Which size should a background be for ldpi, mdpi, hdpi and xhdpi screens?
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The designer has given me a background to include in my application. It has a lot of detail in it, so when trying to create a 9-patch image, it got blurry.

So, deciding to have a background to all major screen densities in Android devices, what should be exactly the background image size? 

For example:

 - ldpi - 200 x 200
 - mdpi - 300 x 300
 - hdpi - 400 x 400

Is there any standard I should follow?

Many thanks,

Felipe