我如何使用 selectionArgs两个 字符串在查询（）？我希望我可以将其设置为空，因为我没有使用它。我只是试图从数据库加载整个无序，未分组表成光标。

How do I use the selectionArgs String in query()? I wish I could just set it to null, as I have no use for it. I am just trying to load an entire unsorted, ungrouped table from a database into a Cursor.

推荐答案

selectionArgs两个取代任何问号在选择字符串。

selectionArgs replace any question marks in the selection string.

例如：

String[] args = { "first string", "second@string.com" };
Cursor cursor = db.query("TABLE_NAME", null, "name=? AND email=?", args, null);

至于你的问题 - 你可以使用空

as for your question - you can use null