager = [[CLLocationManager alloc] init];
    locationManager.delegate = self;
    locationManager.distanceFilter = kCLDistanceFilterNone; //whenever we move
    locationManager.desiredAccuracy = kCLLocationAccuracyBest;

    [locationManager startUpdatingLocation];
    [locationManager requestWhenInUseAuthorization]; // Add This Line


}

以及您的info.plist文件 enter image description here

Answer 5

根据Apple文档：

从iOS 8开始，您需要在应用的Info.plist文件中显示NSLocationWhenInUseUsageDescription或NSLocationAlwaysUsageDescription键值。然后，在注册位置更新之前，还需要通过根据您的需要致电[self.myLocationManager requestWhenInUseAuthorization]或[self.myLocationManager requestAlwaysAuthorization]来请求用户的许可。您输入Info.plist的字符串将显示在随后的对话框中。

如果用户授予权限，则照常营业。如果他们拒绝许可，则代理人不会被告知位置更新。

Answer 6

- (void)viewDidLoad
{

    [super viewDidLoad];
    self.locationManager = [[CLLocationManager alloc] init];

    self.locationManager.delegate = self;
    if([self.locationManager respondsToSelector:@selector(requestAlwaysAuthorization)]){
        NSUInteger code = [CLLocationManager authorizationStatus];
        if (code == kCLAuthorizationStatusNotDetermined && ([self.locationManager respondsToSelector:@selector(requestAlwaysAuthorization)] || [self.locationManager respondsToSelector:@selector(requestWhenInUseAuthorization)])) {
            // choose one request according to your business.
            if([[NSBundle mainBundle] objectForInfoDictionaryKey:@"NSLocationAlwaysUsageDescription"]){
                [self.locationManager requestAlwaysAuthorization];
            } else if([[NSBundle mainBundle] objectForInfoDictionaryKey:@"NSLocationWhenInUseUsageDescription"]) {
                [self.locationManager  requestWhenInUseAuthorization];
            } else {
                NSLog(@"Info.plist does not contain NSLocationAlwaysUsageDescription or NSLocationWhenInUseUsageDescription");
            }
        }
    }
    [self.locationManager startUpdatingLocation];
}

>  #pragma mark - CLLocationManagerDelegate

    - (void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error
    {
        NSLog(@"didFailWithError: %@", error);
        UIAlertView *errorAlert = [[UIAlertView alloc]
                                   initWithTitle:@"Error" message:@"Failed to Get Your Location" delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil];
        [errorAlert show];
    }

    - (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation
    {
        NSLog(@"didUpdateToLocation: %@", newLocation);
        CLLocation *currentLocation = newLocation;

        if (currentLocation != nil) {
            longitudeLabel.text = [NSString stringWithFormat:@"%.8f", currentLocation.coordinate.longitude];
            latitudeLabel.text = [NSString stringWithFormat:@"%.8f", currentLocation.coordinate.latitude];
        }
    }

在iOS 8中，您需要做两件额外的事情才能让位置正常工作：添加 Info.plist的一个键，并从该位置请求授权经理要求它开始。新的有两个Info.plist键位置授权。需要这些键中的一个或两个。如果这两个键都没有，你可以调用startUpdatingLocation但是位置管理员实际上不会启动。它不会发送失败消息给代表（因为它从未开始，它不能失败）。如果你添加一个或两个键但忘记它也会失败明确请求授权。所以你需要做的第一件事是将以下一个或两个键添加到Info.plist文件中：

NSLocationWhenInUseUsageDescription
NSLocationAlwaysUsageDescription

这两个键都带有一个字符串

描述了您需要位置服务的原因。您可以输入一个字符串，如“需要位置才能找到你所在的位置” 这与iOS 7一样，可以在InfoPlist.strings文件中进行本地化。

