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Android Studio Open Wrong File When Trying to Open XML layout file [duplicate]

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Android Studio shows wrong file contents
(10 answers)
Closed 4 years ago.
I am using android studio 3.3, my project is using kotlin 1.3.20 with build gradle 3.3.0
however when i try to open xml file, it open different file with the right file name and the right file path:
And when i try to see this xml file in my Git, my file is normal
when i try to run this project, it run with no problem at all.
i already try to invalidate caches/restart but the problem still exist.
this error affecting random xml files. some of my xml layout files open my kotlin file. some of them open auto generated file
please help.... is this something to do with error indexing? how can i fix this?
UPDATE :
found someone who might have the same problem with this, in google issue tracker : https://issuetracker.google.com/issues/122988154
UPDATE 2 :
this issue is not just happen in xml file but also in kotlin file.
i try to open my activity file, but it open one of data binding generated classes

So Apparently this issue is bug in Android Studio. after do some research, this bug might be happen not just to xml layout but other xml file too such as resource like dimens, strings, style etc..
finally there is some workaround for this issue that work without reinstall Android Studio.
Thank you #ChetanJoshi for the suggestion in the comment section.
Steps:
Copy the error xml file to somewhere in your PC directory (as backup file)
Delete the error xml file, if there is dialog file usage appear klik delete anyway
Copy the backup file and paste it back to where it was deleted
Run your project. it should run
If you are using Data Binding and there is error appear about auto generated data binding
class, Clean Project then rebuild project. if the error still appear try to invalidate caches/restart, rebuild project then run the project

Restart your Android Studio, if not working, Restart your PC.
or
Go to plugins -> Android support and disable this. Restart Android studio and enable the plugin again
After that don't forget to Refresh your Gradle project.

Build Error: Invalid resource directory name: "res renderers"

Recently in my Xamarin.Forms solution, inside the Android project, I am getting the following build error:
Invalid resource directory name: "res renderers"
Doing a small amount of investigating I found the culprit inside the obj>Debug>res> folder. I tried deleting the folder and rebuilding but it seems to recreate it every time. I'm not sure why it started doing this and causing the IDE006 warning as well.
Anyone know how to remedy this? Is there a way to configure the Android project to ignore this folder?

I had the same problem and I did the two followings to solve:
try clean/build solution several times (after few times it worked for me)
exit and come back.
I hope this helps.

I had an .axml file inside my Android project that was causing the res/renderers file to be created that contained I suppose a corresponding file. Due to that creation I was getting the error but upon deleting the .axml file in my project, cleaning and rebuilding, the res/renderers folder stopped being created on build. I had that .axml file created before and not cause this error so I'm not completely convinced this is the real answer but it solved my problem and hopefully when I recreate the file it doesn't happen again. Perhaps use of a regular .xml would be better.

R.java disappeared

I recently downloaded the Android Support Package and have been using it trying to get my application, running at SDK 10, to use a GridLayout.
Anyway, I cleaned my project a few times working on this error in my XML files, and then when I went back to my classes in /src, every single reference to R.* was an error.
This has happened to me before, but it usually fixes itself, and it has not yet. Does anyone know what to do?
The R.java file is no longer in my /gen folder.

It sometimes happens when you import another project First i suggest you to build it, it will create automatically .
If it's not working then try to create new project from existing source and specify the downloaded project . It worked for me
Hope this works for you let me know..

Sometimes if there is an error in your XML files R.java won't build. Go through your XML files to make sure that everything is in order (typo, forgetting to close a bracket, etc). When you fix that it should build itself again.

You can also try Adnroid Tools>Fix Project. That may help you to create gen/R.java file

Follow following steps :
In Eclipse,
=> Right Click on Project > Android Tools > Fix Project
By this way, you can fix many common problems which can help generate R.java in gen/R.java file.

There can be several reasons why this occurs. The following I have found happen to me and I have included the steps I took to resolve them.
First step is to try and clean the project (from the Project menu option I believe)
Check there are no errors with your XML files. Sometimes this is obvious from the red 'x' that appears next to an XML filename in the Project exlporer window and sometimes it is not. If it is not obvious check the 'Errors' window (whic is founf in the 'Windows' Menu option
Failing that I have found that by disabling the automatic build option, adding some arbitrary comment to an arbitrary source file, saving the source file, clean the project, remove the comment and then re-selcting automatic build can work too.
Apologies for the approximate locations for some of the Eclipse functions but I am not currently in front of Eclipse to check.

This happens when you have an error in the res folder.
Fix the error first, then do :
Project --> Clean --> Ok
Et voila !

R.java file is not generated?

I am working on an app which was working fine .
I tried some new layout files but when I build the project the R.java file is not generated .
I tried clean and build project but still the file is not generated.
Why is this happening?
What should I do now to regenrate the files?

Android will not generate the R.java after a clean if any of the XML files have errors in them. Check for any errors and fix them. R.java will then be built.
If that doesn't work, sometimes Eclipse looses track of the file. Click your project and hit F5 to Refresh the project.

R.java file is automatically generated in application. If you want to know why your R.java file is not generated then there are some problem into your last layout file made by you.
If there is illegal according to android OR if there is any error in XML file then R.java file will be deleted.
Thanks.

Try refreshing your project. Right click on your project folder in the project explorer, and click on the Refresh option

In my experiences, Eclipse ADT will not show every errors in package window, e.g. Asia characters file names, and system-config-file from Windows. Sometimes, you have to re-import your project after check and remove these files.

