Android to achieve the zoom image flip function

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package com.easyway.andorid.hello;

import android.os.Bundle;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.ImageView.ScaleType;
import android.widget.LinearLayout.LayoutParams;

 * Android The zoom feature implemented pictures  
 * @author longgangbai
 * @date 2010-5-24
 * @version 1.0
 * @since JDK6.0
public class ImageViewAndorid extends Activity {
    /** Called when the activity is first created. */
    public void onCreate(Bundle savedInstanceState) {
         // The Setup program's title  
         setTitle(" Scale and rotate pictures  ");
         // Instantiate an object of class LinearLayout  lly
         LinearLayout lly=new LinearLayout(this);
         // Gets a picture of the information here is  icon.png , The location of the pictures stored in the res/drawable under  ,
         // At the same time here also has a itfunz.bmp, this is the application's icon  
         Bitmap bmpOrg=BitmapFactory.decodeResource(getResources(), R.drawable.icon);
         // Gets the size of the original picture  
         int width=bmpOrg.getWidth();
         int height=bmpOrg.getHeight();
         int newWidth=400;
         int newheight=400;
         // Define the height and width of the scaled to the size of the  
         float sw=((float)newWidth)/width;
         float sh=((float)newheight)/height;
         // Create a picture of the matrix object  
         Matrix matrix=new Matrix();
         // Zoom pictures of action  
         // Rotation  30*
         Bitmap resizeBitmap=Bitmap.createBitmap(bmpOrg,0,0,width,height,matrix,true);
         // Create a new picture   
         BitmapDrawable bmp=new BitmapDrawable(resizeBitmap);
         // Create a Bitmap converted to  Drawable Object, so that it can be used in  ImageView And ImageButton in  
         ImageView imageView=new ImageView(this);
         // Create ImageView object  
         // The picture in the Middle  
         // The picture fills the entire view  
         lly.addView(imageView, new LinearLayout.LayoutParams(LayoutParams.FILL_PARENT,LayoutParams.FILL_PARENT));
         // Add to the layout template ImageView  
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