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jberkel / android-plugin

An sbt plugin for Android development in Scala
https://groups.google.com/forum/#!forum/scala-on-android
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"Unsupported version number [51.0] for class format". How to change target bytecode version? #102

Closed DaveGit closed 12 years ago

DaveGit commented 12 years ago

When I execute android:package-debug I get "Unsupported version number [51.0] for class format" How can I change this?

android:package-debug [info] Wrote C:\Users\Dave\android-test\target\src_managed\main\scala\androidtes t\TR.scala ProGuard, version 4.6 ProGuard is released under the GNU General Public License. You therefore must ensure that programs that link to it (scala, ...) carry the GNU General Public License as well. Alternatively, you can apply for an exception with the author of ProGuard. Reading program directory [C:\Users\Dave\android-test\target\scala-2.9.1\classes ] [error] {file:/C:/Users/Dave/android-test/}Android Test/android:proguard: java.i o.IOException: Can't read [C:\Users\Dave\android-test\target\scala-2.9.1\classes ](Can't process class [androidtest/R$attr.class] %28Unsupported version number [5 1.0] for class format%29) [error] Total time: 3 s, completed 12-dec-2011 2:32:08

DaveGit commented 12 years ago

I know the answer: Proguard 4.6 does not work with jdk7. Made a new issue.