arcgis andriod 点击后变色
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent"> <com.esri.android.map.MapView android:id="@+id/map" android:layout_width="fill_parent" android:layout_height="fill_parent" url="http://www.arcgis.com/home/webmap/viewer.html?webmap=fab9925c7c974a0aa47ea0f463535367" > </com.esri.android.map.MapView> </RelativeLayout>
java
package yanlei.example.com.querydata; import android.graphics.Color; import android.os.AsyncTask; import android.os.Bundle; import android.support.v7.app.AppCompatActivity; import com.esri.android.map.GraphicsLayer; import com.esri.android.map.MapView; import com.esri.android.map.event.OnSingleTapListener; import com.esri.android.map.event.OnStatusChangedListener; import com.esri.core.geometry.Point; import com.esri.core.geometry.SpatialReference; import com.esri.core.map.Feature; import com.esri.core.map.FeatureResult; import com.esri.core.map.Graphic; import com.esri.core.renderer.SimpleRenderer; import com.esri.core.symbol.SimpleFillSymbol; import com.esri.core.tasks.query.QueryParameters; import com.esri.core.tasks.query.QueryTask; public class MainActivity extends AppCompatActivity { MapView mMapView; GraphicsLayer graphicsLayer; Graphic fillGraphic; String queryLayer; boolean boolQuery = true; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); mMapView = (MapView) findViewById(R.id.map); queryLayer = "http://services.arcgisonline.com/ArcGIS/rest/services/Demographics/USA_Average_Household_Size/MapServer/3"; mMapView.setOnStatusChangedListener(new OnStatusChangedListener() { private static final long serialVersionUID = 1L; @Override public void onStatusChanged(Object source, STATUS status) { // TODO Auto-generated method stub if (source == mMapView && status == STATUS.INITIALIZED) { graphicsLayer = new GraphicsLayer(); SimpleRenderer sr = new SimpleRenderer( new SimpleFillSymbol(Color.RED)); graphicsLayer.setRenderer(sr); mMapView.addLayer(graphicsLayer); } } }); mMapView.setOnSingleTapListener(new OnSingleTapListener() { private static final long serialVersionUID = 1L; @Override public void onSingleTap(float x, float y) { // TODO Auto-generated method stub AsyncQueryTask ayncQuery = new AsyncQueryTask(); ayncQuery.execute(x, y); } }); } private class AsyncQueryTask extends AsyncTask<Float, Void, FeatureResult> { @Override protected FeatureResult doInBackground(Float... queryArray) { // TODO Auto-generated method stub if (queryArray == null || queryArray.length <= 1) return null; float x = queryArray[0]; float y = queryArray[1]; Point point = mMapView.toMapPoint(x, y); QueryParameters qParameters = new QueryParameters(); SpatialReference sr = SpatialReference.create(102100); qParameters.setGeometry(point); qParameters.setOutSpatialReference(sr); qParameters.setReturnGeometry(true); QueryTask qTask = new QueryTask(queryLayer); try { FeatureResult results = qTask.execute(qParameters); return results; } catch (Exception e) { e.printStackTrace(); } return null; } @Override protected void onPostExecute(FeatureResult results) { if (results != null) { for (Object element : results) { if (element instanceof Feature) { Feature feature = (Feature) element; // turn feature into graphic Graphic graphic = new Graphic(feature.getGeometry(), feature.getSymbol(), feature.getAttributes()); // add graphic to layer graphicsLayer.removeAll(); graphicsLayer.addGraphic(graphic); } } } } } @Override protected void onPause() { super.onPause(); mMapView.pause(); } @Override protected void onResume() { super.onResume(); mMapView.unpause(); } }