enter image description here

Answer 7

我的解决方案可以在Xcode 5中编译：

#ifdef __IPHONE_8_0
    NSUInteger code = [CLLocationManager authorizationStatus];
    if (code == kCLAuthorizationStatusNotDetermined && ([self.locationManager respondsToSelector:@selector(requestAlwaysAuthorization)] || [self.locationManager respondsToSelector:@selector(requestWhenInUseAuthorization)])) {
        // choose one request according to your business.
        if([[NSBundle mainBundle] objectForInfoDictionaryKey:@"NSLocationAlwaysUsageDescription"]){
            [self.locationManager requestAlwaysAuthorization];
        } else if([[NSBundle mainBundle] objectForInfoDictionaryKey:@"NSLocationWhenInUseUsageDescription"]) {
            [self.locationManager  requestWhenInUseAuthorization];
        } else {
            NSLog(@"Info.plist does not contain NSLocationAlwaysUsageDescription or NSLocationWhenInUseUsageDescription");
        }
    }
#endif
    [self.locationManager startUpdatingLocation];

Answer 8

询问位置的旧代码在iOS 8中无效。您可以尝试使用此方法进行位置授权：

- (void)requestAlwaysAuthorization
{
    CLAuthorizationStatus status = [CLLocationManager authorizationStatus];

    // If the status is denied or only granted for when in use, display an alert
    if (status == kCLAuthorizationStatusAuthorizedWhenInUse || status ==        kCLAuthorizationStatusDenied) {
        NSString *title;
        title = (status == kCLAuthorizationStatusDenied) ? @"Location services are off" :   @"Background location is not enabled";
        NSString *message = @"To use background location you must turn on 'Always' in the Location Services Settings";

        UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:title
                                                            message:message
                                                           delegate:self
                                                  cancelButtonTitle:@"Cancel"
                                                  otherButtonTitles:@"Settings", nil];
        [alertView show];
    }
    // The user has not enabled any location services. Request background authorization.
    else if (status == kCLAuthorizationStatusNotDetermined) {
        [self.locationManager requestAlwaysAuthorization];
    }
}

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
    if (buttonIndex == 1) {
        // Send the user to the Settings for this app
        NSURL *settingsURL = [NSURL URLWithString:UIApplicationOpenSettingsURLString];
        [[UIApplication sharedApplication] openURL:settingsURL];
    }
}

Answer 9

在iOS 8中，您需要做两件额外的事情才能让位置正常工作：在Info.plist中添加一个密钥，并向位置管理员请求授权，要求其启动

<强> info.plist中：

<key>NSLocationUsageDescription</key>
<string>I need location</string>
<key>NSLocationAlwaysUsageDescription</key>
<string>I need location</string>
<key>NSLocationWhenInUseUsageDescription</key>
<string>I need location</string>

将此添加到您的代码中

if (IS_OS_8_OR_LATER)
{
    [locationmanager requestWhenInUseAuthorization];

    [locationmanager requestAlwaysAuthorization];
}

Answer 10

Swift开发人员的一个常见错误：

首先确保为NSLocationWhenInUseUsageDescription或NSLocationAlwaysUsageDescription的plist添加值。

如果您仍然没有看到弹出要求授权的窗口，请查看您是否将行var locationManager = CLLocationManager()放入View Controller的viewDidLoad } 方法。如果您这样做，那么即使您致电locationManager.requestWhenInUseAuthorization()，也不会显示任何内容。这是因为在viewDidLoad执行之后，将取消分配（清除）locationManager变量。

解决方案是将行var locationManager = CLLocationManager()定位在类方法的顶部。

Answer 11

在[locationManager startUpdatingLocation];之前，添加iOS8位置服务请求：

if([locationManager respondsToSelector:@selector(requestAlwaysAuthorization)])
    [locationManager requestAlwaysAuthorization];

修改您的应用Info.plist并添加键NSLocationAlwaysUsageDescription，其中包含将向用户显示的字符串值（例如，We do our best to preserve your battery life.）

如果您的应用仅在应用开放时需要位置服务，请替换：

requestAlwaysAuthorization requestWhenInUseAuthorization和

NSLocationAlwaysUsageDescription与NSLocationWhenInUseUsageDescription。

Answer 12

我正在开发一款升级到iOS 8且位置服务停止运行的应用。您可能会在调试区域中得到错误，如下所示：

Trying to start MapKit location updates without prompting for location authorization. Must call -[CLLocationManager requestWhenInUseAuthorization] or -[CLLocationManager requestAlwaysAuthorization] first.

