Android uses sqliteopenhelper to flash back

problem ：

I'm sure I'm right , however app Just keep dodging

Try ：

Delete app, reinstall

Example ：

@Override
    public void onCreate(SQLiteDatabase db) {
    
        // If there is group surface , Then delete the table 
        String drop_sql = "DROP TABLE IF EXISTS " + CHAT_GROUP + ";";
        db.execSQL(drop_sql);
        // establish group surface 
        String create_sql = "CREATE TABLE IF NOT EXISTS " + CHAT_GROUP + "("
                + "id INTEGER PRIMARY KEY AUTOINCREMENT,"
                + "group_id VARCHAR NOT NULL,"
                + "chat_type INTEGER DEFAULT NULL"
                     + ");";
        db.execSQL(create_sql);
    }

Add a new field id, Rerun fetch id Print , Flash back

String sql = String.format("select id,group_id,update_time" +
                " from %s where %s;", CHAT_GROUP, condition);

onCreate Timing of invocation