Can anybody help me to solve this exception which is occurring in my code?

02-10 17:16:32.406: E/AndroidRuntime(8619): android.database.sqlite.SQLiteException: Can't downgrade database from version 2 to 1

I'm stucked in this. and should i really do care about this "Database Version" thing?

解决方案

Assuming you are using Android SQLiteOpenHelper, you need to override onDowngrade if you want to be able to run your application with a database on the device with a higher version than your code can handle.

You should care about this "Database Version thing" if ever your database schema is ever going to change (and in general, there is good chance it would).