我做了最少侵入性的程序。首先将NSLocationAlwaysUsageDescription条目添加到info.plist：

Enter image description here

注意我没有填写此密钥的值。这仍然有效，我并不担心，因为这是一个内部应用程序。此外，已经有一个标题要求使用位置服务，所以我不想做任何多余的事情。

接下来，我为iOS 8创建了一个条件：

if ([self.locationManager respondsToSelector:@selector(requestAlwaysAuthorization)]) {
    [_locationManager requestAlwaysAuthorization];
}

此后调用locationManager:didChangeAuthorizationStatus:方法：

- (void)locationManager:(CLLocationManager *)manager didChangeAuthorizationStatus:  (CLAuthorizationStatus)status
{
    [self gotoCurrenLocation];
}

现在一切正常。与往常一样，请查看documentation。

Answer 13

具有向后兼容性的解决方案：

SEL requestSelector = NSSelectorFromString(@"requestWhenInUseAuthorization");
if ([CLLocationManager authorizationStatus] == kCLAuthorizationStatusNotDetermined &&
    [self.locationManager respondsToSelector:requestSelector]) {
    [self.locationManager performSelector:requestSelector withObject:NULL];
} else {
    [self.locationManager startUpdatingLocation];
}

在Info.plist中设置NSLocationWhenInUseUsageDescription键

Answer 14

具有向后兼容性且不会产生Xcode警告的解决方案：

SEL requestSelector = NSSelectorFromString(@"requestWhenInUseAuthorization");
if ([CLLocationManager authorizationStatus] == kCLAuthorizationStatusNotDetermined &&
  [self.locationManager respondsToSelector:requestSelector]) {
((void (*)(id, SEL))[self.locationManager methodForSelector:requestSelector])(self.locationManager, requestSelector);
  [self.locationManager startUpdatingLocation];
} else {
  [self.locationManager startUpdatingLocation];
}

在NSLocationWhenInUseUsageDescription中设置Info.plist密钥。

适用于iOS版本11.0 + ：在NSLocationAlwaysAndWhenInUseUsageDescription设置Info.plist密钥。以及其他2个键。

Answer 15

这是ios 8的问题将其添加到您的代码中

if (IS_OS_8_OR_LATER)
{
    [locationmanager requestWhenInUseAuthorization];

    [locationmanager requestAlwaysAuthorization];
}

和info.plist：

 <key>NSLocationUsageDescription</key>
 <string>I need location</string>
 <key>NSLocationAlwaysUsageDescription</key>
 <string>I need location</string>
 <key>NSLocationWhenInUseUsageDescription</key>
 <string>I need location</string>

Answer 16

Objective-C程序 请按照以下说明操作：

适用于iOS-11 对于iOS 11，请查看此答案：iOS 11 location access

需要在plist中添加两个键并提供如下图所示的信息：

 1. NSLocationAlwaysAndWhenInUseUsageDescription 
 2. NSLocationWhenInUseUsageDescription
 3. NSLocationAlwaysUsageDescription

适用于iOS-10及以下版本：

NSLocationWhenInUseUsageDescription

locationManager = [[CLLocationManager alloc] init];
locationManager.delegate = self;
locationManager.desiredAccuracy = kCLLocationAccuracyThreeKilometers;
if([locationManager respondsToSelector:@selector(requestWhenInUseAuthorization)]){
    [locationManager requestWhenInUseAuthorization];
}else{
    [locationManager startUpdatingLocation];
}

委派方法

#pragma mark - Lolcation Update 
- (void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error
{
    NSLog(@"didFailWithError: %@", error);
    UIAlertView *errorAlert = [[UIAlertView alloc]
                               initWithTitle:@"Error" message:@"Failed to Get Your Location" delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil];
    [errorAlert show];
}
-(void)locationManager:(CLLocationManager *)manager didChangeAuthorizationStatus:(CLAuthorizationStatus)status
{
    switch (status) {
        case kCLAuthorizationStatusNotDetermined:
        case kCLAuthorizationStatusRestricted:
        case kCLAuthorizationStatusDenied:
        {
            // do some error handling
        }
            break;
        default:{
            [locationManager startUpdatingLocation];
        }
            break;
    }
}
- (void)locationManager:(CLLocationManager *)manager
     didUpdateLocations:(NSArray *)locations
{
    CLLocation *location = [locations lastObject];
    userLatitude =  [NSString stringWithFormat:@"%f", location.coordinate.latitude] ;
    userLongitude =  [NSString stringWithFormat:@"%f",location.coordinate.longitude];
    [locationManager stopUpdatingLocation];
}

