I am woefully green when it comes to using Android and the ESRI Android SDK (100.0.0). I apologize in advance for my greenhorn questions. So I am looking to display a map service made of multiple layers in a simple Android app, I am current in my studio and gradle etc, as of last night (04/26/2017). I can handle the switch statements to change them but this issue I am running into is in actually getting them to display. Here is the map service in question: https://gis-server-02.usc.edu:6443/arcgis/rest/services/pjconner/fisheriesLandings/MapServer I am currently building off of the Change Sublayer Visibility sample app hosted here on github: arcgis-runtime-samples-android/change-sublayer-visibility at master · Esri/arcgis-runtime-samples-android · GitHub The problem I am running into is that when I go to get/set the visibility on a specific sublayer, I get index out of range exceptions because I assume the GetSublayers method is failing. I am not sure why this is the case. My current code is set up almost identical to the map initialization and layer set block in the example. // inflate MapView from layout mMapView = ( MapView ) findViewById ( R . id . mapView ) ; // create a map with the Basemap Type topographic ArcGISMap map = new ArcGISMap ( Basemap . Type . TOPOGRAPHIC , 27.763528 , - 82.543717 , 6 ) ; // create a MapImageLayer with dynamically generated map images mMapImageLayer = new ArcGISMapImageLayer ( getResources ( ) . getString ( R . string . landings_service_url ) ) ; mMapImageLayer . setOpacity ( 0.5f ) ; // add world cities layers as map operational layer map . getOperationalLayers ( ) . add ( mMapImageLayer ) ; // set the map to be displayed in this view mMapView . setMap ( map ) ; // get the layers from the map image layer mLayers = mMapImageLayer . getSublayers ( ) ; //This is the line where the error occurs mLayers . get ( 0 ) . setVisible ( true ) ; Despite the service displaying by default, it still doesn't show. So I figure I may have to manually set the visibility. As stated above. GetSubLayers seems to fail which leads to Null index exceptions when trying to force the layer visibility. Is this something wrong with my service, my code? I would be truly grateful for any help!

Hey Philipp Conner, I noticed that the URL you were visiting was the HTTPS URL and not the HTTP URL. I tried using this URL: pjconner/fisheriesLandings (MapServer) Rather than the secured URL (HTTP versus HTTPS). I noticed that when I loaded this onto my phone in another app I was using, I would get Untrusted host warnings specifying that your certificate was invalid. You may want to investigate that with your IT department to ensure that your SSL Certificate is valid. Additionally, you may also want to install a web adapter so you are not visiting the port directly in your application. This is what my code used looks like: public class MainActivity extends AppCompatActivity { MapView mapView ; ArcGISMapImageLayer mMapImageLayer ; SublayerList mLayers ; ArcGISMap map ; @Override protected void onCreate ( Bundle savedInstanceState ) { super . onCreate ( savedInstanceState ) ; setContentView ( R . layout . activity_main ) ; // inflate MapView from layout mapView = ( MapView ) findViewById ( R . id . map ) ; // create a map with the Basemap Type topographic ArcGISMap map = new ArcGISMap ( Basemap . Type . TOPOGRAPHIC , 27.763528 , - 82.543717 , 6 ) ; // create a MapImageLayer with dynamically generated map images mMapImageLayer = new ArcGISMapImageLayer ( " http://gis-server-02.usc.edu:6080/arcgis/rest/services/pjconner/fisheriesLandings/MapServer " ) ; mMapImageLayer . setOpacity ( 0.5f ) ; // add world cities layers as map operational layer map . getOperationalLayers ( ) . add ( mMapImageLayer ) ; // set the map to be displayed in this view mapView . setMap ( map ) ; map . loadAsync ( ) ; mMapImageLayer . loadAsync ( ) ; mMapImageLayer . addDoneLoadingListener ( new Runnable ( ) { @Override public void run ( ) { // get the layers from the map image layer mLayers = mMapImageLayer . getSublayers ( ) ; //This is the line where the error occurs mLayers . get ( 0 ) . setVisible ( true ) ; } } ) ; } }

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mapImageLayer.GetSubLayers() failing when using map service

PhilippConner1

I am woefully green when it comes to using Android and the ESRI Android SDK (100.0.0). I apologize in advance for my greenhorn questions.

