CLLocationManager不调用其委托方法

Question

I am developing an app which involves tracking the new location and updates to the server in X mins. I am stopping the location updating when the time diff is equal to or greater than X mins, then sending to the server and then start updating the location if it is less than X mins. But the didUpdateToLocation delegate methos is not called when it is less than X mins.

I am posting my code here:

- (void)locationManager:(CLLocationManager *)manager
    didUpdateToLocation:(CLLocation *)newLocation
    fromLocation:(CLLocation *)oldLocation
{
   if (theDiff > 10.0f || myDate == nil) 
        {
            [self stopUpdating];
         }
        else
        {
            [self.mLocationManager startUpdatingLocation];
        }

}

Answer 1

try this.,

//in your .h

CLLocationManager *locationManager;

@property (nonatomic,retain) CLLocationManager *locationManager;

// Then synthesize it in your .m

@synthesize locationManager;

//in your viewDidLoad

locationManager = [[CLLocationManager alloc] init];
locationManager.delegate = self;
locationManager.distanceFilter = kCLDistanceFilterNone; // whenever we move
locationManager.desiredAccuracy = kCLLocationAccuracyHundredMeters; // 100 m
[locationManager startUpdatingLocation];

This will call the method whwnever you move with your phone. You can check this by changing simulator locatin also.

Hope this helps., Thanks, happy coding.

Answer 2

try this in .m add this method , or if you have any other custom code post it

-(void)LocationWithTime
{
    [CLController sharedInstance].locationManager.desiredAccuracy = 100.0;
    [CLController sharedInstance].delegate = self;
    BOOL locationAccessAllowed = NO ;

    if( [CLLocationManager respondsToSelector:@selector(locationServicesEnabled)] )
    {
        locationAccessAllowed = [CLLocationManager locationServicesEnabled] ;
    }
    if(locationAccessAllowed == YES)
    {

        [[CLController sharedInstance].locationManager startUpdatingLocation];
    }

}

this is the delegate method i have used -

-(void)newLocationUpdate:(NSString *)latvalue longValue:(NSString*)longvalue Error:(int) errCode
{



    DebugLog(@"LatLong values %@ %@", [UserContext sharedInstance].strLat, [UserContext sharedInstance].strLong);

    self.strLALat = latvalue;
    self.strLALong = longvalue;

    [[CLController sharedInstance].locationManager stopUpdatingLocation];
    [CLController sharedInstance].delegate=nil ;
}

Answer 3

Excerpt from Apple API Documentation,

/* * locationManager:didUpdateToLocation:fromLocation: *
* This method is deprecated. If locationManager:didUpdateLocations: is * implemented, this method will not be called. */

- (void)locationManager:(CLLocationManager *)manager
    didUpdateToLocation:(CLLocation *)newLocation
           fromLocation:(CLLocation *)oldLocation __OSX_AVAILABLE_BUT_DEPRECATED(__MAC_10_6, __MAC_NA, __IPHONE_2_0, __IPHONE_6_0);

Use the below delegate method instead,

/* * locationManager:didUpdateLocations: * locations is an array of CLLocation objects in chronological order. */

- (void)locationManager:(CLLocationManager *)manager
     didUpdateLocations:(NSArray *)locations __OSX_AVAILABLE_STARTING(__MAC_NA,__IPHONE_6_0);

This will work once you set the delegate.

Hope this helps.