定位权限授权 - iOS

#import <CoreLocation/CoreLocation.h>

/*
 *  locationServicesEnabled
 *
 *  Discussion:
 *      Determines whether the user has location services enabled.
 *      If NO, and you proceed to call other CoreLocation API, user will be prompted with the warning
 *      dialog. You may want to check this property and use location services only when explicitly requested by the user.
 */
+ (BOOL)locationServicesEnabled API_AVAILABLE(ios(4.0), macos(10.7));

/*
 *  desiredAccuracy
 *  
 *  Discussion:
 *      The desired location accuracy. The location service will try its best to achieve
 *      your desired accuracy. However, it is not guaranteed. To optimize
 *      power performance, be sure to specify an appropriate accuracy for your usage scenario (eg,
 *      use a large accuracy value when only a coarse location is needed). Use kCLLocationAccuracyBest to
 *      achieve the best possible accuracy. Use kCLLocationAccuracyBestForNavigation for navigation.
 *      The default value varies by platform.
 */
@property(assign, nonatomic) CLLocationAccuracy desiredAccuracy;
 
精准度 desiredAccuracy 所对应的枚举值相关:
/*
 *  kCLLocationAccuracy<x>
 *  
 *  Discussion:
 *    Used to specify the accuracy level desired. The location service will try its best to achieve
 *    your desired accuracy. However, it is not guaranteed. To optimize
 *    power performance, be sure to specify an appropriate accuracy for your usage scenario (eg,
 *    use a large accuracy value when only a coarse location is needed).
 */
extern const CLLocationAccuracy kCLLocationAccuracyBestForNavigation API_AVAILABLE(ios(4.0), macos(10.7));// 最近
extern const CLLocationAccuracy kCLLocationAccuracyBest;// 最优
extern const CLLocationAccuracy kCLLocationAccuracyNearestTenMeters;// 十米
extern const CLLocationAccuracy kCLLocationAccuracyHundredMeters;// 百米
extern const CLLocationAccuracy kCLLocationAccuracyKilometer;// 千米
extern const CLLocationAccuracy kCLLocationAccuracyThreeKilometers;// 三千米

/*
 *  distanceFilter
 *  
 *  Discussion:
 *      Specifies the minimum update distance in meters. Client will not be notified of movements of less 
 *      than the stated value, unless the accuracy has improved. Pass in kCLDistanceFilterNone to be 
 *      notified of all movements. By default, kCLDistanceFilterNone is used.
 */
@property(assign, nonatomic) CLLocationDistance distanceFilter;

/*
 *  startUpdatingLocation
 *  
 *  Discussion:
 *      Start updating locations.
 */
- (void)startUpdatingLocation API_AVAILABLE(watchos(3.0)) API_UNAVAILABLE(tvos);
 
/*
 *  stopUpdatingLocation
 *  
 *  Discussion:
 *      Stop updating locations.
 */
- (void)stopUpdatingLocation;

locationManager.delegate = self;
 
- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray<CLLocation *> *)locations {
    NSLog(@"获取定位信息 --- 成功");
}
 
- (void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error {
    NSLog(@"获取定位信息 --- 失败");
}

/** 位置管理*/
CLLocationManager *locationManager;

#pragma mark - ****************************** 获取位置验证权限
/**
 获取位置验证权限(作用域: 地图 & 定位相关)
 @param vc 当前视图控件
 */
- (void)YHGetLocationPermissionVerifcationWithController:(UIViewController *)vc {
    BOOL enable = [CLLocationManager locationServicesEnabled];
    NSInteger state = [CLLocationManager authorizationStatus];
    
    if (!enable || 2 > state) {// 尚未授权位置权限
        if (8 <= [[UIDevice currentDevice].systemVersion floatValue]) {
            NSLog(@"系统位置权限授权弹窗");
            // 系统位置权限授权弹窗
            locationManager = [[CLLocationManager alloc] init];
            locationManager.delegate = self;
            [locationManager requestAlwaysAuthorization];
            [locationManager requestWhenInUseAuthorization];
        }
    }
    else {
        if (state == kCLAuthorizationStatusDenied) {// 授权位置权限被拒绝
            NSLog(@"授权位置权限被拒绝");
            UIAlertController *alertCon = [UIAlertController alertControllerWithTitle:@"提示"
                                                                              message:@"访问位置权限暂未授权"
                                                                       preferredStyle:UIAlertControllerStyleAlert];
            [alertCon addAction:[UIAlertAction actionWithTitle:@"暂不设置" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {
                
            }]];
            
            [alertCon addAction:[UIAlertAction actionWithTitle:@"设置" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
                dispatch_after(0.2, dispatch_get_main_queue(), ^{
                    NSURL *url = [[NSURL alloc] initWithString:UIApplicationOpenSettingsURLString];// 跳转至系统定位授权
                    if( [[UIApplication sharedApplication] canOpenURL:url]) {
                        [[UIApplication sharedApplication] openURL:url];
                    }
                });
            }]];
            
            [vc presentViewController:alertCon animated:YES completion:^{
                
            }];
        }
    }
}