Display Drawing Status

Screenshot of Display Drawing Status App

Description

The Display Drawing Status app shows how to use the DrawStatus value representing drawing state of the MapView to display an Android ProgressBar while the map is loading.

Features

  • ArcGISMap
  • MapView
  • ServiceFeatureTable
  • DrawStatus
  • DrawStatusChangedEvent
  • DrawStatusChangedListener

Developer Pattern

The listener interface for receiving DrawStatus changed events from the MapView:

mMapView.addDrawStatusChangedListener(new DrawStatusChangedListener() {
    @Override
    public void drawStatusChanged(DrawStatusChangedEvent drawStatusChangedEvent) {
        if(drawStatusChangedEvent.getDrawStatus() == DrawStatus.IN_PROGRESS){
            progressBar.setVisibility(View.VISIBLE);
            Log.d("drawStatusChanged", "spinner visible");
        }else if (drawStatusChangedEvent.getDrawStatus() == DrawStatus.COMPLETED){
            progressBar.setVisibility(View.INVISIBLE);
        }
    }
});

Code

/* Copyright 2016 Esri
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

package com.esri.arcgisruntime.sample.displaydrawingstatus;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.ProgressBar;

import com.esri.arcgisruntime.data.ServiceFeatureTable;
import com.esri.arcgisruntime.geometry.Envelope;
import com.esri.arcgisruntime.geometry.SpatialReferences;
import com.esri.arcgisruntime.layers.FeatureLayer;
import com.esri.arcgisruntime.mapping.ArcGISMap;
import com.esri.arcgisruntime.mapping.Basemap;
import com.esri.arcgisruntime.mapping.Viewpoint;
import com.esri.arcgisruntime.mapping.view.DrawStatus;
import com.esri.arcgisruntime.mapping.view.DrawStatusChangedEvent;
import com.esri.arcgisruntime.mapping.view.DrawStatusChangedListener;
import com.esri.arcgisruntime.mapping.view.MapView;

public class MainActivity extends AppCompatActivity {

    private MapView mMapView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        final ProgressBar progressBar = (ProgressBar) findViewById(R.id.progressBar);

        // inflate MapView from layout
        mMapView = (MapView) findViewById(R.id.mapView);
        // create a map with the Basemap Type topographic
        ArcGISMap map = new ArcGISMap(Basemap.createTopographic());
        // create an envelope
        Envelope targetExtent = new Envelope(-13639984.0, 4537387.0, -13606734.0, 4558866.0, SpatialReferences.getWebMercator());
        // use envelope to set initial viewpoint
        Viewpoint initViewpoint = new Viewpoint(targetExtent);
        // set the initial viewpoint in the map
        map.setInitialViewpoint(initViewpoint);

        // create a feature table from a service url
        ServiceFeatureTable svcFeaturetable = new ServiceFeatureTable(getResources().getString(R.string.service_feature_table_url));
        // create a feature layer
        FeatureLayer featureLayer = new FeatureLayer(svcFeaturetable);
        // add feature layer to map
        map.getOperationalLayers().add(featureLayer);

        // set the map to be displayed in this view
        mMapView.setMap(map);

        //[DocRef: Name=Monitor map drawing, Category=Work with maps, Topic=Display a map]
        mMapView.addDrawStatusChangedListener(new DrawStatusChangedListener() {
            @Override
            public void drawStatusChanged(DrawStatusChangedEvent drawStatusChangedEvent) {
                if(drawStatusChangedEvent.getDrawStatus() == DrawStatus.IN_PROGRESS){
                    progressBar.setVisibility(View.VISIBLE);
                    Log.d("drawStatusChanged", "spinner visible");
                }else if (drawStatusChangedEvent.getDrawStatus() == DrawStatus.COMPLETED){
                    progressBar.setVisibility(View.INVISIBLE);
                }
            }
        });
        //[DocRef: END]
    }

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

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