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
Related
I'm new to Android and stuck with this error. I just imported an existing project to eclipse.
Plz help me to solve this. I googled a lot. But i can't solve this.
Thanks in advance
possible problems:
1- its possible that you have 2 resources that have the same name!
2- In one of your files you must have imported a wrong R package...
3- or you have a resource (like an image) that has the same name of a resource in android SDK files
4- try to rebuild and cleaning the project
I think your problem is No.2.. try to delete every import statement that has imported R package, then import the suggested R package yourself
Probably try to clean the project if you are using eclipse.
Go to Project -> Clean. Select your project.
Also keep Build Automatically option in Project menu checked for future changes.
RK
http://ctrlaltsolve.blogspot.in
I have developed my application by integrating two applications,
one entirely developed by myself,
one form an opensource project that i have modified.
Now time has come to put the two together.
But when I do this R fails to generate properly.
Please see the screen-shoot:
Thank you for any support!!!!
EDIT EDIT EDIT EDIT EDIT EDIT
It works if I manually do the import
import com.examples.android.calendar.R;
DOES IT MAKE SENSE????
first delete your R.java under gen folder
clean your project
import android.R file
shortcut cmd+shift +o for import R
If you run a clean on the project it should regenerate all the generated java files, namely R.
In Eclipse, under the Project menu, is an option build automatically. That would help you build the R.java file everytime modifications are made. The Clean... option is also there under Project.
Try to delete the bin and gen folder and rebuild the project
change the build target version and clean the project, after completing that change that build version to previous.
it works for me.
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 copied my program at work to another computer so I can work on it here. When I try to create New project from existing code I get the dreaded R. cannot be resolved to a variable.
Apparently, R.java is supposed to be in the gen folder but it isn't. Eclipse tells me to import R.java but we all know that isn't correct.
None of the many answers I have seen explain or solve my problem. Any help is greatly appreciated.
I've cleaned the project - as advised - many times after doing other things but it does nothing.
try doing something like this type R and give a control + space. It will give few suggestions among which you may have the R.java file related to your project. Import that R instead of the default android.R . Before doing all these check if your project shows any errors in the xml files. If you have any errors in any of your xml files the R.java file will not be created
R. java gets generated .(Thats what gen stands for 'gen folder') Do not import R.java as suggested by Android, clean your project and rebuild it and the R.java file will be created in the gen folder unless your project has errors.
Let me know how it goes
Do not modify the source (such as importing R.java) if it worked on another computer.
Right click the project and select Android Tools -> Fix Project Properties.
If you do not have errors in your xml files, this should work.
EDIT:
If you do not mind other IDEs, I think IntelliJ IDEA is good for Android developing.(compared to Eclipse) and it should save a lot problems.
Maybe you can also try doing this instead of creating 'New project from existing code':
In your eclipse go to:
File -> Import -> General -> Existing Projects into Workspace -> browse to your project -> Finish
Hope that helps. :)
Try importing your R class manually. Go to a java file in one of your activities and try this in your import statements.
import com.yourpackage.name.R;
Aside from the other solutions, try changing the build of your app through
properties > Android
then revert it back to your original build.
or just in case, try checking your layout or res folder
If I'm not mistaken, R couldn't be built if there is something wrong with the res folder.
Aside from the other solutions, try to delete the package that is causing the problem under the "gen" folder and let eclipse rebuild it.
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.