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I have just created an android project in android studio 1.2.1.1 but it says cannot resolve R. I have not changed the manifest or the xml which are usually responsible for that problem.
I'll post the answer for anyone finding it useful, in the end i just had to update the sdk manager to 22.0.1 and change the gradle build tools version to the latest meaning the one i downloaded
Try to build or clean project. It always occurs after create new project because R is generating at build process not while creating project.
Its also happens when you dont have necessary support files..
Check the error log, it should be showing some kind of error that will help you to resolve the problem..
Check if yours xmls are ok,you can have bugs there.
Also try clean the project or build it again.Other solution can be change something in your code and build.
R.java is a file that regenerate, so you can close Android Studio, delete R.java and open it again.
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I am currently 3 months+ into programming and am trying to build an android app that takes data from Quandl.
How do I import the Quandl library into my Android project? I have tried to search for answers - they typically tell me to add the .jar file, but there is no .jar file in the Quandl library here (taken from the link below).
https://github.com/jimmoores/quandl4j
Will really appreciate it if someone posts a step by step guide for a noob beginner like me.
The answer is in the link you have provided:
https://github.com/jimmoores/quandl4j.
Look at Quick Start section. You have four options.
You can download zip. There is source code inside. You should unzip this archive and then use maven to build jar file. Go to main directory, where pom.xml file is and execute mvn install. If build is successful then jar file should be in target directory.
If you are familiar with git you can clone repository and as previous crate jar with maven (mvn install).
You can use maven to add dependency to your project automatically.
You can use gradle, another tool that automates process of building dependency.
Generally speaking: you are new to programming, spend some time learning about maven, because this tool will help you a lot in your career.
https://maven.apache.org/
After reading this answer please remove this question, because it has a little value for community.
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I had to configure a 'JavaMysqlConnectorApp' project to JPA project on Eclipse.
But when I revert changes manually to back earlier project on Eclipse, it shows error icon on project explorer.
Please find two image links where shows detail about problem.
Here is error icon on project
Eclipse bottom 'problem' tab shows why error icon showing on Project
How to convert jpa project to normal java project(without JPA) on Eclipse?
Thanks in advance to all.
Ok I find the way...
Followed the following steps to back java project from JPA project :
click to the project properties
find the 'Project Facets' bellow 'Maven' on left side of the properties window.
unchecked the 'JPA' on project facet ( I don't need JPA in mine project anymore )
save all changes
Then cleaning project and find no more error icon on mine project.
This link shows you the lucid view !
Cheers. Thanks to all for your valuable suggestion.
One click away.
On the top right corner you can easily choose perspectives, just choose any other than JPA.
I'm not in front of Eclipse now, but if i recall correctly there should also be a context menu on project right click, named "JavaEE Tools" where you can permanently turn off JPA on this project.
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When I am importing a project into eclipse, I get this error:
Errors occurred during the build.
Errors running builder 'Android Resource Manager' on project
'android.app.NativeActivity'.
java.lang.NullPointerException
Does anybody know how to fix it?
This issue is predominantly caused by issues with the project.properties file. This post should help you resolve the issue:Mac Error Create Android Project - "Errors running builder 'Android Resource Manager' on project"
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Closed 10 years ago.
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Developing for Android in Eclipse: R.java not generating
Im using Ubuntu 12.04 with Eclipse Indigo (I downloaded classic, and it poped up with that on the splash screen, so I guess thats it). I am trying to use the Android SDK with it. I downloaded all the SDK's possible from the interface, then added the Eclipse plugin. I created a project to mess around with Android stuff, and there are two errors. One error I fixed. The other was something like, "R.java does not exist". I Googled it, and found other Stack Overflow questions similar to this one. I made a new one, because all the answers to the other questions didnt work. I tried cleaning my workspace and my project, I tried reinstalling the plugin and the SDK. Nothing worked. Is there anything Im missing to have Eclipse generate R.java? I am also using the 32-bit version of Ubuntu, if that makes a differece.
You failed to actually include any code in your question, so we cannot help to verify whether or not it is correct.
Assuming your Java code is correct, most likely your cause is an error in a resource or your AndroidManifest.xml file that is preventing R.java from being regenerated. To figure out what is going on:
Look for red X marks in the Package Explorer for resources or the manifest
Look in the Console for error messages
Look in the Problems view for error messages
Try the following to see if it helps
right click on the project
select Android tools
select Fix Project Properties
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I've been using the Eclipse references (Ctrl+shift+G) for sometime now. I notice that Eclipse misses finding some references sometimes. Is there something I must configure to get this working correctly?
Your problem may be related to issues concerning Eclipse's CODAN indexer. Try to rebuild the index by clicking [Project Explorer] > Index > Rebuild. Goto Eclipse > Preferences > C/C++ > Indexer and check if your indexer is setup correctly...
I just sorted out a similar-sounding problem.
In my case I was mistakenly ending up with a project->JAR dependency rather than a project->project dependency.
This involved a specialized import of a set of Java-based projects, with logic to
set up a project->project dependency if possible and a project->JAR dependency if
the source was unavailable.
(This wasn't using Maven but from what I know of Maven<->Eclipse integration I could
imagine this happening in a similar case).
So typically I get a project->project dependency but I had messed something up in my filesystem so I ended up with a project->JAR dependency without realizing it...and Ctrl+Shift+G stopped working.
This happened to me working with a Java/Maven project just recently as well. The version of Eclipse was Neon.3 Release (4.6.3).
Rebuilding the projects using Project -> Clean... did not help. The solution was to close and then reopen the projects. After that, the call hierarchy was correctly calculated again.
There's a long standing open bug for this issue: https://bugs.eclipse.org/bugs/show_bug.cgi?id=108749
In my case I have imported two maven projects to eclipse. One was depending on another and references in dependent project were not found. I have right clicked on dependent project choose preferences->java build path then removed dependency from Libraries tab and added same dependency to projects path. Of course I had to have both projects in workspace.
Ensure that your project is of the type expected. My similar symptom turned out to be because the eclipse project had been recently re-imported as a general project. Once I realized that and converted it to a C/C++ project, find references again worked as expected.