Android add a rounded line to my picture? border [duplicate]

This question already has answers here: Border over a bitmap with rounded corners in Android 开发者_开发知识库 (6 answers) Closed 6 years ago.

How can I add a rounded border to my picture?

I d like to draw that "blue" line there on the border.

Thanks

edited:

this is not a control, this is a bitmap, drawable, on a mapview

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Use a 9-patch image for the background of your control.