我android做xmpp群聊天室,在别人邀请我的时候我调用
MultiUserChat.addInvitationListener(conn, new InvitationListener() {
@Override
public void invitationReceived(Connection arg0, String arg1, String arg2, String arg3, String arg4,
org.jivesoftware.smack.packet.Message arg5) {
Toast.makeText(MainActivity.this, "有人邀请我", 1).show();
}
});
}
会出现空指针