Android ImageView loaded from the Web

WebImageView.java

import java.io.InputStream;
import java.net.URL;

import android.content.Context;
import android.graphics.drawable.Drawable;
import android.os.AsyncTask;
import android.util.AttributeSet;
import android.widget.ImageView;

public class WebImageView extends ImageView {

	public WebImageView(Context context, AttributeSet attrs, int defStyle) {
		super(context, attrs, defStyle);
	}

	public WebImageView(Context context, AttributeSet attrs) {
		super(context, attrs);
	}

	public WebImageView(Context context) {
		super(context);
	}

	private DownloadImageTask task;

	public void setUrl(String url) {
		synchronized (this) {
			if (task != null)
				task.cancel(true);

			task = (new DownloadImageTask());
			task.execute(url);
		}
	}

	private class DownloadImageTask extends
	AsyncTask<String, Integer, Drawable> {
		private Drawable loadImageFromNetwork(String url) {
			try {
				InputStream is = (InputStream) new URL(url).getContent();
				Drawable d = Drawable.createFromStream(is, "src name");
				return d;
			} catch (Exception e) {
				System.out.println("Exc=" + e);
				return null;
			}
		}

		protected Drawable doInBackground(String... urls) {
			return loadImageFromNetwork(urls[0]);
		}

		protected void onPostExecute(Drawable result) {
			setImageDrawable(result);
		}
	}

}