I had an working Android project on Eclipse Mars and I wanted to add a Maven dependency. I followed some tutorials and successfully converted the project into a Maven project by using "Install New Software" for m2e, "Eclipse Marketplace" for android-m2e.
Now, I wanted to RUN the project, but all of a sudden, "run as Android Application" setting has been removed. When I tried to run as saved configuration (android application), it says "myprojectname is not an Android Project!".
I'm trying to make this work but for the whole day I'm stuck and can't figure it out :( I wish I committed the change right before I did this ..
Thank you in advance.
Solved it by myself, but I'm leaving this thread to people who might encounter similar problem.
What I did
removed both m2e and android-m2e from eclipse.
removed the project from Project Explorer in eclipse (IMPORTANT: DO NOT SELECT "DELETE PROJECT CONTENTS ON DISK(CANNOT BE UNDONE)" UNLESS YOU MEANT TO DO IT)
File->New..->Other->Android->Android Project from Existing Code -> select your project
Now I have my project generating "gen" correctly.
Hope this solves someone's problem.
After I left my Computer in standby, Eclipse (Android SDK Plugin) told me that it cannot save the project (because my NAS has to start up). But then I saw the project structure was failed like you can see here. Before it was like this (example from another project). I tried restarting Eclipse and importing the project again. How can I change it back?
Give a try these steps from menu option:
Project > Clean
once its done build the project
Project > Build All
Hope it fixes your problem.
I am facing a problem when I try to create new android project in eclipse adt plugin tools.
ERROR/EXCEPTION::
Errors occurred during the build.
Errors running builder 'Android Resource Manager' on project 'test'.
java.lang.NullPointerException
I have faced this problem two times previously. Only solution was to re-install Windows operating system which actually did solve the problem. But I want a real solution without re-installing Windows.
Switching to a new workspace worked for me.
File-> Switch Workspace.
found a better solution. in the create project wizard. don't create an activity in the wizard. just untick create an activity and just create the activity manually in the manifest.
I guess you upgrade your java to java7u55.
because I am using mac, but, FYI
I solve this by edit eclipse.ini, force the ide to use java 1.6
-vm
/System/Library/Frameworks/JavaVM.framework/Versions/1.6.0/Commands/java
you could try the same.
In my case, the error was solved by changing the workspace folder permissions with chmod 777.
I am using Mac OS X and downloaded the ADT bundle for Mac.
If you close eclipse and then look in your system processes and still see adb running, then that's the problem - it crashed. In my case it was because I have extension files for other programs in my JRE that the adb doesn't seem to like. Remove all your ext files, force shut down your adb.exe and then restart eclipse.
Root exception:
java.lang.NoClassDefFoundError: org/apache/log4j/Priority
Usually this means that they have one more time introduced a bug.
The "magic passes" that may help or not help are:
Pressing F5 (refresh)
Updating Android, Eclipse and ADT (knowing that you do have such a problem, I myself definitely will not do any such updates in the near future)
Creating a project from the command line, building it and trying to import
If you have any project that already works, you may try to take files from that project.
Read the logs, they are usually more informative than just the last 30 lines, but on Windows you will have to either configure the screen buffer height to be about 300-600, or redirect the output to a file.
Clean and build again.
You usually get this after an SDK/ADT update.
Go to your SDK manager and ensure that there are no updates. Then in Eclipse go to Help > Check for Updates and install any updates it finds.
Restart eclipse and hopefully it should all work.
Failing that uninstall Eclipse and re-install Eclipse and the plugins again should fix it as well, no need to re-install your whole PC.
I use maven to build and integrate android projects with jenkins/netbeans. For editing android resources, I often use Eclipse because of the ADT plugin and better android resources support.
