Start location monitoring for all geofences with an in-app callback in swift

iOS
1

I like to start to geofence and I have a call like this to test it:

backendless.geo.startGeofenceMonitoring(geoFenceClientCallback, response: { (AnyObject) -> Void in

            print("ok")

    }) { (fault:Fault!) -> Void in

            print("Fault")


    }

geoFenceClientCallback is a class following the IGeofenceCallback protocol.

After a while when the app are running (I Guess it is the On Stay event that is triggered since I testing it inside a geofence) it crash with a "*** Terminating app due to uncaught exception of class ‘Fault’

libc++abi.dylib: terminating with uncaught exception of type Fault"

2

Hi Erik,
Do you have a handler in your code for onStay event?

3

Only in GeoFenceClientCallback:

class GeoFenceClientCallback: NSObject, IGeofenceCallback {

func geoPointEntered(geofenceName: String, geofenceId: String, latitude: Double, longitude: Double) {

    print("entered")

}

func geoPointStayed(geofenceName: String, geofenceId: String, latitude: Double, longitude: Double) {

    print("stayed")

}



func geoPointExited(geofenceName: String, geofenceId: String, latitude: Double, longitude: Double) {

    print("exited")

}

}

4

Is it possible for you to send us your project (or some minimal part of it, which can be executed as is) to support@backendless.com, so that we can reproduce this on our side?

5

Hi Erik,

Unfortunately, we cannot execute “as is” the files you’ve sent.
Please, add the line:

   DebLog.setIsActive(true)

in your project just after backendless.initApp(),
then run your app and send a log to support@backendless.com

Another way is to send your sample project demonstrating the problem, we investigate it and find a solution asap.

Regards,
Slava

6

Hi, Erik!

Your issue might happen if server onStay action is not configured. The thing is that even through using in-app callback - timeout for onStay event is taken from server.
Try please the following: configure any action for onStay event and repeat your case again.
I have one more question: do you see the result of “geoPointEntered” function execution?
Thank you!
Alex

7

We recently released latest Backendless SDK with XCode 7.3

You should update libs with CocoaPods (3.0.12 release) or from ios-SDK github (CommLibiOS & backendless).

Then try again your app and let we know how it goes.

8

I have updated to 3.0.12.

Cant see any callback on the onStay event. I added onStayEvent on serverSide, to get the onStayDuration to be set.

I will try to simulate the onEnter event and see if that works.

<GeoFence> geofenceName:home, onStayDuration:30, type:SHAPE\nnwPoint:<GeoPoint>

9

Please, provide a log I’ve written about.

10

2016-03-31 16:34:50.891 Zmart[3135:1088946] LocationTracker -> applicationDidBecomeActive
2016-03-31 16:34:51.936 Zmart[3135:1088946] GeoService -> addFenceMonitoring: callback = <ClientCallback: 0x12fec0cb0>, geoFences = (
“<GeoFence> geofenceName:711_roa, onStayDuration:-1, type:SHAPE\nnwPoint:<GeoPoint> LAT:59.94751805904249, LON:10.64310193061829, distance:0, CATEGORIES:(\n), METADATA:{\n}, objectId = 1B02A58A-E125-76EB-FF98-947B3B802900\nsePoint:<GeoPoint> LAT:59.94724941162492, LON:10.64369738101959, distance:0, CATEGORIES:(\n), METADATA:{\n}, objectId = ECB949AC-0504-B0C8-FF21-D7897D8AC000”,
“<GeoFence> geofenceName:narbutikken_roa, onStayDuration:-1, type:SHAPE\nnwPoint:<GeoPoint> LAT:59.94165248710755, LON:10.64144968986511, distance:0, CATEGORIES:(\n), METADATA:{\n}, objectId = 8FCD19C6-002E-A82A-FF50-38DF3CF19900\nsePoint:<GeoPoint> LAT:59.94132467897507, LON:10.64185738563538, distance:0, CATEGORIES:(\n), METADATA:{\n}, objectId = E44FCE53-73B8-53F9-FFF4-FB6FD6218400”,
“<GeoFence> geofenceName:rema_1000_Roa, onStayDuration:-1, type:SHAPE\nnwPoint:<GeoPoint> LAT:59.93448615130124, LON:10.63861191272736, distance:0, CATEGORIES:(\n), METADATA:{\n}, objectId = F5EB9901-DA04-1B6D-FF94-29D21373DB00\nsePoint:<GeoPoint> LAT:59.93423083598226, LON:10.63923954963684, distance:0, CATEGORIES:(\n), METADATA:{\n}, objectId = 17C20AA5-9298-C85B-FF51-72F3A0D9C900”,
“<GeoFence> geofenceName:Fotballbanen, onStayDuration:-1, type:SHAPE\nnwPoint:<GeoPoint> LAT:59.93830481243524, LON:10.63708305358887, distance:0, CATEGORIES:(\n), METADATA:{\n}, objectId = 7C761507-81D1-89F3-FF28-45499969C300\nsePoint:<GeoPoint> LAT:59.93770018469609, LON:10.63974380493164, distance:0, CATEGORIES:(\n), METADATA:{\n}, objectId = 64038B3A-E07E-C5AB-FF29-EF1E4B32CE00”,
“<GeoFence> geofenceName:Rimi, onStayDuration:30, type:SHAPE\nnwPoint:<GeoPoint> LAT:59.93885241090624, LON:10.63684701919556, distance:0, CATEGORIES:(\n), METADATA:{\n}, objectId = 56FEF996-6945-7E41-FF57-56A5A5A10800\nsePoint:<GeoPoint> LAT:59.93825585479374, LON:10.63963651657104, distance:0, CATEGORIES:(\n), METADATA:{\n}, objectId = FE9AA7CB-1060-C6F8-FF56-7ACB15E15D00”
)
2016-03-31 16:34:51.937 Zmart[3135:1088946] GeoService -> addFenceMonitoring: add listener = GeoFenceMonitoring
ok

11

And the crash has disappeared?

What goes wrong?

12

The crash are gone, still no callback when I stay inside a geofence.

I´m not sure what got the crash to disappear. I don´t belive I did any changes on the client side.

13

I don’t see a log message
“CREATE LocationTracker: sharedLocationTracker = <LocationTracker:”

so, LocationTracker didn’t start.

You could investigate our GeoFence sample (Objective-C). Hope it will be helpful for you how this have to be organized.

And check if your project .plist has all necessary keys (NSLocationAlwaysUsageDescription & ‘Required background modes’):
http://support.backendless.com/public/attachments/9634bbb784639b20a6a2877766c2f4f2.png&lt;/img&gt;

9634bbb784639b20a6a2877766c2f4f2.png
9634bbb784639b20a6a2877766c2f4f2.png1586×780 208 KB

14

Thanks, that was the missing part. Working perfekt now.