Create a new class MyView extends View. Override the onDraw(Canvas canvas) method to draw oval on Canvas.package com.AndroidMyCanvas;import android.content.Context;import android.graphics.Canvas;import android.graphics.Color;import android.graphics.Paint;import android.graphics.RectF;import android.util.AttributeSet;import android.view.View;public class MyView extends View { public MyView(Context context) { super(context); } public MyView(Context context, AttributeSet attrs) { super(context, attrs); } public MyView(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); } @Override protected void onDraw(Canvas canvas) { // TODO Auto-generated method stub super.onDraw(canvas); Paint paint = new Paint(); paint.setStyle(Paint.Style.STROKE); paint.setColor(Color.GRAY); RectF oval1 = new RectF(0, 0, getWidth(), getHeight()); canvas.drawOval(oval1, paint); paint.setStyle(Paint.Style.FILL); paint.setColor(Color.RED); RectF oval2 = new RectF(50, 50, 150, 150); canvas.drawOval(oval2, paint); paint.setColor(Color.BLUE); RectF oval3 = new RectF(250, 50, 350, 400); canvas.drawOval(oval3, paint); }}Modify main Java activity to setContentView() using our custom View, MyView.package com.AndroidMyCanvas;import android.app.Activity;import android.os.Bundle;public class AndroidMyCanvasActivity extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(new MyView(this)); }}

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