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I want to implement the chat functionality in my application. So I want to know how to implement that scrolling part which contains chat messages in chat view of application. I have seen that kind of chat view in many application like facebook and others. I am wondered what that exact scrolling component is which allows us to programatically add the message and then scrolls it as new messages come. I want to implement the exact view as in facebook. How to implement that. I read about UIScrollView, UITextView but didn't got in that what I want. help me...