public override void ViewDidLoad()
{
base.ViewDidLoad();
// Add default base layer
AddOnlineBaseLayer(CartoBaseMapStyle.CartoBasemapStyleVoyager);
Projection projection = MapView.Options.BaseProjection;
TileDataSource source = FileUtils.CreateTileDataSource("rome_carto-streets", "mbtiles");
// Get decoder from current layer,
// so we wouldn't need a style asset to create a decoder from scratch
MBVectorTileDecoder decoder = (MBVectorTileDecoder)(MapView.Layers[0] as VectorTileLayer).TileDecoder;
// Remove default baselayer
MapView.Layers.Clear();
// Add our new layer
var layer = new VectorTileLayer(source, decoder);
MapView.Layers.Insert(0, layer);
// Zoom to the correct location
MapPos rome = projection.FromWgs84(new MapPos(12.4807, 41.8962));
MapView.SetFocusPos(rome, 0);
MapView.SetZoom(13, 0);
}
protected override void OnCreate(Android.OS.Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
AddOnlineBaseLayer(CartoBaseMapStyle.CartoBasemapStyleDefault);
// Get decoder from current layer,
// so we wouldn't need a style asset to create a decoder from scratch
MBVectorTileDecoder decoder = (MBVectorTileDecoder)(MapView.Layers[0] as VectorTileLayer).TileDecoder;
// Remove default baselayer
MapView.Layers.Clear();
// Do the actual copying and source creation on another thread so it wouldn't block the main thread
System.Threading.Tasks.Task.Run(delegate
{
TileDataSource source = CreateTileDataSource();
var layer = new VectorTileLayer(source, decoder);
RunOnUiThread(delegate
{
// However, actual layer insertion should be done on the main thread
MapView.Layers.Insert(0, layer);
});
});
// Zoom to the correct location
MapPos rome = BaseProjection.FromWgs84(new MapPos(12.4807, 41.8962));
MapView.SetFocusPos(rome, 0);
MapView.SetZoom(13, 0);
}
protected override void OnCreate(Android.OS.Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
// Remove default baselayer
MapView.Layers.Clear();
var decoder = CartoVectorTileLayer.CreateTileDecoder(CartoBaseMapStyle.CartoBasemapStyleVoyager);
// Do the actual copying and source creation on another thread so it wouldn't block the main thread
System.Threading.Tasks.Task.Run(delegate
{
TileDataSource source = FileUtils.CreateTileDataSource(this, "rome_carto-streets.mbtiles");
var layer = new VectorTileLayer(source, decoder);
RunOnUiThread(delegate
{
// However, actual layer insertion should be done on the main thread
MapView.Layers.Insert(0, layer);
});
});
// Zoom to the correct location
MapPos rome = BaseProjection.FromWgs84(new MapPos(12.4807, 41.8962));
MapView.SetFocusPos(rome, 0);
MapView.SetZoom(13, 0);
}
protected override void OnCreate(Android.OS.Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
AddBaseLayer(CartoBaseMapStyle.CartoBasemapStyleDefault);
TileDataSource source = CreateTileDataSource();
// Get decoder from current layer,
// so we wouldn't need a style asset to create a decoder from scratch
MBVectorTileDecoder decoder = (MBVectorTileDecoder)(MapView.Layers[0] as VectorTileLayer).TileDecoder;
// Remove default baselayer
MapView.Layers.Clear();
// Add our new layer
var layer = new VectorTileLayer(source, decoder);
MapView.Layers.Insert(0, layer);
// Zoom to the correct location
MapPos rome = BaseProjection.FromWgs84(new MapPos(12.4807, 41.8962));
MapView.SetFocusPos(rome, 0);
MapView.SetZoom(13, 0);
}
protected virtual void UpdateBaseLayer()
{
string styleAssetName = vectorStyleName + ".zip";
bool styleBuildings3D = false;
if (vectorStyleName.Equals("nutibright3d"))
{
styleAssetName = BaseStyleFile;
styleBuildings3D = true;
}
BinaryData styleBytes = AssetUtils.LoadAsset(styleAssetName);
if (styleBytes == null)
{
Toast.MakeText(this, "Map style file must be in project assets: " + vectorStyleName, ToastLength.Short).Show();
return;
}
// Create style set
CompiledStyleSet vectorTileStyleSet = new CompiledStyleSet(new ZippedAssetPackage(styleBytes));
vectorTileDecoder = new MBVectorTileDecoder(vectorTileStyleSet);
// Set language, language-specific texts from vector tiles will be used
vectorTileDecoder.SetStyleParameter("lang", vectorStyleLang);
// OSM Bright style set supports choosing between 2d/3d buildings. Set corresponding parameter.
if (styleAssetName.Equals(BaseStyleFile))
{
vectorTileDecoder.SetStyleParameter("buildings3d", styleBuildings3D ? "1" : "0");
vectorTileDecoder.SetStyleParameter("markers3d", styleBuildings3D ? "1" : "0");
vectorTileDecoder.SetStyleParameter("texts3d", styleBuildings3D ? "1" : "0");
}
// Create tile data source for vector tiles
if (vectorTileDataSource == null)
{
vectorTileDataSource = CreateTileDataSource();
}
// Remove old base layer, create new base layer
if (BaseLayer != null)
{
MapView.Layers.Remove(BaseLayer);
}
BaseLayer = new VectorTileLayer(vectorTileDataSource, vectorTileDecoder);
MapView.Layers.Insert(0, BaseLayer);
}
public override void ViewDidLoad()
{
base.ViewDidLoad();
BinaryData bytes = AssetUtils.LoadAsset("carto-fonts.zip");
ZippedAssetPackage package = new ZippedAssetPackage(bytes);
string css = JsonUtils.OfflinePackageCartoCSS;
var decoder = new MBVectorTileDecoder(new CartoCSSStyleSet(css, package));
TileDataSource source = FileUtils.CreateTileDataSource("offline-packages", "mbtiles");
var layer = new VectorTileLayer(source, decoder);
MapView.Layers.Add(layer);
}
protected override void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
BinaryData bytes = AssetUtils.LoadAsset("carto-fonts.zip");
ZippedAssetPackage package = new ZippedAssetPackage(bytes);
string css = JsonUtils.OfflinePackageCartoCSS;
var decoder = new MBVectorTileDecoder(new CartoCSSStyleSet(css, package));
TileDataSource source = FileUtils.CreateTileDataSource(this, "offline-packages.mbtiles");
var layer = new VectorTileLayer(source, decoder);
MapView.Layers.Add(layer);
}
protected virtual TileDataSource CreateTileDataSource()
{
TileDataSource vectorTileDataSource = new CartoOnlineTileDataSource("nutiteq.osm");
// We don't use vectorTileDataSource directly (this would be also option),
// but via caching to cache data locally persistently/non-persistently
// Note that persistent cache requires WRITE_EXTERNAL_STORAGE permission
TileDataSource cacheDataSource = vectorTileDataSource;
if (persistentTileCache)
{
string cacheFile = GetExternalFilesDir(null) + "/mapcache.db";
cacheDataSource = new PersistentCacheTileDataSource(vectorTileDataSource, cacheFile);
}
else
{
cacheDataSource = new MemoryCacheTileDataSource(vectorTileDataSource);
}
return(cacheDataSource);
}
