How to show/hide fragment with swipe up/down like soundcloud android app -

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i getting curious know how view can created 1 shown below . drag , drop or custom view gesture detection , animations? can starting point?

viewdraghelper can used achieve effect. tutorials , samples are: dragging-with-viewdraghelper , each-navigation-drawer-hides-a-viewdraghelper , draggablepanel , androidslidinguppanel


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