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Android

Posted by Ben Morse
Ben Morse
6,068 Points

Cannot Resolve symbol 'R'

When i was running my app build, it came back saying 2 errors and one of them was the R.java.

Went from working fine, to not. The only thing I differently from the working build to not working was added ImageView, only had one size.

This was the error from the Gradle Build:

Error:error: invalid symbol: 'import' Error:Execution failed for task ':app:processDebugResources'.

com.android.ide.common.internal.LoggedErrorException: Failed to run command: C:\android-studio-bundle-windows\android-studio\sdk\build-tools\android-4.4W\aapt.exe package -f --no-crunch -I C:\android-studio-bundle-windows\android-studio\sdk\platforms\android-19\android.jar -M C:\Users\Benjamin\AndroidStudioProjects\EmojiProject\app\build\intermediates\manifests\debug\AndroidManifest.xml -S C:\Users\Benjamin\AndroidStudioProjects\EmojiProject\app\build\intermediates\res\debug -A C:\Users\Benjamin\AndroidStudioProjects\EmojiProject\app\build\intermediates\assets\debug -m -J C:\Users\Benjamin\AndroidStudioProjects\EmojiProject\app\build\generated\source\r\debug -F C:\Users\Benjamin\AndroidStudioProjects\EmojiProject\app\build\intermediates\libs\app-debug.ap_ --debug-mode --custom-package projectClown.emojiproject -0 apk Error Code: 1 Output: res\menu\import.xml:0: error: invalid symbol: 'import'

Anyone else ran into problems like this?

1 Answer

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

Hello,

A couple of things you can try to do is to clean and rebuild your project by going to Build -> Clean Project, then Build -> Make Project.

Another option is to try and go to File -> Invalidate Caches/Restart, then select Invalidate and Restart.

Please let us know if this doesn't help and you need more assistance.

Ben Morse
Ben Morse
6,068 Points

Ok, i'll try it. Why does it do that? Just curious..

James Simshaw
James Simshaw
28,738 Points

Cleaning the project removes all precompiled binaries that have been created. Then by making the project again creates those from scratch which should contain the proper references for R.

From my understanding, invalidating caches will remove all stored versions of libraries and maybe even some precompiled code and then refetch them when you restart.

*Note: This might not be everything or even what they really do, but I have seen doing each of these get Android Studio back to a working position without changing code from similar situations.

Ben Morse
Ben Morse
6,068 Points

It didn't work. Dumb question thought. I am rebuilding it and i noticed that when I created an activity called ImportActivity, I get the 'R' error. Also I have like 4 activities that i'm creating, don't know if that plays a part.

James Simshaw
James Simshaw
28,738 Points

Did the error messages change at all? If not, I'd probably need to see and poke around the code to be able to help further. The best option would be putting it on GitHub if you can and would want to.

Ben Morse
Ben Morse
6,068 Points

Go figure, seems like when I named the Activity GalleryActivity instead of ImportActivity, it works....

Odd...