如何在Android的res文件夹中添加图像

Question

I am trying to add some images to res folder in my android 4.2.2 application. The problem is the project runs fine until whenever I do add, upon running it gives an error

R cannot be resolved to a variable

in the src/MainActiviy.java and the R.java file deletes it self from the gen folder.

Now I'm naming the folder drawable-mdp and every png image is also lower cased. But it doesn't seem to bother. Thanks!

Answer 1

You are getting this error because R.java failed to create. This happens when you try to a non-png image or the name of image contains some special character or characters in uppercase.

Answer 2

Ok guys I did try a few things and I finally got it. You can't use - hyphen while naming the image files themselves however _ underscore can be used. Note you always have to use drawable- while naming the folder can't use _ underscore