Identify graphics

Display an alert message when a graphic is tapped.

Use case

A user may wish to select a graphic on a map to view relevant information about it.

How to use the sample

Tap on a graphic to identify it. You will see an alert message displayed.

How it works

1. Create a GraphicsOverlay and add it to the MapView.
2. Add a Graphic along with a SimpleFillSymbol to the graphics overlay.
3. Use the MapView.onSingleTapGesture(perform:) to get the screen point where a user tapped.
4. Identify the graphic on the map view with MapViewProxy.identify(on:screenPoint:tolerance:returnPopupsOnly:maximumResults:).

Relevant API

• Graphic
• GraphicsOverlay
• IdentifyGraphicsOverlayResult
• MapView

Tags

graphics, identify