This isn't a technical questions, more a quest for knowledge.
I have never owned an Android device only ever iOS so have no idea of the natural gestures Android users use frequently. I am writing my app for Android and have to display a "Contexual menu". The way this is shown is user performs a "long press" on a ListView.
On iOS needing the user to perform a long press gesture isn't always obvious so I would tend to add a prompt telling them to long press to see options.
My question is do Android users need to have the prompt or for them is a long press as natural as a swipe?