RecyclerViewAdapter只显示最后一个项目

Question

我用3个片段选项卡式布局工作。起初，我用的是ListView控件，然后转移到RecyclerView的片段之一，以测试它是否在工作。当它似乎是工作，我复制的第一个片段的适配器，另2和他们改名等等。但是现在看来，他们只显示多次的最后一个项目。我认为它与适配器有关，所以我会发布适配器代码beneeth。

第i个适配器的代码（CijfersRecyclerViewAdapter.java）：

package com.bettersomtoday.arnedebeer.somtoday; 

import android.content.Context; 
import android.support.v7.widget.RecyclerView; 
import android.util.Log; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.TextView; 

import java.util.ArrayList; 
import java.util.HashMap; 

public class CijfersRecyclerViewAdapter extends RecyclerView.Adapter<CijfersRecyclerViewAdapter.ListItemViewHolder> { 

    ArrayList<HashMap<String, String>> list = new ArrayList<>(); 

    //private static final String TAG_DATA = "data"; 
    private static final String TAG_VAK = "vak"; 
    private static final String TAG_BESCHRIJVING = "beschrijving"; 
    //private static final String TAG_WEGING = "weging"; 
    private static final String TAG_CIJFER = "resultaat"; 
    //private static final String TAG_DATUM = "datum"; 
    //private static final String TAG_VOLDOENDE = "voldoende"; 
    private static final String TAG_GEEN_CIJFERS = "geencijfers"; 

    private Context mContext; 


    public CijfersRecyclerViewAdapter(Context context, ArrayList<HashMap<String, String>> list) { 
     this.list = list; 
     this.mContext = context; 
    } 

    @Override 
    public ListItemViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) { 
     View v = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.cijfer_row_item, viewGroup, false); 

     ListItemViewHolder holder = new ListItemViewHolder(v); 
     return holder; 
    } 

    @Override 
    public void onBindViewHolder(ListItemViewHolder viewHolder, int i) { 
     HashMap<String, String> e = list.get(i); 

     viewHolder.cijfer.setText(e.get(TAG_CIJFER)); 
     viewHolder.beschrijving.setText(e.get(TAG_BESCHRIJVING)); 
     viewHolder.vak.setText(e.get(TAG_VAK)); 
     viewHolder.geenCijfers.setText(e.get(TAG_GEEN_CIJFERS)); 
    } 

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

    class ListItemViewHolder extends RecyclerView.ViewHolder { 
     TextView cijfer; 
     TextView beschrijving; 
     TextView vak; 
     TextView geenCijfers; 

     public ListItemViewHolder(View itemView) { 
      super(itemView); 
      cijfer = (TextView) itemView.findViewById(R.id.cijfer); 
      beschrijving = (TextView) itemView.findViewById(R.id.cijferBeschrijving); 
      vak = (TextView) itemView.findViewById(R.id.vak); 
      geenCijfers = (TextView) itemView.findViewById(R.id.geenCijfersText); 
     } 
    } 
} 

布局（cijfer_row_item.xml）：

<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:orientation="horizontal" 
    android:layout_width="match_parent" 
    android:layout_height="?android:attr/listPreferredItemHeight" 
    android:padding="6dip" > 

    <TextView 
     android:id="@+id/cijfer" 
     android:layout_width="55sp" 
     android:layout_height="55sp" 
     android:layout_alignParentBottom="true" 
     android:layout_alignParentTop="true" 
     android:layout_marginEnd="6dip" 
     android:gravity="center" 
     android:singleLine="true" 
     android:text="0.0" 
     android:textSize="26sp" /> 

    <TextView 
     android:id="@+id/cijferBeschrijving" 
     android:layout_width="fill_parent" 
     android:layout_height="26dip" 
     android:layout_alignParentBottom="true" 
     android:layout_alignParentEnd="true" 
     android:layout_toEndOf="@id/cijfer" 
     android:ellipsize="marquee" 
     android:singleLine="true" 
     android:text="Beschrijving" 
     android:textSize="18sp" /> 

    <TextView 
     android:id="@+id/vak" 
     android:layout_width="fill_parent" 
     android:layout_height="wrap_content" 
     android:layout_above="@id/cijferBeschrijving" 
     android:layout_alignParentEnd="true" 
     android:layout_alignParentTop="true" 
     android:layout_alignWithParentIfMissing="true" 
     android:layout_toEndOf="@id/cijfer" 
     android:gravity="center_vertical" 
     android:text="Vak" 
     android:textSize="20sp" /> 

    <TextView 
     android:id="@+id/geenCijfersText" 
     android:layout_width="match_parent" 
     android:layout_height="55sp" 
     android:layout_alignParentBottom="true" 
     android:layout_alignParentTop="true" 
     android:layout_marginEnd="6dip" 
     android:gravity="center" 
     android:singleLine="true" 
     android:text="" 
     android:textSize="26sp" /> 

</RelativeLayout> 

片段布局：（fragment_cijfers.xml）

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:background="#ffffff" 
    android:orientation="vertical" 
    tools:context=".Cijfers"> 

    <android.support.v7.widget.RecyclerView 
     android:id="@+id/cijfersList" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" /> 

</LinearLayout> 

Screenshow of the problem

我希望有人知道这个解决方案

谢谢！

阿恩·德啤酒

Answer 1

显然我的适配器就没事了，问题是，我充满了ArrayList中。