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

Furkan Demirkan
Furkan Demirkan
7,926 Points
Posted by Furkan Demirkan
Furkan Demirkan
7,926 Points

"Debug" is not openable in the "r" folder. Please help...

In the video, the r folder has "debug". Well, in mine, debug doesn't have the arrow indicating that you can open it... Im not sure if this is an Android Studio error. When I tried continuing on without opening it, on the code: TextView factLabel = findViewById(R.id.factTextView ); R is in red and the error reads: Cannot resolve symbol 'R'. Should I reinstall Android Studio?

2 Answers

Greg Hesp
Greg Hesp
1,808 Points
Greg Hesp
Greg Hesp
1,808 Points

Try File -> Invalidate Caches/Restart, and or Build -> Clean Project

I've had this before and the above seems to fix it

Furkan Demirkan
Furkan Demirkan
7,926 Points
Furkan Demirkan
Furkan Demirkan
7,926 Points

Nope, it didn't work. I think something may have gotten corrupted because put Android Studios to my PC from a USB. I will try uninstalling it and downloading it again. Appreciate the help though :)

Gunjeet Hattar
Gunjeet Hattar
14,483 Points
Gunjeet Hattar
Gunjeet Hattar
14,483 Points

Hi Furkan,

Excuse me. Had been travelling during the vacations and some code detox time too :)

I've jus shifted to Android Studio infact. But since I've had a quite an experience with Eclipse and given that the logic will remain the same irrespective.

If you cant expand your build and see the R file. It's simply because there was some error while creating the project.

Also did reinstalling help? Usually an error with R resolution occurs when some dependancy goes missing.

I just had the app built and everything worked fine for me.

Another thing try installing from the Android website.

Hope it helps. Ask again if you need help.

Furkan Demirkan
Furkan Demirkan
7,926 Points
Furkan Demirkan
Furkan Demirkan
7,926 Points

Thanks, it works now!

I spent yesterday switching to a new PC, so I didn't really have time to do much else. Literally 10 minutes ago, I decided to try downloading it from the Android website because I formatted my old PCs harddrives to put in my new PC so I lost the old SDK, and I tried opening the R folder and it worked.

Unfortunately, all my progress has been deleted (wasn't really that far into it anyways) and I'll be watching the videos from scratch, but I'm ok with that.

Thanks for the help, much appreciated :)