Android, Redefine the search button

After several fruitless searches, I ask this question :

How can you redefine the "search" button an android phone?

I wish he would serve me something other than display a search box开发者_运维百科 and a keyboard ...

Thank you

Regards

Vince

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I think this should answer your questions http://developer.android.com/guide/topics/search/search-dialog.html