La vista horizontal del reciclador no muestra nada

Tengo una vista de reciclador horizontal en un diseño relativo, todo parece bien, pero en el diseño no muestra ningún elemento de la vista de reciclar. Hay algunas mismas preguntas en el sitio web, pero no puedo encontrar el problema. Aquí está el código :

Adaptador RecyclerView:

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public class ExamDetailRecyclerViewAdapter extends RecyclerView.Adapter<ExamDetailRecyclerViewAdapter.DetailViewHolder> { private String[] examNameList; private Integer[] examImageIds; private String[] examPriceList; private static Activity activity; public ExamDetailRecyclerViewAdapter(Activity activity, String[] examNameList, Integer[] examImageIds, String[] examPriceList) { this.examNameList = examNameList; this.activity = activity; this.examImageIds = examImageIds; this.examPriceList = examPriceList; } @Override public int getItemCount() { return examNameList.length; } @Override public long getItemId(int position) { return position; } public DetailViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) { View itemView = LayoutInflater.from(viewGroup.getContext()).inflate( R.layout.exam_detail_hlistview_item, viewGroup, false); return new DetailViewHolder(itemView); } public static class DetailViewHolder extends RecyclerView.ViewHolder implements OnClickListener { TextView examNameTextView; ImageView examImageView; TextView examPriceTextView; RatingBar examRatingBar; public DetailViewHolder(View v) { super(v); examNameTextView = (TextView) v .findViewById(R.id.exDetail_hListView_exam_name); examImageView = (ImageView) v .findViewById(R.id.exDetail_hListView_image); examPriceTextView = (TextView) v .findViewById(R.id.exDetail_hListView_exam_price); examRatingBar = (RatingBar) v .findViewById(R.id.exDetail_hListView_exam_rating_bar); v.setOnClickListener(this); } @Override public void onClick(View v) { // TODO Auto-generated method stub Intent i = new Intent(v.getContext(), ExamDetailActivity.class); activity.startActivity(i); } } @Override public void onBindViewHolder(DetailViewHolder detailViewHolder, int i) { // TODO Auto-generated method stub detailViewHolder.examNameTextView.setText(examNameList[i]); String num = displayNumbertoFarsi(examPriceList[i]); detailViewHolder.examPriceTextView.setText(num); detailViewHolder.examImageView.setImageResource(examImageIds[i]); detailViewHolder.examRatingBar .setOnRatingBarChangeListener(new OnRatingBarChangeListener() { @Override public void onRatingChanged(RatingBar ratingBar, float rating, boolean fromUser) { Toast.makeText(activity, "Rating Value: " + String.valueOf(rating), Toast.LENGTH_SHORT).show(); } }); } } 

Disposición de la vista del reciclador

 <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res/ir.elenoon.bazmoon" xmlns:tools="http://schemas.android.com/tools" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" > <include android:id="@+id/toolbar_exam" layout="@layout/toolbar" /> <RelativeLayout android:layout_width="match_parent" android:layout_height="0dp" android:layout_weight="1" > <ScrollView android:layout_width="fill_parent" android:layout_height="fill_parent" android:layout_above="@+id/about_exam_bottom_layout" android:background="@color/chromatic_grey" android:scaleType="fitXY" android:scrollbars="vertical" > <RelativeLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:background="@drawable/bg" > <RelativeLayout android:id="@+id/fourth_partition" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_below="@+id/third_partition" android:layout_marginBottom="15dp" android:layout_marginLeft="30dp" android:layout_marginRight="30dp" android:layout_marginTop="15dp" android:background="@drawable/button_border" android:padding="12dp" > <app.textView.custemFont.TextViewPlus android:id="@+id/about_exam_same_exams_title" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentRight="true" android:layout_alignParentTop="true" android:layout_margin="5dp" android:text="@string/about_exam_same_exams_title" android:textColor="#000000" android:textStyle="bold" app:customFont1="DroidNaskhRegularSystemUI.ttf" /> <android.support.v7.widget.RecyclerView android:id="@+id/exam_detail_hListView" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_below="@+id/about_exam_same_exams_title" android:background="#000000" android:focusable="false" android:paddingBottom="20dp" android:paddingTop="20dp" android:scrollbars="horizontal" /> </RelativeLayout> </RelativeLayout> </ScrollView> </RelativeLayout> </LinearLayout> 

