Contacts like ListView [closed]

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I tried to develop an like 开发者_如何学Ccontacts ListView for my own listview, for do that I develop an activity with an ListView which use an my owm Adapter.

This adapter extends BaseAdapter and implements SectionIndexer, and I have got this result:

But I would like have a result like this (this screenshot was captured on a Samsung Galaxy S):

Someone could give me the right way?

Thanks in advance.