Surfaceview

 package com.badlogic.androidgames;
    import android.app.Activity;
    import android.content.Context;
    import android.graphics.Canvas;
    import android.os.Bundle;
    import android.view.SurfaceHolder;
    import android.view.SurfaceView;
    import android.view.Window;
    import android.view.WindowManager;

    public class SurfaceViewTest extends Activity {

    FastRenderView renderView;
    public void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);
     requestWindowFeature(Window.FEATURE_NO_TITLE);
     getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
      WindowManager.LayoutParams.FLAG_FULLSCREEN);
      renderView = new FastRenderView(this);
      setContentView(renderView);

          }
      protected void onResume() {
         super.onResume();
         renderView.resume();
       }
        protected void onPause() {
        super.onPause();
         renderView.pause();
        }




     class FastRenderView extends SurfaceView implements Runnable,OnTouchListener {
     Thread renderThread = null;

    SurfaceHolder holder;
      Paint paint;
       int x=0;
       int y=0;

       volatile boolean running = false;

      public FastRenderView(Context context) {
     super(context);
       holder = getHolder();

        this.setOnTouchListener(this);
        }

       public void resume() {
        running = true;
         renderThread = new Thread(this);
        renderThread.start();
        }
        public void run() {
        while(running) {
        if(!holder.getSurface().isValid())
             continue;
          Canvas canvas = holder.lockCanvas();
           paint= new Paint();

        paint.setStyle(Paint.Style.STROKE);
       paint.setStrokeWidth(1);
       paint.setColor(Color.MAGENTA);
       paint.setTextSize(30);
      canvas.drawText(""+x+","+y, 75, 75, paint);
     holder.unlockCanvasAndPost(canvas);
          }
        }


        onTouch(View v, MotionEvent event)
        {

        x=event.getX();
      y=event.getY();

       }

        public void pause() {
        running = false;
         while(true) {
        try {
          renderThread.join();
          } catch (InterruptedException e) {
        // retry
                }
              }
               }
            }
          }