iOS startUpdatingLocation從未調用

我一直在試圖獲取位置座標。我撥打[locationManager startUpdatingLocation];後沒有任何反應。iOS startUpdatingLocation從未調用

它永遠不會調用- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations;

有什麼想法？

說明：我已設置CLLocationManagerDelegate並將CLLocationManager設置爲strong。在我的viewDidLoad中，我設置了我的代表，並且正在嘗試使用requestAlwaysAuthorization。

ViewController.m

- (void)viewDidLoad 
{ 
    [super viewDidLoad]; 


    NSLog(@"locationServicesEnabled: %@", [CLLocationManager locationServicesEnabled] ? @"YES":@"NO"); 
    NSLog(@"locationManager init"); 
    NSLog(@"geocoder init"); 
    locationManager = [[CLLocationManager alloc] init]; 
    geocoder = [[CLGeocoder alloc] init]; 

    //locationManager.delegate = self; 
    [locationManager setDelegate:self]; 
    locationManager.desiredAccuracy = kCLLocationAccuracyBest; 
    [locationManager requestAlwaysAuthorization]; 

    NSLog(@"locationManager startUpdatingLocation"); 
    [locationManager startUpdatingLocation]; 
} 

#pragma mark - CLLocationManagerDelegate 

- (void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error 
{ 
    NSLog(@"locationManager:manager"); 
    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 
    didUpdateLocations:(NSArray *)locations; 
{ 
    NSLog(@"locations %@", locations); 

    CLLocation *newLocation = [locations lastObject]; 
    NSLog(@"didUpdateToLocation: %@", newLocation); 
    CLLocation *currentLocation = newLocation; 

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

    // Stop Location Manager 
    [locationManager stopUpdatingLocation]; 

    // Reverse Geocoding 
    NSLog(@"Resolving the Address"); 
    [geocoder reverseGeocodeLocation:currentLocation completionHandler:^(NSArray *placemarks, NSError *error) { 
     NSLog(@"Found placemarks: %@, error: %@", placemarks, error); 
     if (error == nil && [placemarks count] > 0) { 
      placemark = [placemarks lastObject]; 
      locationLabel.text = [NSString stringWithFormat:@"%@, %@", 
           placemark.locality, 
           placemark.administrativeArea]; 
     } else { 
      NSLog(@"%@", error.debugDescription); 
     } 
    } ]; 

}

ViewController.h

#import <UIKit/UIKit.h> 
#import <CoreLocation/CoreLocation.h> 

@interface ViewController : UIViewController <CLLocationManagerDelegate> 

@property (strong, nonatomic) CLLocationManager *locationManager; 
@property (strong, nonatomic) CLGeocoder *geocoder; 
@property (strong, nonatomic) CLPlacemark *placemark;

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2014-09-24 08:18:39.783 appName[1201:130186] locationServicesEnabled: YES 
2014-09-24 08:18:39.784 appName[1201:130186] locationManager init 
2014-09-24 08:18:39.784 appName[1201:130186] geocoder init 
2014-09-24 08:18:39.785 appName[1201:130186] locationManager startUpdatingLocation

我也有特里結構d刪除[locationManager stopUpdatingLocation];，它仍然沒有做任何事情。

其他注意事項：如果我檢查設備設置/隱私，它表示我的應用確實具有位置權限。我所有的.h屬性都是@synthesize正確在.m文件中。

來源

2014-09-24 erad

如果您使用的是iOS 8，則需要先調用以下方法之一： -[CLLocationManager requestWhenInUseAuthorization]或-[CLLocationManager requestAlwaysAuthorization]，然後再致電[locationManager startUpdatingLocation];。

你還需要在你的.plist說明這些鍵NSLocationUsageDescription，NSLocationWhenInUseUsageDescription和NSLocationAlwaysUsageDescription

來源

2014-09-24 12:26:54 cdescours

我'[的LocationManager requestAlwaysAuthorization]' – erad 2014-09-24 12:29:21

我的問題是，我需要添加'NSLocationAlwaysUsageDescription'到' .plist'。我現在正在獲取位置數據。（雖然不正確的數據，但我懷疑這是一個模擬器的東西。）非常感謝。 – erad 2014-09-24 12:37:20

位置管理器在當前（Xcode 6.0.1）模擬器中非常破碎。 – EricS 2014-09-24 13:28:41

iOS startUpdatingLocation從未調用

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