自从新的iOS 8测试版发布以来,我无法成功获取用户的位置.在更新到iOS 8之前,我没有任何问题,但现在它总是返回0.000000作为当前纬度和经度.这只是新版本中的一个错误吗?我的代码如下:
//from the .h file @interface MasterViewController : PFQueryTableViewController<CLLocationManagerDelegate,UITextFieldDelegate,UISearchBarDelegate,UISearchdisplayDelegate> { } @property (nonatomic,strong) CLLocationManager *locationManager; //from the .m file @synthesize locationManager = _locationManager; - (void)viewDidLoad { [super viewDidLoad]; [self.locationManager startUpdatingLocation]; } - (CLLocationManager *)locationManager { if (_locationManager != nil) { return _locationManager; } _locationManager = [[CLLocationManager alloc] init]; _locationManager.delegate = self; _locationManager.desiredAccuracy = kCLLocationAccuracyBest; return _locationManager; } - (void)locationManager:(CLLocationManager *)manager didUpdatetoLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation { } - (void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error { }
UPDATE
这个问题已得到解答(Location Services not working in iOS 8).对于仍在努力解决这个问题的人来说,为了保持与iOS 7的向后兼容性,我使用了以下代码:
if ([self.locationManager respondsToSelector:@selector(requestAlwaysAuthorization)]) { }
解决方法
如您的更新/评论中所述,iOS8要求您在Info.plist中使用requestAlwaysAuthorization或requestWhenInUseAuthorization以及新的NSLocationAlwaysUsageDescription或NSLocationWhenInUseUsageDescription键.
- (void)locationManager:(CLLocationManager *)manager didUpdatetoLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation
它已在iOS6中弃用,您现在应该使用这个新的委托方法:
- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations
CLLocation *newLocation = [locations lastObject];