我的XML如下-live_test_question_change_dialog_layout.XML

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <TextView
        android:id="@+id/live_test_change_question_option_id"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/a"
        android:background="@drawable/option_number_background"
        android:textStyle="bold"
        android:paddingTop="5dp"
        android:paddingBottom="5dp"
        android:paddingStart="10dp"
        android:paddingEnd="10dp"
        />

</RelativeLayout>

ShowDialog方法如下-

  /*---------------------------------------------------*/

public void showDialog(){

    final Dialog dialog = new Dialog(getApplicationContext(), R.style.FullHeightDialog);
    dialog.setContentView(R.layout.live_test_question_change_dialog_layout);
    dialog.setCancelable(false);

    if (dialog.getWindow() != null){
        dialog.getWindow().setLayout(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
    }

    RecyclerView recyclerView = dialog.findViewById(R.id.live_test_question_change_dialog_rec_view_id);
    recyclerView.setLayoutManager(new LinearLayoutManager(getApplicationContext()));

    ArrayList<String> questionNumberList = new ArrayList<>();

    for(int i = 1; i<= testModel.getTotalQuestions(); i++){
        questionNumberList.add(String.valueOf(i));
    }

    CustomAdapter customAdapter = new CustomAdapter(questionNumberList);
    recyclerView.setAdapter(customAdapter);

    dialog.show();

}

/*--------------------------------------------------*/

但当我试图显示给对话时应用程序崩溃了-

    android.view.InflateException: Binary XML file line #7: Error inflating class android.support.v7.widget.RecyclerView

这个代码有什么问题？ 如何解决这个问题？