So I am looking to display a map service made of multiple layers in a simple Android app, I am current in my studio and gradle etc, as of last night (04/26/2017). I can handle the switch statements to change them but this issue I am running into is in actually getting them to display.

Here is the map service in question:

https://gis-server-02.usc.edu:6443/arcgis/rest/services/pjconner/fisheriesLandings/MapServer

I am currently building off of the Change Sublayer Visibility sample app hosted here on github:

arcgis-runtime-samples-android/change-sublayer-visibility at master · Esri/arcgis-runtime-samples-android · GitHub

The problem I am running into is that when I go to get/set the visibility on a specific sublayer, I get index out of range exceptions because I assume the GetSublayers method is failing. I am not sure why this is the case.

My current code is set up almost identical to the map initialization and layer set block in the example.

<SPAN class="comment token">// inflate MapView from layout</SPAN>
mMapView <SPAN class="operator token">=</SPAN> <SPAN class="punctuation token">(</SPAN>MapView<SPAN class="punctuation token">)</SPAN> <SPAN class="token function">findViewById</SPAN><SPAN class="punctuation token">(</SPAN>R<SPAN class="punctuation token">.</SPAN>id<SPAN class="punctuation token">.</SPAN>mapView<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>

<SPAN class="comment token">// create a map with the Basemap Type topographic</SPAN>
ArcGISMap map <SPAN class="operator token">=</SPAN> <SPAN class="keyword token">new</SPAN> <SPAN class="token class-name">ArcGISMap</SPAN><SPAN class="punctuation token">(</SPAN>Basemap<SPAN class="punctuation token">.</SPAN>Type<SPAN class="punctuation token">.</SPAN>TOPOGRAPHIC<SPAN class="punctuation token">,</SPAN> <SPAN class="number token">27.763528</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="operator token">-</SPAN><SPAN class="number token">82.543717</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="number token">6</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>

<SPAN class="comment token">// create a MapImageLayer with dynamically generated map images</SPAN>
mMapImageLayer <SPAN class="operator token">=</SPAN> <SPAN class="keyword token">new</SPAN> <SPAN class="token class-name">ArcGISMapImageLayer</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="token function">getResources</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="token function">getString</SPAN><SPAN class="punctuation token">(</SPAN>R<SPAN class="punctuation token">.</SPAN>string<SPAN class="punctuation token">.</SPAN>landings_service_url<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
mMapImageLayer<SPAN class="punctuation token">.</SPAN><SPAN class="token function">setOpacity</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="number token">0.5f</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>

<SPAN class="comment token">// add world cities layers as map operational layer</SPAN>
map<SPAN class="punctuation token">.</SPAN><SPAN class="token function">getOperationalLayers</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="token function">add</SPAN><SPAN class="punctuation token">(</SPAN>mMapImageLayer<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>

<SPAN class="comment token">// set the map to be displayed in this view</SPAN>
mMapView<SPAN class="punctuation token">.</SPAN><SPAN class="token function">setMap</SPAN><SPAN class="punctuation token">(</SPAN>map<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>

<SPAN class="comment token">// get the layers from the map image layer</SPAN>
mLayers <SPAN class="operator token">=</SPAN> mMapImageLayer<SPAN class="punctuation token">.</SPAN><SPAN class="token function">getSublayers</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>

<SPAN class="comment token">//This is the line where the error occurs</SPAN>
mLayers<SPAN class="punctuation token">.</SPAN><SPAN class="token function">get</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="token function">setVisible</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="token boolean">true</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍<SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

Despite the service displaying by default, it still doesn't show. So I figure I may have to manually set the visibility. As stated above. GetSubLayers seems to fail which leads to Null index exceptions when trying to force the layer visibility. Is this something wrong with my service, my code?

