This an android inside the tree menu, like QQ column as a function

Expandable
..........\ExpandableListActivity
..........\......................\.classpath
..........\......................\.project
..........\......................\AndroidManifest.xml
..........\......................\assets
..........\......................\bin
..........\......................\...\AndroidManifest.xml
..........\......................\...\R.txt
..........\......................\...\classes
..........\......................\...\.......\android
..........\......................\...\.......\.......\support
..........\......................\...\.......\.......\.......\v7
..........\......................\...\.......\.......\.......\..\appcompat
..........\......................\...\.......\.......\.......\..\.........\R$anim.class
..........\......................\...\.......\.......\.......\..\.........\R$attr.class
..........\......................\...\.......\.......\.......\..\.........\R$bool.class
..........\......................\...\.......\.......\.......\..\.........\R$color.class
..........\......................\...\.......\.......\.......\..\.........\R$dimen.class
..........\......................\...\.......\.......\.......\..\.........\R$drawable.class
..........\......................\...\.......\.......\.......\..\.........\R$id.class
..........\......................\...\.......\.......\.......\..\.........\R$integer.class
..........\......................\...\.......\.......\.......\..\.........\R$layout.class
..........\......................\...\.......\.......\.......\..\.........\R$string.class
..........\......................\...\.......\.......\.......\..\.........\R$style.class
..........\......................\...\.......\.......\.......\..\.........\R$styleable.class
..........\......................\...\.......\.......\.......\..\.........\R.class
..........\......................\...\.......\com
..........\......................\...\.......\...\example
..........\......................\...\.......\...\.......\expandablelistactivity
..........\......................\...\.......\...\.......\......................\BuildConfig.class
..........\......................\...\.......\...\.......\......................\MainActivity.class
..........\......................\...\.......\...\.......\......................\R$anim.class
..........\......................\...\.......\...\.......\......................\R$attr.class
..........\......................\...\.......\...\.......\......................\R$bool.class
..........\......................\...\.......\...\.......\......................\R$color.class
..........\......................\...\.......\...\.......\......................\R$dimen.class
..........\......................\...\.......\...\.......\......................\R$drawable.class
..........\......................\...\.......\...\.......\......................\R$id.class
..........\......................\...\.......\...\.......\......................\R$integer.class
..........\......................\...\.......\...\.......\......................\R$layout.class
..........\......................\...\.......\...\.......\......................\R$menu.class
..........\......................\...\.......\...\.......\......................\R$string.class
..........\......................\...\.......\...\.......\......................\R$style.class
..........\......................\...\.......\...\.......\......................\R$styleable.class
..........\......................\...\.......\...\.......\......................\R.class
..........\......................\...\jarlist.cache
..........\......................\...\res
..........\......................\gen
..........\......................\...\android
..........\......................\...\.......\support
..........\......................\...\.......\.......\v7
..........\......................\...\.......\.......\..\appcompat
..........\......................\...\.......\.......\..\.........\R.java
..........\......................\...\com
..........\......................\...\...\example
..........\.................

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