After importing the project file disappeared R.java I tried Project - Clean, nothing ...
Yes, if you've any errors on your *.xml files. The R.java file will not generate. Try to clear that errors first. After, clean your project and try to run.
Hope it helps you.
Go to Project and hit Clean. This should, among others, regenerate your R.java file.
OR there might be any error in one of XML files.
//once you import your project. your library jar files wont get import it seems.
try to put that libs in project from C:/user/musanin/ and D:/java/work_Max
Clear all errors from the "res" folder and clean. It will generate your R.java file.
That implies errors on the layout or Manifest file , which are XML . Fix them first and clean the project
Without Removing the error present in .xml file your R would not appear..Open your .xml file and see what the errors are..If they are false error then just format the .xml file [ctrl+shift+f this will format your file] and save it. Then Clean your project and buil it again..You will get your R.java back.. :-)
Rectify the errors in the xml files and after that do
1) clean the project (or)
2) Restart the eclipse
I lost the R files once importing the project. The reason was target SDK conflict (in .manifest file) between appcompat library and my project (my project had 19 whereas appcompat was 21).
Change the project's android:targetSdkVersion into that of appcompat library project.
Clean the project.
And you should be good to go.
Related
I accidentally deleted the generated java file R.java. Is there a way to rebuild this file as my project cant run or debug?
I tried cleaning the project then rebuilding it but that doesnt work.
Quick way:
Right click -> Restore from local history.
A window with all the changes you made should appear.
EDIT:
If there are any errors in the layout or any resource files the R file will not be restored after a clean - build
Without having more information, the answer is that R.java WILL be re-generated. Unless you have a compilation error.
Errors in layouts can also hinder R.java from being generated. So check that also.
You can clean and build the project to regenerate.
Gen files are regenerated automatically if you have the Project->Build automatically option is checked. If it's not checked, you need to rebuild it manually by Project->Clean...
Make sure ther isnt any error in a XML file, for example your layour files or Manifest. Clean your project after that.
I have map Project in Eclipse IDE and I Cleaned It From Project Menu.It deleted mY BIN Folder and also Gen Folder.Now I Have tried Much BY Build Manually and also from Android Toold To Fix Project Properties But It is Not fixing the Problem and In Source Files R is Red underlined and Bin and Gen Folder are Not Being Created again.Please any oNe Help me to To Get Out OF this issue.
There may be Some Reasons :-
1.from Project-> checked Build Automatically.
2.There Should not any error in your xml otherwise R file will not build automatically.
3.Refresh the project & Restart eclipse.
First backup(e.g. zip) your whole workspace before you start experimenting. Then try to remove IDE specific files e.g. .project .classpath and setup it again. If it fails create new project with similar configuration and simply copy your libraries and source code into new project. Eclipse IDE is pure magic sometimes.
If you have imported this project, then try import as a general project, not as android project. then in build path see if all libraries are present, then run as android application
you have to try till you succeed process.
Try following steps:-
Make sure there is no error any any of your .xml files .. check in
Problem section..
Make sure all your impoert are correct, Eclipse sometimes do import
android.R; on its own, so remove that..
If that doesnt succed make some changes in Manifest file say remove a
word save it then again add that word save it.. I know it doesnot
make sence as code but making changes in Manifest files rebuilds the
workspace an so is the auto generated files. then clean build your
project.
Restart Eclipse as last resort..
try the following steps to help us
remove if imported import android.R; and after like example if your application package name is com.example.project you need import like import com.example.project.R;
I am creating new Android application in my Eclipse.Application is created but the R.java file is not creating,I am getting errors R cannot be resolved.
IS there any issue in my android-sdk?
Thanks
Try Clean and Build
if it does not work please close the eclipse and open it again
It should work.
You can try following things.
1)in project tab(topbar) there is clean option try that, if your code is fine it will regenerate R.java file
2)if you imported import android.R.* statements, remove it, You should add your.project.name.R.* instead;
3) there may be errors in your xml files, check error viewer it should show errors there.
Check this. have you imported import android.R;in your project. If have means remove this import android.R;. clean and Rebuild your project
import android.R;
No generated R.java file in my project.
R.Java not generated.
R.java file not getting generated.
When you clean and build your project R.java gets generates automatically. Try the above links.
There are 2 ways to solve this problem:
1) In Project Explorer, Right Click on your Project, then go to Build
Project
2)in project tab Go to clean option, if your code is fine it will regenerate R.java file
Clean your project and try again it will help u
From Eclipse Menu Bar;
Enable Project -> Built -> Built Automatically
While compiling my project, I lost my R.java file.
I recreated the new project and replaced all my .xml files, .java files, and all my images in the project, but in that project I also lost my R.java file.
What should do to solve this problem? Can I recreate my R.java file for the project?
The R.java file is automatically generated by the Android tools ; so, you should always be able to re-generate it.
In this kind of case, forcing a clean and full-rebuild of the project generally helps.
In Eclipse, try :
Project > Clean
And choose to clean your project.
Copy all the src files to a backup folder.
clean and build the project.
You will get the R file.
Then copy back the files back to src
There might be 2 possibilities:
There might be any error in one of XML files.
Just clean and build your project again.
I have the same problem and it came down to having a resource file named 'case.xml'. It seems that 'case' is a reseved identifier. I just changed the name and that fixed the issue.
Usually "losing" your R.java file happens when you have an error in your XML. The same for the resources.ap_ FileNotFound issue.
Try to have a look in the error list and see if you have any errors in your XML files. Fix them and then re-build as mentioned above.
If you try all the above answer and you still getting the error then check your java file.
If there is any import android.R file then remove that sentense.
again try cleaning and building you project.
I hope this will do.
If you clean project while your .xml file contains an error then it will remove your auto generated R.java file, so don't clean your project while any of your .xml files contain an error.
When I changed some design in .xml file, R.java file automatically deleted. How can I get back that file and what is the solution to resolve this problem, that in future this problem does not occure.
check all your errors in xml files structure (layouts, string etc...) even if sometimes they are not easy to spot.
My advice is to undo the latest things you've done until you find where the errors were and fix them.
Once they are all fixed the R file will be created again (maybe you need to clean your project: project -> clean)
In the future just try not to break the xml files and this won't occur again xD
You can also disable automatic build in your Eclipse IDE(Menu -> project- > Uncheck build automatically). This way the R file will be recreated only when you manually build the project and not when you save changes in an xml file.
Fix your errors and the R.java file will return...e.g when i added an image in my resources folder its name was in uppercase....when i changed it to lowercase,immediately after doing it my R.java file returned...its all due to errors...just fix them and it will return
I agree with #maid450.
I also have faced similar situations.
If your problem isn't resolved after all this, ultimate option is to create a new project, and copy files to it.
one solution is that Go to Eclipse project tab -> uncheck Build Automatically -> Clean the project.Make sure that there is no error in your project also don't try to edit the R.java file one it will created. Then manually build the project. you will get the r.java file.
The best solution for Mac/Eclipse user is to go to the SDK Manager and re-install the Android SDK Build-tools, and then restart Eclipse.
For some reason after performing a Clean action on a project the R.java file for all projects happens to be deleted from the system.
Clean the project.
Menu [Project] -> [Clean...] -> Select you project -> [OK]
Project will rebuild automatically, if not, chek
Menu [Project] ->[Build Automatically]
The R file deleted automatically when I changed my activity_main.xml in Android Studio.
What I did was copy the R java file from another project and paste it into the project in which it got deleted.
Hope it helps. :).
Location for R file.
Project/app/build/generated/source/r/debug/com.android.'projectname'/R.java
Where is the R.java file in Android Studio?