Show a simple marker symbol on a map.
      
  
    
Use case
Customize the appearance of a point suitable for the data. For example, a point on the map styled with a circle could represent a drilled borehole location, whereas a cross could represent the location of an old coal mine shaft.
How to use the sample
The sample loads with a predefined simple marker symbol, set as a red circle.
How it works
- Create a 
SimpleMarkerSymbol. - Create a 
Graphicpassing in aPointand the simple marker symbol as parameters. - Add the graphic to the graphics overlay with 
graphicsOverlay.getGraphics().add(graphic). 
Relevant API
- Graphic
 - GraphicsOverlay
 - Point
 - SimpleMarkerSymbol
 
Tags
symbol, visualization
Sample Code
MainActivity.java
/* Copyright 2016 ESRI
 *
 * All rights reserved under the copyright laws of the United States
 * and applicable international laws, treaties, and conventions.
 *
 * You may freely redistribute and use this sample code, with or
 * without modification, provided you include the original copyright
 * notice and use restrictions.
 *
 * See the Sample code usage restrictions document for further information.
 *
 */
package com.esri.arcgisruntime.sample.simplemarkersymbol;
import android.graphics.Color;
import android.os.Bundle;
import androidx.appcompat.app.AppCompatActivity;
import com.esri.arcgisruntime.ArcGISRuntimeEnvironment;
import com.esri.arcgisruntime.geometry.Point;
import com.esri.arcgisruntime.geometry.SpatialReferences;
import com.esri.arcgisruntime.mapping.ArcGISMap;
import com.esri.arcgisruntime.mapping.BasemapStyle;
import com.esri.arcgisruntime.mapping.Viewpoint;
import com.esri.arcgisruntime.mapping.view.Graphic;
import com.esri.arcgisruntime.mapping.view.GraphicsOverlay;
import com.esri.arcgisruntime.mapping.view.MapView;
import com.esri.arcgisruntime.symbology.SimpleMarkerSymbol;
public class MainActivity extends AppCompatActivity {
  private MapView mMapView;
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    // authentication with an API key or named user is required to access basemaps and other
    // location services
    ArcGISRuntimeEnvironment.setApiKey(BuildConfig.API_KEY);
    // inflate MapView from layout
    mMapView = findViewById(R.id.mapView);
    // create a map with the imagery basemap
    ArcGISMap map = new ArcGISMap(BasemapStyle.ARCGIS_IMAGERY);
    // set the map to be displayed in the mapview
    mMapView.setMap(map);
    mMapView.setViewpoint(new Viewpoint(new Point(-226773, 6550477, SpatialReferences.getWebMercator()), 7500));
    // create a new graphics overlay and add it to the map view
    GraphicsOverlay graphicsOverlay = new GraphicsOverlay();
    mMapView.getGraphicsOverlays().add(graphicsOverlay);
    //[DocRef: Name=Point graphic with symbol, Category=Fundamentals, Topic=Symbols and Renderers]
    //create a simple marker symbol
    SimpleMarkerSymbol symbol = new SimpleMarkerSymbol(SimpleMarkerSymbol.Style.CIRCLE, Color.RED, 12);
    //add a new graphic with a new point geometry
    Point graphicPoint = new Point(-226773, 6550477, SpatialReferences.getWebMercator());
    Graphic graphic = new Graphic(graphicPoint, symbol);
    graphicsOverlay.getGraphics().add(graphic);
    //[DocRef: END]
  }
  @Override
  protected void onPause() {
    super.onPause();
    // pause MapView
    mMapView.pause();
  }
  @Override
  protected void onResume() {
    super.onResume();
    // resume MapView
    mMapView.resume();
  }
  @Override
  protected void onDestroy() {
    super.onDestroy();
    // dispose MapView
    mMapView.dispose();
  }
}