android - how to implement this sliding navigation menu? -

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i'm trying replicate following sliding navigation menu functionality (the 1 "top stories", "world", "u.s" etc.) no luck far. i'm feeling there obvious way achieve this, i'm seeing in many apps. based on library shipped android? starting point or materials used achieve welcomed.
keep in mind, don't care design/xmls, implementation logic.

it nothing horizontalscrollview contains child views.


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