How to develop the single application for iphone, but load different contains

How we can develop the single application for ipho开发者_如何转开发ne, but load different contains.

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Do you want to load a different user interface? You can call loadNibNamed:owner:options.

Usually your app's first nib is specified in your Info.plist and is loaded automatically. But I don't think that is a requirement. You should be able to start up you program with no nib at all, then load it programmatically with the above method.