Eclipse (Kepler) has serious problems when you import maven-based android projects. It expects the project.properties file in the root folder and will NOT generate it on its own no matter what. Example content:
# this file is needed by eclipse (adt plugin).
# Project target.
target=Google Inc.:Google APIs x86:19
Additionally, create a sym link called "gen" pointing to target/generated-sources/r if using maven to build the android project on the command line. That way, you should be able to do "File->Import...->Existing Android Project". You get an error message, but it didn't matter in my case.
Additional hints in case you have problems with m2e-android plugin:
always check that the output folders for source dirs and resource dirs are correct.
check that source dirs are set as source dirs (you usually get a corresponding warning)
if resources from dependencies are not included in the final apk, check the filter settings for your resource dirs
you may need to "import maven project from existing sources" before importing it as android project from existing sources.
make sure dependencies are imported into the workspace and open and referenced (project props -> android -> add lib)
eclipse adt does not support aar libs, use apklib instead
It can happen if you are changing the location of files that your
eclipse project uses.
In that case you can copy the files directly to your resources folder inside the workspace instead of linking them with "import"
These simple steps put me out of this trouble -
In Eclipse, Help menu -> Check for Updates.
Select all Android related plugins.
Click Next, Accept the agreement page then proceed to install the
plugin.
Make sure your java path points to the java SDK bin directory.. make sure you have installed the latest JDK t be safe..
You can also try one of these:
Close and open the project in Eclipse
Click right on the project and choose: Android Tools -> Fix Project Properties
I beat my head against a wall for a day because of the same problem. My solution (OS X): I had a stale "java_home" definition in my profile pointing to a dead symlink, as well as old classes in /Library/Java/Extensions. I removed the definition and symlink, along with two classes in Extensions (ActiveMQ and Geronimo, FWIW) and the problem went away. Not sure which step was the actual "rectifier" but if any of those conditions apply, you might want to check them.
I faced same problem on my New Macbook Pro so I just Downloaded JDK and installed it and problem fixed.
I was experiencing the same issue - I refreshed and updated Eclipse and Android plugins and was still seeing the NPE. What worked for me was changing the order of operations.
In order:
1. update Eclipse & Android plugins
2. after the update has completed, perform the F5 Refresh in the current workspace
Make a copy of your project in Explorer/Finder. Delete the project in ADT/Eclipse. Import the project again using Eclipse. Project/Clean then build. This works for me.
I have tried every solution I found on the web and they did not work.Then I remember java version on my Mac was 1.7 and I have installed subversion version 1.6 and the problem occured after that installation.Also I have deleted eclipse and used a clean eclipse and Android sdk installation I still got the problem, then I uninstalled the JDK 7 as it is told in here http://docs.oracle.com/javase/7/docs/webnotes/install/mac/mac-jdk.html and my problem is solved.
I have several projects in my folder. Every time I start a new one I close the others. I got this error because appcompat_v7 was closed.
Right click on appcompat_v7 and select Open Project.
This solved my problem.
Solved after changing a setting in eclipse.ini. I am using OS X 10.11.4 and Eclipse Mars 4.5.2.
Go to the folder of Eclipse.app in Finder.
Right click to open a menu, and click Show Package Contents.
Go to /Contents/Eclipse.
Open eclipse.ini in your favorite text editor.
change -vm path like below:
BEFORE: /Library/Java/JavaVirtualMachines/jdk1.7.0_79.jdk/Contents/Home/jre/bin
AFTER: /Library/Java/JavaVirtualMachines/jdk1.8.0_73.jdk/Contents/Home/jre/bin
reopen Eclipse.
enjoy :D
I am just starting to learn Libgdx, and am in the process of importing the 4 projects[desktop, main java game, android, html] into Eclipse Juno. I have not added any lines of code, just trying to get them to run on the different platforms.
It runs fine on the desktop version, but when I tried to run it in the Android emulator I get the error. Cannot find mygdxgame.apk!
I realized that my gen folder is completely empty, there is no R.java for the project. I have tried a number of things to make this work, but none of it is working. I am listing the things I have tried so far, and the hopefully the reason why I am asking this repeatedly asked question.
