android - Recyclerview 中的多个编辑文本

Question

我们正在开发一款可以分摊团体费用的应用程序。为此，您可以选择您希望与其分享下一份账单的人。我制作了一种“ ListView 项目”，其中包含每个用户的“借方”和“贷方”字段，并根据共享付款的人数将这些项目添加到 Recyclerview。但是，现在我正在尝试读取在这些编辑文本中输入的所有值，但我不知道如何读取。在 recyclerview 中生成列表的代码如下:

private void initRecyclerView() {
    rvTransactions = (RecyclerView) findViewById(R.id.rvTransactions);
    lmTransactions = new LinearLayoutManager(this);
    rvTransactions.setLayoutManager(lmTransactions);
    transactionAdapter = new RecyclerView.Adapter<CustomViewHolder>() {
        @Override
        public CustomViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
            View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.list_item_transaction, viewGroup, false);
            return new CustomViewHolder(view);
        }

        @Override
        public void onBindViewHolder(CustomViewHolder viewHolder, int i) {
            viewHolder.noticeSubject.setText(participatingUsers.get(i).getFirstname() + " " + participatingUsers.get(i).getLastname());
        }

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

    };
    rvTransactions.setAdapter(transactionAdapter);
}

private class CustomViewHolder extends RecyclerView.ViewHolder {

    private TextView noticeSubject;
    private EditText userDebt,userCredit;

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

        noticeSubject = (TextView) itemView.findViewById(R.id.tvTransactionUser);
        userCredit = (EditText) findViewById(R.id.etTransactionPayed);
        userDebt = (EditText) findViewById(R.id.etTransactionOwes);
    }
}

participatingUsers 对象是一个用户列表。用户具有以下字段:

private int id;
private boolean isSelected;
private String firstname, lastname, email, password, api_key, creditcardnumber;

我希望能够为所有用户获取在编辑文本“已支付”和“欠款”中输入的值。

Answer 1

循环遍历 RecyclerView 的 childCount 并检查以确保您阅读的项目是 CustomViewHolder 类型，转换为该类型并读取 EditText 值。像这样的东西:

 public void printAllEditTextValues(){
     int childCount = rvTransactions.getChildCount(); 
     for(int i = 0; i < childCount; i++){
         if(rvTransactions.findViewHolderForLayoutPosition(i) instanceOf CustomViewHolder){
           CustomViewHolder childHolder = (CustomViewHolder) rvTransactions.findViewHolderForLayoutPosition(i);

           Log.d("EDIT_TEXT_1" , childHolder.userCredit.getText().toString());
           Log.d("EDIT_TEXT_2" , childHolder.userDebt.getText().toString());
         }
     }

您的适配器缺少用于编辑文本的 itemView.findViewById(int)，请使用:

private class CustomViewHolder extends RecyclerView.ViewHolder {

    private TextView noticeSubject;
    private EditText userDebt,userCredit;

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

        noticeSubject = (TextView) itemView.findViewById(R.id.tvTransactionUser);
        userCredit = (EditText) itemView.findViewById(R.id.etTransactionPayed);
        userDebt = (EditText) itemView.findViewById(R.id.etTransactionOwes);
    }
}