在 RecyclerView 中使用 EditText 滚动后数据消失

public class MyAdapter extends RecyclerView.Adapter {

private String[] mDataset;

public MyAdapter(String[] myDataset) {
    mDataset = myDataset;
}

@Override
public MyAdapter.ViewHolder onCreateViewHolder(ViewGroup parent,
                                               int viewType) {
    View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.list_item_edittext, parent, false);
    // pass MyCustomEditTextListener to viewholder in onCreateViewHolder
    // so that we don't have to do this expensive allocation in onBindViewHolder
    ViewHolder vh = new ViewHolder(v, new MyCustomEditTextListener());

    return vh;
}

@Override
public void onBindViewHolder(ViewHolder holder, final int position) {
    // update MyCustomEditTextListener every time we bind a new item
    // so that it knows what item in mDataset to update
    holder.myCustomEditTextListener.updatePosition(holder.getAdapterPosition());
    holder.mEditText.setText(mDataset[holder.getAdapterPosition()]);
}

@Override
public int getItemCount() {
    return mDataset.length;
}


public static class ViewHolder extends RecyclerView.ViewHolder {
    // each data item is just a string in this case
    public EditText mEditText;
    public MyCustomEditTextListener myCustomEditTextListener;

    public ViewHolder(View v, MyCustomEditTextListener myCustomEditTextListener) {
        super(v);

        this.mEditText = (EditText) v.findViewById(R.id.editText);
        this.myCustomEditTextListener = myCustomEditTextListener;
        this.mEditText.addTextChangedListener(myCustomEditTextListener);
    }
}

// we make TextWatcher to be aware of the position it currently works with
// this way, once a new item is attached in onBindViewHolder, it will
// update current position MyCustomEditTextListener, reference to which is kept by ViewHolder
private class MyCustomEditTextListener implements TextWatcher {
    private int position;

    public void updatePosition(int position) {
        this.position = position;
    }

    @Override
    public void beforeTextChanged(CharSequence charSequence, int i, int i2, int i3) {
        // no op
    }

    @Override
    public void onTextChanged(CharSequence charSequence, int i, int i2, int i3) {
        mDataset[position] = charSequence.toString();
    }

    @Override
    public void afterTextChanged(Editable editable) {
        // no op
    }
}

}

记录一下，引用别人的方法网址：stackoverflow.com/questions/3…