Hi,
I created the New theme. But i didnt know about export and import the theme layout. How to export and import the theme layout?
Look at ALayoutManager class. You can find methods in the class to process layout XML.
public function loadXML($data) {
To export layout you can use devtools extension
https://github.com/abantecart/developer_tools_extension
You can also check this:
http://www.abantecart.com/document_wiki/index.php/Developing_Templates_as_Extensions
If something is missing, please help us fill in the blanks