快速程序

按照以下说明操作：

适用于iOS-11 对于iOS 11，请查看此答案：iOS 11 location access

需要在plist中添加两个键并提供如下图所示的信息：

 1. NSLocationAlwaysAndWhenInUseUsageDescription 
 2. NSLocationWhenInUseUsageDescription
 3. NSLocationAlwaysUsageDescription

适用于iOS-10及以下版本：

import CoreLocation
class ViewController: UIViewController ,CLLocationManagerDelegate {
var locationManager = CLLocationManager()

//MARK- Update Location 
func updateMyLocation(){
    locationManager.delegate = self;
    locationManager.desiredAccuracy = kCLLocationAccuracyThreeKilometers;
    if locationManager.respondsToSelector(#selector(CLLocationManager.requestWhenInUseAuthorization)){
       locationManager.requestWhenInUseAuthorization()
    }
    else{
        locationManager.startUpdatingLocation()
    }
}

委派方法

//MARK: Location Update
func locationManager(manager: CLLocationManager, didFailWithError error: NSError) {
    NSLog("Error to update location :%@",error)
}
func locationManager(manager: CLLocationManager, didChangeAuthorizationStatus status: CLAuthorizationStatus) {
    switch status {
    case .NotDetermined: break
    case .Restricted: break
    case .Denied:
            NSLog("do some error handling")
        break
    default:
        locationManager.startUpdatingLocation()
    }
}
func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
     let location = locations.last! as CLLocation
    var latitude = location.coordinate.latitude
    var longitude = location.coordinate.longitude

}

Answer 17

要在iOS 8中访问用户位置，您必须添加

NSLocationAlwaysUsageDescription in the Info.plist

这将要求用户获得获取当前位置的权限。

Answer 18

对于使用 Xamarin 的用户，我必须手动将密钥 NSLocationWhenInUseUsageDescription 添加到info.plist中，因为它在Xamarin的下拉列表中不可用5.5.3 Build 6或XCode 6.1 - 列表中只有NSLocationUsageDescription，导致CLLocationManager继续无声地失败。

Answer 19

        // ** Don't forget to add NSLocationWhenInUseUsageDescription in MyApp-Info.plist and give it a string

        self.locationManager = [[CLLocationManager alloc] init];
        self.locationManager.delegate = self;
        // Check for iOS 8. Without this guard the code will crash with "unknown selector" on iOS 7.
        if ([self.locationManager respondsToSelector:@selector(requestWhenInUseAuthorization)]) {
            [self.locationManager requestWhenInUseAuthorization];
        }
        [self.locationManager startUpdatingLocation];


    // Location Manager Delegate Methods    
    - (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations
    {
        NSLog(@"%@", [locations lastObject]);

}

Answer 20

保持 Cocoa Keys 信息随时可以获取这些更新，以下是链接：

https://developer.apple.com/library/ios/documentation/General/Reference/InfoPlistKeyReference/Articles/CocoaKeys.html#//apple_ref/doc/uid/TP40009251-SW26

享受。

Answer 21

我在iOS9中遇到类似的错误（使用Xcode 7和Swift 2）： 尝试在不提示位置授权的情况下启动MapKit位置更新。必须先调用 - [CLLocationManager requestWhenInUseAuthorization]或 - [CLLocationManager requestAlwaysAuthorization]。 我正在学习一个教程，但导师使用的是iOS8和Swift 1.2。 Xcode 7和Swift 2有一些变化，我找到了这个代码，它对我来说很好（如果有人需要帮助）：

import UIKit
import MapKit
import CoreLocation

class MapViewController: UIViewController, MKMapViewDelegate, CLLocationManagerDelegate {

    // MARK: Properties
    @IBOutlet weak var mapView: MKMapView!

