Android application upgrade without a database
===

I have an application that *doesn't use databases* but it has some *shared preferences*.
During application update, I need to perform some changes to the existing preferences and also adding some new preferences.

By googling I found that, we can handle application upgrade migration through *onUpgrade()* method.But that method requires database name that doesn't exists in my app.

> public void onUpgrade(SQLiteDatabase db, int oldVersion, int
> newVersion)

Please suggest me a solution to upgrade the existing shared preferences during application update.