Android Open Source - arcgis-runtime-samples-android Locate M G R S Activity

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License

The source code is released under:

Apache License

Java Source Code

/* Copyright 2013 ESRI
 */*from w w  w.j  a va2s. c o m*/
 * 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.android.samples.mgrsgrid;

import android.app.Activity;
import android.graphics.Color;
import android.os.Bundle;

import com.esri.android.map.GraphicsLayer;
import com.esri.android.map.MapView;
import com.esri.android.map.ags.ArcGISTiledMapServiceLayer;
import com.esri.android.map.event.OnSingleTapListener;
import com.esri.core.geometry.CoordinateConversion;
import com.esri.core.geometry.CoordinateConversion.MGRSConversionMode;
import com.esri.core.geometry.Point;
import com.esri.core.map.Graphic;
import com.esri.core.symbol.SimpleMarkerSymbol;
import com.esri.core.symbol.TextSymbol;

public class LocateMGRSActivity extends Activity {

  MapView mMapView;
  GraphicsLayer gl = null;

  /** Called when the activity is first created. */
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    // Retrieve the map and initial extent from XML layout
    mMapView = (MapView) findViewById(R.id.map);
    // create a Tile Layer from String resource URL
    ArcGISTiledMapServiceLayer baseMap = new ArcGISTiledMapServiceLayer(
        this.getResources().getString(R.string.basemap_url));
    // add layer to map view
    mMapView.addLayer(baseMap);
    // create graphics layer to show results
    gl = new GraphicsLayer();
    // add graphic layer to map view
    mMapView.addLayer(gl);
    // enable map to wrap around date line
    mMapView.enableWrapAround(true);
    // attribute Esri logo on map
    mMapView.setEsriLogoVisible(true);

    // on single tap convert the map coordinates to grid reference
    mMapView.setOnSingleTapListener(new OnSingleTapListener() {

      private static final long serialVersionUID = 1L;

      public void onSingleTap(float screenX, float screenY) {
        // remove any previous graphics
        gl.removeAll();
        // get map point
        Point mapPoint = mMapView.toMapPoint(screenX, screenY);
        // convert the coordinates to military grid strings

        String mgrsPoint = CoordinateConversion.pointToMgrs(mapPoint,
            mMapView.getSpatialReference(),
            MGRSConversionMode.NEW_STYLE, 6, true, true);

        // String[] mgrsPoint = mMapView.getSpatialReference()
        // .toMilitaryGrid(MGRSConversionMode.NEW_STYLE, 6,
        // true, true, new Point[] { mapPoint });
        // create a symbol for point
        SimpleMarkerSymbol sms = new SimpleMarkerSymbol(Color.YELLOW,
            15, SimpleMarkerSymbol.STYLE.X);
        // create a text symbol for point coords
        TextSymbol txtSym = new TextSymbol(20, mgrsPoint, Color.RED);
        txtSym.setOffsetX(10);
        txtSym.setOffsetX(10);
        // add point and symbol to Graphic
        Graphic gMarker = new Graphic(mapPoint, sms);
        // add text symbol to graphic
        Graphic gText = new Graphic(mapPoint, txtSym);
        // add graphics to graphics alyer
        gl.addGraphics(new Graphic[] { gMarker, gText });
      }
    });
  }

  @Override
  protected void onDestroy() {
    super.onDestroy();
  }

  @Override
  protected void onPause() {
    super.onPause();
    mMapView.pause();
  }

  @Override
  protected void onResume() {
    super.onResume();
    mMapView.unpause();
  }

}

Java Source Code List

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