customize a launcher

I am creating a launcher application, using launcher 3 code in my application, which is working fine. But I want that when user uses my launcher, he should be able to import all his homes screen shortcuts and folders to my launcher - Like Evie launcher does ([login to view URL]). When user opens Evie launcher, it gives option to import shortcuts and folders from currently installed launcher applications. And some how it reads the database of other launcher application and mirror the launcher home screen. There is ImportDataTask function in launcher3, but I am not able to crack it. I want a freelancer, who can do the "import home screen layout" feature.