Example of drawing on View

package com.exercise.AndroidDraw;



import android.app.Activity;

import android.content.Context;

import android.graphics.Canvas;

import android.graphics.Color;

import android.graphics.Paint;

import android.os.Bundle;

import android.view.View;



public class AndroidDrawActivity extends Activity {



	/** Called when the activity is first created. */

  @Override

  public void onCreate(Bundle savedInstanceState) {

      super.onCreate(savedInstanceState);

      setContentView(new MyView(this));

  }



  public class MyView extends View {



		public MyView(Context context) {

			super(context);

			// TODO Auto-generated constructor stub

		}



		@Override

		protected void onDraw(Canvas canvas) {

			// TODO Auto-generated method stub

			super.onDraw(canvas);

			

			int width = getWidth();

			int height = getHeight();

			int radius;

			

			if (width > height){

				radius = height/2;

			}else{

				radius = width/2;

			}

			

			Paint paint = new Paint();

			paint.setStyle(Paint.Style.FILL);

			

			paint.setColor(Color.RED);

			canvas.drawPaint(paint);

			paint.setColor(Color.BLUE);

			canvas.drawCircle(width/2, height/2, radius, paint);

		}



	}

}

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