Sometimes when creating a new vector asset from Android Studio, all icons are not displayed. Either it displays a few icons, or none. The fix here is to delete the icons_metadata.txt file under Android SDK, Android\Sdk\icons\material. Once deleted, take the vector assets and it will display all the icons. But this issue will occur again. So the fix for this is to open the vector assets icons list and close the wizard. It will generate the icons_metadata.txt file and this time, set the file as read-only. The size for this file is approx. 373 KB.