Recyler ver elemento xml:

 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res/ir.elenoon.bazmoon" android:layout_width="match_parent" android:layout_height="match_parent" android:background="@color/white" android:orientation="horizontal" android:padding="5dp" > <ImageView android:id="@+id/exDetail_hListView_image" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:layout_marginBottom="5dp" android:layout_marginTop="5dp" android:contentDescription="@string/image_button_contentDescription" android:scaleType="fitXY" android:src="@drawable/icon_luncher" /> <app.textView.custemFont.TextViewPlus android:id="@+id/exDetail_hListView_exam_name" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:layout_marginBottom="5dp" android:layout_marginTop="5dp" android:text="exam_name" android:textColor="@color/black" app:customFont1="DroidNaskhRegularSystemUI.ttf" /> <RelativeLayout android:id="@+id/bottom_grid_view_layout" android:layout_width="match_parent" android:layout_height="wrap_content" > <app.textView.custemFont.TextViewPlus android:id="@+id/exDetail_hListView_exam_price" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentRight="true" android:layout_centerVertical="true" android:layout_gravity="right" android:layout_marginBottom="5dp" android:layout_marginTop="5dp" android:layout_toRightOf="@+id/exDetail_hListView_exam_rating_bar" android:text="exam_price" android:textColor="@color/black" app:customFont1="Byekan.ttf" /> <RatingBar android:id="@+id/exDetail_hListView_exam_rating_bar" style="@style/foodRatingBarSmall" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentLeft="true" android:layout_centerVertical="true" android:isIndicator="true" android:numStars="5" android:rating="3" android:stepSize="0.1" /> </RelativeLayout> </LinearLayout> 

Actividad principal:

 public class ExamDetailActivity extends AppCompatActivity { String[] examNameList = { "Java", "C", "C++", "C#", "Jsp", "Microsoft .Net", "Android", "PHP", "Jquery", "JavaScript" }; String[] examPriceList = { "1000 ت", "2000 ت", "3000 ت", "4000 ت", "5000 ت", "6000 ت", "7000 ت", "8000 ت", "9000 ت", "10 000 ت" }; // Keep all Images in array Integer[] examImageIds = { R.drawable.s1, R.drawable.s2, R.drawable.s3, R.drawable.s4, R.drawable.s5, R.drawable.s6, R.drawable.s7, R.drawable.s8, R.drawable.s9, R.drawable.s10 }; ExamDetailRecyclerViewAdapter mDetailHListViewAdapter; private RecyclerView recyclerView; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.exam_detail); recyclerView = (RecyclerView) findViewById(R.id.exam_detail_hListView); recyclerView.setHasFixedSize(true); LinearLayoutManager llm = new LinearLayoutManager(this); llm.setOrientation(LinearLayoutManager.HORIZONTAL); recyclerView.setLayoutManager(llm); ExamDetailRecyclerViewAdapter examDetailHListViewAdapter = new ExamDetailRecyclerViewAdapter( this, examNameList, examImageIds, examPriceList); recyclerView.setAdapter(examDetailHListViewAdapter); }} 

 public class Exam { String examName; String price; int imageId; // getter and setters for exame name, price, and image id } 

 List<Exam> examList; public ExamDetailRecyclerViewAdapter(Activity activity, List<Exam> examList) { this.examList = examList; this.activity = activity; } 

 @Override public void onBindViewHolder(DetailViewHolder detailViewHolder, int position) { // TODO Auto-generated method stub Exam exam = examList.get(position); detailViewHolder.examNameTextView.setText(exam.getExamName()); String num = displayNumbertoFarsi(exam.getPrice(); detailViewHolder.examPriceTextView.setText(num); detailViewHolder.examImageView.setImageResource(exam.getImageId()); detailViewHolder.examRatingBar .setOnRatingBarChangeListener(new OnRatingBarChangeListener() { @Override public void onRatingChanged(RatingBar ratingBar, float rating, boolean fromUser) { Toast.makeText(activity, "Rating Value: " + String.valueOf(rating), Toast.LENGTH_SHORT).show(); } }); } } 

 compile 'org.solovyev.android.views:linear-layout-manager:0.5@aar' 

 LinearLayoutManager layoutManager = new org.solovyev.android.views.llm.LinearLayoutManager(this, LinearLayoutManager.HORIZONTAL, false);