Error when compiling Android

Question

Hello everyone,

I'm running Unity 4.6 in OS X 10.9.5, and I'm getting the following error when I try to compile to android:

 Failed to compile resources with the following parameters:
 -bootclasspath "/Users/ines/Development/android-sdk-macosx/platforms/android-21/android.jar" -d "/Users/ines/Documents/Game/Temp/StagingArea/bin/classes" -source 1.6 -target 1.6 -encoding UTF-8 "com/Company/Game/R.java" "com/facebook/android/R.java"
 warning: java/lang/Object.class(java/lang:Object.class): major version 51 is newer than 50, the highest major version supported by this compiler.
 It is recommended that the compiler be upgraded.

Does anyone know how I can solve this problem?

Answer 1

Best Answer

Answer by Nesokas · Oct 22, 2014 at 02:21 PM

Thank you guys. I've found the solution.

Steps to make this work:

Set the JAVA_HOME environment value:

export JAVA_HOME= ` /usr/libexec/java_home `
Add the java bin folder to the PATH variable:

export PATH=$JAVA_HOME/bin:$PATH
Create a link in the following directory:

sudo ln -nsf /Library/Java/JavaVirtualMachines/jdk1.7.0_45.jdk/Contents \ /System/Library/Frameworks/JavaVM.framework/Versions/CurrentJDK

And that's it. Hope it helps.

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emils72 · Oct 22, 2014 at 08:56 PM 0

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Thank you very much Nesokas!!! It worked like a charm to me!!

warchild14 · Oct 24, 2014 at 01:11 AM 0

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I am using OSX 10.10 and JDK1.8.0_25. I had to use the command:

1- export JAVA_HOME=`/usr/libexec/java_home -v 1.8` 2- export PATH=$JAVA_HOME/bin:$PATH

but at the 3rd step I get: /System/Library/Frameworks/JavaVM.framework/Versions/CurrentJDK: No such file or directory

My error is because I updated the Android SDK... I guess I should target a specific folder that I am missing here. :~~

Nesokas · Oct 24, 2014 at 01:20 AM 0

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Try locate the java home directory manually

open /Library

try to navigate the folders until you find java home. Then copy the path and do:

export JAVA_HOME="path_you_copied"

Hope you can solve it ;)

warchild14 · Oct 24, 2014 at 01:39 AM 0

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Thank yooouuu, girl. You rock. I found the folder /System/Library/Frameworks/JavaVM.framework/Versions/CurrentJDK, and yeah, the CurrentJDK link was pointing to 1.6.0

I manually made an alias of the folder /Library/Java/JavaVirtualMachines/jdk1.8.0_25.jdk/Contents as "CurrentJDK" and placed it /System/Library/Frameworks/JavaVM.framework/Versions/CurrentJDK

worked! :D

Somehow terminal was not finding the folder. :~

Tnks, again. :~~

obs: cannot thumb up your answer because I have not enough reputation D:

noosxe · Nov 01, 2014 at 12:02 AM 0

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This really helped, thanks!

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Answer 2

Answer by saranpol · Nov 12, 2014 at 07:55 AM

For people who doesn't have new JDK version

download JDK of mac os x : https://jdk8.java.net/download.html
sudo ln -nsf /Library/Java/JavaVirtualMachines/jdk1.8.0_40.jdk/Contents/ /System/Library/Frameworks/JavaVM.framework/Versions/CurrentJDK

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sametkaya · Nov 24, 2014 at 01:55 PM 0

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Thank you very much.

I've tried everything but nothing work.

your idea help to solve my problem.

thank you!

Fliperamma · Jan 09, 2015 at 07:10 PM 0

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Thank you!

sajornad · Apr 02, 2015 at 02:22 AM 0

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Perfect solution! Thanks!!

Answer 3

Answer by liortal · Oct 22, 2014 at 06:09 AM

It probably means Unity is running a Java compiler of some version and a JRE of a different (higher) version.

The compiler complains that it can only support version 50, but you are using version 51.

Check whether you have multiple Java installations on your machine, and the environment variables that you set.

Either leave only 1 installation, or make sure that Unity will use the correct JDK and JRE by setting the environment variables correctly.

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Yury-Habets · Nov 24, 2014 at 04:42 PM 0

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Starting from Android 5.0, Google requires Java 1.7. We are updating Unity requirements to match it (currently it is 1.6).

liortal · Dec 11, 2014 at 10:34 AM 0

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What does that mean? I have all android platforms and tools installed (up to the latest 5.0). I am on Unity 4.5.4 is it compatible ?

Yury-Habets · Dec 11, 2014 at 02:22 PM 0

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It is. But as stated in http://unity3d.com/unity/system-requirements - you also need JDK installed. Now minimum requirement for JDK version is 1.7, you can check it by running "javac -version".

liortal · Dec 11, 2014 at 02:28 PM 0

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I have JDK 1.8.0.25 installed. When building my Android project it fails for this error (compiler is 51). When i go to Android SDK and rename the folder platforms/android-21 to platforms/android-dont-21 it works fine.

Yury-Habets · Dec 11, 2014 at 04:07 PM 0

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I assume you double checked your JAVA_HOME and PATH variables, and ran the command I mentioned earlier. In this case please drop us an email with your editor log or submit a bug.

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Answer 4

Answer by deadfish90 · Oct 31, 2014 at 09:43 PM

After upgrading my Android SDK version, I was having this error. I followed all the steps outlined for changing default Java version, environment, etc. I installed newest version of JDK (8), still nothing. I found that I needed to uninstall JDK 6 as final step to get everything to work again.

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Error when compiling Android

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