How to view ArcGIS layer legend in Android?

Question

I have 3 layers (Drainage, Bridge and Slope) in my ArcGIS Feature Server. My Android App view each layer on ArcGISmap, and set layer visibility based on checkbox tick. I am using ArcGIS Runtime SDK for Android (version 100.1).

My question is, is it possible to view the layers' legend from feature server into my Layers dialog? Means to replace the 3 cute icons.

Android App (Layers dialog in the middle)

Feature Server (layers' legend on left)

Thank you in advance!

---

UPDATE

Thanks to falldownhill's suggestion to use Create Swatch! This is my working code

// Loop each layer
for (int x=0; x<featureLayer.length; x++)
{
    try
    {
        // Try get each layer legend
        final ListenableFuture<List<LegendInfo>> layerLegend = featureLayer[x].fetchLegendInfosAsync();

        final int finalX = x;
        layerLegend.addDoneListener(new Runnable()
        {
            @Override
            public void run()
            {
                try
                {
                    // Get each layer legend
                    List<LegendInfo> legendInfo = layerLegend.get();
                    Symbol legendSymbol = legendInfo.get(0).getSymbol();
                    ListenableFuture<Bitmap> symbolSwatch = legendSymbol.createSwatchAsync(MainActivity.this, Color.TRANSPARENT);

                    // Set each layer legend
                    Bitmap symbolBitmap = symbolSwatch.get();
                    ImageView swatchImg = (ImageView) drawerDialog.findViewById(layerImageViewId[finalX]);
                    swatchImg.setImageBitmap(symbolBitmap);
                }
                catch (InterruptedException e)
                {
                    //showMessage("Animation interrupted");
                }
                catch (ExecutionException e)
                {
                    // Deal with exception during animation...
                }
            }
        });
    }
    catch (Exception e)
    {
        // Ignore changing layer legend
    }
}

Android App (Updated layers dialog with desired legend in the middle)

Answer 1

I think Create Swatch will do what you're looking for.

Just to show one way to use it:

float density = InstrumentationRegistry.getContext().getResources().getDisplayMetrics().density;
for (FeatureType type : featureTable.getFeatureTypes()) {
  for (FeatureTemplate template : type.getTemplates()) {
    Geometry geometry = //create whatever shape you want the swatch to be
    Feature feature = featureTable.createFeature(template, geometry);
    Symbol symbol = featureLayer.getRenderer().getSymbol(feature);
    ListenableFuture<Bitmap> symbolSwatch = symbol.createSwatchAsync(24, 24,
        density,color,feature.getGeometry());

    Bitmap swatch = symbolSwatch.get();
  }
}