This question already has answers here:
Closed 10 years ago.
Possible Duplicate:
Developing for Android in Eclipse: R.java not generating
Im using Ubuntu 12.04 with Eclipse Indigo (I downloaded classic, and it poped up with that on the splash screen, so I guess thats it). I am trying to use the Android SDK with it. I downloaded all the SDK's possible from the interface, then added the Eclipse plugin. I created a project to mess around with Android stuff, and there are two errors. One error I fixed. The other was something like, "R.java does not exist". I Googled it, and found other Stack Overflow questions similar to this one. I made a new one, because all the answers to the other questions didnt work. I tried cleaning my workspace and my project, I tried reinstalling the plugin and the SDK. Nothing worked. Is there anything Im missing to have Eclipse generate R.java? I am also using the 32-bit version of Ubuntu, if that makes a differece.
You failed to actually include any code in your question, so we cannot help to verify whether or not it is correct.
Assuming your Java code is correct, most likely your cause is an error in a resource or your AndroidManifest.xml file that is preventing R.java from being regenerated. To figure out what is going on:
Look for red X marks in the Package Explorer for resources or the manifest
Look in the Console for error messages
Look in the Problems view for error messages
Try the following to see if it helps
right click on the project
select Android tools
select Fix Project Properties
Related
When i create a new project, and press run i get this error.
The fact is i do already have jdk verison of 15 and my previously created projects do open and run without any errors. Also, if i add org.gradle.java.home=C:/Program Files/Java/jdk-15.0.1 line to my gradle.properties file the app runs without error but this way just does not seems right way to do it.
I have tried to change the SDK version from the project structure like some other questions and answers but it did not worked either. As an additon to other problems i do not have the same project structure screen as they showed so.
I do not know what to do right now, i would be very grateful if you could help me.
You should delete .gradle folder under user name. Then again run your project.
change gradle to 4.1.0
and it will be run
I know that it has been asked thousands of times, but I really can't fix this at this momment. I'm trying to update an old project(already submitet to the play store). The only dependency was the v7 appcompact lybrary and so I added it to the new workspace and updated the existing project dep[endencie, but I'm still getting the strange R cannot be resolved to a variable error.
Here is what I'm doing and even if I'm 99% sure that it is what I have to do, it's not working.
Updating the project dependencie:
everything looks nice, but when I clean and rebuild the project, here is what happens:
and the problem is still there. I'm really going to start crying, because it was a working project, buta after switching to a new workspace and checking it out from my git repository, I can't get it working.
Do you have an idea what is going on? I know that I miss something small here, I know that it has been asked so many times, but I can't find an answer fitting on my case.
Remove library project android-support-v7-appcompact and add it again properly.
also check your package name in manifest file.
update SDK Build Tools on SDK Tools -> SDK Platform Tools, if not, please try it and clean & rebuild.
check imports to see any broken R.java imports. if there is "import android.R;" remove it.
check style and layout xmls to prevent any missing drawables or depreciates.
also see : R cannot be resolved - Android error
Just to tell my experience with this problem in a Java project with JDK8. In my case I was running the project in a Mac with Yosemite. Reading the specs. Android Studio and SDK, I've found that projects could be compiled up to Yosemite version.
I changed my environment variables to JDK7 and it worked!
I am new to android development. Yesterday night I was working on my project. It was working well. But today morning I open my project I got R error. Then only I noticed my project everything is disabled.
I don't know what is happening. Please help me to resolve this problem.
You need to clean and build your project, and if that didnt work you need to check your manifest and style folder for any error that sometimes it wont hint you for errors in there.
It happened to be before, I had some issues with Java x64 and Android SDK, I couldn't fix it and someone told me to switch java, eclipse and sdk to 32 bits.
This was around 6 months ago, dont know if its the same problem.
This error occurs due to the change in the path of the library required by the Project.
Go in the Java Build Path option and try to remove and add again the library.
Tick the android sdk package name in project properties.
Finally I changed the workspace. It is working. But still now I don't know why all my folders are closed in my previous Workspace.. Thanks to all..
This question already has answers here:
Eclipse error: "The import XXX cannot be resolved"
(47 answers)
Closed 6 years ago.
Though I have all my source in proper packages.It couldn't find at the time of Building Project.Normally it shows links everything.But at the time of Build Project or Autobuild while directly running project.
The import ecnet.rd.config cannot be resolved
like it shows for all the internal imports.But external imports like imports from JAR files are working.
P.S :
My Eclipse latestly crashed but it was working well after that, Once again this kind of things are happening.
Please help to find the way to solve this.
In my experience, it is usual with Eclipse to have the build messed up. Make sure Build automatically is checked and Clean. If it doesn't work, restart Eclipse and do again.
Also as Tech Junkie comments below, try also Clean all projects.
I've seen this happen and another approach to take which is similar to m0skit0 solution (if you are using Eclipse) is to right click on the project, select maven, select update project, make sure clean projects and refresh workspace are checked, and hit ok.
After hours of struggle, creating a new Eclipse workspace, reimporting the projects and resetting up the same tomcat instance worked.
Probably the eclipse settings got messed up, and the deploy wasn't being done correctly anymore.
This question already has answers here:
Another R.Java file missing [duplicate]
(5 answers)
Closed 9 years ago.
I opened an android application project called Test Canvas and later cleaned it by
Project > Clean ...
'Bulid Automatically' option was ticked.
Then the R.java file was deleted and it did not regenerated.I tried all the other options mentioned in the questions of stackexchange.But the R.java file remained missing.
One answer said that R.java generation fails because of errors in .xml files.But there were no errors.I'm 100% sure.
Then i created a new android application project which cannot have any issues in xml files.
When i created the new project it didn't came with the R.java file. I tried cleaning and building with different combinations.It still doesn't work.
I am using eclipse Helios
Android API 15
Android SDK Manager Revision 22
JDK 7U25
Can any one help me on this please?
I understand you have tried cleaning the project. What I would like you to do is Build the project and check the console for any errors.
The R.java also doesn't gets generated if the your project contains errors and these errors are clearly mentioned in your console.
Have a look and see if you can resolve your problem.
Try the following
Close and Reopen the project
Ensure your project folder has 777 rights
Use a later version of Android, that triggers a clean build
Check Problems tab, sometimes errors are not shown on the project files/folder, but a error shows up in this tab
Check top to see the amount of memory you have left, sometimes OOM screws things up
Please use a more later version 1.5 is like decades old
Try this.
Open the properties of your Project
Go to the Android Build target of your Application
Just change the from the currently checked one to another version(can be anything, but one that is supported to at least the minSDK declared in the Manifest)
Do a clean build, if your Project has no issues like in your resources like hyphens in draw able names,unrecognized strings,missing dimension values etc ... your Project should generate the R package with the R class