public MapPage()
{
InitializeComponent();
InfoFrame.BackgroundColor = IncidentTypeInfo.GetIncidentColor();
_restService = new RestService();
TopLabel.Text = $"Crimes Within A {CrimeFilterer.DistanceFilter}km Radius";
SearchForCrime();
userLocator = CrossGeolocator.Current;
}
protected async Task CreatePins()
{
activityIndicator.IsRunning = true;
// Get list of crime incidents from local database, filtering according to the requested filter
Incident[] incidents = (await CrimeFilterer.Filter()).ToArray();
numOfIncidentsLabel.Text = $"{incidents.Length} Incidents";
InfoFrame.BackgroundColor = IncidentTypeInfo.GetIncidentColor();
crimeMap.Pins.Clear();
// Create a pin for each for incident
for (int i = 0; i < incidents.Length; i++)
{
Incident incident = incidents[i];
// initialize pin
CustomPin pin = new CustomPin
{
Type = PinType.Place,
Position = new Position(incident.Latitude, incident.Longitude),
Label = $"{incident.Type}",
Address = $"{incident.Description}"
};
// add pin
crimeMap.Pins.Add(pin);
}
if (crimeMap.Pins.Count > 0)
{
var lastPin = crimeMap.Pins.First();
// Move map to Location with crime pins
MapSpan mapSpan = MapSpan.FromCenterAndRadius(new Position(lastPin.Position.Latitude, lastPin.Position.Longitude), Distance.FromKilometers(4));
crimeMap.MoveToRegion(mapSpan);
}
activityIndicator.IsRunning = false;
}