Project > Clean
Package Explorer [right click on my project] > Android Tools > Fix Project Issues
Deleted gen folder and Project > Clean
Restarted Eclipse
Deleted the project and Imported it again
Set Compiler Compliance Level to 1.6 for both main java game and Android project
Added a dummy XML to the android project and tried clean, and deleted it
Unchecked and rechecked Build Automatically
Checked my target-sdk in project.properties and made sure it is the same Project Properties -> Android and in my Manifest.xml
[Right click on project] > Properties > Java Build Path > Source tab, Removed mygdxgame/gen folder and then added it again
Made sure Project Properties > Android > Is Library is unchecked
Nothing has worked so far. My gen folder is still empty and I am unable to run the Android project because of the same error. Cannot find mygdxgame.apk!
What else can I do to fix this? In case this is answered I would appreciate someone giving me a link to the solution, as I have been pouring through SO and Google in general for nearly 2 hours now, with no success.
Regs
What happened to me a few days ago:
1.- I got the SDK Tools 22 update and I installed it, no other update appeared in my sdk manager... so I closed it.
2.- Then I got that "NO APK" error and tried every answer I could find.
3.- I opened SDK manager again, and I noted SDK Platform Tools also got an update and there was a new one: SDK Build Tools. Both of them didn't show up when I first updated the SDK Tools.. so.
ANSWER:
Open SDK Manager and check if your SDK Tools, SDK Platform Tools, SDK Build Tools are updated :)
On your build path, you should have a reference to the main project, under Projects tab of Java Build Path. Under Libraries, you should have gdx-backend-android.jar and gdx.jar along with Android not being a library.
Please check if Android is set as a library. If so, uncheck it. To do that, right click on the project and then select Properties. Choose Android on the left panel of the new window. Uncheck Is Library if checked.
Here's something might help-
Unable to run Android app, Could not find .apk issue in eclipse
I would take alook at your buildpath if all libs are correct. If it's a projekt from an other computer the libs are often at different places so you need to correct those manual. If they are not correct the android projekt do not generate your R. class and so on. So do rightclick on the core projekt -> Buidl Path -> Configure Build Path. Now take a look at the libs if all are there. I had the same issue with the android 15 apk so i need to add it manual. The clean or such do not fix such because eclipse can't know where you have all your libs.
If you really dont get it run i would recoment to use the setup ui of libgdx. It does noramlly handle all imports and so on for you. You can also use it to update your current projekt and so on.
Else i would read the guide for Manual Project Setup of Libgdx.
Libgdx setup Guide
I hope this does fix it.
I am having a weird problem with Eclipse.
Some days back, I completed a project with the name IntelligentAlarm, and then pushed it to github. I was using Eclipse Indigo then. After that I formatted the system, and downloaded Eclipse Juno. I cloned this repository from github, and imported this project into Eclipse as an android application.
But now, I am unable to run it as an android application. The option which allows you to run it as an android application is missing. Neither can I create a new Run Configuration for this project, as I don't see this project in Browse window.
I should add that I am able to run newly created android projects.
What should I do ?
If you formatted your hard disk your workspace is gone. This means you have to import your cloned project into Eclipse (Import existing Android project into workspace). This adds your project to the newly created workspace. After that, if will be shown in your IDE as usual.
It might be that you have still some things to do, for instance downloading the SDK platforms and creating an emulator.
After this you should be able to run your program as an Android project.
I would re-do the android app setup configuration in Eclipse again and see if the
Run > As an Android App
option comes back.
Setup Eclipse form scratch to enable Android Development Environment. enter link description here
Then create new project from your existing code. Since you exisitng eclipse project will have the properly files it will enable any old properties.
Hope you have your old workspace.
Quick Solution: *You can try deleting the .metadata folder under workspace folder which can recreate the .metadata folder for you when restart the eclipse*