Problem using ContactsContract.Data when query
<p>I am learning android developing. Well, my appwidget failed at this line:</p>

<pre><code>Cursor cursor = context.getContentResolver().query(Contacts.CONTENT_URI,
                new String[] {Contacts.DISPLAY_NAME},
                Contacts.STARRED + "=0", null, null);
</code></pre>

<p>May I know why? Thanks.</p>

<p>Added: I have tried a few ways I used in Java to debug this line, all I got was "stop unexpectedly".</p>
