FeatureLayer

[lifeEsri]

Hello
If you have an idea how to retrieve the FeatureLayer dynamically from the map or service.

the big problem I have is that the layer is explicitly defined in the code:

<esri:FeatureLayer id="fireAreas" mode="snapshot"  outFields="*" url="http://sampleserver3.arcgisonline.com/ArcGIS/rest/services/Fire/Sheep/FeatureServer/2">