Esempio n. 1
0
        // The project requires the Google Glass Component from
        // https://components.xamarin.com/view/googleglass
        // so make sure you add that in to compile succesfully.
        protected override async void OnCreate(Bundle bundle)
        {
            base.OnCreate(bundle);

            // Show loading screen
            SetContentView(Resource.Layout.LoadingScreen);
            var loadingText = FindViewById <TextView> (Resource.Id.loading_text);

            loadingText.SetText(Resource.String.getting_departures);             // set loading text
            var progressBar = FindViewById <SliderView> (Resource.Id.indeterm_slider);

            progressBar.StartIndeterminate();              // start indeterminate progress bar


            // get station ID from intent
            int intentStationId = int.Parse(Intent.GetStringExtra("stationId"));

            // try to call PTV API to get station departures
            List <Departure> stationDepartures;

            try{
                var ptvApi = new PtvApi();
                stationDepartures = await ptvApi.StationDepartures(intentStationId, TransportType.Train, 1);
            }catch (Exception e) {
                // show error card
                var errorCard = new Card(this);
                errorCard.SetText(e.ToString());
                SetContentView(errorCard.View);

                return;
            }

            // if there are no departures, show no departure message
            if (stationDepartures.Count == 0)
            {
                // Show error screen
                SetContentView(Resource.Layout.ErrorScreen);
                var errorText = FindViewById <TextView> (Resource.Id.error_text);
                errorText.SetText(Resource.String.no_upcoming_departures);                 // set error text

                return;
            }

            // show departures list screen
            ListView listView;

            SetContentView(Resource.Layout.DepartureScreen);
            listView         = FindViewById <ListView> (Resource.Id.listview);
            listView.Adapter = new TrainsScreenAdapter(this, stationDepartures); // bind list of station departures to listView
            listView.RequestFocus();                                             // set focus on the listView so scrolling works on the list
        }
Esempio n. 2
0
        public async void NearbyDepartures(Location location)
        {
            var ptvApi = new PtvApi();             // new PTV API service

            // Show loading screen
            SetContentView(Resource.Layout.LoadingScreen);
            var loadingText = FindViewById <TextView>(Resource.Id.loading_text);

            loadingText.SetText(Resource.String.getting_stopsnearyou);             // set loading text
            var progressBar = FindViewById <SliderView>(Resource.Id.indeterm_slider);

            progressBar.StartIndeterminate();             // start indeterminate progress bar

            // try to call PTV API to get nearby stops
            List <Stop> stopsNearby;

            try
            {
                stopsNearby = await ptvApi.StopsNearby(location.Latitude, location.Longitude);
            }
            catch (Exception e)
            {
                // show error card
                var errorCard = new Card(this);
                errorCard.SetText(e.ToString());
                SetContentView(errorCard.View);

                return;
            }

            // depending on our mode of transport, we want different number of stops and error messages
            int stopLimit     = 1;
            int noStopsNearby = Resource.String.no_stops_nearby;

            switch (transportType)
            {
            case TransportType.Bus:
                stopLimit     = 6;
                noStopsNearby = Resource.String.no_bus_stops_nearby;
                break;

            case TransportType.Tram:
                stopLimit     = 6;
                noStopsNearby = Resource.String.no_tram_stops_nearby;
                break;

            case TransportType.Train:
                stopLimit     = 1;
                noStopsNearby = Resource.String.no_train_stops_nearby;
                break;
            }

            // Cull our stops nearby to just how many we want
            stopsNearby = stopsNearby.Where(x =>
                                            x.TransportType == transportType
                                            ).Take(stopLimit).ToList();

            // if there are no stops nearby, show no stops message
            if (stopsNearby.Count == 0)
            {
                // Show error screen
                SetContentView(Resource.Layout.ErrorScreen);
                var errorText = FindViewById <TextView>(Resource.Id.error_text);
                errorText.SetText(noStopsNearby);                 // set error text

                return;
            }

            // Update loading text
            loadingText.SetText(Resource.String.getting_departures);

            // Get departures for each stop
            List <Departure> nearByDepartures = new List <Departure>();

            foreach (Stop stop in stopsNearby)
            {
                nearByDepartures.AddRange(await ptvApi.StationDepartures(stop.StopID, transportType, 1));                 // merge departures together
            }

            // if there are no departures, show no departure message
            if (nearByDepartures.Count == 0)
            {
                var noDeparturesCard = new Card(this);
                noDeparturesCard.SetText(Resource.String.no_upcoming_departures);
                SetContentView(noDeparturesCard.View);
                return;
            }

            // show departures list screen
            SetContentView(Resource.Layout.DepartureScreen);
            headListView = FindViewById <HeadListView>(Resource.Id.listview);
            // get the right type of screen adapter for the right type of transport
            if (transportType == TransportType.Train)
            {
                // we don't need the train "number" for nearby trains
                headListView.Adapter = new NearbyTrainScreenAdapter(this, nearByDepartures);                 // bind list of station departures to listView
            }
            else
            {
                headListView.Adapter = new NearbyBusTramScreenAdapter(this, nearByDepartures);                 // bind list of station departures to listView
            }
            headListView.activate();
        }