我的应用在iOS 7上运行良好,但在iOS 8 SDK上却无法运行。
CLLocationManager不返回位置,我没有看到我的应用程序下设置->位置服务。我在这个问题上做了谷歌搜索,但没有任何结果。会有什么问题呢?
我的应用在iOS 7上运行良好,但在iOS 8 SDK上却无法运行。
CLLocationManager不返回位置,我没有看到我的应用程序下设置->位置服务。我在这个问题上做了谷歌搜索,但没有任何结果。会有什么问题呢?
当前回答
我在InfoPlist中添加了这些键。字符串在iOS 8.4, iPad mini 2。这也很有效。我没有在Info.plist中设置任何键,比如NSLocationWhenInUseUsageDescription。
InfoPlist.strings:
"NSLocationWhenInUseUsageDescription" = "I need GPS information....";
基于这个线程,它说,就像在iOS 7中一样,可以本地化到InfoPlist.strings中。在我的测试中,这些键可以直接在InfoPlist.strings文件中配置。
因此,您需要做的第一件事是将>下面的一个或两个键添加到您的Info中。plist文件: NSLocationWhenInUseUsageDescription NSLocationAlwaysUsageDescription 这两个键都有一个字符串,用来描述你为什么 需要位置服务。您可以输入一个字符串,例如“Location is” 需要知道你在哪里”,这在iOS 7中是可以做到的 在InfoPlist中本地化。字符串文件。
更新:
我认为@IOS的方法更好。将键添加到信息。将本地化的字符串添加到InfoPlist.strings中。
其他回答
我在iOS9中得到了类似的错误(使用Xcode 7和Swift 2): 试图启动MapKit位置更新而没有提示位置授权。必须先调用-[CLLocationManager requestWhenInUseAuthorization]或-[CLLocationManager requestAlwaysAuthorization]。 我是跟着一个教程,但导师使用的是iOS8和Swift 1.2。在Xcode 7和Swift 2中有一些变化,我发现了这段代码,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,我把它放到info.plist中: 信息属性列表:NSLocationWhenInUseUsageDescription 取值范围:应用需要为员工提供位置服务器
添加关键NSLocationWhenInUseUsageDescription或NSLocationAlwaysUsageDescription(后台GPS使用)字符串要求使用GPS在每个信息。Plist从每个目标。 通过运行命令获得许可: (自我initLocationManager: locationManager);
其中“initLocationManager”为:
// asks for GPS authorization on iOS 8
-(void) initLocationManager:(CLLocationManager *) locationManager{
locationManager = [[CLLocationManager alloc]init];
if([locationManager respondsToSelector:@selector(requestAlwaysAuthorization)])
[locationManager requestAlwaysAuthorization];
}
记住,如果键不是在每个信息上。Plist为每个目标,应用程序将不会询问用户。if提供了与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。
- (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
}
还有你的信息。plist文件
- (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];
}
}
In iOS 8 you need to do two extra things to get location working: Add a key to your Info.plist and request authorization from the location manager asking it to start. There are two Info.plist keys for the new location authorization. One or both of these keys is required. If neither of the keys are there, you can call startUpdatingLocation but the location manager won’t actually start. It won’t send a failure message to the delegate either (since it never started, it can’t fail). It will also fail if you add one or both of the keys but forget to explicitly request authorization. So the first thing you need to do is to add one or both of the following keys to your Info.plist file:
NSLocationWhenInUseUsageDescription NSLocationAlwaysUsageDescription
这两个键都有一个字符串
这就是为什么你需要位置服务。你可以 输入一个字符串,如“位置是必须找到你在哪里” 和iOS 7一样,可以在InfoPlist中进行本地化。字符串文件。
苹果的文件显示:
https://developer.apple.com/documentation/corelocation/requesting_permission_to_use_location_services https://developer.apple.com/documentation/corelocation/cllocationmanager/1620562-requestwheninuseauthorization
As of iOS 8, the presence of a NSLocationWhenInUseUsageDescription or a NSLocationAlwaysUsageDescription key value in your app's Info.plist file is required. It's then also necessary to request permission from the user prior to registering for location updates, either by calling [self.myLocationManager requestWhenInUseAuthorization] or [self.myLocationManager requestAlwaysAuthorization] depending on your need. The string you entered into the Info.plist will then be displayed in the ensuing dialog.
如果用户授予了权限,则业务照常进行。如果他们拒绝权限,则委托不会被告知位置更新。