FeatureLayer events??? Which one fires when load / drawing complete?

[DerrickMartin]

I'm adding a FeatureLayer to a map and setting the definitionExpression for the layer. What I want is to zoom to the features that are loaded. I can't seem to find the event that is fired when the loading / drawing of the layer is complete. I've tried both the load and the update-end events, but it seems both of them are getting fired before the features are actually on the map. Any ideas?

[KenBuja]

Have you tried using the map's update-end event?

[DerrickMartin]

I tried that, but since I do a map.setExtent based on the extent of the features, it gets stuck in a loop, where the update-end fires, I do the zoom, which then triggers another map update�?�

Maybe I should re-word my question as�?� How to zoom to the extent of a feature layer after applying a definition expression?

[JasonZou · Accepted solution]

To prevent the recursive loop, use a flag variable, like below.

1. var bolDefExpSet = false;



2. set bolDefExpSet to true right after featureLayer.setDefinitionExpression.



3. map.on("update-end", function() {


    if (bolDefExpSet) {
        // set map extent to the feature layer feature extent
        map.setExtent(...);

        // reset bolDefExpSet to prevent the recursive loop
        bolDefExpSet = false;       
    }
});

[DerrickMartin]

Thank you! Using the Ken's idea for update-end and zj's idea to stop the looping this is now working.
Too bad I can't give both of you the correct answer 😞

[Anonymous User]

If you only want the function to run once you can use the dojo on.once() method. Using what zj wrote:

map.on.once("update-end", function() {
    // set map extent to the feature layer feature extent
    map.setExtent(...);   
    }
});