Android - How to regenerate R class? [duplicate]

Answer 1

My problem was in Manifiest file. I have deleted launcher icons and did not reference the new ones on Manifiest :)

Answer 2

I had that problem and I just right-clicked on packet of my project and Build Project. Instantly the class R appeared in packet gen.

Answer 3

I reopen eclipse, edit one of my xml files and then discover that my activy class was refering android.R instead of my package "R" :-)

Answer 4

Try to add a new "Android XML file" to, for example, the /res/layout folder. This might cause the plugin to to regenerate the R class.

Answer 5

In case someone else finds this thread when Googling, like I did:

I had what appeared to be the same problem for a while, and after some digging I noticed that the R.java file got correctly built, but was ignored for only one of my source files. The problem for this particular file was that Eclipse had "helpfully" added the following line at the top:

import android.R;

That effectively hides the project R stuff. Just remove it and everything will be fine again...

Answer 6

I had the same problem - "R" missing. And none of the advices given here helped. Fortunately, I've found the reason - somehow Eclipse got lost the Project-Properties-target. It was unset. I don't know till now, what had done it, but setting it back helped. So, attention - missing R can mean the missing target, too!