I am attempting to run a Hello World example from the following tutorial: https://mva.microsoft.com/en-US/training-courses/xamarin-for-absolute-beginners-16182
I am receiving the following error:
Severityjava.lang.UnsupportedClassVersionError: com/android/dx/command/Main : Unsupported major.minor version 52.0 HelloXamarin.Droid
I have tried many combinations of JRE/JDK versions. I am uninstalled them, reinstalled them. I have tried JDK 7 and JDK 8. I keep getting this same exact no matter what combination.
You can follow this blog to resolve it https://agilehobo.wordpress.com/2016/08/24/2-ways-to-resolve-unsupported-major-minor-version-52-0-when-building-xamarin-android-app/
The solution not involving using Visual Studio IDE (i.e. build servers) is to import the following key to the registry after installing JDK version 1.8.0_101:
Windows Registry Editor Version 5.00
[HKEY_CURRENT_USER\SOFTWARE\Novell\Mono for Android]
"JavaSdkDirectory"="C:\\Program Files (x86)\\Java\\jdk1.8.0_101"
Don't forget to clean/update sdks.cache files in obj[Release|Debug] directories to reference the correct version of jdk.
For the reference here is a complete list of paths used by Mono for Android:
Windows Registry Editor Version 5.00
[HKEY_CURRENT_USER\SOFTWARE\Novell\Mono for Android]
"AndroidNdkDirectory"="C:\\ProgramData\\Microsoft\\AndroidNDK\\android-ndk-r11c"
"AndroidSdkDirectory"="C:\\Program Files (x86)\\Android\\android-sdk"
"JavaSdkDirectory"="C:\\Program Files (x86)\\Java\\jdk1.8.0_101"
I had a similar issue when Xamarin.Android project was moved from Xamarin Studio (Mac) to Visual Studio 2015 (Windows 10).
I resolved this issue after JDK 1.8.0_121 (for Widows x64) installation.
It worked also for me ONLY changing the registry entry
