On Twitter you can't swipe out of the tweet compose screen. You have to explicitly click the "Cancel" button in the top left, and if you have anything written i

On Twitter you can't swipe out of the tweet compose screen. You have to explicitly click the "Cancel" button in the top left, and if you have anything written it'll pop a dialogue to either delete the contents, save as a draft, or cancel (go back to composing) I'm not sure how you'd swipe out of this screen.