I think Android Studio 3.5.3 has many issues needs to fixed.
Recently I had issue with the Android SDK so I had to uninstall it and reinstall to solve the problem.
Now when I try to open another existing project suddenly it generates corrupted classes some with the name R in that project.
I have tried the below options with no success.
Invalidate Cache and Restart.
Clean and rebuild the project.
Sync project with Gradle Files.
Sync with Files
Exit AS, Delete .deal folder, .gradle folder and .iml files. Then import the project.
Again uninstall Android SDK and reinstall.
Unfortunately non of the above helped me.Kindly assist.
what helped me, I had to manually copy the folder with all of the clean java files from the C:\Users\name\Desktop\ProjectName\app\src\main\java\com\ to somewhere safe.
Then I exit Android Studio,Delete everything in \src\main\java\com\ and then i went to the location where i had pasted the folder with my java files, copy them and paste them back to C:\Users\name\Desktop\ProjectName\app\src\main\java\com\
Magical it works,I don't know how but it solved my problem.
I had a problem with eclipse (mars) on my android project so I looked it up and found this question, I followed the first answer and they made me delete the .project file (which is located in workspace\.metadata\.plugins\org.eclipse.core.resources\.safetable) when I tried to paste it later it was gone. Now I'm getting a lot of errors in eclipse when I try to do stuff like run the project. Is there any way to recover it? Or is there a duplicate I can download from somewhere?
Any help would be appreciated.
Thanks,
If i were you i would upgrade to android studio.
You can try to import your broken project and maybe android studio will fix it for you. Since android studio works with Gradle builds it might fix just that.
im facing a strange problem in eclipse adt. I wanted to clean up my workspace and deleted all the double appcombat v7 files, and wanted to keep only one of it. it seemed that eclipse always generated a new folder for that.
so after doing so, all my projects crushed...the R.Java Files are missing and nothing works at all. already tried to reimpost the appcombat v7 files, eclipse is arguing there too.
At the beginning Eclipse tells me i aint got the newest version, but i downloaded and installed elipse without any better achievement.
Cleaning did not work for me, i also installed eclipse new, no changes too
HELP!HELP!HELP
For some reason in Eclipse my "Referenced Libraries" is showing up as "com.android.ide.eclipse.adt.LIBRARIES" this is causing me major problems. I have removed the SKD and eclipse and re installed them get the same thing. How can I fix this?
So this is actually not an Android SDK problem but rather an Eclipse issue in which a reference has been ruined. To solve this just delete the .metadata folder from your project work space then import your projects back into Eclipse.
This question already has answers here:
Developing for Android in Eclipse: R.java not regenerating
(64 answers)
Closed 9 years ago.
Did a fresh install of Eclipse, JDK and android-sdk.
I am currently receiving this error when creating a new project
[2010-09-26 16:07:56 - Test] ERROR: Unable to open class file C:\workspace\Test\gen\com\example\test\R.java: No such file or directory
What's the reason for this and how do I fix it?
Eclipse Helios 32 bit
java version "1.6.0_21"
Android sdk API 8
P.S. I'm new to Android development.
EDIT: I tried most of your solutions, but nothing worked. So I started using my friend's install of Eclipse Ganymede.
I have had same issue, all what I needed to do, was create project and restart eclipse.
//Edit: Complete collapsing of "Package" tree works as well.
This is a mighty annoying error.
It happens 100% of the time when I create a new android project.
What seems to work for me is to just delete the file (which DOES exist and is accessible by my user), then hit build, and it will regenerate it and stop moaning.
It's clearly a bug as there are too many people getting it simply by filling in the boxes in the new project dialog (like me) without even modifying any code!
Have a look at your console. It is an aapt aborted error. Since aapt is the tool that auto-generates R.java, therefore, R.java was not getting generated.
Since R.java is a auto-generated file that stores information about your drawables you should rebuild your project. Before that have a look at your layout xml files and check them for errors.
Notice that Project -> Build All should be selected. Also try to run your project.
Removing Read Only attribute on Eclipse workspace directory and Project->Clean->Build Project
did the trick for me. I then clicked on the project directory from within Eclipse and did a F5 (Refresh) . R.java was generated in the gen folder.
I had a similar error on the creation of new projects myself. After messing around I tried moving the R.Java file into the same location as my projects java file (the src file). Eclipse then saw I removed the R.Java file from its location and created another and that seemed to clean up the error.....I dont know if it was because eclipse rebuilt the file and then saw it or what but that seemed to work for now.
After creating the Project, Right click the Project Folder within the Project Explorer on the Left Tab of Eclipse.
Click on Source->Format.
The Console will say:
[2010-11-24 11:57:42 - YourProject] R.java was modified manually! Reverting to generated version!
Then you're good to go. Try running your Project and it will compile.
Check your imports. If this has sneaked in, then delete it.
import android.R;
Had a almost identical issue with Eclipse Helios 64 bit on Linux, but I had the "1.6.0" API selected like you. The bizarre thing was I could type;
cat <the path it was moaning about>
in a console it would display correctly.
I created a new AVD which used Android 2.1, the issue magically vanished. Perhaps it's a bug in Android SDK or Eclipse?
Right click on your project name in package explorer. Then click 'Validate'. It will be fine.
Here is how to fix it:
Go to your "workspace" folder and make sure it's not "read-only"
Eclipse Menu > Projects > clean
Had the same issue.I was able to solve it by doing the following:
go to Window/Preferences/Java/Build Path
select 'Folders' and change the output folder to 'gen' (this is where Android looks for the generated java files,but the default in eclipse is 'bin').
restart Eclipse
Windows 7,Eclipse 3.5.2
Configure buildpath.. check android , it worked, of course i followed one of the posts mentioned above window, preferences, java, java build path and selected project,
then created a project, and tried to build same error, then i checked build path and saw android is unchecked, checked it and build again, it works!
I had this exact same problem with no helpful errors. finally, I tried deleting my debug keystore and it worked:
rm ~/.android/debug.keystore
I had seen people mention that, but I figured it wasn't my problem because I wasn't getting any errors relating to the debug keystore. I found the answer here:
"Debug certificate expired" error in Eclipse Android plugins
apparently the debug keystore is only valid for one year.
I would say that once you have created your project and you've mention the R.class error --> just restart the Eclipse IDE and everything will be fine ;)
1.-Open Eclipse
2.-Open Window/Preference
3.-Expand JAVA option
4.-Select Build Path
5.-Check the option "Projec"t and uncheck "folder" options
6.-Click on OK
7.-Restart eclipse IDE
Let's go to code !!
This problem can be solved by merely cleaning and rebuilding the project. How ever there is a link to the latest version of Eclipse for Android.
**Eclipse Java EE IDE for Web Developers.
Build id: 20100218-1602
(c) Copyright Eclipse contributors and others 2005, 2009. All rights reserved.
Visit http://www.eclipse.org/webtools**
Here is a link to Android Tutorial with Eclipse
http://developer.android.com/resources/tutorials/hello-world.html
In mac,
I select Project>Clean
after that, i unchecked Build Automatically
then i run the project and it works :)
Windows 7 64bit, run eclipse as administrator, solved the problem for me.
In my case there was no gen folder after pressing clear...
To solve it, i created a new gen file, then when to Build Path => Configure Path, and pressed ok.
All went smooth after that :-)
Following steps are done as solutions:
1. Collapse the project tree structure
2. Go to the workspace and remove the readonly permission of the workspace.
3. right click "default.properties" and go to properties and uncheck the readonly permission in eclipse.( this is done when the workspace shows build error even though there are no compilation issues)