Cropping a wallpaper in order to have a crisp image

I am currently working 开发者_Python百科on a wallpaper application. Is there a way to make a bitmap look less blurry and more crisp once it is set as a wallpaper? Does it just require cropping the picture and resizing it to fit the size of the screen perfectly, or there is some other way?

P.S. I read that the application wallpaper set and save is able to deliver very good quality wallpapers once launched!

Where are you saving the bitmap? Try placing it in /res/raw as opposed to /res/drawable This prevents android from optimizing the image file, and should make it crisper.