framework for the development of iphone

I built in a cocoa app xcode project, which used the NSTextField, but I built a window_base app, how do not recognize NSTextField, recognize UITextField under this project, the heroes who ask, what in the end these two classes relations under the framework of NS and UI framework under too? Hope to provide a ~
iphone in the end there are several frameworks under it?
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NSTextField that stuff is ready to Mac OS
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UITextField is dedicated to the whole iphone Pad and out? That is a gross exaggeration?
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Also, why I created controller in cocoa app works just inherit from NSObject, but in window_base app works controller but must inherit from UIViewController it? Getting very confused ~ ~ sad to say, all four days do not know what to ask you heroes ~ ~
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reference to the third floor jcp312097937 reply:

And why I created controller in cocoa app works just inherit from NSObject, but in window_base app works controller but it must be inherited from UIViewController? Getting very confused ~ ~ sad to say, do not know what all four days ~ ~ ask you heroes

Which version you? My Project Wizard in cocoa app developers are mac os.
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references, 4th Floor xuwening reply:

reference to the third floor jcp312097937 reply:

Also, why I created controller in cocoa app works just inherit from NSObject, but in window_base app works controller but must inherit from UIViewController it? Getting very confused ~ ~ sad to say, all four days do not know what to ask you heroes
~ ~

Which version you? My Project Wizard in cocoa app belong mac o ......

Version 4.0.2 I have a textbook and this is not the same as above
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references, 5th Floor jcp312097937 reply:

references, 4th Floor xuwening reply:

References to the third floor jcp312097937 reply:

Also, why I created controller in cocoa app works just inherit from NSObject, but in window_base app works controller but must inherit from UIViewController it? Getting very confused ~ ~ sad to say, all four days do not know what to ask you heroes
~ ~

Which version you? I ......

iphone sdk on mac sdk though modified, but many are not the same, the upper frame this collection apart from Foudation Universal, the other is not okay. Of course, what should the underlying C library are common.

I think so ~ ~ ~ ~ ~
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Well, almost, I looked under these days - Results posted it, could not say elaborate ~