Right now I am working on Android application for AppSurfer. And while designing a prototype for the application, I had to integrate it with a splash screen. Segmentation is a well known issue for Android developers, and hence we have to be careful about the design components. They should not break on devices which are very large or very small. So I did a search and found following set of dimensions that should be used for splash screen which accommodates almost all screen sizes.

1. LDPI
   Portrait : 200x320px
   Landscape : 320x200px
2. MDPI
   Portrait : 320x480px
   Landscape : 480x320px
3. HDPI
   Portrait : 480x800px
   Landscape : 800x480px
4. XHDPI
   Portrait : 720px1280px
   Landscape : 1280x720px

Happy coding \m/