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package it.sephiroth.android.demo;

import it.sephiroth.android.library.imagezoom.ImageViewTouch;

import java.io.IOException;

import android.app.Activity;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore.Images;
import android.view.Window;
import android.view.WindowManager;
import android.widget.Toast;

public class ImageZoomActivity extends Activity {
   
   private ImageViewTouch  mImageView;
   
   @Override
   protected void onCreate( Bundle savedInstanceState )
   {
      super.onCreate( savedInstanceState );
     
      requestWindowFeature( Window.FEATURE_NO_TITLE );
      setContentView( R.layout.main );
      getWindow().addFlags( WindowManager.LayoutParams.FLAG_FULLSCREEN );
      selectRandomImage();
   }
   
   @Override
   public void onContentChanged()
   {
      super.onContentChanged();
      mImageView = (ImageViewTouch)findViewById( R.id.imageView1 );
   }
   
   /**
    * pick a random image from your library
    * and display it
    */

   public void selectRandomImage()
   {
      Cursor c = getContentResolver().query( Images.Media.EXTERNAL_CONTENT_URI, null, null, null, null );
      if ( c != null ) {
         int count = c.getCount();
         int position = (int)( Math.random() * count );
         if ( c.moveToPosition( position ) ) {
            long id = c.getLong( c.getColumnIndex( Images.Media._ID ) );
            int orientation = c.getInt( c.getColumnIndex( Images.Media.ORIENTATION ) );
           
            Uri imageUri = Uri.parse( Images.Media.EXTERNAL_CONTENT_URI + "/" + id );
            Bitmap bitmap;
            try {
               bitmap = ImageLoader.loadFromUri( this, imageUri.toString(), 1024, 1024 );
               mImageView.setImageBitmapReset( bitmap, orientation, true );
            }
            catch ( IOException e ) {
               Toast.makeText( this, e.toString(), Toast.LENGTH_LONG ).show();
            }
         }
         c.close();
         c = null;
         return;
      }
   } 
}

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https://github.com/sephiroth74/ImageViewZoom

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