How to implement android navigation drawer like this?
TopLevelView1 ~ TopLevelView4 can select and no children
TopVevelView5 can collaspe
My question is that if my group structure like this for example
All
Stared
Category
----mp3
----txt
----doc
----pdf
when I select all then show all file.
when I select stared then show stared file only.
when I select mp3 then show only mp3 files.
and Category can expand and collapse.