FreeHandDrawing in Android - 2

package com.TestSurefaceView;

 

import java.util.Random;

import android.app.Activity;

import android.content.Context;

import android.graphics.Canvas;

import android.graphics.Color;

import android.graphics.Paint;

import android.graphics.Path;

import android.os.Bundle;

import android.view.MotionEvent;

import android.view.SurfaceHolder;

import android.view.SurfaceView;

 

 public class MainActivity extends Activity {

   

  MySurfaceView mySurfaceView;

   

  @Override

  public void onCreate(Bundle savedInstanceState) {

   super.onCreate(savedInstanceState);

   mySurfaceView = new MySurfaceView(this);

   setContentView(mySurfaceView);

  }

   

  class MySurfaceView extends SurfaceView{

 

   Path path;

    

   Thread thread = null;

   SurfaceHolder surfaceHolder;

   volatile boolean running = false;

    

   private Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);

   Random random;

    

   public MySurfaceView(Context context) {

    super(context);

    surfaceHolder = getHolder();

    paint.setStyle(Paint.Style.STROKE);

    paint.setStrokeWidth(3);

    paint.setColor(Color.WHITE);

   }

 

   @Override

   public boolean onTouchEvent(MotionEvent event) {

    if(event.getAction() == MotionEvent.ACTION_DOWN){

     path = new Path();

     path.moveTo(event.getX(), event.getY());

    }else if(event.getAction() == MotionEvent.ACTION_MOVE){

     path.lineTo(event.getX(), event.getY());

    }else if(event.getAction() == MotionEvent.ACTION_UP){

     path.lineTo(event.getX(), event.getY());

    }

     

    if(path != null){

     Canvas canvas = surfaceHolder.lockCanvas();

     canvas.drawPath(path, paint);

     surfaceHolder.unlockCanvasAndPost(canvas);

    }

 

    return true;

   }

  }

}