This question already has answers here:
R cannot be resolved - Android error
(108 answers)
Closed 7 years ago.
I was working in a Android project and I imported it to another laptop to continue my work, but then I got this error in the project:
Description : R cannot be resolved to a variable
Resource : AccueilFragment.java
Path : /AppV1/src/com/example/appv1
Type : Java Problem
The folder gen(Generated Java Files) contain just the package com.example.appv1--->BuildConfig.java and there is not the file R.java
I was facing the same problem
Try this:
Go to Properties->Java Build Path,
Now Select "Order and Export" Tab,
Unchecked the JAR file (like v4 or v7) and then clean the project
I think this can help you.
Check drawable folders may have png images with not valid names or resources
Clean the project select project->Menu->project->clean selected project
Create a new workspace and add the backup copy of your project at newly one
Related
This question already has answers here:
Why do my java files look strange in Eclipse?
(5 answers)
Closed 1 year ago.
I have two class .java but in pdcController.java I cannot do anything:
Look the image:
Look the icon are different in BandoService works all, but in .pdfController I cannot do anything (for example I cannot suggest for method or error import). pdfController and BandoServiceare in the same project.
This is not the source file, check the file path, you're probably not in the correct package.
I guess you have several modules in your maven project and you opened the file from the parent module.
If you see the file only in the parent module it's time to git fetch.
This question already has answers here:
Programmatically list open projects in an eclipse workspace from outside of eclipse
(2 answers)
Closed 6 years ago.
I need a way to get the directory path of an eclipse project by deserializining the .location file found in the eclipe workspace at:
.metadata\.plugins\org.eclipse.core.resources.projects\myproject\.location
Its contents look something like:
#±‹#¼ %–磓¾ URI//file:/D:/proj/myproject ÀXûó#¼ QóŒ{»wÆ
so I would like to programmatically get the "D:/proj/myproject" string out of it.
Bonus points if the process doesn't use the Eclipse API.
Eclipse read this file in the method LocalMetaArea.readPrivateDescription(..).
It uses a SafeChunkyInputStream and DataInputStream for reading it.
It contains UTF8 strings and some integers.
For the complete code see
org.eclipse.core.internal.resources.LocalMetaArea at GrepCode.com
This question already has answers here:
R cannot be resolved - Android error
(108 answers)
Closed 7 years ago.
I was working on my project when suddenly the project showed an error in every java file where I used the find view by id method. Then it showed a Red line under "R". import R.java then again an error under layout id and layout name.
I have created a new project but it still shows the same error in the main_Activity.java file.
Please help me to resolve this problem.
You have not followed naming conventions properly for any view in xml files, layout file name, drawable name or same key in any values file. Whatever error is ... most likely its in res folder not in your code.
Even if it is not showing any error in res folder, it is still there !
Even if you can't solve the error, add your xml files , their names, drawable name, any one could else point out error for you.
Though it is just a small thing , I have seen 99% freshers stuck into it.
By name of your class "main_Activity.java", you certainly not in remaining 1% !!
Follow naming conventions ALWAYS !
And here are godzillion answers ... R cannot be resolved - Android error
You haven't added in code so abstractly try these:
Check AndroidManifest.xml for any errors.
Project - Clean - Clean Project.
Add appcompat_v7 library. This is an Android Support Library.
This question already has answers here:
R cannot be resolved - Android error
(108 answers)
Closed 9 years ago.
I cleaned my project and now I get a "R cannot be resolved to a variable." It was fine before I cleaned it.
I have tried cleaning it again, building the project again, creating a new project and copying all my files over, and I've gone to the Android SDK Manager and installed all the "Android SDK Build-tools" to Install all the options like the other stackoverflow posts have mentioned:
Can anyone suggest anything?
The above picture shows my generated files and lack of an R.java file.
The above picture shows my problems log.
Make sure R is in the same package as the file where you want to call it from.
(or import the package in the source file)
To change the package of the R file open your App Manifest file and change packge="" to the same package as where your source files are in.
maybe you import take other thing
See package main import in your code
should be like this
example:
import com.mypackageprincipal.R;
other import of R delete only should exist it
and after clean and build your project
This question already has answers here:
"R cannot be resolved to a variable"? [duplicate]
(30 answers)
Closed 2 years ago.
I cannot fix:
"R cannot be resolved to a variable"
I have tried cleaning, building, I have deleted and made sure that any "java.R" imports are missing or whatever but I STILL cannot seem to squash the bugger!
Any reference to id's or layouts don't work and it just feeds back an error.
Do any of the files in your resource folders have capital letters in them? Capital letters aren't allowed.
This hung me up once....
Try the following things:
Make sure none of the XML files (menus, layouts, etc.) has any errors. Those prevent the R fropm being genreated
Delete the project from eclipse and import it again
Look for Android meta data files (i think those are in a .android folder) and delete those
hth..
Try the below steps to resolve the issue,It worked for me:
Cleaning the project and then building it again. Closing project and
then opening it again.
Closing project and then opening it again.
Going to Project Properties > Java Build Path > Tick Android Version Checkbox
ensure no errors in XML files,Because errors in xml file Prevents the R.jave file to be created.
try downloading the latest version of android SDK,if available.