Change sublayer visibility

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
/* 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.mapimagelayersublayervisibility;

import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;

import androidx.appcompat.app.AppCompatActivity;
import com.esri.arcgisruntime.layers.ArcGISMapImageLayer;
import com.esri.arcgisruntime.layers.SublayerList;
import com.esri.arcgisruntime.mapping.ArcGISMap;
import com.esri.arcgisruntime.mapping.Viewpoint;
import com.esri.arcgisruntime.mapping.view.MapView;

public class MainActivity extends AppCompatActivity {

  private MapView mMapView;
  private ArcGISMapImageLayer mMapImageLayer;
  private SublayerList mLayers;

  // The layer on/off menu items.
  private MenuItem mCities = null;
  private MenuItem mContinent = null;
  private MenuItem mWorld = null;

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

    // inflate MapView from layout
    mMapView = findViewById(R.id.mapView);
    // create a map
    ArcGISMap map = new ArcGISMap();
    // create a MapImageLayer with dynamically generated map images
    mMapImageLayer = new ArcGISMapImageLayer(getResources().getString(R.string.world_cities_service));
    mMapImageLayer.setOpacity(0.9f);
    // add world cities layers as map operational layer
    map.getOperationalLayers().add(mMapImageLayer);
    // set the map to be displayed in this view
    mMapView.setMap(map);
    mMapView.setViewpoint(new Viewpoint(48.354406, -99.998267, 100000000.0));
    // get the layers from the map image layer
    mLayers = mMapImageLayer.getSublayers();

  }

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

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

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

  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.menu_main, menu);

    // Get the sub layer switching menu items.
    mCities = menu.getItem(0);
    mContinent = menu.getItem(1);
    mWorld = menu.getItem(2);

    // set all layers on by default
    mCities.setChecked(true);
    mContinent.setChecked(true);
    mWorld.setChecked(true);

    return true;
  }

  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    // handle menu item selection
    //if-else is used because this sample is used elsewhere as a Library module
    int itemId = item.getItemId();
    if (itemId == R.id.Cities) {
      if (mLayers.get(0).isVisible() && mCities.isChecked()) {
        // cities layer is on and menu item checked
        mLayers.get(0).setVisible(false);
        mCities.setChecked(false);
      } else if (!mLayers.get(0).isVisible() && !mCities.isChecked()) {
        // cities layer is off and menu item unchecked
        mLayers.get(0).setVisible(true);
        Log.d("cities", String.valueOf(mLayers.get(0).getOpacity()));
        mCities.setChecked(true);
      }
      return true;
    } else if (itemId == R.id.Continents) {
      if (mLayers.get(1).isVisible() && mContinent.isChecked()) {
        // continent layer is on and menu item checked
        mLayers.get(1).setVisible(false);
        mContinent.setChecked(false);
      } else if (!mLayers.get(1).isVisible() && !mContinent.isChecked()) {
        // continent layer is off and menu item unchecked
        mLayers.get(1).setVisible(true);
        Log.d("continents", String.valueOf(mLayers.get(1).getOpacity()));
        mContinent.setChecked(true);
      }
      return true;
    } else if (itemId == R.id.World) {
      if (mLayers.get(2).isVisible() && mWorld.isChecked()) {
        // world layer is on and menu item checked
        mLayers.get(2).setVisible(false);
        mWorld.setChecked(false);
      } else if (!mLayers.get(2).isVisible() && !mWorld.isChecked()) {
        // world layer is off and menu item unchecked
        mLayers.get(2).setVisible(true);
        Log.d("world", String.valueOf(mLayers.get(2).getOpacity()));
        mWorld.setChecked(true);
      }
      return true;
    } else {
      return super.onOptionsItemSelected(item);
    }
  }

}