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Android Build a Simple Android App (2014) Basic Android Programming Accessing Views in Code

Erik Russell
Erik Russell
1,032 Points
Posted by Erik Russell
Erik Russell
1,032 Points

Cannot locate R file

So far the lesson is going great. I am having one issue however, I cannot locate the R file as I have an updated version of Android Studio. The build folder is missing along with all other files and folders inside of it.

Could somebody please advise on where to locate the R file. Thanks.

6 Answers

Steve Hunter
Steve Hunter
57,712 Points

Ah, right - sorry I was on the wrong track.

The files are still there, but the newer versions of Android Studio organise them differently than in that video.

On the top, left above your files listing, there is a drop-down that is probably set to show the Android robot icon with the word Android next to it. Click the drop down and change it to Project and you'll get the full path from app such as app/build/generated/res/rs/ etc.

Switch to Packages, and the R files is shown under the android.support package, if you're using that.

Hope that makes sense now!

Steve.

Erik Russell
Erik Russell
1,032 Points
Erik Russell
Erik Russell
1,032 Points

Thanks again Steve! Can't wait to get home from work and get back to learning.

Steve Hunter
Steve Hunter
57,712 Points
Steve Hunter
Steve Hunter
57,712 Points

That is auto-generated. Try a "Invalidate Caches and Restart" - that usually fixes stuff like that.

If that doesn't work do let me know and we can think again!

Steve.

Steve Hunter
Steve Hunter
57,712 Points

Are you getting "R cannot be resolved into a variable"?

I'm doing a bit of digging - a screenshot of you error would help, possibly.

Steve.

James Simshaw
James Simshaw
28,738 Points
James Simshaw
James Simshaw
28,738 Points

Have you tried cleaning and then building the project?

Steve Hunter
Steve Hunter
57,712 Points
Steve Hunter
Steve Hunter
57,712 Points

There are some useful pointers in this Stack Overflow post.

Your solution is likely to be in there somewhere.

The R.java is created by the compiler; you never (as far as I'm aware) change any code in it. We reference it when accessing application resources, menus and layouts.

If you've got this auto-generated stuff missing, which is odd, try a rebuild, or a make or a clean - try it all!

Erik Russell
Erik Russell
1,032 Points
Erik Russell
Erik Russell
1,032 Points

I think either you are misunderstanding me or I am completely lost (more likely the latter) but there is a "build" folder shown in the video. I do not have said folder. Inside of that directory is the r file a ways down.

billwerba
billwerba
8,283 Points
billwerba
billwerba
8,283 Points

Having the Same Problem,

Try doing this tutorial with the latest android studio, the whole directory structure is different so things are harder to find or are not there anymore.

Steve Hunter
Steve Hunter
57,712 Points

Yeah, Android Studio moves on quickly. Hopefully the answer marked as 'Best Answer' above should help. If not, please shout back.

Steve.