While you have a way for your users to create claim items, the users have no way to delete the claim items that they have created. A common pattern in lists on mobile apps is to allow the user to swipe right to dismiss or delete items. RecyclerView provides some excellent and easy-to-use structures to enable this sort of behavior; however, it's always important to ensure that users don't delete items by mistake.
In the past, most user interfaces used confirmation dialogs when executing destructive actions. However, these "are you sure" dialogs are a horrible distraction for most users, because such messages violate a key principle--the application assumes that the user probably doesn't want to perform an action that they just took. In reality, the user probably did mean to delete the item, but the application interrupts them to ask whether they're sure about their choice. A much better behavior is to assume that the user does want to take the action, but then to give them...