How to get data from Edit Text in a RecyclerView?

Question

I have recyclerview with edit text. Each row has a edit text. I am entering values in the edit text manually and after i enter values, I want to get those values in each and every row. I want to get those values to the main activity. There may be 10 to 20 rows in the recyclerview. I want to get all values in those edit texts.

This is my Adapter

public class SelectItemAdapter extends RecyclerView.Adapter<SelectItemAdapter.ItemHolder> {

    private List<String> itemsName, itemsQty, itemsPCode, itemPlant;
    private OnItemClickListener onItemClickListener;
    private LayoutInflater layoutInflater;

    public SelectItemAdapter(Context context, String[] mDataset) {
        layoutInflater = LayoutInflater.from(context);
        itemsName = new ArrayList<String>();
        itemsQty = new ArrayList<String>();
        itemsPCode = new ArrayList<String>();
        itemPlant = new ArrayList<String>();
        this.mDataset = mDataset;


    }


    @Override
    public SelectItemAdapter.ItemHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View itemView = layoutInflater.inflate(R.layout.custom_row_selected_item, parent, false);
        return new ItemHolder(itemView, this);
    }

    @Override
    public void onBindViewHolder(SelectItemAdapter.ItemHolder holder, final int position) {
        holder.setItemName(itemsName.get(position));
        holder.setItemQty(itemsQty.get(position));
        holder.setItemPCode(itemsPCode.get(position));
        holder.setItemPlant(itemPlant.get(position));

    }

    @Override
    public int getItemViewType(int position) {
        return position;
    }


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

    public Object getItemName(int position) {
        return itemsName.get(position);
    }

    public Object getItemPCode(int position) {
        return itemsPCode.get(position);
    }

    public Object getItemPlant(int position) {
        return itemPlant.get(position);
    }


    public void setOnItemClickListener(OnItemClickListener listener) {
        onItemClickListener = listener;
    }

    public OnItemClickListener getOnItemClickListener() {
        return onItemClickListener;
    }


    public interface OnItemClickListener {
        public void onItemClick(ItemHolder item, int position);
    }

    public void add(int location, String iName, String iQty, String iPCode, String iPlant) {
        itemsName.add(location, iName);
        itemsQty.add(location, iQty);
        itemsPCode.add(location, iPCode);
        itemPlant.add(location, iPlant);
        notifyItemInserted(location);
    }

    public void remove(int location) {
        if (location >= itemsName.size())
            return;

        itemsName.remove(location);
        notifyItemRemoved(location);
    }

    public static class ItemHolder extends RecyclerView.ViewHolder implements View.OnClickListener {

        private SelectItemAdapter parent;
        TextView textItemName, txtPCode, txtAvailableQty, txtTempQty, txtPlant;
        Button bRemove;
        EditText numPicker;

        public ItemHolder(View itemView, SelectItemAdapter parent) {
            super(itemView);
            this.parent = parent;
            textItemName = (TextView) itemView.findViewById(R.id.txtProductName);
            txtAvailableQty = (TextView) itemView.findViewById(R.id.txtAvailbleQty);
            txtPCode = (TextView) itemView.findViewById(R.id.txtPCode);
            txtPlant = (TextView) itemView.findViewById(R.id.txtPlant);
            bRemove = (Button) itemView.findViewById(R.id.bRemove);
            numPicker = (EditText) itemView.findViewById(R.id.numberPicker);
            bRemove.setOnClickListener(this);
        }

        public void setItemName(CharSequence name) {
            textItemName.setText(name);
        }

        public void setItemQty(CharSequence name) {
            txtAvailableQty.setText(name);
        }

        public void setItemPCode(CharSequence name) {
            txtPCode.setText(name);
        }

        public void setItemPlant(CharSequence name) {
            txtPlant.setText(name);
        }

        public String getQtyNumber() {
            return numPicker.getText().toString();
        }

        public CharSequence getItemName() {
            return textItemName.getText();
        }


        public CharSequence getItemPCode() {
            return txtPCode.getText();
        }

        @Override
        public void onClick(View v) {
            final OnItemClickListener listener = parent.getOnItemClickListener();
            if (listener != null) {
                listener.onItemClick(this, getPosition());
            }
        }
    }

