issue with Key board on email view in application

I do have application in Landscape mode And I have used Mail and twitter view.

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My issue is - when I open the Mail or twitter view the view opens on Portrait mode and then the keyboard to write any thing opens in landscapemode even for twitter view where there is Browser for loging.

Can any one suiggeste how to solve this kind of issue. I am using all things is Cocos2d.

Thanks in advance