Android How to get recently photo taken by camera only

The Gallery app obtains camera images by using a content resolver overImages.Media.EXTERNAL_CONTENT_URI and filtering the results by Media.BUCKET_ID. The bucket identifier is determined with the following code:

This is how it display on my project . for how to make a dialog like that , please check this link, and about my project , please  click here for more information about FunStack.
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For more info, review the ImageManager and ImageList classes of the Gallery app source code.

from : http://stackoverflow.com/a/4495753