}

This is how i tried to get values. But it is not working

private String getNumPicNumber(int i) {
        if (myRecyclerView.findViewHolderForLayoutPosition(i) instanceof SelectItemAdapter.ItemHolder) {
            SelectItemAdapter.ItemHolder childHolder = (SelectItemAdapter.ItemHolder) myRecyclerView.findViewHolderForLayoutPosition(i);
            numberPickerNumber = childHolder.getQtyNumber();
        }
        return numberPickerNumber;
    }

Solution 1

You don't need to use so many lists, just create a class that will contain all the data of single item, there is no need for buttons, use just text change listener instead.

sample code

public class RetItem
{
    public String _itemName;
    public String _itemQty;
    public String _itemPcode;
    public String _itemPlant;
}

public class SelectItemAdapter extends RecyclerView.Adapter<SelectItemAdapter.ItemHolder> {

    private List<RetItem> _retData;
     public SelectItemAdapter(Context context, String[] mDataset) {
        layoutInflater = LayoutInflater.from(context);
        _retData = new ArrayList<RetItem>(mDataset.length);
        this.mDataset = mDataset;
    }

      @Override
    public void onBindViewHolder(SelectItemAdapter.ItemHolder holder, final int position) {
        holder.setItemName(itemsName.get(position));
        holder.setItemName.addTextChangedListener(new TextWatcher() {

           public void afterTextChanged(Editable s) {}

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

           public void onTextChanged(CharSequence s, int start, int before, int count) {
             _retData.get(position)._itemName = s.toString();
           }
          });

        holder.setItemQty(itemsQty.get(position));
        holder.setItemQty.addTextChangedListener(new TextWatcher() {

           public void afterTextChanged(Editable s) {}

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

           public void onTextChanged(CharSequence s, int start, int before, int count) {
             _retData.get(position)._itemQty = s.toString();
           }
          });

        holder.setItemPCode(itemsPCode.get(position));
        holder.setItemPCode.addTextChangedListener(new TextWatcher() {

           public void afterTextChanged(Editable s) {}

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

           public void onTextChanged(CharSequence s, int start, int before, int count) {
             _retData.get(position)._itemPcode = s.toString();
           }
          });       
        holder.setItemPlant(itemPlant.get(position));
        holder.setItemPlant.addTextChangedListener(new TextWatcher() {

           public void afterTextChanged(Editable s) {}

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

           public void onTextChanged(CharSequence s, int start, int before, int count) {
             _retData.get(position)._itemPlant = s.toString();
           }
          });
    }

    public List<RetItem> retrieveData()
    {
        return _retData;
    }
}

Solution 2

To do this there are two ways:-

1) Add save Button in each row of RecyclerView on this Button click (onClick)

 @Override
        public void onClick(View v) {
           String ans = holher.numPicker.getText().toString();
           // save ans to sharedpreferences or Database
        }

2) Add onTextChangedListener to EditText

holher.mumPicker.addTextChangedListener(new TextWatcher() {

   public void afterTextChanged(Editable s) {}

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

   public void onTextChanged(CharSequence s, int start,
     int before, int count) {
      String ans = holher.numPicker.getText().toString();
           // save ans to sharedpreferences or Database
   }
  });

Then in your MainActivity.java retrive data from sharedpreferences or database

Comments

[visionix visionix]

while using addTextChangedListener on each of the editTexts, the text will be in s CharSequence, this text will be saved in _retData structure as you can see. when you want to get the data from the adapter just call retrieveData function

[D.Madu]

no they are not edit text. Those you put addTextChangedListener, they are text view. **numPicker ** is the edit text.

[visionix visionix]

so instead of holder.setItemQty.addTextChangedListener just do holder.numPicker.addTextChangedListener

[D.Madu]

thank you for the response. this helped me to go for a solution. so i accept this answer

[Eldho Paul Konnanal]

Thank you ,but for this to work we have to make few changes . _retData = new ArrayList<RetItem>(mDataset.length); // this doesnt initialse the retData array with an initial size , It only sets a maximum size for the array. An this will give an array index out of bounds exception So this is what we have to do _retData = new ArrayList<RetItem>(mData.size()); for (int i =0;i<mData.size();++i){ _retData.add(new RetItem("","")); }