How To download an image and save to the memory card

/First create a new URL object 
URL url = new URL("http://www.google.co.uk/logos/holiday09_2.gif")
//Next create a file, the example below will save to the SDCARD using JPEG

// format
File file = new File("/sdcard/example.jpg");
//Next create a Bitmap object and download the image to bitmap
Bitmap bitmap = BitmapFactory.decodeStream(url.openStream());
//Finally compress the bitmap, saving to the file previously created
bitmap.compress(CompressFormat.JPEG, 100, new FileOutputStream(file));

Don't forget to add the Internet permission to your manifest:
 android:name="android.permission.INTERNET" />

Mohammad Abu Hmead