Make GMSCircle respond to tap?

Question

I am using the Google Maps API for iOS and I want to make it so when you tap on a GMSCircle it pops up a little thing I coded elsewhere. I have set the circle to "tappable" but I cannot find what I need to set or make to listen for the tap. What do I use? ``` CLLocationCoordinate2D circleCenter = CLLocationCoordinate2DMake(10,10); GMSCircle *circ = [GMSCircle circleWithPosition:circleCenter radius:10]; circ.tappable = true; [circ setFillColor:[UIColor colorWithRed:1 green:0 blue:0 alpha:.5]]; circ.map = mapView_; ```

Accepted Answer

You need to use the delegate method didTapOverlay :

```
- (void) mapView: (GMSMapView *) mapView  didTapOverlay: (GMSOverlay *) overlay 
```

Here the parameter overlay indicates the overlay that was tapped. So you need to check if it equals circ.

EDIT : Adding details on how to check for circle within didTapOverlay

When `GMSCircle` is added to the map, a corresponding `GMSPolygon` is also created. If the circle is set as tappable, then on tapping it, the overlay passed to the `didTapOverlay` method is this related polygon and not the circle . So a direct comparison between the overlay and the circle is not possible. Hence as Raspu as pointed out, you can set a value in title using `circ.title =` and then inside didTapOverlay, you can check if `overlay.title` is same as `circ.title`. This works because the title property of the circle is within the corresponding polygon and hence will be present in the overlay parameter.

Make GMSCircle respond to tap?

Solution

Problem