なぜrecyclerviewはゼロ位置値のみを表示しますか？

Question

私は、recyclerviewが単一のアイテムだけを表示しているという奇妙なエラーに直面しています。 私は以下の私のrecyclerviewアダプターのコードです..... recylerviewでデータバインディングを使用しています

ここ

public class ImageSetAdapter extends RecyclerView.Adapter<ImageSetAdapter.PictureItemHolder> { 

    List<HouseModelSet> data; 

    public ImageSetAdapter(List<HouseModelSet> data) { 
     this.data = data; 
    } 

    @Override 
    public PictureItemHolder onCreateViewHolder(ViewGroup parent, int viewType) { 
     LayoutInflater inflater = LayoutInflater.from(parent.getContext()); 
     View v = inflater.inflate(R.layout.item_home_picture,parent,false); 
     /*ItemHomePictureBinding itemHomePictureBinding = DataBindingUtil.inflate(inflater, R.layout.item_home_picture, parent, false);*/ 

     ItemHomePictureBinding binding = ItemHomePictureBinding.inflate(inflater,parent,false); 

     return new PictureItemHolder(binding.getRoot()); 
    } 

    @Override 
    public void onBindViewHolder(PictureItemHolder holder, int position) { 
     HouseModel hm1 = data.get(position).getHouseModels().get(0); 
     HouseModel hm2 = data.get(position).getHouseModels().get(1); 
     HouseModel hm3 = data.get(position).getHouseModels().get(2); 
     HouseModel hm4 = data.get(position).getHouseModels().get(3); 
     HouseModel hm5 = data.get(position).getHouseModels().get(4); 
     holder.binding.house1.setHouse(hm1); 
     holder.binding.house2.setHouse(hm2); 
     holder.binding.house3.setHouse(hm3); 
     holder.binding.house4.setHouse(hm4); 
     holder.binding.house5.setHouse(hm5); 
    } 

    @BindingAdapter("android:src") 
    public static void loadImage(ImageView imageView, int v){ 
     Glide.with(imageView.getContext()).load(v).into(imageView); 
    } 

    @Override 
    public int getItemCount() { 
     return data.size(); 
    } 

    public class PictureItemHolder extends RecyclerView.ViewHolder{ 

     ItemHomePictureBinding binding; 

     public PictureItemHolder(View itemView) { 
      super(itemView); 

      binding = DataBindingUtil.bind(itemView); 
     } 
    } 
} 

はAndroidがここ

public class MainActivity extends AppCompatActivity { 

    private ActivityMainBinding binding; 

    ImageSetAdapter mImageSetAdapter; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 
     binding = DataBindingUtil.setContentView(this,R.layout.activity_main); 

     //--------Set and Get Tool Bar-------// 
     setSupportActionBar(binding.appbar); 
     getSupportActionBar().setTitle(""); 

     mImageSetAdapter = new ImageSetAdapter(getHousesSet()); 

     binding.recyclerView.setLayoutManager(new LinearLayoutManager(this)); 
     binding.recyclerView.setAdapter(mImageSetAdapter); 
    } 

    private List<HouseModelSet> getHousesSet() { 
     List<HouseModelSet> list = new ArrayList<>(); 
     List<HouseModel> houses = new ArrayList<>(); 
     for (int i = 0; i < 4; i++) { 

      HouseModel houseModel1 = new HouseModel("City " + i, 1.34f + i , R.drawable.home8); 
      HouseModel houseModel2 = new HouseModel("Sialkot " + i, 2.43f + i,R.drawable.home8); 
      HouseModel houseModel3 = new HouseModel("Sialkot " + i, 3.43f + i,R.drawable.home8); 
      HouseModel houseModel4 = new HouseModel("Sialkot " + i, 4.43f + i,R.drawable.home8); 
      HouseModel houseModel5 = new HouseModel("Sialkot " + i, 5.43f + i,R.drawable.home8); 

      houses.add(houseModel1); 
      houses.add(houseModel2); 
      houses.add(houseModel3); 
      houses.add(houseModel4); 
      houses.add(houseModel5); 
     } 
     list.add(new HouseModelSet(houses)); 
     return list; 
    } 

MainActivity

ためのコードであることは私のxmlレイアウトである

<RelativeLayout 
    android:layout_width="wrap_content" 
    android:layout_height="170dp" 
    android:layout_weight="2" 
    android:background="@drawable/home8" 
    tools:showIn="@layout/item_home_picture"> 

    <ImageView 
     android:id="@+id/img1" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" 
     android:scaleType="centerCrop" 
     android:src="@{house.image}" /> 

