Storing and displaying image resources strategy

As we know it there are several screen layout out there on various android devices. Now, my question is, what's the best solution for displaying image on screen (full sized image) on that various device?

Should I (this is several strategy I have in mind right now):

• resize every images for that target device? (with the cost of resizing it and lost of quality on larger device)
• create several images for all or several common screen size? (with larger download size)
• cre开发者_开发百科ate core application and let them download images appropriate to that screen size (that means, I have to prepare hosting of those images)
• something I don't know yet...

So, if you guys have experience in this kind of situation, your recommendation is greatly appreciated.

Update: My application will have several (20-30) images.

This is documented ( http://developer.android.com/guide/practices/screens_support.html ) and answered quite a few times already I believe.

Create different images for the different screen resolution (store in drawable, drawable-hdpi... accordingly).

You can also define different layouts for different screen sizes (although to display full screen images, it does not sound like you need that).