在RecyclerView中从子级获取值

Question

我有使用RecyclerView的活动。 RecyclerView行布局代码如下。在行布局中我有editTexts。当用户填写edittexts时，我想从RecyclerView中的这些edittext获取值。我无法得到正确的价值观。它看起来像适配器返回坏的值或我不知道问题在哪里。知道我做得不好吗？

<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:id="@+id/cv"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:clickable="true"
android:foreground="?android:attr/selectableItemBackground"
card_view:cardBackgroundColor="#fff"
card_view:cardCornerRadius="2dp"
card_view:cardElevation="2sp"
android:layout_marginBottom="6dp"
android:orientation="horizontal"
android:padding="10dp"
android:weightSum="5"
>

<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="horizontal"
    android:padding="10dp"
    android:weightSum="5">

    <TextView
        android:id="@+id/exercise_name"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_weight="3"
        android:gravity="center_vertical"
        android:layout_gravity="center_vertical"
        android:textColor="#ab000000"
        android:textSize="16sp" />

    <EditText
        android:id="@+id/et_repeats"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:inputType="number"
        android:gravity="center"
        android:layout_gravity="center"
        android:textColor="@color/float_label"
        android:textSize="18sp" />

    <EditText
        android:id="@+id/et_weight"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:gravity="center"
        android:layout_gravity="center"
        android:inputType="number"
        android:textColor="@color/float_label"
        android:textSize="18sp" />

</LinearLayout>

public class SeriesAdapter extends RecyclerView.Adapter<SeriesAdapter.ViewHolder> {

private ArrayList<Series> series = null;
private Context context = null;


public SeriesAdapter(ArrayList<Series> series, Context context) {
    this.series = series;
    this.context = context;

}

@Override
public SeriesAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.series_scr_row, parent, false);
    SeriesAdapter.ViewHolder viewHolder = new ViewHolder(view, new SeriesAdapter.ViewHolder.IMyViewHolderClicks() {
        @Override
        public void onRowClick(View caller, int position) {
            long id = series.get(position).idSeries;
            doAction(id);
        }
    }, new ViewHolder.IMyViewHolderClicksLong() {
        @Override
        public void onRowClickLong(View caller, int position) {
            long id = series.get(position).idSeries;
            doActionLong(id);
        }
    });

    return viewHolder;
}

@Override
public void onBindViewHolder(ViewHolder holder, int position) {
    holder.exercise_name.setText(++position + context.getResources().getString(R.string.series_label));
    holder.et_repeats.addTextChangedListener(new TextWatcher() {

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

        @Override
        public void beforeTextChanged(CharSequence s, int start, int count, int after) {
        }

        @Override
        public void afterTextChanged(Editable ss) {
        }
    });
}


@Override
public long getItemId(int position) {
    return series.get(position).idSeries;
}

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

private void doAction(long id) {
    HashMap<String, Object> hashMap = new HashMap<>();
    hashMap.put("id", id);
    startMyActivity(context, SeriesActivity.class, hashMap, false);
}

private void doActionLong(long id) {
}

public static class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener, View.OnLongClickListener {

    public TextView exercise_name;
    public EditText et_repeats;
    public EditText et_weight;
    public IMyViewHolderClicks mListener;
    public IMyViewHolderClicksLong mListenerLong;

    public ViewHolder(View itemLayoutView, IMyViewHolderClicks listener, IMyViewHolderClicksLong listenerLong) {
        super(itemLayoutView);
        mListener = listener;
        mListenerLong = listenerLong;
        exercise_name = (TextView) itemLayoutView.findViewById(R.id.exercise_name);
        et_repeats = (EditText) itemLayoutView.findViewById(R.id.et_repeats);
        et_weight = (EditText) itemLayoutView.findViewById(R.id.et_weight);
        itemLayoutView.setOnClickListener(this);
        itemLayoutView.setOnLongClickListener(this);
    }

    @Override
    public void onClick(View v) {
        mListener.onRowClick(v, getAdapterPosition());
    }

    @Override
    public boolean onLongClick(View v) {
        mListenerLong.onRowClickLong(v, getAdapterPosition());
        return true;
    }

    public interface IMyViewHolderClicks {
        public void onRowClick(View caller, int position);
    }

    public interface IMyViewHolderClicksLong {
        public void onRowClickLong(View caller, int position);
    }
}

}

在“活动”中，我尝试获取以下值：

            for (int i = 0; i < rv_series_list.getAdapter().getItemCount(); i++) {
            CardView cardView = (CardView) rv_series_list.getChildAt(i);
            LinearLayout linearLayout = (LinearLayout) cardView.getChildAt(0);

            EditText etWeight = (EditText)linearLayout.getChildAt(1);
            EditText etRepeat = (EditText)linearLayout.getChildAt(2);

            db.addRecord( new Records(-1,++i,
                    Integer.parseInt(etWeight.getText().toString()) ,
                    Integer.parseInt(etRepeat.getText().toString()), idOfExercise, -1));
        }