I would be truly grateful for any help!

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Accepted answers

AlexanderNohe1

Hey Philipp Conner‌,

I noticed that the URL you were visiting was the HTTPS URL and not the HTTP URL. I tried using this URL: pjconner/fisheriesLandings (MapServer)

Rather than the secured URL (HTTP versus HTTPS). I noticed that when I loaded this onto my phone in another app I was using, I would get Untrusted host warnings specifying that your certificate was invalid. You may want to investigate that with your IT department to ensure that your SSL Certificate is valid. Additionally, you may also want to install a web adapter so you are not visiting the port directly in your application.

This is what my code used looks like:

<SPAN class="keyword token">public</SPAN> <SPAN class="keyword token">class</SPAN> <SPAN class="token class-name">MainActivity</SPAN> <SPAN class="keyword token">extends</SPAN> <SPAN class="token class-name">AppCompatActivity</SPAN> <SPAN class="punctuation token">{</SPAN>

&nbsp;&nbsp;&nbsp; MapView mapView<SPAN class="punctuation token">;</SPAN>
&nbsp;&nbsp;&nbsp; ArcGISMapImageLayer mMapImageLayer<SPAN class="punctuation token">;</SPAN>
&nbsp;&nbsp;&nbsp; SublayerList mLayers<SPAN class="punctuation token">;</SPAN>
&nbsp;&nbsp;&nbsp; ArcGISMap map<SPAN class="punctuation token">;</SPAN>

&nbsp;&nbsp;&nbsp; @Override
&nbsp;&nbsp;&nbsp; <SPAN class="keyword token">protected</SPAN> <SPAN class="keyword token">void</SPAN> <SPAN class="token function">onCreate</SPAN><SPAN class="punctuation token">(</SPAN>Bundle savedInstanceState<SPAN class="punctuation token">)</SPAN> <SPAN class="punctuation token">{</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <SPAN class="keyword token">super</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="token function">onCreate</SPAN><SPAN class="punctuation token">(</SPAN>savedInstanceState<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <SPAN class="token function">setContentView</SPAN><SPAN class="punctuation token">(</SPAN>R<SPAN class="punctuation token">.</SPAN>layout<SPAN class="punctuation token">.</SPAN>activity_main<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>

<SPAN class="comment token">// inflate MapView from layout</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; mapView <SPAN class="operator token">=</SPAN> <SPAN class="punctuation token">(</SPAN>MapView<SPAN class="punctuation token">)</SPAN> <SPAN class="token function">findViewById</SPAN><SPAN class="punctuation token">(</SPAN>R<SPAN class="punctuation token">.</SPAN>id<SPAN class="punctuation token">.</SPAN>map<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>

<SPAN class="comment token">// create a map with the Basemap Type topographic</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ArcGISMap map <SPAN class="operator token">=</SPAN> <SPAN class="keyword token">new</SPAN> <SPAN class="token class-name">ArcGISMap</SPAN><SPAN class="punctuation token">(</SPAN>Basemap<SPAN class="punctuation token">.</SPAN>Type<SPAN class="punctuation token">.</SPAN>TOPOGRAPHIC<SPAN class="punctuation token">,</SPAN> <SPAN class="number token">27.763528</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="operator token">-</SPAN><SPAN class="number token">82.543717</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="number token">6</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>

<SPAN class="comment token">// create a MapImageLayer with dynamically generated map images</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; mMapImageLayer <SPAN class="operator token">=</SPAN> <SPAN class="keyword token">new</SPAN> <SPAN class="token class-name">ArcGISMapImageLayer</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="string token"><SPAN>"</SPAN><A class="jive-link-external-small" href="https://community.esri.com/external-link.jspa?url=http%3A%2F%2Fgis-server-02.usc.edu%3A6080%2Farcgis%2Frest%2Fservices%2Fpjconner%2FfisheriesLandings%2FMapServer" target="_blank">http://gis-server-02.usc.edu:6080/arcgis/rest/services/pjconner/fisheriesLandings/MapServer</A><SPAN>"</SPAN></SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; mMapImageLayer<SPAN class="punctuation token">.</SPAN><SPAN class="token function">setOpacity</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="number token">0.5f</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>

