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);
