Switching from AGSFeatureLayer to AGSFeatureTable

Question

Hello all,

So I've been using AGSFeatureLayer along with AGSGraphic to add/edit/delete features from layers.

for(AGSGraphic *graphic in self.featureLayer)...

This has worked great, letting me cycle through the feature layer and find graphics I need/want to change.

Now that I have been working on getting the app to run offline, I found that I need to create a geodatabase with feature tables.

I created a geodatabase, a tpk file, etc.

When offline, I can load the layers from the geodatabase, they come in as AGSFeatureTables in geodatabase.featureTables.

Then I use AGSFeatureTableLayer to add them to the map.

My problem comes from AGSFeatureLayer has a graphics layer, while AGSFeatureTableLayer doesnt.

When I need to get a feature, am I suppose to use the queryWithResults function on AGSFeatureTable everytime?

Thanks for any advice/help.

DiveshGoyal · Answer

Can you make sure that the result features geometry is in the same spatial reference as the map's spatial reference? You'll need to set AGSQuery outSpatialReference property

HrishikeshPol · Answer

Hey,

I'm trying to add features to feature layer. But unable add it. Below is my code. Can you help me to do this please?

in viewDidLoad

self.featureLayer1.queryDelegate = self;

self.queryTask = [[AGSQueryTask alloc] initWithURL:self.featureLayer1.URL];

self.queryTask.delegate = self;

self.query = [AGSQuery query];

User *user = [ModelFacade currentUserInContext:[ModelFacade currentContext]];

self.query.whereClause = [NSString stringWithFormat:@UserID='{%@}'", user.userID];

self.query.geometry = envelope;

[self.queryTask executeWithQuery:self.query] ;

#delegate method.

- (void)queryTask:(AGSQueryTask *)queryTask operation:(NSOperation*)op didExecuteWithFeatureSetResult:(AGSFeatureSet *)featureSet

{

NSInteger index;

for (index = 0; index <featureSet.features.count; index++)

{

AGSSimpleFillSymbol * fillSym = [AGSSimpleFillSymbol simpleFillSymbol];

fillSym.style = AGSSimpleFillSymbolStyleSolid;

fillSym.color = [UIColor blackColor];

AGSGraphic * graphic = [featureSet.features objectAtIndex: index];

graphic.symbol = fillSym;

[self.featureLayer1 addFeatures:@[graphic]];

}

[self.featureLayer1 refresh];

NSLog(featureSet.features);

Able to get all records in log but not on map view.

Can you please help me with this.

}

KyleDunaway · Answer

So Im using queryResultsWithParameters to get the features from the layer.

This works, and I can access the features.

Thanks