集成环信demo后，进入群聊，点击发送按钮，就崩溃，求破

1已经传了chattype
2接收到了chatgroupid
3已经在application中初始化
 
logcat：
 Process: com.example.administrator.bazipaipan, PID: 26126
    java.lang.RuntimeException: please init first!
            at com.example.administrator.bazipaipan.chat.huanxin.applib.utils.HXPreferenceUtils.getInstance(HXPreferenceUtils.java:60)
            at com.example.administrator.bazipaipan.chat.huanxin.UserProfileManager.getCurrentUserNick(UserProfileManager.java:176)
            at com.example.administrator.bazipaipan.chat.huanxin.UserProfileManager.getCurrentUserInfo(UserProfileManager.java:121)
            at com.example.administrator.bazipaipan.chat.huanxin.utils.UserUtils.setCurrentUserNick(UserUtils.java:77)
            at com.example.administrator.bazipaipan.chat.huanxin.adapter.MessageAdapter.getView(MessageAdapter.java:420)
            at android.widget.AbsListView.obtainView(AbsListView.java:3189)
            at android.widget.ListView.makeAndAddView(ListView.java:2159)
            at android.widget.ListView.fillSpecific(ListView.java:1649)
            at android.widget.ListView.layoutChildren(ListView.java:1966)
            at android.widget.AbsListView.onLayout(AbsListView.java:2982)
            at android.view.View.layout(View.java:15769)
            at android.view.ViewGroup.layout(ViewGroup.java:4925)
            at android.support.v4.widget.SwipeRefreshLayout.onLayout(SwipeRefreshLayout.java:584)
            at android.view.View.layout(View.java:15769)
            at android.view.ViewGroup.layout(ViewGroup.java:4925)
            at android.widget.RelativeLayout.onLayout(RelativeLayout.java:1154)
            at com.zhy.autolayout.AutoRelativeLayout.onLayout(AutoRelativeLayout.java:62)
            at android.view.View.layout(View.java:15769)
            at android.view.ViewGroup.layout(ViewGroup.java:4925)
            at android.widget.RelativeLayout.onLayout(RelativeLayout.java:1154)
            at com.zhy.autolayout.AutoRelativeLayout.onLayout(AutoRelativeLayout.java:62)
            at android.view.View.layout(View.java:15769)
            at android.view.ViewGroup.layout(ViewGroup.java:4925)
            at android.widget.FrameLayout.layoutChildren(FrameLayout.java:500)
            at android.widget.FrameLayout.onLayout(FrameLayout.java:435)
            at android.view.View.layout(View.java:15769)
            at android.view.ViewGroup.layout(ViewGroup.java:4925)