<SPAN class="comment token">// add world cities layers as map operational layer</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; map<SPAN class="punctuation token">.</SPAN><SPAN class="token function">getOperationalLayers</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="token function">add</SPAN><SPAN class="punctuation token">(</SPAN>mMapImageLayer<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>

<SPAN class="comment token">// set the map to be displayed in this view</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; mapView<SPAN class="punctuation token">.</SPAN><SPAN class="token function">setMap</SPAN><SPAN class="punctuation token">(</SPAN>map<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; map<SPAN class="punctuation token">.</SPAN><SPAN class="token function">loadAsync</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; mMapImageLayer<SPAN class="punctuation token">.</SPAN><SPAN class="token function">loadAsync</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; mMapImageLayer<SPAN class="punctuation token">.</SPAN><SPAN class="token function">addDoneLoadingListener</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="keyword token">new</SPAN> <SPAN class="token class-name">Runnable</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN> <SPAN class="punctuation token">{</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; @Override
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <SPAN class="keyword token">public</SPAN> <SPAN class="keyword token">void</SPAN> <SPAN class="token function">run</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN> <SPAN class="punctuation token">{</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <SPAN class="comment token">// get the layers from the map image layer</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; mLayers <SPAN class="operator token">=</SPAN> mMapImageLayer<SPAN class="punctuation token">.</SPAN><SPAN class="token function">getSublayers</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>

<SPAN class="comment token">//This is the line where the error occurs</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; mLayers<SPAN class="punctuation token">.</SPAN><SPAN class="token function">get</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="token function">setVisible</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="token boolean">true</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <SPAN class="punctuation token">}</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <SPAN class="punctuation token">}</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>





&nbsp;&nbsp;&nbsp; <SPAN class="punctuation token">}</SPAN>
<SPAN class="punctuation token">}</SPAN>
<SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

All comments

AlexanderNohe1

Happy to help!

PhilippConner1

Alex, this was a great help! I was able to contact the schools System Admin and he is looking into the SSL issue. In the interim I will be using the unsecured URL while deving. Thay you so much for the help!

AlexanderNohe1

Hey Philipp Conner‌,

I noticed that the URL you were visiting was the HTTPS URL and not the HTTP URL. I tried using this URL: pjconner/fisheriesLandings (MapServer)

This is what my code used looks like:

<SPAN class="keyword token">public</SPAN> <SPAN class="keyword token">class</SPAN> <SPAN class="token class-name">MainActivity</SPAN> <SPAN class="keyword token">extends</SPAN> <SPAN class="token class-name">AppCompatActivity</SPAN> <SPAN class="punctuation token">{</SPAN>

&nbsp;&nbsp;&nbsp; MapView mapView<SPAN class="punctuation token">;</SPAN>
&nbsp;&nbsp;&nbsp; ArcGISMapImageLayer mMapImageLayer<SPAN class="punctuation token">;</SPAN>
&nbsp;&nbsp;&nbsp; SublayerList mLayers<SPAN class="punctuation token">;</SPAN>
&nbsp;&nbsp;&nbsp; ArcGISMap map<SPAN class="punctuation token">;</SPAN>

&nbsp;&nbsp;&nbsp; @Override
&nbsp;&nbsp;&nbsp; <SPAN class="keyword token">protected</SPAN> <SPAN class="keyword token">void</SPAN> <SPAN class="token function">onCreate</SPAN><SPAN class="punctuation token">(</SPAN>Bundle savedInstanceState<SPAN class="punctuation token">)</SPAN> <SPAN class="punctuation token">{</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <SPAN class="keyword token">super</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="token function">onCreate</SPAN><SPAN class="punctuation token">(</SPAN>savedInstanceState<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <SPAN class="token function">setContentView</SPAN><SPAN class="punctuation token">(</SPAN>R<SPAN class="punctuation token">.</SPAN>layout<SPAN class="punctuation token">.</SPAN>activity_main<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>

