UpgradeHelper

Upgrade

Example

public class Upgrade extends UpgradeHelper {
    public Upgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
        super(db, oldVersion, newVersion);
    }
    //Logic for what to do when the app is upgraded
    @Override
    public void upgrade(DatabaseHelper database) {
        switch (oldVersion) {
            case 2:
            case 3:
                break;
            default:
                for (TableHelper t : database.all_tables()) {
                    DropTable dropTable = new DropTable(t.table_name());
                    Database.megaSafeDropTable(dropTable.ImSure().ifExists(), db);
                    Database.megaCreateTable(t.CREATE_TABLE(), db);
                }
        }
    }
}

Variables and Methods

Constructor matching super

upgrade()

This method is called when the database is upgraded. Put all your logic for upgrading in this function. It's recommended to delete the tables and recreate if the version number is not know or recorded.