Images in drawable folder is not recognized android

Issue

I have using many images in drawable folder , with no problem . But suddenly there was a problem with this drawable folder . I have put icon images for "Anniversary Wedding Stone" which was extracted from .pdf file . I am not able to use these images anyway

Cannot use in xml file as android:src="@drawable/"

Cannot use in Activity class as R.drawable

id is not generated in R.java

Please suggest

Solution

Thanks for all your effort..

I solved my problem . I always used to copy the images to drawable folder manually , but this time I copied the images through the project in eclipse, it worked..

Answered By - karthik