I'm using eclips with the android sdk plug-in, my project was working normally with no errors at all and it was a very clean project, but when i deleted and added pictures (PNG pics) to my hdpi folder, plus i also deleted the ic_launcher, but renamed my new icon as "ic_launcher, but R.java was not generated, I and renamed all the pics in lower case without spaces, and than cleaned the project and made sure every link in xml is correctly renamed, so is there any way to regenerate the R.Java ?
A couple of things to do here;
Check if Project --> Build automatically is on
Refresh your layout folder through the right-click action
Clean all your projects etc
If 2. didn't work, restart Eclipse
While doing all this, keep an eye on your console view, it will report errors if you named some resource invalid.
Apart from Project=>Clean, i would like to suggest you to check Windows => Show View => Error log. It may help you. Android Pre compiler shows error there.
just reload your project, maybe it helps (close and reopen eclipse)
Related
All of the sudden with no warning, any project I open in IntelliJ opens the .iml file only. If I go into Project Structure and set the .iml file to the root for the module, I can get the project view back, but then it says the SDK isn’t defined. If I do that, it works again but I have to reopen each folder under src folder (my java classes) individually, and when I exit and come back in I have to do it all over again.
This is happening for every single project I try to open, and I haven’t messed with any settings to cause this. Do you know what I can do to fix it? I am having to redefine the root module and sdk every time I open a project rather than it using the defaults as they are set, so each time I open my project I have to define it all over again because it has “forgotten” the module and SDK. I saw a fix that said to back up and delete the .idea folder but it didn’t help anything so I’ve added it back.
As of now, any project I open, new or old, has no defined module or sdk, even though just yesterday any project would open without a problem.
EDIT: If it helps I also use Pycharm, which is also by JetBrains, and I am having no trouble with it.
Wow Yes, "one drive for business " causes this behavior oddly.
Fix:
Moving the entire folder to outside of one drive has
fixed it,
after 2.5 hours of experiments by two of us!
-Henry
I disabled the "files on demand" feature in One Drive and that worked.
I was working around with my Project when I noticed appcompat_v7. I didn't know what exactly that was, so I just deleted it. And now, none of my projects are generating R.java, even after cleaning and rebuilding. Did everything which I could find on the net, but all in vein.
I managed to get back appcompat_v7 by making a new project, but even that wasn't generating R.java. I've messed it all up now, what to do next? How to get back R.java?
Strange fix but this workes
Right-click on the "appcompat_v7" project and go to -> Properties -> Android.
Your target build should already be set at the latest build (in my case Android 5.0.1). Click any other android package (apart from its current target) and click "Apply". Click "Ok" to close the box.
Re-open the Properties box by the same method but this time check the latest build (in my case Android 5.0.1) as the Project Build Target. Click "Apply", then "Ok" to close the box.
Clean the appcompat_v7 project. You'll probably need to clean/build all other projects that reference this library.
This solved it for me.
Tell me the possible solution for R.java file missing or "R cannot be resolved to a variable"
I have tried the following still R cannot be resolved as a variable error is coming.These are the following things i have tried:
Make sure that anything the R. links to is not broken. Fix all errors in your XML files. If anything in the ADKs are broken, R will not regenerate.
If you somehow hit something and created import android.R in your activity, remove it. Run Project -> Clean. This will delete and regenerate R and BuildConfig.
Make sure Project -> Build Automatically is ticked. If not, build it manually via Menu -> Project -> Build Project .
Wait a few seconds for the errors to disappear.
If it doesn't work, delete everything inside the /gen/ folder
If it still doesn't work, try right-clicking your project -> Android Tools -> Fix Project Properties.
Check your *.properties files (in the root folder of your app folder) and make sure that the links in there are not broken.
Right-click your project > properties > Android.
Look at the Project Build Target and Library sections on the right side of the page. Your Build Target should match the target in your AndroidManifest.xml. So if it's set to target 17 in AndroidManifest, make sure that the Target Name is Android 4.2. If your Library has an X under the reference, remove and re-add the library until there's a green tick. This might happen if you've moved a few files and folders around.
What to do if R doesn't regenerate
This usually happens when you have a broken xml file.
Check errors inside your XML files, mainly within the /res/ folder
Common places are /layout/ and /values/ especially if you've changed one of them recently
Check AndroidManifest.xml, I find that often I change a string, and forget to change the string name from AndroidManifest.xml.
Check that Android SDK Build-tools is installed. Window->Android SDK Manager->Tools->Android SDK Build-tools
Make sure when you update the Android SDK Tools, you also update the Android SDK Platform-tools and Android ASK Build-tools. Build fails silently if they don't match.
