Как распарсить VkApiPoll

Помогите распарсить VkApiPoll.

бьет ошибку

if (attachment instanceof VKApiPoll){
                final VKApiPoll poll = (VKApiPoll) attachment;
                Log.d("TAG", "pool question: " + poll.question);
                    holder.layone2.setVisibility(View.VISIBLE);
                    holder.pps1.setText(poll.question);
                    holder.layone2.setOnClickListener(new View.OnClickListener() {
                        @Override
                        public void onClick(View v) {
                            final PollView pollView = (PollView) LayoutInflater.from(ctx).inflate(R.layout.poll_layout, null);
                            AlertDialog.Builder dialog = new AlertDialog.Builder(ctx);
                            dialog.setTitle(poll.question);
                            dialog.setView(pollView);
                            dialog.setNegativeButton("OK", new DialogInterface.OnClickListener() {
                                public void onClick(DialogInterface dialog, int which) {
                                    dialog.cancel();
                                }});
                    VKList<VKApiPoll.Answer> answers = poll.answers;
                    if (answers != null && !answers.isEmpty()) {
                        pollView.bind(answers);
                        dialog.show();}}});
                }

PollView:

public class PollView extends ScrollView{
    ViewGroup answersContainer;
    public PollView(Context context, AttributeSet attrs) {
        super(context, attrs);
    }
    public void bind(VKList<VKApiPoll.Answer> answers) {
        for (VKApiPoll.Answer answer : answers) {
            AnswerView answerView = (AnswerView)LayoutInflater.from(getContext()).inflate(R.layout.poll_answer, this, false);
            answerView.bind(answer);
            answersContainer.addView(answerView);
        }
    }
}

бьет ошибку: вот на этом месте:

final PollView pollView = (PollView) LayoutInflater.from(ctx).inflate(R.layout.poll_layout, null);
FATAL EXCEPTION: main
                                                                                  Process: ///, PID: 3041
java.lang.ClassCastException: android.widget.LinearLayout cannot be cast to ....PollView
    at .....PostAdapter$4.onClick(PostAdapter.java:245)
    at android.view.View.performClick(View.java:5204)
    at android.view.View$PerformClick.run(View.java:21153)
    at android.os.Handler.handleCallback(Handler.java:739)
    at android.os.Handler.dispatchMessage(Handler.java:95)
    at android.os.Looper.loop(Looper.java:148)
    at android.app.ActivityThread.main(ActivityThread.java:5417)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)