Fetch GPS location for every 5 minutes only - ios

Question

In my Location Application implemented didUpdateToLocation method. This method called every second and provides location data. But I dont need to fetch location for every second, I need to fire this method every 5 minutes only. Is it possible to do this?
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
//initialize location lisetener on Application startup
self.myLocationManager = [[CLLocationManager alloc]init];
self.myLocationManager.desiredAccuracy = kCLLocationAccuracyBest;
self.myLocationManager.delegate = self;
[self.myLocationManager startUpdatingLocation];
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone) {
self.viewController = [[INNOViewController alloc] initWithNibName:#"INNOViewController_iPhone" bundle:nil];
} else {
self.viewController = [[INNOViewController alloc] initWithNibName:#"INNOViewController_iPad" bundle:nil];
}
self.window.rootViewController = self.viewController;
[self.window makeKeyAndVisible];
return YES;
}
-(void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation
{
/*
if(self.executingInBackground)
{
NSLog(#"Aplication running in background");
}
else
{
NSLog(#"Aplication NOT running in background");
}
*/
//NSLog(#"new location->%# and old location -> %#",newLocation,oldLocation);
NSString *urlAsString = #"http://www.apple.com";
NSURL *url=[NSURL URLWithString:urlAsString];
NSURLRequest *urlRequest=[NSURLRequest requestWithURL:url];
NSOperationQueue *queue = [[NSOperationQueue alloc]init];
[NSURLConnection sendAsynchronousRequest:urlRequest queue:queue completionHandler:^(NSURLResponse *response, NSData *data, NSError *error) {
if ([data length] > 0 && error == nil) {
NSString *html = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
NSLog(#"Downloaded html -> %#",html);
//NSLog(#"Downloaded successfully");
}
else if([data length] == 0 && error == nil)
{
NSLog(#"Nothing downloaded");
}
else
{
NSLog(#"Error occured -> %#",error);
}
}];
}

Answer 1

It is called that quickly because you asked for kCLLocationAccuracyBest. Back off a bit. It's not based on time, it's based on delta distance. At that accuracy even a small change in distance will trigger an update in an area with good reception. Use a different value.
Again, these methods are not meant to be used based on time. They are meant to be used based on delta distance.

Answer 2

Reduce the accuraccy and the distance filter,this will reduce the frequency in which the method is called
If you want it to be called after 5 minutes then you can forcefully call the methods stopupdating and startupdating every five minutes

Answer 3

You could use startMonitoringSignificantLocationChanges instead of startUpdatingLocation. You would be updated only when user moves around 500 meters from last position

Answer 4

Instead of:
[self.myLocationManager startUpdatingLocation];
use:
[self.myLocationManager startMonitoringSignificantLocationChanges];
If you use: startUpdatingLocation it'll call the delegate method in each second. When you use startMonitoringSignificantLocationChanges it'll call the delegate method when a significant change in location occurs or after 5 minute intervals.
startMonitoringSignificantLocationChanges
Starts the generation of updates based on significant location
changes.
- (void)startMonitoringSignificantLocationChanges
Discussion
This method initiates the delivery of location events asynchronously,
returning shortly after you call it. Location events are delivered to
your delegate’s locationManager:didUpdateLocations: method. The first
event to be delivered is usually the most recently cached location
event (if any) but may be a newer event in some circumstances.
Obtaining a current location fix may take several additional seconds,
so be sure to check the timestamps on the location events in your
delegate method.
After returning a current location fix, the receiver generates update
events only when a significant change in the user’s location is
detected. For example, it might generate a new event when the device
becomes associated with a different cell tower. It does not rely on
the value in the distanceFilter property to generate events. Calling
this method several times in succession does not automatically result
in new events being generated. Calling
stopMonitoringSignificantLocationChanges in between, however, does
cause a new initial event to be sent the next time you call this
method.
If you start this service and your application is subsequently
terminated, the system automatically relaunches the application into
the background if a new event arrives. In such a case, the options
dictionary passed to the locationManager:didUpdateLocations: method of
your application delegate contains the key
UIApplicationLaunchOptionsLocationKey to indicate that your
application was launched because of a location event. Upon relaunch,
you must still configure a location manager object and call this
method to continue receiving location events. When you restart
location services, the current event is delivered to your delegate
immediately. In addition, the location property of your location
manager object is populated with the most recent location object even
before you start location services.
In addition to your delegate object implementing the
locationManager:didUpdateLocations: method, it should also implement
the locationManager:didFailWithError: method to respond to potential
errors.
Note: Apps can expect a notification as soon as the device moves 500
meters or more from its previous notification. It should not expect
notifications more frequently than once every five minutes. If the
device is able to retrieve data from the network, the location manager
is much more likely to deliver notifications in a timely manner.
Declared In CLLocationManager.h
Reference CLLocationManager