Asks the delegate if two gesture recognizers should be allowed to recognize gestures simultaneously.
- iOS 3.2+
- tvOS 9.0+
YES to allow both
other to recognize their gestures simultaneously. The default implementation returns
NO—no two gestures can be recognized simultaneously.
This method is called when recognition of a gesture by either
other would block the other gesture recognizer from recognizing its gesture. Note that returning
YES is guaranteed to allow simultaneous recognition; returning
NO, on the other hand, is not guaranteed to prevent simultaneous recognition because the other gesture recognizer's delegate may return