Create user friendly application that show different shapes like circle, square, rectangle, round rectangle, arc, oval in listview and on selecting draw that shape using ShapeDrawable class

Set7Activity.java

package ps.set7;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.ListView;

public class Set7Activity extends Activity implements OnItemClickListener 
{
 /**
     * www.master-gtu.blogspot.com
     * pankaj sharma (8460479175)
     * vijay chavda  (8460420769) 
     */
 String flags[]={"circle","square","rectangle","round rect","arc","oval"};
 ListView lv;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
        lv=(ListView) findViewById(R.id.listView1);
        
        ArrayAdapter<String>aa=new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1,flags);
        lv.setAdapter(aa);
        lv.setOnItemClickListener(this);
    }
 @Override
 public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) 
 {
  Intent i=new Intent(this, screen.class);
  i.putExtra("id", arg2);
  startActivity(i);
 }
}

screen.java

package ps.set7;

import android.app.Activity;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.RectF;
import android.graphics.drawable.ShapeDrawable;
import android.graphics.drawable.shapes.Shape;
import android.os.Bundle;
import android.view.View;

public class screen extends Activity 
{
 /**
     * www.master-gtu.blogspot.com
     * pankaj sharma (8460479175)
     * vijay chavda  (8460420769) 
     */
 @Override
 protected void onCreate(Bundle savedInstanceState) {
  // TODO Auto-generated method stub
  super.onCreate(savedInstanceState);
  setContentView(new screen1(this,getIntent().getIntExtra("id", 0)));
 }
 private class screen1 extends View
 {
  int shape=0;
  public screen1(Context context, int id) {
   super(context);
   shape=id;
  }
  @Override
  protected void onDraw(Canvas canvas) {
   // TODO Auto-generated method stub
   super.onDraw(canvas);
   Shape s=new Shape() {
    
    @Override
    public void draw(Canvas c, Paint paint) 
    {
     paint.setColor(Color.RED);
     if(shape==0)
     {
      c.drawCircle(100, 100, 50, paint);
     }
     else if(shape==1)
     {
      c.drawRect(100, 100, 200, 200,paint);
     }
     else if(shape==2)
     {
      c.drawRect(100, 100, 150, 200, paint);
     }
     else if(shape==3)
     {
      RectF rect=new RectF(100, 100, 150, 200);
      c.drawRoundRect(rect, 5, 5, paint);
     }
     else if(shape==4)
     {
      RectF rect=new RectF(100, 100, 150, 200);
      c.drawArc(rect, 0, 150, true, paint);
     }
     else if(shape==5)
     {
      RectF rect=new RectF(100, 100, 150, 200);
      c.drawOval(rect,paint);
     }
    }
   };
   
   ShapeDrawable obj=new ShapeDrawable();
   obj.setShape(s);
   obj.draw(canvas);
  }
 }
}