restore application data programmatically

Question

how can i restore application data programmatically from SDCard on rooted device???

i am worked on backup/restore applications and i did the following steps:

-Back Up case i copied data app from /data/data/PackageName/ to SDcard

then i removed the application and reinstall it

-Restore case i copied the same data app in backUp from SDcard to /data/data/PackageName/

but the application stopped when i start it?

sorry about my english

Answer 1

If application stores data in SDCard then you must backup that data also.... the path of that data is "/mnt/sdcard/Android/data/Packagename/".