View difference between Paste ID: Dgj3gLKC and MHcyPwMD

 package com.example;
 
 import java.util.Random;
 
 import android.app.Activity;
 import android.content.Context;
 import android.graphics.Bitmap;
 import android.graphics.Canvas;
 import android.graphics.Color;
 import android.graphics.Paint;
 import android.os.Bundle;
 import android.os.Handler;
 import android.os.Message;
 import android.util.AttributeSet;
 import android.util.Log;
 import android.view.View;
 
 public class Test1 extends Activity {
     /** Called when the activity is first created. */
 	private Handler mHandler;
 	private DrawView draw;
 	private boolean running;
 
     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         draw = new DrawView(this, null);
         mHandler = new Handler(new Handler.Callback() {
 			@Override
 			public boolean handleMessage(Message msg) {
 				Log.v("tag", "add random point in 500 ms");
 				draw.addRandomPoint();
 				if (running)
 					mHandler.sendMessageDelayed(new Message(), 500);
 				return true;
 			}
 		});
         setContentView(draw);
     }
 
     @Override
     public void onResume() {
     	super.onResume();
     	running = true;
     	mHandler.sendMessage(new Message());
     }
 
     @Override
     public void onPause() {
     	super.onPause();
     	running = false;
     }
 
     public class DrawView extends View {
         public static final String TAG = "DrawView";
         Paint paint = new Paint();
         Bitmap cache;
 
         public DrawView(Context context, AttributeSet attrs) {
             super(context, attrs);
             paint.setStyle(Paint.Style.FILL_AND_STROKE);
             paint.setColor(Color.WHITE);
             paint.setAntiAlias(true);
 
         }
 
     	@Override
         public void onDraw(Canvas canvas) {
     		if (cache != null)
     			canvas.drawBitmap(cache, 0, 0, paint);
         }
 
     	Random random = new Random();
     	private final int[] RAINBOW =  {Color.RED, Color.YELLOW, Color.BLUE, Color.GREEN,
     			Color.parseColor("#FF7F00"), //orange
     			Color.parseColor("#00ffff"),//azure
     			Color.parseColor("#8b00ff") //purple
     	};
 
     	public void addRandomPoint() {
     		int w = getWidth();
     		int h = getHeight();
     		if (w == 0 || h == 0)
     			return;
 
     		Point point = new Point(
     				random.nextFloat() * getWidth(),
     				random.nextFloat() * getHeight(),
     				random.nextFloat() * 30,
     				RAINBOW[random.nextInt(RAINBOW.length)]);
 
     		if (cache == null) {
     			cache = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888);
     		}
 
     		Canvas canvas = new Canvas(cache);
     		paint.setColor(point.color);
     		paint.setStyle((random.nextFloat()> 0.5) ? Paint.Style.STROKE : Paint.Style.FILL_AND_STROKE);
     		paint.setStrokeWidth(point.radius / 5);
     		canvas.drawCircle(point.x, point.y, point.radius, paint);
     		postInvalidate();
     	}
     }
 
     class Point {
     	Point(float x, float y, float radius, int color) {
     		this.x = x;
     		this.y = y;
     		this.radius = radius;
     		this.color = color;
     	}
 
         float x, y, radius;
         int color;
     }
 }