Meryl Silverburgh wrote:
> Thank you.
>
> I have another question about cursor.
>
> I have inserted a ContentValue like this:
> final ContentResolver cr = context.getContentResolver();
>
> ContentValue values = new ContentValues();
> values.put("title", "new title");
> values.put("x", 10);
>
> Uri result = cr.insert(CONTENT_URI ,
> values);
>
> But why when I do my query and then getColumn, I get
> java.lang.IllegalArgumentException: column 'x' does not exist
>
> Cursor c = cr.query(CONTENT_URI,
> new String[] { "title" }, "title=?",
> new String[] { "new title" }, null);
>
> if (c.getCount() >0) {
> // get an exception here:
> int xColumn = c.getColumnIndexOrThrow("x");
> }
Your table or content provider may not have a column named "x".
Just because you pass such a value in the ContentValues on insert() does
not mean it will get stored, if there is no pre-defined place to store it.
--
Mark Murphy (a Commons Guy)
http://commonsware.com | http://twitter.com/commonsguy
_The Busy Coder's Guide to Android Development_ Version 2.0 Available!
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