我在 iOS 7 上运行良好的应用程序不适用于 iOS 8 SDK。
CLLocationManager不返回位置，我也没有在“设置” -> “位置服务”下看到我的应用程序。我对这个问题进行了谷歌搜索，但没有任何结果。有什么问题？
问问题
279413 次
26 回答
1095
我最终解决了我自己的问题。
显然在 iOS 8 SDK 中，在开始位置更新之前需要调用requestAlwaysAuthorization（用于后台位置）或requestWhenInUseAuthorization（仅在前台时定位）调用。CLLocationManager
还需要输入NSLocationAlwaysUsageDescription或NSLocationWhenInUseUsageDescription键入Info.plist要在提示中显示的消息。添加这些解决了我的问题。
有关更多信息，请查看：Core-Location-Manager-Changes-in-ios-8
于 2014-06-05T14:58:19.103 回答
318
我正在用同样的问题拔头发。Xcode 给你错误：
尝试在
MapKit不提示位置授权的情况下开始位置更新。必须打电话-[CLLocationManager requestWhenInUseAuthorization]或-[CLLocationManager requestAlwaysAuthorization]先。
但即使您实现了上述方法之一，它也不会提示用户，除非 info.plist 中有NSLocationAlwaysUsageDescriptionor的条目NSLocationWhenInUseUsageDescription。
将以下行添加到您的 info.plist 中，其中字符串值表示您需要访问用户位置的原因
<key>NSLocationWhenInUseUsageDescription</key>
<string>This application requires location services to work</string>
<key>NSLocationAlwaysUsageDescription</key>
<string>This application requires location services to work</string>
我认为自从我在 Xcode 5 中开始这个项目以来，这些条目可能已经丢失。我猜 Xcode 6 可能会为这些键添加默认条目，但尚未确认。
您可以在此处找到有关这两个设置的更多信息
于 2014-06-05T15:58:17.173 回答
105
为确保向后兼容 iOS 7，您应该检查用户运行的是 iOS 8 还是 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];
于 2014-06-27T01:14:05.790 回答
51
- (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
}
和你的 info.plist 文件
于 2014-09-30T10:24:14.377 回答
30
根据苹果文档：
- https://developer.apple.com/documentation/corelocation/requesting_permission_to_use_location_services
- https://developer.apple.com/documentation/corelocation/cllocationmanager/1620562-requestwheninuseauthorization
从 iOS 8 开始，应用程序的 Info.plist 文件中需要存在 aNSLocationWhenInUseUsageDescription或NSLocationAlwaysUsageDescriptionkey 值。然后还需要在注册位置更新之前请求用户的许可，无论是通过电话[self.myLocationManager requestWhenInUseAuthorization]还是[self.myLocationManager requestAlwaysAuthorization]根据您的需要。您在 Info.plist 中输入的字符串随后将显示在随后的对话框中。
如果用户授予权限，一切照旧。如果他们拒绝许可，则不会通知代理人位置更新。
于 2014-06-08T22:16:08.220 回答
28
- (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定位工作：将密钥添加到您的 Info.plist 并从定位管理器请求授权以启动它。新的位置授权有两个 Info.plist 键。需要这些密钥中的一个或两个。如果两个键都不存在，您可以调用 startUpdatingLocation 但位置管理器实际上不会启动。它也不会向委托发送失败消息（因为它从未启动，所以它不会失败）。如果您添加一个或两个密钥但忘记明确请求授权，它也会失败。因此，您需要做的第一件事是将以下一个或两个键添加到您的 Info.plist 文件中：
- NSLocationWhenInUseUsageDescription
- NSLocationAlwaysUsageDescription
这两个键都有一个字符串
这是对您需要定位服务的原因的描述。您可以输入一个字符串，如“需要位置才能找出您所在的位置”，与 iOS 7 一样，可以在 InfoPlist.strings 文件中进行本地化。
于 2014-12-17T03:26:32.483 回答
19
我可以在 Xcode 5 中编译的解决方案：
#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];
于 2014-09-24T12:13:05.330 回答
17
询问位置的旧代码在 iOS 8 中不起作用。您可以尝试以下方法进行位置授权：
- (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];
}
}
于 2014-09-27T09:54:54.937 回答
13
在 iOS 8 中，你需要做两件额外的事情来让位置工作：向你的 Info.plist 添加一个密钥，并从位置管理器请求授权，要求它启动
信息列表：
<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];
}
于 2014-10-02T06:40:00.460 回答
11
Swift 开发人员的一个常见错误：
首先确保为NSLocationWhenInUseUsageDescription或向 plist 添加一个值NSLocationAlwaysUsageDescription。
如果您仍然没有看到弹出请求授权的窗口，请查看您是否将该行var locationManager = CLLocationManager()放入 View Controller 的viewDidLoad方法中。如果你这样做了，那么即使你打电话locationManager.requestWhenInUseAuthorization()，也不会出现任何东西。这是因为 viewDidLoad 执行后，locationManager 变量被释放（清除）。
解决方案是将行定位var locationManager = CLLocationManager()在类方法的顶部。
于 2015-02-17T22:40:17.870 回答
9
我正在开发一个升级到 iOS 8 的应用程序并且位置服务停止工作。您可能会在 Debug 区域中出现错误，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条目添加到您的 info.plist：
请注意，我没有填写此键的值。这仍然有效，我并不担心，因为这是一个内部应用程序。另外，已经有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];
}
在此之后调用该locationManager:didChangeAuthorizationStatus:方法：
- (void)locationManager:(CLLocationManager *)manager didChangeAuthorizationStatus: (CLAuthorizationStatus)status
{
[self gotoCurrenLocation];
}
现在一切正常。与往常一样，请查看文档。
于 2014-11-24T16:14:05.550 回答
9
在之前[locationManager startUpdatingLocation];，添加一个 iOS8 位置服务请求：
if([locationManager respondsToSelector:@selector(requestAlwaysAuthorization)])
[locationManager requestAlwaysAuthorization];
编辑您的应用程序并使用将向用户显示的字符串值Info.plist添加键（例如， ）NSLocationAlwaysUsageDescriptionWe do our best to preserve your battery life.