I tried the following. Consider the application name to be "My First Application". Then the name of the package should be com.xx.myfirstapplication.yy. Make sure that you add a yy after the application name in the package field while creating the application. Hope it helps.

Check if you have main.xml file in the menu folder, but don't have in strings.xml
<string name="action_settings">Settings</string>
Sometimes that is the reason in my case.

So I realize this question has already been answered. However, I had the exact same problem today and was stuck on it for about an hour. I have come up with a different solution that solved my problem. The XML did not have any errors/typos in them.
I was trying to get the Google Wallet example to run.
My solution ended up being that the android:minSdkVersion (in the manifest file) was set too low. I simply raised this value and all errors were gone.

Magic behind R.java file

Recently I have been having quite some problems with R.java file. Now I have decided to do a backup and delete the file to see what happens.
Nothing happened, so I created an empty R.java file and hoped for the best. Now Eclipse seems to figure out that the file was tampered with and even issues a warning:
R.java was modified manually! Reverting to generated version!
And that's all there is. I tried building it manually but got no results.
So, I have two questions:
what should I do to force Eclipse to regenerate the file
what is happening here? How is the file created, where is the code that is generating the file?
I would appreciate any help. As usual the problem occurred just a few days before the deadline :)

I had a problem getting my Android app to compile, with seemingly inexplicable errors about failure to generate R.java.
The problem was caused by my previously killing the Android emulator during the build. Don't do that! A clue was the appearance of several left over *.out.xml files.
The solution was to select the project, click Project->Clean, and then manually delete all the *.out.xml files. Only then could I click Run->Run and have a successful build.
One more thing: I'm using Eclipse. I had to make sure that the project was selected in Package Explorer, and not just some random source file. Easy to not notice!

R.java is autogenerated on build. It's content is based on the resource files (including layouts and preferences).
When you deleted it, it was recreated, but if you create your own, you will get into trouble as the build system will not replace it.
You can simply delete it again (manually or by choosing Project->Clean) and rebuild your program.

I had this problem several times, and most of the times it is caused by some mistake in the "res" files, check everything is OK in all your res files, mainly XML, and after you can built.
For example, two common causes of this problem can be:
Didn't properly spell the name of a property in a Style in a XML file.
Didn't properly close a string in the XML of a locale file.

I found the problem - I have created a 9patch image with the patch area defined only on the Y axis (I was trying to prevent resizing on the other one).
The question remains: Why isn't there a warning about the error? Or if there is - where is it buried?

Sorry, but try to check the output in Eclipse. May be you have some errors that prevents Eclipse to finish build proccess(check your AndroidManifest.xml, is it correct?).I mean, that you should check all your resource files(string.xml, layouts, ...) and interfaces(*.aidl), may be there are some problems(inconsistent syntax, or something....) that prevent eclipse to generate R.java.

I had the same issue and it was that I had named a resource file (a .png image) using uppercase letters. (ImageButton001.png instead of imagebutton001.png).
Afther changing the name of the file my R.java came back.
Rgards,
Juan

If there's insufficient free memory the build tool will silently fail (Eclipse will not show any errors or report anything in the error log). Close your other open applications (e.g. the emulator and browser) then add a space to the application manifest file and save it.

As ponkin stated - you probably have one single problem that causes R not to re-generate itself, because of which you now have one million and one problem.
Do not try to create R class yourself. Try to think of the last XML you've been messing with, and check it for errors
I've had the same problem here

Make sure there are no errors is your Manifest file.
If you delete the resource string app_name in /res/values/strings.xml, it doesn't know how to generate R.java right.
I found this a problem when doing the HelloSpinner tutorial.

I found that an unwanted resource was causing an issue. As soon as I deleted the resource R.java was generated.

I've had this problem, to rebuild R.java I cut the code in the xml file I've just been working on (or try others if this doesn't work), deleting the file then creating another with the same name and pasting the code back into it. Hope this helps.

Something that can be good to know is that if an XML file contains a ?, then R.java is not regenerated and the error is not shown in the XML file (sometimes it shows up after a while)
I you have a line similar to:
< string name="questionmark"\>?< /string> <br>
try to change the ? to something else and see what happens to the R.java file - worked for me

I had a similar problem, I had renamed a .wav file in the Raw folder with a capital letter. When I changed to all lower case, cleaned the project and it rebuilt R.java fine.

As others stated, stay away from creating your own R.java file. I ran into the same problem when I first started with Android, and it took some time to figure out what caused by compilation errors.
What were you trying to do with the R.java file?

I had the same problem. I just went to:
Project -> Properties -> Android
and chose the right Emulator for my project, I had 3 different to choose from in that moment. I realized that i changed the Emulator in some given moment. So try to change the Emulator, that might help!
Good luck

I had the same issue with IntelliJ. The problem was that I had app_name defined twice in strings.xml For some reason, IDEA inspections didn't pick this up automatically.

I read this on another site and it helped me:
"If that doesn't fix your problem, try modifying your AndroidManifest.xml (just add a space and save). I've heard that will force the R.java to rebuild. "
So just add a space in the manifest file and then rebuild!

As a side note, usually those *.out.xml files are generated by trying to build your project whilst an xml file is focused in the editor

I had similar problem.Cleaning project didn't solve the issue and there was no error in the code or the uppercase or spaces in file names.
The solution was going to a popup window which came when you choose PROJECT-->CLEAN and then UNcheck the "Start a build immediately" option. Clean the project. Close and reopen Eclipse and then build the project (PROJECT-->BUILD).
The question remains why simple clean and build without closing Eclipse didn't worked.