Remove View dynamically using Java code

package com.example.androidinsertimages;

import android.os.Bundle;
import android.app.Activity;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.LinearLayout;

public class MainActivity extends Activity {
 
 Button addinHorizontalScrollView, addinScrollView;
 LinearLayout inHorizontalScrollView, inScrollView;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        inHorizontalScrollView = (LinearLayout)findViewById(R.id.inhorizontalscrollview);
        inScrollView = (LinearLayout)findViewById(R.id.inscrollview);
        
        addinHorizontalScrollView = (Button)findViewById(R.id.addinhorizontalscrollview);
        addinHorizontalScrollView.setOnClickListener(new OnClickListener(){

   @Override
   public void onClick(View arg0) {
    addImageView(inHorizontalScrollView);
   }});
        
        addinScrollView = (Button)findViewById(R.id.addinscrollview);
        addinScrollView.setOnClickListener(new OnClickListener(){

   @Override
   public void onClick(View arg0) {
    addImageView(inScrollView);
   }});
        
    }
    
    private void addImageView(LinearLayout layout){
     ImageView imageView = new ImageView(this);
     imageView.setImageResource(R.drawable.ic_launcher);
     layout.addView(imageView);
     
     imageView.setOnClickListener(viewOnClickListener);
    }

    OnClickListener viewOnClickListener
    = new OnClickListener(){

  @Override
  public void onClick(View v) {
   ViewGroup parent = (ViewGroup)v.getParent();
   parent.removeView(v);
  }
    };
}