Lazy ImageLoder in Android

1) write a following code in your .java file

 Const.java
    public static boolean isLoadImage;

ImageList.java

public class ImageList extends Activity
{

       private ImageLoader imageLoader;
       private static Activity _Caller;

       int imageLoderMode = 1;


@Override
protected void onCreate(Bundle savedInstanceState)
{


            _Caller=this;
            Constants.isLoadImage = true;
            loadimage = new LoadThumbnail(ImageView(ex img), imageLoderMode);
            loadimage.execute(int idof image(ex.photoID));


             if(imageLoderMode == 3)
        imageLoderMode = 0;

       imageLoderMode++;
         }
}



//=====================ImageLoder======================================



public class LoadThumbnail extends AsyncTask<String, String, Bitmap>
{
public ImageView image;
private int Mode;
private LoadThumbnail(final ImageView image, int mode)
{
this.image = image;
this.Mode = mode;
}

protected void onPreExecute()
{
}

protected Bitmap doInBackground(String... param)
{
Bitmap viewBitmap = null;
try
{
if(!Constants.isLoadImage)
return null;


try{
if(Mode == 1)
viewBitmap = getThumbnail_1(param[0]);
else if(Mode == 2)
viewBitmap = getThumbnail_2(param[0]);
else if(Mode == 3)
viewBitmap = getThumbnail_3(param[0]);
} catch (Exception e) {
// Log.error(this.getClass() + " getThumbnail :: ", e);
viewBitmap = null;
}


}
catch (OutOfMemoryError e)
{
viewBitmap = null;
}
catch (Exception e)
{
//Log.error(this.getClass() + " LoadThumbnail :: ", e);
viewBitmap = null;
}
return viewBitmap;
}

protected void onPostExecute(Bitmap bitmap)
{
if (bitmap != null)
{
this.image.setImageBitmap(bitmap);
}
}
}


public static synchronized Bitmap getThumbnail_1(String thumName)
{
return new Utils().getThumbnailMain(_Caller, thumName);



public static synchronized Bitmap getThumbnail_2(String thumName)
{
return new Utils().getThumbnailMain(_Caller, thumName);
}

public static synchronized Bitmap getThumbnail_3(String thumName)
{
return new Utils().getThumbnailMain(_Caller, thumName);
}