TileDataSource CreateTileDataSource()
{
// offline map data source
string fileName = "rome_ntvt.mbtiles";
try
{
string directory = GetExternalFilesDir(null).ToString();
string path = directory + "/" + fileName;
Assets.CopyAssetToSDCard(fileName, path);
Log.Debug("Copy done to " + path);
MBTilesTileDataSource source = new MBTilesTileDataSource(0, 14, path);
return(new MemoryCacheTileDataSource(source));
}
catch (IOException e)
{
Log.Debug("MbTileFile cannot be copied: " + fileName);
Log.Debug("Message" + e.LocalizedMessage);
}
return(null);
}
public MapContainer()
{
Map = new MapView();
var timer = new Stopwatch();
timer.Start();
// NOTE: Uncomment the timer creation and BeginInvokeOnMainThread to apply a workaround
//var startTimer = new System.Threading.Timer((_) =>
//{
// Device.BeginInvokeOnMainThread(() =>
// {
MBTilesTileDataSource testDataSource = new MBTilesTileDataSource(((App)App.Current).CityDataFile);
CompiledStyleSet styleSet = new CompiledStyleSet(new ZippedAssetPackage(AssetUtils.LoadAsset("nutibright-v3.zip")));
MBVectorTileDecoder decoder = new MBVectorTileDecoder(styleSet);
VectorTileLayer testLayer = new VectorTileLayer(testDataSource, decoder);
Map.Layers.Add(testLayer);
// });
//}, null, 10, System.Threading.Timeout.Infinite);
timer.Stop();
Debug.WriteLine($"Done map initialization in {timer.ElapsedMilliseconds}ms");
MapPos pos = Map.Options.BaseProjection.FromWgs84(new MapPos(App.CITY_POS_X, App.CITY_POS_Y));
Map.SetFocusPos(pos, 0);
Map.SetZoom(15, 0);
Content = Map.ToView();
}
protected override TileDataSource CreateTileDataSource(string osm)
{
//string fileName = "world_zoom5";
string fileName = "rome_ntvt";
string extension = "mbtiles";
string packageDirectory = SupportDirectory;
string fullWritePath = Path.Combine(packageDirectory, fileName + "." + extension);
string resourceDirectory = NSBundle.MainBundle.PathForResource(fileName, extension);
return(new MBTilesTileDataSource(0, 4, resourceDirectory));
if (!Directory.Exists(packageDirectory))
{
Directory.CreateDirectory(packageDirectory);
Console.WriteLine("Directory: Does not exist... Creating");
}
else
{
Console.WriteLine("Directory: Exists");
}
try
{
// Copy bundled tile data to file system so it can be imported by package manager
using (var input = new FileStream(resourceDirectory, FileMode.Open, FileAccess.Read))
{
using (var output = new FileStream(fullWritePath, FileMode.Create, FileAccess.Write))
{
input.CopyTo(output);
}
}
MBTilesTileDataSource source = new MBTilesTileDataSource(0, 4, fullWritePath);
return(source);
}
catch {
return(null);
}
}
public static TileDataSource CreateTileDataSource(Android.Content.Context context, string fileName)
{
try
{
string directory = context.GetExternalFilesDir(null).ToString();
string path = directory + "/" + fileName;
context.Assets.CopyAssetToSDCard(fileName, path);
Log.Debug("Copy done to " + path);
MBTilesTileDataSource source = new MBTilesTileDataSource(0, 14, path);
return(new MemoryCacheTileDataSource(source));
}
catch (IOException e)
{
Log.Debug("MbTileFile cannot be copied: " + fileName);
Log.Debug("Message" + e.Message);
}
return(null);
}
