android - 从recyclerview的每一行获取数据

Question

我有一个 RecyclerView，它的每一行都有一个 EditText。行数在 50 到 60 之间。我从服务器获取行数。如何获取每个 EditText 的文本？这个 Action 会给我一个异常错误吗？

Answer 1

您可以在适配器和 View 持有者中实现此逻辑:

class YourAdapter extend RecyclerView.Adapter<YourAdapter.ViewHolder> {
     List<String> yourEditTextContents = ...;

     @Override
     public void onBindViewHolder(ViewHolder holder, int position) {
          holder.yourEditText.setTag(position);
          holder.yourEditText.setText(yourEditTextContents.get(position));
     }

     class ViewHolder extend RecyclerView.ViewHolder {
          EditText yourEditText;
          public ViewHolder(View root){
               ...
               yourEditText = root.findViewById();
               yourEditText.addTextChangedListener(new TextWatcher() {
                    @Override
                    public void beforeTextChanged(CharSequence s, int start, int count, int after) {

                    }

                    @Override
                    public void onTextChanged(CharSequence s, int start, int before, int count) {

                    }

                    @Override
                    public void afterTextChanged(Editable s) {
                        int position = (int)yourEditText.getTag();
                        yourEditTextContents.set(position, s.toString());
                    }
                });
          }
     }
}

之后，您可以使用以下方式获取编辑文本的文本:

yourEditTextContents.get(position)