Called to determine whether a banner should be shown when the local player receives a challenge.
- iOS 6.0–7.0Deprecated
- macOS 10.8–10.10Deprecated
- Mac Catalyst 13.0–13.0Deprecated
The received challenge.
Your delegate should return
true if it wants a banner to be displayed. Otherwise it should return
If you do not implement this method, a banner is always shown.