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android. database. sqlite. SQLiteException: Can't downgrade database from version 2 to 1

2022-04-21 14:34:00 【CSDN Q & A】

android.database.sqlite.SQLiteException: Can't downgrade database from version 2 to 1 What are the possible reasons for this exception ？ There is also how to solve ？ Here are android stduio Error reporting position 

/** *  Encapsulate writable database objects db The creation of  */    private SQLiteDatabase getDB(Context context) {        MyDatabaseHelper myDatabaseHelper = MyDatabaseHelper.getInstance(context);        return myDatabaseHelper.getWritableDatabase();// Wrong position     }


Take the answer ：

Did you downgrade the database version number ？ stay APP Without uninstalling and clearing data , The database version number can only be increased but not decreased

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