import android.app.Activity;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.os.Bundle;
import android.view.MotionEvent;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.Window;
import android.widget.ImageView;
public class MyMultitouchDemo extends Activity {
private static final int SCALEBASIC = 3 ;// 调整的比率
private int imageX = 0 ; // 计算图片的X轴
private int imageY = 0 ; // 计算图片的Y轴
private SurfaceHolder holder = null ;
private int screenWidth = 0 ;
private int screenHeight = 0 ;
private int imageWidth = 0 ;
private int imageHeight = 0 ;
private Bitmap bitmap = null ;
