How to get the Edit text position from Recycler View adapter using Text Watcher in android

Question

I want to know how to get position of Edit Text from Recycler View adapter.I used Card View with in that horizontal Linear Layout has three view TextView,EditText view and

Answer 1

In onBindViewHolder method of your Adapter, set tag for your EditText like this:

holder.editText.setTag(position);

And in your ViewHolder, add TextWatcher to your EditText

public static class ViewHolder extends RecyclerView.ViewHolder {

    EditText editText ;

    public ViewHolder(View itemView) {
        super(itemView);
        editText = itemView.findViewById(R.id.editText);
        MyTextWatcher textWatcher = new MyTextWatcher(editText);
        editText.addTextChangedListener(textWatcher);
    }
}

And here is your TextWatcher:

public class MyTextWatcher implements TextWatcher {
    private EditText editText;

    public MyTextWatcher(EditText editText) {
        this.editText = editText;
    }

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

    }

    @Override
    public void onTextChanged(CharSequence s, int start, int before, int count) {
        int position = (int) editText.getTag();
        // Do whatever you want with position
    }

    @Override
    public void afterTextChanged(Editable s) {

    }
}

NOTE: Make sure you call setTag method from your EditText before calling setText method, else it will throw NullPointerException. Or alternatively you can add null check when calling getTag method.

UPDATE 1

If your EditText already has another tag set, use ID to identify tags. e.g. when setting tag use this:

holder.editText.setTag(R.id.editText, position);

where R.id.editText is valid id of any of your resources (See documentation for details).

And also when getting value:

int position = (int) editText.getTag(R.id.editText);

Answer 2

Assume you use the following CustomViewHolder

public static class CustomViewHolder extends RecyclerView.ViewHolder {
    private TextView textView; 
    private TextView textView2;
    private EditText editText;
    private int position;
    public CustomViewHolder (View view) {
        super(view);
        textView = (TextView) view.findViewById(R.id.text_view);
        textView2 = (TextView) view.findViewById(R.id.text_view2);
        editText = (EditText) view.findViewById(R.id.edit_text);
        editText.addTextChangedListener(new CustomWatcher(this));
    }
}

and use the following CustomWatcher

public static class CustomWatcher implements TextWatcher {
    private int CustomViewHolder holder;
    public CustomWatcher(CustomViewHolder holder){
        this.holder = holder;
    }

    @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) {

    }

    public int getPosition(){
        return holder.position;
    }
}

Then, in your onBindViewHolder

@Override
public void onBindViewHolder(final CustomViewHolder holder, final int position) {
    holder.position = position;
}