    let locationManager = CLLocationManager()

    override func viewDidLoad() {
        super.viewDidLoad()

        self.locationManager.delegate = self
        self.locationManager.desiredAccuracy = kCLLocationAccuracyBest
        self.locationManager.requestWhenInUseAuthorization()
        self.locationManager.startUpdatingLocation()
        self.mapView.showsUserLocation = true

    }

    // MARK: - Location Delegate Methods

    func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
        let location = locations.last
        let center = CLLocationCoordinate2D(latitude: location!.coordinate.latitude, longitude: location!.coordinate.longitude)
        let region = MKCoordinateRegion(center: center, span: MKCoordinateSpan(latitudeDelta: 1, longitudeDelta: 1))
        self.mapView.setRegion(region, animated: true)
    }

    func locationManager(manager: CLLocationManager, didFailWithError error: NSError) {
        print("Errors: " + error.localizedDescription)
    }
}

最后，我把它放在info.plist中：信息属性列表： NSLocationWhenInUseUsageDescription 价值：应用需要员工的位置服务器

Answer 22

为了访问iOS中的用户位置。您需要添加两个键

<强> NSLocationWhenInUseUsageDescription

<强> NSLocationAlwaysUsageDescription

进入Info.plist文件。

    <key>NSLocationWhenInUseUsageDescription</key>
    <string>Because I want to know where you are!</string>
    <key>NSLocationAlwaysUsageDescription</key>
    <string>Want to know where you are!</string>

见下图。

Answer 23

为所有拥有多个Info.plist文件的人提供帮助......

find . -name Info.plist | xargs -I {} /usr/libexec/PlistBuddy -c 'Add NSLocationWhenInUseUsageDescription string' {}

它会将所需的标记添加到当前目录（和子文件夹）中的所有Info.plist文件中。

另一个是：

find . -name Info.plist | xargs -I {} /usr/libexec/PlistBuddy -c 'Set NSLocationWhenInUseUsageDescription $YOURDESCRIPTION' {}

它会将您的描述添加到所有文件中。

Answer 24

添加密钥NSLocationWhenInUseUsageDescription或NSLocationAlwaysUsageDescription（使用后台GPS），并在每个目标的每个info.plist上使用字符串。
通过运行来获取许可：

[self initLocationManager：locationManager];

initLocationManager的位置：

// asks for GPS authorization on iOS 8
-(void) initLocationManager:(CLLocationManager *) locationManager{

    locationManager = [[CLLocationManager alloc]init];

    if([locationManager respondsToSelector:@selector(requestAlwaysAuthorization)])
        [locationManager requestAlwaysAuthorization];
}

请记住，如果每个目标的每个info.plist上都没有密钥，则该应用不会询问用户。 if提供与iOS 7的兼容性，respondsToSelector:方法保证了未来的兼容性，而不仅仅是解决iOS 7和8的问题。

Answer 25

对我来说问题是CLLocationManagerDelegate的类是私有的，它阻止了所有委托方法的调用。猜猜这不是一个非常普遍的情况，但我想如果t帮助任何人我会提到它。

Answer 26

我在 iOS 8.4，iPad mini 2中的InfoPlist.strings中添加了这些密钥。它也有效。我没有在NSLocationWhenInUseUsageDescription中设置任何密钥，例如Info.plist。

InfoPlist.strings ：

"NSLocationWhenInUseUsageDescription" = "I need GPS information....";

Base on this thread，它说，as in iOS 7，可以在InfoPlist.strings中进行本地化。在我的测试中，可以直接在文件InfoPlist.strings中配置这些密钥。

所以你需要做的第一件事就是添加一个或两个＆gt;以下密钥到您的Info.plist文件：


NSLocationWhenInUseUsageDescription

NSLocationAlwaysUsageDescription


这两个键都带有一个字符串，它描述了你的原因   需要位置服务。您可以输入“位置为”等字符串   需要找出你的位置“，如 iOS 7 ，可以   本地化在InfoPlist.strings文件中。

<强>更新

我认为@IOS's method is better.使用空值为Info.plist添加密钥，并将本地化字符串添加到InfoPlist.strings。

位置服务在iOS 8中不起作用

26 个答案: