can not get users smack 4.14 in android

I'm in the computer.

      Roster.getInstanceFor(XmppUtil.getConnection()).getEntries()    is  == 2

request Stanza message :

<iq to='test@yangxingcundemacbook-pro-2.local/android_app' id='jkBCn-6' type='result'><query xmlns='jabber:iq:roster'><item jid='test3@yangxingcundemacbook-pro-2.local' name='test3' subscription='both'><group>Friends</group></item><item jid='xingcun@yangxingcundemacbook-pro-2.local' subscription='from'></item><item jid='test2@yangxingcundemacbook-pro-2.local' name='test2' subscription='both'><group>Friends</group></item></query></iq>

but in the android

  Roster.getInstanceFor(XmppUtil.getConnection()).getEntries()  is ==0

    not stanza message

tell my why ?