Android删除记录SQLite

Question

在我的 Activity 中，我有一个微调器，其中包含通过此查询从 SQLite 数据库获取的数据:

private List<String> ottieniAnni(){
    List<String> result = new LinkedList<String>();

    SQLiteDatabase db = new BHelper(this).getReadableDatabase();

    String sql = "SELECT DISTINCT strftime('%Y',"+GTable.DATE+") FROM "+GTable.TABLE_NAME;
    Cursor c = db.rawQuery(sql, null);

    while (c.moveToNext()){
        result.add(c.getString(0));
    }
    db.close();
    return result;
}

现在通过按钮，我想删除用户选择的年份中的所有记录。我用了db.delete()方法，但是这样会删除所有的记录。我应该设置一个参数但不知道如何做吗:

 SQLiteDatabase db= mHelper.getWritableDatabase();
    db.delete(GiornateTable.TABLE_NAME,   null, null );
    db.close();

Answer 1

试试看

SQLiteDatabase db= mHelper.getWritableDatabase();
int rowcount = db.delete(GiornateTable.TABLE_NAME,
                    "GIVE YOUR COLUMN NAME" + "=?",
                    new String[] { "GIVE YOUR VALUE" });
Log.d("No of record deleted",String.valueOf(rowcount));