If you can't find the issue, right click /gen/ -> Restore from local history... -> tick R.java -> click Restore. This doesn't solve the problem, but it will clear out the extra errors to make the problem easier to find.
I believe you give the effort but only the problem is XML Error in your layout file.You give a wrong id or something like that.Because this also happened with me and finally i found the error in my xml file and when i fix that error and pressing CTRL and Key S.Eclipse builds the R file..!
I also suggest you to get the R file from project backup and again give a try.
always check your res folder first, if there is an error there, the build will fail, resulting to no generation of the gen files
There is some error in your Xml code.
What you have to do is find it and correct it. it may be any error like hwight and width not specified for some view.
once You have done it your R.jaav will be created just fine.
if still not so clean Your Project and recompile will do the Trick.
Since last night, Eclipse hasn't been letting me run any of my projects and gives me the error "Your project contains error(s), please fix it before running it".
This happens regardless of which project I use.
There are no code errors in any projects
There are no missing files (R.java, etc.) or folders (src, res, etc.)
There are no errors in the console (even on verbose) or the error log screen
I've cleaned all the projects, and each individual project many times
I've restarted ADB, Eclipse, and my computer
I have no idea what to do next, so hopefully its fixable.
NOTE: I am using Git, and this occurred after switching to my master branch to export a new update to one of my apps.
Thank you in advance! (:
Edit 1: I have also tried deleting and re-importing the projects before I posted this.
Click Window -> Show View -> Problems, that should show what exactly Eclipse thinks is wrong with your project. Sometimes you can simply delete the problem from that view, and Eclipse believes you everything is fine (yep, weird, I know).
Also, after you switch branches using an external source control tool (one not integrated into Eclipse through a plugin), Eclipse sometimes won't pick up all changes, you'd need to manually refresh the whole project file tree.
If nothing else helps, try setting up a new Eclipse workspace and importing your project there.
check your build paths - there could be jars and dependencies that are outside of the app that need to be opened or imported.
another trick is to edit an xml file, just change one word to intentionally cause an error, save the file, then change it back to proper syntax and save again. Error magically disappears.
another trick is to edit a java file, (cause error, save, fix error, magically error free)
I had this problem and I have fixed it. My issue was this:
I somehow managed to require another project in my build. That project had errors in it, which I believe is what caused the issue. I think this happened when I accidentally asked Eclipse to fix my build path or something when I was trying to fix a mistake. To correct this issue go to (on mac):
Right click on your project folder in the Package Explorer
In the menu, go to "Build Path"
Select "Configure Build Path"
Go to the "Projects" tab (along the top).
Is there anything in there? If there is and you weren't expecting there to be, select the project that is in that folder and hit "Remove"
This fixed the issue for me. Hope it helps.
I think you need to clean your project. Do project -> clean. Should work fine after that.
Try using Project->Android Tools->Fix Project Properties besides checking for your Android path. Check if your ANDROID_HOME and ANDROID_SDK are set correctly besides adding tools and platform-tools are set correctly in environment variable PATH.
Hope this helps!
Go to your .android folder and delete your debug certificate.
E:\Users\(your profile)\.android
Inside that folder there is a file name 'debug.keystore'. Delete that, clean and try to build the project again. Sometimes this error is caused when the certificate expires.
I found this answer here and it solved my problem ;-)
I think go to project ->clean some error can be solve this problem
Go to Projects in the menu bar
Then check the menu Build Automatically.
This helped for me.
My project has been running fine for weeks. I went to swap out an image today and suddenly eclipse highlighted my project saying it contained errors but did not point to any particular files. I then cleans the project and now it is bringing up the message
R cannot be resolved to a variable
The gen folder is empty and I have these errors now over all my src folder. Does anyone know what to do?
All help appreciated.
Your project has an error and can not build thats why Android compiler can not generate the R class and eclipse warns you about that class. Check out all problems in the problems view. Also check project runtime and library settings if there is anything missing. You might accidentaly delete a lib or java runtime might have been changed.
When I encounter this king of 'weird' issues with *.xml resources I add one more item. I case of strings.xml I add new item and that CTRL+S the project will be rebuild and the R class will be refreshed. This usually fix the problems, and afterwards I delete the item that I added.
There are a lot of times when eclipese doesn't rebuild until you add something new (that it , until you make a change in your resources)
I hope this will help you if not , it might help to someone else having similar problems
If you did not disable the built-in Source history in Eclipse (right click on a file in Explorer view, then select Replace With -> Local History), revert to the code prior to your change, and rebuild. If it builds, figure out what the change was and adjust accordingly.
If you don't have that history, try to remember from memory. Likely it can't build the R file because one of your XML resource file is incorrect or references the wrong file.