File list (Check if you may need any files):
FilePickerExample
.................\Assets
.................\......\AboutAssets.txt
.................\FileListAdapter.cs
.................\FileListFragment.cs
.................\FileListRowViewHolder.cs
.................\FilePickerActivity.cs
.................\FilePickerExample.csproj
.................\FilePickerExample.sln
.................\FilePickerExample.userprefs
.................\Helpers.cs
.................\Properties
.................\..........\AndroidManifest.xml
.................\..........\AssemblyInfo.cs
.................\Resources
.................\.........\Drawable
.................\.........\........\file.png
.................\.........\........\folder.png
.................\.........\........\ic_launcher.png
.................\.........\Layout
.................\.........\......\Main.axml
.................\.........\......\file_picker_list_item.axml
.................\.........\Resource.Designer.cs
.................\.........\Values
.................\.........\......\Strings.xml
.................\.........\drawable-hdpi
.................\.........\.............\file.png
.................\.........\.............\folder.png
.................\.........\.............\ic_launcher.png
.................\.........\drawable-ldpi
.................\.........\.............\ic_launcher.png
.................\.........\drawable-mdpi
.................\.........\.............\file.png
.................\.........\.............\folder.png
.................\.........\.............\ic_launcher.png
.................\.........\drawable-xhdpi
.................\.........\..............\ic_launcher.png
.................\.........\layout-large
.................\.........\............\main.axml