Android : how to update the dynamic created textview backgroud using getTag()

I have created a textView dynamically based on number of fields getting from server. below textview i have one hidden view, on click of that specific textview , wants to show the view.

below is code, but not able to show/hide specific view.

private void addChilds(String value) {


    final LinearLayout addChildsLayout = new LinearLayout(this);
    addChildsLayout.setOrientation(LinearLayout.VERTICAL);
    addChildsLayout.setId(15);

    // Defining the RelativeLayout layout parameters.
    // In this case I want to fill its parent
    LinearLayout.LayoutParams addChildsLayoutLp = new LinearLayout.LayoutParams(
            LinearLayout.LayoutParams.MATCH_PARENT,
            LinearLayout.LayoutParams.WRAP_CONTENT);

    addChildsLayout.setLayoutParams(addChildsLayoutLp);

    // Creating a new TextView
    final TextView tv = new TextView(this);
    tv.setText(value);
    tv.setTextSize(20);
    tv.setTextColor(Color.parseColor("#000000"));
    tv.setPadding(40, 40, 40, 40);
    tv.setTag(value);

    // Defining the layout parameters of the TextView
    RelativeLayout.LayoutParams lp = new RelativeLayout.LayoutParams(
            RelativeLayout.LayoutParams.WRAP_CONTENT,
            RelativeLayout.LayoutParams.WRAP_CONTENT);
    lp.addRule(RelativeLayout.CENTER_IN_PARENT);

    // Setting the parameters on the TextView
    tv.setLayoutParams(lp);

    tappedView = new View(this);
    tappedView.setBackgroundColor(Color.parseColor("#8461A9"));
    tappedView.setVisibility(View.GONE);
    tappedView.setTag(value);

    // Defining the RelativeLayout layout parameters.
    // In this case I want to fill its parent
    LinearLayout.LayoutParams tappedViewParams = new LinearLayout.LayoutParams(
            LinearLayout.LayoutParams.MATCH_PARENT, 10);

    tappedView.setLayoutParams(tappedViewParams);

    tv.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {
            // need to show tapped view which is just below the selected textview
             v = (View) v.getTag();
             tappedView.setVisibility(View.VISIBLE);
        }
    });

    // Adding the TextView to the RelativeLayout as a child
    addChildsLayout.addView(tv);
    addChildsLayout.addView(tappedView);
    innerLayout.addView(addChildsLayout);

}

Thanks in advance.