locationManager无法在iOS 9上运行
我的GPS位置刷新信息有问题。 单击按钮时由我“locationManager”给出的function不会刷新“标签”中的信息。
我的代码： http ： //pastebin.com/hWeq6gTS
我是iOS的新手程序员。 请帮忙。
对于位置服务而言并不总是显而易见的问题是，您必须在Info.plist中拥有这两个键中的一个：
NSLocationWhenInUseUsageDescription-
NSLocationAlwaysUsageDescription
然后，在开始更新您的头寸时，不要忘记首先请求权限（再次，根据您的要求（在使用时/总是）：
-
[self.locationManager requestWhenInUseAuthorization] -
[self.locationManager requestAlwaysAuthorization]
在info.plist中添加这两个属性
‘NSLocationAlwaysUsageDescription’及以下属性
创建CocoaTouch类’LocationManager’inheritance自NSObject，如下面的类。
Singleton位置管理器类.h
#import @interface LocationManager : NSObject { CLLocationManager *locationManager; } @property (strong, nonatomic) NSString *longitude; @property (strong, nonatomic) NSString *latitude; @property (strong, nonatomic) CLLocation *currentLocation; + (instancetype)sharedInstance; @end
在这里实施.m
#import "LocationManager.h" @implementation LocationManager - (id) init { self = [super init]; if (self != nil) { [self locationManager]; } return self; } + (instancetype)sharedInstance { static LocationManager *sharedInstance = nil; static dispatch_once_t onceToken; dispatch_once(&onceToken, ^{ sharedInstance = [[LocationManager alloc] init]; // Do any other initialisation stuff here }); return sharedInstance; } - (void) locationManager { if ([CLLocationManager locationServicesEnabled]) { locationManager = [[CLLocationManager alloc] init]; locationManager.delegate = self; locationManager.desiredAccuracy = kCLLocationAccuracyBest; locationManager.distanceFilter = kCLDistanceFilterNone; if ([locationManager respondsToSelector:@selector(requestWhenInUseAuthorization)]) { [locationManager requestWhenInUseAuthorization]; } [locationManager startUpdatingLocation]; } else{ UIAlertView *servicesDisabledAlert = [[UIAlertView alloc] initWithTitle:@"Location Services Disabled" message:@"You currently have all location services for this device disabled. If you proceed, you will be showing past informations. To enable, Settings->Location->location services->on" delegate:nil cancelButtonTitle:@"Ok" otherButtonTitles:@"Continue",nil]; [servicesDisabledAlert show]; [servicesDisabledAlert setDelegate:self]; } } - (void)requestWhenInUseAuthorization { 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 *alertViews = [[UIAlertView alloc] initWithTitle:title message:message delegate:self cancelButtonTitle:@"Cancel" otherButtonTitles:@"Settings", nil]; [alertViews show]; } // The user has not enabled any location services. Request background authorization. else if (status == kCLAuthorizationStatusNotDetermined) { [locationManager requestWhenInUseAuthorization]; } } #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 didChangeAuthorizationStatus:(CLAuthorizationStatus)status { switch (status) { case kCLAuthorizationStatusNotDetermined: case kCLAuthorizationStatusRestricted: case kCLAuthorizationStatusDenied: { // do some error handling } break; default:{ [locationManager startUpdatingLocation]; } break; } } - (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation { CLLocation *location; location = [manager location]; CLLocationCoordinate2D coordinate = [location coordinate]; _currentLocation = [[CLLocation alloc] init]; _currentLocation = newLocation; _longitude = [NSString stringWithFormat:@"%f",coordinate.longitude]; _latitude = [NSString stringWithFormat:@"%f",coordinate.latitude]; // globalObjects.longitude = [NSString stringWithFormat:@"%f",coordinate.longitude]; // globalObjects.latitude = [NSString stringWithFormat:@"%f",coordinate.latitude]; } @end
import
#import "LocationManager.h"
在你的AppDelegate.h中
并在你的AppDelegate.m中调用它
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { [LocationManager sharedInstance]; return true; }
然后只需获取[LocationManager sharedInstance] .longitude或纬度以获得更新的lat long。
而不是使用
-(void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation{ // Location update code }
使用此function获取更新的位置
-(void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations{ // Assigning the last object as the current location of the device CLLocation *currentLocation = [locations lastObject]; }
当我们不检查授权状态时，有时我们会遇到问题。 您可以查看此代码
// Custom initialization code CLLocationManager *manager = [[CLLocationManager alloc]init]; manager.delegate = self; manager.desiredAccuracy = kCLLocationAccuracyBest; // Setting distance fiter to 10 to get notified only after location change about 10 meter manager.distanceFilter = kCLDistanceFilterNone; // Requesting for authorization if ([manager respondsToSelector:@selector(requestWhenInUseAuthorization)]){ [manager requestWhenInUseAuthorization]; } // Immediately starts updating the location [manager startUpdatingLocation]; [manager startUpdatingHeading];
如果__IPHONE_OS_VERSION_MAX_ALLOWED> = 80000
// user activated automatic attraction info mode CLAuthorizationStatus status = [CLLocationManager authorizationStatus]; if (status == kCLAuthorizationStatusDenied || status == kCLAuthorizationStatusAuthorizedWhenInUse || status == kCLAuthorizationStatusNotDetermined) { // present an alert indicating location authorization required // and offer to take the user to Settings for the app via // UIApplication -openUrl: and UIApplicationOpenSettingsURLString [manager requestAlwaysAuthorization]; } [manager requestWhenInUseAuthorization];
其他
[manager requestAlwaysAuthorization];