protected override void OnAppearing()
{
base.OnAppearing();
Device.OnPlatform(() =>
{
// Start listener for pushpin events
MessagingCenter.Subscribe <CustomPin>(this, "ShowCrimeReport", (obj) =>
{
var crimeDetailPage = new CrimeDetailPage(obj);
Navigation.PushAsync(crimeDetailPage);
});
DataFill(_crimes);
_initialized = true;
}, () => {
MyMap.PropertyChanged += (sender, e) =>
{
if (!_initialized)
{
// Start listener for pushpin events
MessagingCenter.Subscribe <CustomPin>(this, "ShowCrimeReport", (obj) =>
{
var crimeDetailPage = new CrimeDetailPage(obj);
Navigation.PushAsync(crimeDetailPage);
});
DataFill(_crimes);
_initialized = true;
}
};
}, null);
}
public void Handle_ItemSelected(object sender, Xamarin.Forms.SelectedItemChangedEventArgs e)
{
ArrestReport report = (ArrestReport)e.SelectedItem;
var crimeDetailPage = new CrimeDetailPage(report.DCN, report.CrimeType);
Navigation.PushAsync(crimeDetailPage);
}
async Task <bool> Refresh()
{
if (_querycomplete)
{
return(true);
}
if (_distanceFormat)
{
// If there's no lat/long, don't load this screen but change the warning.
if (Math.Abs(Settings.PrimaryLat) < Double.Epsilon)
{
Device.BeginInvokeOnMainThread(() =>
{
warningPanel.IsVisible = true;
labelNoRecords.Text = "You need to set a primary location in order to use this feature.";
buttonSettings.Text = "Set Primary Location...";
activity.IsRunning = false;
activity.IsVisible = false;
});
return(true);
}
}
//Look for neighborhoods user subscribes to.
var ids = Global.Neighborhoods.Where(p => p.Selected).Select(p => p.ID);
// Set the title based on blotter/search result type
if (_distanceFormat)
{
Title = "1 Mile Blotter";
}
else if (_searchResults)
{
Title = "Search Results";
}
else
{
if (ids.Count() == 0)
{
// You need to select a primary neighborhood.
warningPanel.IsVisible = true;
blotterListView.IsVisible = false;
activity.IsRunning = false;
activity.IsVisible = false;
return(true);
}
else
{
if (_selectedHood == -1)
{
var nameList = Global.Neighborhoods.Where(p => p.Selected).Select(p => p.Name);
string hoodNames = string.Join("/", nameList);
Title = hoodNames;
}
else
{
var nameList = Global.Neighborhoods.Where(p => p.ID.Equals(_selectedHood)).Select(p => p.Name);
string hoodNames = string.Join("/", nameList);
Title = hoodNames;
}
}
}
// Populate the blotter data
if (_distanceFormat)
{
var crimes = await Data.GetLocalBlotter(Settings.PrimaryLat, Settings.PrimaryLong, 5280.00);
var proximitygroup = crimes.GroupBy(item => item.Proximity, (key, group) => new Group(key, group.ToArray()));
blotterListView.ItemsSource = proximitygroup;
}
else if (_searchResults)
{
var crimes = await Data.SearchCrimes(_crimeSearchCriteria);
// if there's only 1 crime result, jump straight to it!
