Application for multiple screen sizes

Question

In my application i have used some custom buttons/icon,i have all images in the folder drawable-hdpi and this line in the AndroidManifest.xml file :

 <supports-screens  
  android:smallScreens="true"
  android:normalScreens="true"  
  android:largeScreens="true"
  android:anyDensity="true"/> 

My application is looking good in HTC desire(480x800) and HTC wildfire (320x400) without putting any image in drawable-mdpi/ldpi folder.

I want to know that, is it necessary to keep images in drawable-mdpi/ldpi or it will also look good on different devices.

Answer 1

For -optimal- results you should have the 3 versions of the images/icons {hdpi, mdpi, ldpi} but it's not mandatory.