gistfile1.java

package com.chovanec.runo;

import android.app.Activity;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.os.Bundle;
import android.view.MotionEvent;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.SurfaceHolder.Callback;
import android.widget.LinearLayout;

public class MainActivity extends Activity {
        
  @Override
	protected void onCreate(Bundle savedInstanceState)
	{
		super.onCreate(savedInstanceState);
		LinearLayout lLayout = new LinearLayout(getApplicationContext());
		MyDraw mydraw = new MyDraw(getApplicationContext());
		lLayout.addView(mydraw);
		setContentView(lLayout);
	}
	
	class MyDraw extends SurfaceView implements Callback {
		
		private MyThread myThread;
		private Bitmap bmp;
		private SurfaceHolder holder;
		private Paint paint;
		
		public MyDraw(Context context)
		{
			super(context);
			holder = getHolder();
			holder.addCallback(this);
			paint = new Paint();            
			bmp = BitmapFactory.decodeResource(getResources(), R.drawable.ic_launcher);
		}

		public void surfaceChanged(SurfaceHolder holder, int format, int width, int height)
		{
			//
		}
                
		public void surfaceCreated(SurfaceHolder holder)
		{
			myThread = new MyThread(holder, this);
			myThread.setFlag(true);
			myThread.start();
		}

		public void surfaceDestroyed(SurfaceHolder holder)
		{
			//
		}
        
		@Override
		public boolean onTouchEvent(MotionEvent event)
		{
			if(event.getAction() == MotionEvent.ACTION_DOWN)
			{
				
			}
			return true;
		}

		@Override
		protected void onDraw(Canvas canvas)
		{
			canvas.drawColor(0xFF0088FF);
			
			super.onDraw(canvas);
			
			for (int i = 0; i < 200; i++)
			canvas.drawBitmap(bmp, (float) Math.random()*canvas.getWidth(), (float) Math.random()*canvas.getHeight(), paint);

		}
	}
	
	class MyThread extends Thread {
		
		boolean flag ;
		SurfaceHolder myHolder;
		MyDraw myDraw;
		
		public MyThread (SurfaceHolder holder , MyDraw drawMain)
		{
			myHolder = holder;
			myDraw = drawMain;
		}
		
		public void setFlag (boolean myFlag)
		{
			flag = myFlag;
		}
		
		public void run()
		{
			Canvas canvas = null;
			while (flag)
			{
				try {
					canvas = myHolder.lockCanvas(null);
					myDraw.onDraw(canvas);
				}
				finally {
					if (canvas != null)
					{
						myHolder.unlockCanvasAndPost(canvas);
					}
				}
			}
		}
	}
}