Click Android device screen, the value is null ids variables, don't get data? Please help analyze possible causes! Thank you teacher!

liutao — Mon, 09 Nov 2015 14:09:09 GMT

question：Click Android device screen, the value is null ids variables, don't get data? Please help analyze possible causes! Thank you teacher!

1、develop environment: ArcGIS for Android 10.2.4 Eclipise + ArcGIS Map 10.3 share runtime GeoDatabase

2、Code

public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
mMapView = new MapView(this);
mMapView.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT,LayoutParams.FILL_PARENT));
String urltpk=Environment.getExternalStorageDirectory().getPath()+"/map/map2.tpk";
ArcGISLocalTiledLayer arm= new ArcGISLocalTiledLayer(urltpk);
        mMapView.addLayer(arm,0);
        String urldata= Environment.getExternalStorageDirectory().getPath()+"/map/map2.geodatabase";
        try {
            db=new Geodatabase(urldata);
         } catch (FileNotFoundException e) {
             e.printStackTrace();
         }

        featureTable= db.getGeodatabaseTables().get(0);
        featureLayer= new FeatureLayer(featureTable);
        mMapView.addLayer(featureLayer,1);

        mMapView.setOnSingleTapListener(new OnSingleTapListener() {

   public void onSingleTap(float x, float y) {
    long[] ids = featureLayer.getFeatureIDs(x,y,30);     // ids is empty, get less data, please help Analysis reason?
                if (ids.length > 0 && ids != null) {
                Feature feature = featureLayer.getFeature(ids[0]);
                }
   }
});
         setContentView(mMapView);

Re: Click Android device screen, the value is null ids variables, don't get data? Please help analyze possible causes! Thank you teacher!

MengyiGuo — Wed, 16 Dec 2015 22:56:20 GMT

getFeatureIDs(float x, float y, int tolerance) Identifies the features for the specified device screen coordinates and search tolerance

Could you please test getFeature(long oid) to get the Feature specified by its ID?

In this way we can test if the featurelayer is added correctly to the map and narrow down the issue.

topic Re: Click Android device screen, the value is null ids variables, don't get data? Please help analyze possible causes! Thank you teacher! in ArcGIS Runtime SDK for Android Questions

Click Android device screen, the value is null ids variables, don't get data? Please help analyze possible causes! Thank you teacher!

Re: Click Android device screen, the value is null ids variables, don't get data? Please help analyze possible causes! Thank you teacher!