SENSiOSGpsDelegate Class Reference

#import <SENSiOSGpsDelegate.h>

Inherits NSObject, and <CLLocationManagerDelegate>.

Instance Methods
(BOOL)	- start
	Starts the location data update. More...
(void)	- stop
	Stops the location data update. More...
(void)	- askPermission
(id)	- init [implementation]
(void)	- setupLocationManager [implementation]
	Starts the location data update if the interval time > 0 else it stops. More...
(void)	- locationManager:didUpdateToLocation:fromLocation: [implementation]
(void)	- locationManager:didFailWithError: [implementation]
(void)	- locationManager:didChangeAuthorizationStatus: [implementation]

Properties
std::function< void(double, double, double, double)>	updateCB
std::function< void(bool)>	permissionCB

Private Attributes
CLLocationManager *	_locationManager
BOOL	_running

Detailed Description

Definition at line 6 of file SENSiOSGpsDelegate.h.

Method Documentation

askPermission

- (void) askPermission

Definition at line 7 of file SENSiOSGpsDelegate.mm.

{
    // for iOS 8, specific user level permission is required,
    // "when-in-use" authorization grants access to the user's location.
    // important: be sure to include NSLocationWhenInUseUsageDescription along with its
    // explanation string in your Info.plist or startUpdatingLocation will not work
    if ([_locationManager respondsToSelector:@selector(requestWhenInUseAuthorization)])
    {
        [_locationManager requestWhenInUseAuthorization];
    }
}

init

- (id) init

implementation

Definition at line 7 of file SENSiOSGpsDelegate.mm.

{
    //Initialize the parent class(es) up the hierarchy and create self:
    self = [super init];
 
    //Initialize members (not necessary with ARC)
    _locationManager = nil;
    _running         = NO;
    if (self)
    {
        [self setupLocationManager];
    }
 
    return self;
}

locationManager:didChangeAuthorizationStatus:

- (void) locationManager: (CLLocationManager*)  manager didChangeAuthorizationStatus: (CLAuthorizationStatus)  status

implementation

Definition at line 7 of file SENSiOSGpsDelegate.mm.

                       :(CLLocationManager*)manager didChangeAuthorizationStatus:(CLAuthorizationStatus)status
{
    //callback permission status
    if (status == kCLAuthorizationStatusAuthorizedAlways ||
        status == kCLAuthorizationStatusAuthorizedWhenInUse)
    {
        if (_permissionCB)
            _permissionCB(true);
    }
    else
    {
        if (_permissionCB)
            _permissionCB(false);
    }
}

locationManager:didFailWithError:

- (void) locationManager: (CLLocationManager*)  manager didFailWithError: (NSError*)  error

implementation

Definition at line 7 of file SENSiOSGpsDelegate.mm.

                       :(CLLocationManager*)manager didFailWithError:(NSError*)error
{
    // The location "unknown" error simply means the manager is currently unable to get the location.
    // We can ignore this error for the scenario of getting a single location fix, because we already have a
    // timeout that will stop the location manager to save power.
    //
    if ([error code] != kCLErrorLocationUnknown)
    {
        printf("**** locationManager didFailWithError ****\n");
        [self stop];
    }
}

locationManager:didUpdateToLocation:fromLocation:

- (void) locationManager: (CLLocationManager*)  manager didUpdateToLocation: (CLLocation*)  newLocation fromLocation: (CLLocation*)  oldLocation

implementation

Definition at line 7 of file SENSiOSGpsDelegate.mm.

                       :(CLLocationManager*)manager didUpdateToLocation:(CLLocation*)newLocation fromLocation:(CLLocation*)oldLocation
{
    //printf("horizontalAccuracy: %f\n", newLocation.horizontalAccuracy);
 
    // negative horizontal accuracy means no location fix
    if (newLocation.horizontalAccuracy > 0.0)
    {
        //callback here
        if (_updateCB)
        {
            _updateCB(newLocation.coordinate.latitude,
                      newLocation.coordinate.longitude,
                      newLocation.altitude,
                      newLocation.horizontalAccuracy);
        }
    }
}

setupLocationManager

- (void) setupLocationManager

implementation

Starts the location data update if the interval time > 0 else it stops.

Definition at line 7 of file SENSiOSGpsDelegate.mm.

{
    // Init location manager
    _locationManager                 = [[CLLocationManager alloc] init];
    _locationManager.delegate        = self;
    _locationManager.desiredAccuracy = kCLLocationAccuracyBest;
 
    [self askPermission];
}

start

- (BOOL) start

Starts the location data update.

Definition at line 7 of file SENSiOSGpsDelegate.mm.

{
    if (_locationManager == nil)
        return NO;
 
    if (!_running)
    {
        [_locationManager startUpdatingLocation];
        _running = true;
        printf("Starting Location Manager\n");
    }
 
    return YES;
}

stop

- (void) stop

Stops the location data update.

Definition at line 7 of file SENSiOSGpsDelegate.mm.

{
    if (_running)
    {
        [_locationManager stopUpdatingLocation];
        _running = false;
        printf("Stopping Location Manager\n");
    }
}

Member Data Documentation

_locationManager

- (CLLocationManager*) _locationManager

private

Definition at line 6 of file SENSiOSGpsDelegate.mm.

_running

- (BOOL) _running

private

Definition at line 7 of file SENSiOSGpsDelegate.mm.

Property Documentation

permissionCB

- (function<void(bool)>) SENSiOSGpsDelegate:

readwritenonatomicassign

Definition at line 13 of file SENSiOSGpsDelegate.h.

updateCB

- (function<void(double, double, double, double)>) SENSiOSGpsDelegate:

readwritenonatomicassign

Definition at line 12 of file SENSiOSGpsDelegate.h.

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The documentation for this class was generated from the following files:

• SENSiOSGpsDelegate.h
• SENSiOSGpsDelegate.mm