I have a problem with Eclipse. When I want to start a new android project I only get xListFragment.java in my source folder. So, I'm missing the other 3 java files( detailActivity, DetailFragment, and ListActivity). I have reinstalled eclipse 3 times and updated and istalled all programms from scratch but still haven't got those files. If someone has an solution then please help me.
Best.
Until someone has a definite solution to post, here's a workaround. I had the same problem with Eclipse and the master-detail project. I tried multiple times creating the project and had those missing classes each time. To workaround the problem, I created a master-detail project in Android Studio and copied over the missing classes and some bits of XML.
Related
So I am in a personal study class in high school to prepare for college. Right now I am just starting the DS Malik Java textbook. I tried to set it up with Oracle Oxygen, but I cannot get it to work. I have only worked in Android studio prior to this and I cannot for the life of me figure this out.
I have tried the steps from this link -> How can I avoid this Ant Build error?
I created a new project and imported it to the SRC folder like it said, I am not sure what it means by compliling, I think it means run and it still wont run. Now it just says it is unable to run.
I just am still lost. I cannot figure out how to create a project that I can run the files in for this textbook. IF any of you want to try it out before you reply since I know I am not being very forthcoming on details, there really aren't much I can say. But the source code is available online if you google it it will be there.
Thank you all for your help.
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..
I'm creating a clean project on ADT and I noticed that the gen folder is empty (with no R.java in it), not letting me run the project. I'm running ADT with all stuff up-to-date (as you can see here)
I already cleaned and built it in every possible way. I also tried to reimport the project, and nothing. There are no errors in the XML files.
I searched for a solution and I found a lot of people with the same problem, and in most cases the solution was to update the SDK tools, but it didn't work for me.
Is there a reason for this?
at the top of screen, click build -> rebuild project
Give it a few seconds. it worked for me, i hope it save you aswell
im using Android Studio(beta) 0.8.9
My R disappeared after i fiddled with sound files in my res/raw directory(converted them to different formats, figuring out how SoundPool class works...and suddenly there is red "R"'s everywhere!
Try right clicking on the project, then going to Android Tools > Fix Project Properties.
If that doesn't work, then try cleaning it before and possibly after that.
If R.java disappears, you usually have to recreate the project from scratch again.
There are many reasons for R.java missing issue, i use to face this issue frequently, some of my thoughts to debug this issue.
Try creating another test project using File->New->Project->Android->Android Application Project. After creating the project run the project in emulator. If every thing works then your setup is perfect.
Check your imports section of your java files, some times default R.java gets included which is from android package. In this case Remove that import and add correct import statement.
Check your "res" folder all the xml's should be well formed and valid.
Hope these debugging steps may help to find the root cause.
try deleting the r.java file in gen folder. when you run again after cleaning and building the project. It should recreate those files and it should work after that. Try that.
Other wise you might have to reinstall Eclipse as you have tried in so many different projects
Something I just noticed was that after I removed the auto-generated code for the menus (which I wasn't using) it started causing errors. Eventually when I cleaned with the menu xml's still in the file structure, my R file disappeared. I removed all entries in the menu folder and then cleaned again. This worked for my specific instance. Hope this helps others as well.
I've tried everything i can think of and i still can't get the R.java file to show up.
It's supposed to be in the "gen" folder in eclipse when i create a new project i believe.
I tried the following:
I went to Project > Clean...
I heard that there might be issues in the xml files, i couldn't find any errors there.
I tried using both android 2.1 and 2.2(my goal is to program in 2.2 but i tried both anyway).
Please help. I've seen a few other questions regarding the same issue on here; i've tried using the suggestions found in the answers to those questions but unfortunately, no luck.
Progress: 1
SOLVED: I found out i was missing Android SDK Platform Tools. If you're having the same problem, make sure you have it installed.
Go to Window > Android Sdk and Avd Manager > Available Packages > Android Repository > Android SDK Platform Tools(the latest version) > Install. Sorry for causing any confusions. I will one-up those who put some effort into helping me. Thank you very much for your efforts. :)
Try a right-click on the project and select "Refresh". This usually does the trick for me when "Clean" does not.
you shall find the answer here..tat works for me. just try...
R file is missing android
I have faced the same problem many times untill and unless u wont remove errors from ur
xml file or any java file.
Then clean uo ur project....
Cleaning of project wont work in case there is errors,plz check for the same
if above option not working then try project->built automatically checked then clean project then try to run it