<SPAN class="comment token">// inflate MapView from layout</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; mapView <SPAN class="operator token">=</SPAN> <SPAN class="punctuation token">(</SPAN>MapView<SPAN class="punctuation token">)</SPAN> <SPAN class="token function">findViewById</SPAN><SPAN class="punctuation token">(</SPAN>R<SPAN class="punctuation token">.</SPAN>id<SPAN class="punctuation token">.</SPAN>map<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>

<SPAN class="comment token">// create a map with the Basemap Type topographic</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ArcGISMap map <SPAN class="operator token">=</SPAN> <SPAN class="keyword token">new</SPAN> <SPAN class="token class-name">ArcGISMap</SPAN><SPAN class="punctuation token">(</SPAN>Basemap<SPAN class="punctuation token">.</SPAN>Type<SPAN class="punctuation token">.</SPAN>TOPOGRAPHIC<SPAN class="punctuation token">,</SPAN> <SPAN class="number token">27.763528</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="operator token">-</SPAN><SPAN class="number token">82.543717</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="number token">6</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>

<SPAN class="comment token">// create a MapImageLayer with dynamically generated map images</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; mMapImageLayer <SPAN class="operator token">=</SPAN> <SPAN class="keyword token">new</SPAN> <SPAN class="token class-name">ArcGISMapImageLayer</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="string token"><SPAN>"</SPAN><A class="jive-link-external-small" href="https://community.esri.com/external-link.jspa?url=http%3A%2F%2Fgis-server-02.usc.edu%3A6080%2Farcgis%2Frest%2Fservices%2Fpjconner%2FfisheriesLandings%2FMapServer" target="_blank">http://gis-server-02.usc.edu:6080/arcgis/rest/services/pjconner/fisheriesLandings/MapServer</A><SPAN>"</SPAN></SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; mMapImageLayer<SPAN class="punctuation token">.</SPAN><SPAN class="token function">setOpacity</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="number token">0.5f</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>

<SPAN class="comment token">// add world cities layers as map operational layer</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; map<SPAN class="punctuation token">.</SPAN><SPAN class="token function">getOperationalLayers</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="token function">add</SPAN><SPAN class="punctuation token">(</SPAN>mMapImageLayer<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>

<SPAN class="comment token">// set the map to be displayed in this view</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; mapView<SPAN class="punctuation token">.</SPAN><SPAN class="token function">setMap</SPAN><SPAN class="punctuation token">(</SPAN>map<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; map<SPAN class="punctuation token">.</SPAN><SPAN class="token function">loadAsync</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; mMapImageLayer<SPAN class="punctuation token">.</SPAN><SPAN class="token function">loadAsync</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; mMapImageLayer<SPAN class="punctuation token">.</SPAN><SPAN class="token function">addDoneLoadingListener</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="keyword token">new</SPAN> <SPAN class="token class-name">Runnable</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN> <SPAN class="punctuation token">{</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; @Override
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <SPAN class="keyword token">public</SPAN> <SPAN class="keyword token">void</SPAN> <SPAN class="token function">run</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN> <SPAN class="punctuation token">{</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <SPAN class="comment token">// get the layers from the map image layer</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; mLayers <SPAN class="operator token">=</SPAN> mMapImageLayer<SPAN class="punctuation token">.</SPAN><SPAN class="token function">getSublayers</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>

<SPAN class="comment token">//This is the line where the error occurs</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; mLayers<SPAN class="punctuation token">.</SPAN><SPAN class="token function">get</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">.</SPAN><SPAN class="token function">setVisible</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="token boolean">true</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <SPAN class="punctuation token">}</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <SPAN class="punctuation token">}</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN>





&nbsp;&nbsp;&nbsp; <SPAN class="punctuation token">}</SPAN>
<SPAN class="punctuation token">}</SPAN>
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