    <TextView 
     android:id="@+id/price" 
     style="@style/item_image_text_price" 
     android:layout_above="@+id/city" 
     android:text="@{String.valueOf(house.price)}" 
     android:textSize="20sp"/> 

    <TextView 
     android:id="@+id/city" 
     android:layout_alignParentBottom="true" 
     style="@style/item_image_text_city" 
     android:text="@{house.city}" 
     android:textSize="15sp" /> 
</RelativeLayout> 

ここに私のコンテナレイアウトは

<LinearLayout 
    android:id="@+id/root" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:orientation="vertical"> 

    <android.support.v7.widget.CardView 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:layout_margin="5dp"> 

     <TextView 
      android:id="@+id/cataorytxt" 
      android:layout_width="match_parent" 
      android:layout_height="wrap_content" 
      android:gravity="center" 
      android:padding="10dp" 
      android:text="New Apartments" 
      android:textSize="20sp" 
      android:textStyle="bold" /> 

    </android.support.v7.widget.CardView> 

     <LinearLayout 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:orientation="vertical"> 

      <TextView 
       android:id="@+id/text_city" 
       android:layout_width="match_parent" 
       android:layout_height="wrap_content" 
       android:gravity="center" 
       android:padding="10dp" 
       android:text="Sialkot" 
       android:textSize="14sp" 
       android:textStyle="bold" /> 

      <LinearLayout 
       android:layout_width="wrap_content" 
       android:layout_height="wrap_content" 
       android:orientation="horizontal" 
       android:weightSum="4"> 

       <LinearLayout 
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content" 
        android:orientation="vertical" 
        android:layout_weight="2" 
        android:layout_marginRight="2dp"> 

        <include android:id="@+id/house1" 
         layout="@layout/house_container_item" /> 

       </LinearLayout> 

       <LinearLayout 
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content" 
        android:orientation="vertical" 
        android:layout_weight="2" 
        android:layout_marginStart="2dp" 
        android:layout_marginLeft="2dp"> 

        <include android:id="@+id/house2" 
         layout="@layout/house_container_item" /> 

       </LinearLayout> 
      </LinearLayout> 

      <LinearLayout 
       android:layout_width="wrap_content" 
       android:layout_height="wrap_content" 
       android:orientation="horizontal" 
       android:baselineAligned="false" 
       android:layout_marginBottom="5dp" 
       android:layout_marginTop="5dp" 
       android:weightSum="4"> 
       <LinearLayout 
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content" 
        android:layout_weight="2" 
        android:layout_marginRight="2dp"> 

        <include android:id="@+id/house3" 
         layout="@layout/house_container_item" /> 

       </LinearLayout> 
       <LinearLayout 
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content" 
        android:layout_weight="2" 
        android:layout_marginLeft="2dp"> 

        <include android:id="@+id/house4" 
         layout="@layout/house_container_item" /> 

       </LinearLayout> 

      </LinearLayout> 

      <include android:id="@+id/house5" 
       layout="@layout/house_container_item" /> 

     </LinearLayout> 
</LinearLayout> 

Answer 1

あなたのリストは一度だけ電話します。

list.add(new HouseModelSet(houses)); 

その

private List<HouseModelSet> getHousesSet() { 
    List<HouseModelSet> list = new ArrayList<>(); 

    for (int i = 0; i < 4; i++) { 
     List<HouseModel> houses = new ArrayList<>(); 
     HouseModel houseModel1 = new HouseModel("City " + i, 1.34f + i , R.drawable.home8); 
     HouseModel houseModel2 = new HouseModel("Sialkot " + i, 2.43f + i,R.drawable.home8); 
     HouseModel houseModel3 = new HouseModel("Sialkot " + i, 3.43f + i,R.drawable.home8); 
     HouseModel houseModel4 = new HouseModel("Sialkot " + i, 4.43f + i,R.drawable.home8); 
     HouseModel houseModel5 = new HouseModel("Sialkot " + i, 5.43f + i,R.drawable.home8); 

     houses.add(houseModel1); 
     houses.add(houseModel2); 
     houses.add(houseModel3); 
     houses.add(houseModel4); 
     houses.add(houseModel5); 
     list.add(new HouseModelSet(houses)); 
    } 

    return list; 
} 

あなたRecyclerViewは大丈夫ですが、それが唯一のリストの最初の5項目を取得するように、あなたの関数を変更し

。

は、リストとあなたのrecyclerviewの最初の位置に25の項目を入れているだけなのでリストの1つのサイズとリストの後、最初の5つの項目を持っています。そのため、ビュー内の単一のアイテムのみを表示できます。