Using BubbleWrap::HTTP to send device's location when app entered background - ios5

Question

In my app I want to submit the device's location when in background to a web app. Currently I am using BubbleWrap for the POST request.
Note, that I may be able to use anything other than BubbleWrap if needed.
The current behavior is the following:
I start up the app
I bring it to background
[Waiting for request on web app, watching the logs, nothing happens]
I bring the app to the foreground
The app sends the device's location
What should happen:
I start up the app
I bring it to background
The app sends the device's location
The app keeps listening for significant location changes and sends its location on significant change
This is the code:
class AppDelegate
def application(application, didFinishLaunchingWithOptions:launchOptions)
[ommitted]
UIApplication.sharedApplication.registerForRemoteNotificationTypes(UIRemoteNotificationTypeAlert | UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeSound)
true
end
def applicationDidEnterBackground(application)
#locationManager.startMonitoringSignificantLocationChanges
end
def applicationDidEnterForeground
#locationManager.stopMonitoringSignificantLocationChanges
end
def application(app, didRegisterForRemoteNotificationsWithDeviceToken:deviceToken)
#device_token = deviceToken.description.gsub(" ", "").gsub("<", "").gsub(">", "")
# Log the push notification to the console
puts #device_token
end
def application(app, didFailToRegisterForRemoteNotificationsWithError:error)
show_alert "Error when registering for device token", "Error, #{error}"
end
def device_token
#device_token
end
def location_manager
if #locationManager.nil?
#locationManager = CLLocationManager.alloc.init
#locationManager.setDesiredAccuracy(KCLLocationAccuracyBest)
#locationManager.delegate = self
end
#locationManager
end
# iOS >= 4
def locationManager(manager, didUpdateToLocation:current_location, fromLocation:last_location)
puts "Location #{current_location} [iOS 5]"
end
# iOS >= 6
def locationManager(manager, didUpdateLocations:locations)
data = {latitude: locations.last.coordinate.latitude,
longitude: locations.last.coordinate.longitude,
device_token: #device_token }
BW::HTTP.post("http://192.168.1.100:4567/", {payload: data}) do |response|
if response.ok?
#json = BW::JSON.parse(response.body.to_str)
#p json['id']
else
App.alert(response.error_message)
end
end
end
def locationManager(manager, didFailWithError:error)
puts "failed"
end
def show_alert(title, message)
alert = UIAlertView.new
alert.title = title
alert.message = message
alert.show
end
end
Additional info:
I have declared the following in my Rakefile app.info_plist['UIBackgroundModes'] = ['location'].
Any hints or tips on why this is may not be working?

Answer 1

My guess is that because the BW::HTTP.post(...) is asynchronous, your app quits before the block is called.