if (crimes.Length == 1)
{
var crimeDetailPage = new CrimeDetailPage((CrimeReport)crimes[0]);
await Navigation.PushAsync(crimeDetailPage, true);
}
// Nothing came back in the search
if (crimes.Length == 0)
{
labelNoRecords.Text = "Nothing came back for your search.";
warningPanel.IsVisible = true;
buttonSettings.IsVisible = false;
activity.IsRunning = false;
activity.IsVisible = false;
return(true);
}
else
{
_data = crimes;
blotterListView.ItemsSource = crimes;
}
}
else
{
if (_selectedHood == -1)
{
var hoods = await Data.GetBlotter(ids.ToArray());
var dategroup = hoods.GroupBy(item => item.OccurredDateType, (key, group) => new Group(key, group.ToArray()));
blotterListView.ItemsSource = dategroup;
if (dategroup.Count() == 0)
{
labelNoRecords.Text = "There's no crime information for the past 10 days.";
}
}
else
{
int[] selhoodarray = new int[1];
selhoodarray[0] = _selectedHood;
var hoods = await Data.GetBlotter(selhoodarray);
var dategroup = hoods.GroupBy(item => item.OccurredDateType, (key, group) => new Group(key, group.ToArray()));
blotterListView.ItemsSource = dategroup;
if (dategroup.Count() == 0)
{
labelNoRecords.Text = "There's no crime information for the past 10 days.";
}
}
}
warningPanel.IsVisible = false;
blotterListView.IsVisible = true;
activity.IsRunning = false;
activity.IsVisible = false;
blotterListView.EndRefresh();
_querycomplete = true;
return(true);
}
public void Handle_ItemTapped(object sender, Xamarin.Forms.ItemTappedEventArgs e)
{
var crimeDetailPage = new CrimeDetailPage((CrimeReport)e.Item);
Navigation.PushAsync(crimeDetailPage);
}
public CrimesNearMeView()
{
InitializeComponent();
MyMap.MoveToRegion(
MapSpan.FromCenterAndRadius(
new Position(39.952062, -75.163543), Distance.FromMiles(0.5)));
MyMap.CustomPins = new List <CustomPin>();
Disappearing += (object sender, EventArgs e) =>
{
if (MyMap != null)
{
MyMap.IsShowingUser = false;
}
MessagingCenter.Unsubscribe <CustomPin>(this, "ShowCrimeReport");
MessagingCenter.Unsubscribe <App>(this, "GoingToSleep");
MessagingCenter.Unsubscribe <App>(this, "WakingUp");
};
//bool _needsRefresh = false;
//var timer = new Timer(delegate
//{
// Debug.WriteLine("Writing a line with a timer");
//}, _needsRefresh, 300, 300, true);
// User moved map.
MyMap.PropertyChanged += (sender, e) =>
{
try
{
if (_initialized)
{
if (!(MyMap.VisibleRegion.Equals(lastPosition)) || lastPosition == null)
{
lastPosition = MyMap.VisibleRegion;
UpdateMap();
System.GC.Collect();
}
}
}
#pragma warning disable RECS0022 // A catch clause that catches System.Exception and has an empty body
catch (Exception mapex) { Debug.WriteLine($"Map PropertyChanged problem: {mapex.Message}"); }
#pragma warning restore RECS0022 // A catch clause that catches System.Exception and has an empty body
};
// User is coming to look at the map
Appearing += (sender, e) =>
{
// Start listener for pushpin events
MessagingCenter.Subscribe <CustomPin>(this, "ShowCrimeReport", (obj) =>
{
var crimeDetailPage = new CrimeDetailPage(obj);
Navigation.PushAsync(crimeDetailPage);
});
// When app sleeps, shut off location tracing
MessagingCenter.Subscribe <App>(this, "GoingToSleep", (App obj) =>
{
if (MyMap != null)
{
MyMap.IsShowingUser = false;
}
});
// When app wakes up, turn on location tracing
MessagingCenter.Subscribe <App>(this, "WakingUp", (App obj) =>
{
if (MyMap != null)
{
MyMap.IsShowingUser = true;
}
});
// Do we have filters set?
Models.Filter setFilter = Settings.Filter;
currentFilter = setFilter;
LoadFilters();
if (!_initialized)
{
CenterTheMap();
_initialized = true;
}
UpdateMap();
MyMap.IsShowingUser = true;
};
// Initialization should be complete, attempt to center the map.
Device.BeginInvokeOnMainThread(() =>
{
if (!_initialized)
{
_initialized = true;
CenterTheMap();
}
});
}
