why content uri is not working in this case
<pre><code>Uri sare_sms = Uri.parse("content://contacts/");    
Cursor c = getContentResolver().query(sare_sms, null, null, null, null);

TextView txt = ( TextView ) findViewById (R.id.txt);
txt.setText( new Integer(c.getColumnCount()).toString());
</code></pre>

<p>this code is not working </p>

<p>but </p>

<pre><code>Uri sare_sms = Uri.parse("content://sms/inbox/");
Cursor c = getContentResolver().query(sare_sms, null, null, null, null);

TextView txt = ( TextView ) findViewById (R.id.txt);
txt.setText( new Integer(c.getColumnCount()).toString());
</code></pre>

<p>and this working correctly why ?</p>

<p>&amp; i have included </p>

<pre><code>uses-permission android:name="android.permission.READ_SMS" 
uses-permission android:name="android.permission.READ_CONTACTS"
</code></pre>