如果您的应用仅在应用打开时需要位置服务，请替换：
requestAlwaysAuthorizationrequestWhenInUseAuthorization和_
NSLocationAlwaysUsageDescription与NSLocationWhenInUseUsageDescription.
于 2014-11-11T14:20:27.390 回答
7
向后兼容的解决方案：
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
于 2014-09-11T05:22:19.730 回答
6
不产生 Xcode 警告的具有向后兼容性的解决方案：
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];
}
您NSLocationWhenInUseUsageDescription的Info.plist.
对于 iOS 版本 11.0+：NSLocationAlwaysAndWhenInUseUsageDescription您的Info.plist. 连同其他 2 个键。
于 2014-09-11T09:30:59.890 回答
5
这是 ios 8 的问题 将此添加到您的代码中
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>
于 2015-09-02T07:20:20.837 回答
4
要在 iOS 8 中访问用户位置，您必须添加，
NSLocationAlwaysUsageDescription in the Info.plist
这将要求用户获得他们当前位置的权限。
于 2014-11-17T04:49:38.010 回答
4
Objective-C 过程 遵循以下说明：
对于 iOS-11 对于 iOS 11 看看这个答案：iOS 11 位置访问
需要在 plist 中添加两个密钥并提供如下图所示的消息：
1. NSLocationAlwaysAndWhenInUseUsageDescription
2. NSLocationWhenInUseUsageDescription
3. NSLocationAlwaysUsageDescription
对于 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];
}
委托方法
#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
请按照以下说明进行操作：
对于 iOS-11 对于 iOS 11 看看这个答案：iOS 11 位置访问
需要在 plist 中添加两个密钥并提供如下图所示的消息：
1. NSLocationAlwaysAndWhenInUseUsageDescription
2. NSLocationWhenInUseUsageDescription
3. NSLocationAlwaysUsageDescription
对于 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()
}
}
委托方法
//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
}
于 2017-10-24T04:57:40.570 回答
3
对于那些使用Xamarin的人，我必须NSLocationWhenInUseUsageDescription手动将密钥添加到 info.plist，因为它在 Xamarin 5.5.3 Build 6 或 XCode 6.1 的下拉列表中不可用 - 仅 NSLocationUsageDescription在列表中，这导致CLLocationManager继续默默地失败。
于 2014-11-21T16:51:19.653 回答
2
// ** 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]);
}
于 2014-11-18T13:50:09.900 回答
2
对于拥有多个 Info.plist 文件的所有人来说，这是一个小帮手...
find . -name Info.plist | xargs -I {} /usr/libexec/PlistBuddy -c 'Add NSLocationWhenInUseUsageDescription string' {}
它会将所需的标签添加到当前目录（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。
于 2014-10-07T08:18:12.890 回答
2
让Cocoa Keys信息始终触手可及，以获取这些更新，这里是链接：
享受。
于 2015-07-30T23:51:02.777 回答
2
我在 iOS9 中遇到了类似的错误（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，我找到了这段代码，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 值：应用程序需要员工的位置服务器
于 2015-12-29T17:19:13.667 回答
2
为了访问用户在 iOS 中的位置。您需要添加两个键
NSLocationWhenInUseUsageDescription
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>
请参见下图。
于 2017-06-17T03:35:03.630 回答
1
添加键
NSLocationWhenInUseUsageDescription或NSLocationAlwaysUsageDescription（背景 GPS 使用）和字符串，要求在info.plist每个目标上使用 GPS。通过运行请求许可：
[自我 initLocationManager:locationManager];
在哪里initLocationManager：
// 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info.plist每个目标的每个键都没有，则应用程序不会询问用户。if提供与 iOS 7 的兼容性，并且该方法respondsToSelector:保证未来的兼容性，而不仅仅是解决 iOS 7 和 8 的问题。
于 2014-11-16T22:04:17.700 回答
0
对我来说，问题是该类CLLocationManagerDelegate是私有的，这阻止了所有委托方法被调用。猜猜这不是一个很常见的情况，但我想我会提到它以防万一帮助任何人。
于 2015-07-07T05:34:57.777 回答
0
InfoPlist.strings我在iOS 8.4、iPad mini 2中添加了这些键。它也可以。我没有NSLocationWhenInUseUsageDescription在我的Info.plist.
InfoPlist.strings：
"NSLocationWhenInUseUsageDescription" = "I need GPS information....";
它说，基于这个线程as in iOS 7，可以在 InfoPlist.strings 中进行本地化。在我的测试中，这些键可以直接在文件中配置InfoPlist.strings。
因此，您需要做的第一件事是将 > 以下键中的一个或两个添加到 Info.plist 文件中：
- NSLocationWhenInUseUsageDescription
- NSLocationAlwaysUsageDescription
这两个键都带有一个字符串，该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“Location is required to find out you are”，就像在iOS 7中一样，可以在 InfoPlist.strings 文件中进行本地化。
更新：
我认为@IOS's 的方法更好。添加Info.plist具有空值的键并将本地化字符串添加到InfoPlist.strings.
于 2015-07-30T09:58:01.870 回答