iphone - Custom border of uitextfield -

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i need make login form facebook app (http://pttrns.com/logins#/detail/cf098fbe9dc609472c0c80d257db7ee2). didn't find default decision. suppose must make border of uitextfield. ideas on how accomplish this?

set borderstyle of text view uitextborderstylenone , can place them on top of whatever want. in facebook's case, looks they're on top of table view, put image behind them.


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