がRecyclerView

Question

でfooterViewを追加することはできません私は、アダプタソースを書いたRecyclerView.Iで私のカスタムfooterViewを追加しようとしているが、私は私のfooterView.Thisを表示することができない私の元

 private List<Transaction> transactionList; 
    public Context mContext; 
    private boolean loading; 
    private static final int TYPE_ITEM = 1; 
    private static final int TYPE_FOOTER = 2; 


    public void setmOnLoadMoreListener(OnLoadMoreListener mOnLoadMoreListener) { 
     this.mOnLoadMoreListener = mOnLoadMoreListener; 
    } 

    private OnLoadMoreListener mOnLoadMoreListener; 
    private int visibleThreshold = 5; 
    private int lastVisibleItem, totalItemCount; 


    public void setLoaded() { 
     loading = false; 
    } 


    class LoadingViewHolder extends RecyclerView.ViewHolder { 
     public MaterialProgressBar progressBar; 

     public LoadingViewHolder(View itemView) { 
      super(itemView); 
      progressBar = (MaterialProgressBar) itemView.findViewById(R.id.progressBar); 
     } 
    } 

    public class TransactionHolder extends RecyclerView.ViewHolder { 
     private TextView transactionName, transactionStatus; 

     public TransactionHolder(View view) { 
      super(view); 
      transactionName = (TextView) view.findViewById(R.id.u_transaction_name); 
      transactionStatus = (TextView) view.findViewById(R.id.u_transaction_status); 

     } 
    } 


    public TransactionRecyclerViewAdapter(List<Transaction> transactions, Context context, RecyclerView recyclerView) { 
     super(); 
     this.transactionList = transactions; 
     this.mContext = context; 
     if (recyclerView.getLayoutManager() instanceof LinearLayoutManager) { 
      final LinearLayoutManager linearLayoutManager = (LinearLayoutManager) recyclerView.getLayoutManager(); 
      recyclerView 
        .addOnScrollListener(new RecyclerView.OnScrollListener() { 
         @Override 
         public void onScrolled(RecyclerView recyclerView, 
               int dx, int dy) { 
          super.onScrolled(recyclerView, dx, dy); 

          totalItemCount = linearLayoutManager.getItemCount(); 
          lastVisibleItem = linearLayoutManager 
            .findLastVisibleItemPosition(); 
          if (!loading && totalItemCount <= (lastVisibleItem + visibleThreshold)) { 

           if (mOnLoadMoreListener != null) { 
            mOnLoadMoreListener.onLoadMore(); 
           } 
           loading = true; 
          } 
         } 
        }); 
     } 


    } 
    @Override 
    public int getItemViewType(int position) { 
     if (isPositionFooter(position)) { 
      return TYPE_FOOTER; 
     } 
     return TYPE_ITEM; 
    } 

    private boolean isPositionFooter(int position) { 
     return position == transactionList.size(); 
    } 


    @Override 
    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { 


     if (viewType == TYPE_FOOTER) { 
      View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.view_loading, parent, false); 
      return new TransactionRecyclerViewAdapter.LoadingViewHolder(v); 
     } else if (viewType == TYPE_ITEM) { 
      View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.view_transaction_recycler_item, parent, false); 
      return new TransactionRecyclerViewAdapter.TransactionHolder(v); 
     } 
     return null; 
    } 
    @Override 
    public void onBindViewHolder(RecyclerView.ViewHolder holder, final int position) { 
     if (holder instanceof TransactionHolder) { 
      TransactionHolder transactionHolder = (TransactionHolder) holder; 
      Transaction transaction = transactionList.get(position); 
      if (transaction != null) { 
       transaction.setAmount(transaction.getAmount().replace("-", "")); 
       transactionHolder.transactionName.setText(transaction.getName()); 
       transactionHolder.transactionStatus.setText(transaction.getType()); 


      } 
     } else { 
      LoadingViewHolder loadingViewHolder = (LoadingViewHolder) holder; 
      loadingViewHolder.progressBar.setVisibility(View.VISIBLE); 

     } 


    } 

    @Override 
    public int getItemCount() { 
     return transactionList == null ? 0 : transactionList.size(); 

    } 
    public Transaction getItem(int position) { 
     return transactionList.get(position); 
    } 


} 

であると私は使用このような私のアダプタ

final LinearLayoutManager layoutManager = new LinearLayoutManager(getActivity()); 
    layoutManager.setOrientation(LinearLayoutManager.VERTICAL); 
    mRecyclerView.setLayoutManager(layoutManager); 
    mTransactionAdapter = new TransactionRecyclerViewAdapter(mTransactionList, getActivity(), mRecyclerView); 
    mRecyclerView.setAdapter(mTransactionAdapter); 
    mTransactionAdapter.notifyDataSetChanged(); 

どのように私の問題を解決することができますか？私のコードで何が間違っているのか分かりません

Answer 1

あなたはここに私の答えをチェックしてください1

@Override 
public int getItemCount() { 
    return transactionList == null ? 0 : transactionList.size()+1; 

} 

Answer 2

@Override 
    public int getItemCount() { 
     return transactionList == null ? 0 : transactionList.size(); 

    } 

あなたはtransactionList.size（）+ 1個の項目が必要です。 （あなたにもフッターがあるので）。