I have looked at other questions from people with the same error but it seems like my error has a different cause, and the culprit seems to be unity ads. when I try to build for android, it fails and says “unable to convert classes into dex format, look at the console for more info”. and in the console I have the following two errors:
CommandInvokationFailure: Unable to
convert classes into dex format. See
the Console for details. C:\Program
Files\Java\jdk1.7.0_79\bin\java.exe
-Xmx2048M -Dcom.android.sdkmanager.toolsdir=“C:/Users/Ashkan/AppData/Local/Android/sdk ools”
-Dfile.encoding=UTF8 -jar “C:\Program Files\Unity
5.3.4\Editor\Data\PlaybackEngines\AndroidPlayer/Tools\sdktools.jar”stderr[ Exception in thread “main”
java.lang.UnsupportedClassVersionError:
com/android/dx/command/Main :
Unsupported major.minor version 52.0
at
java.lang.ClassLoader.defineClass1(Native
Method) at
java.lang.ClassLoader.defineClass(ClassLoader.java:800)
at
java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at
java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
at
java.net.URLClassLoader.access$100(URLClassLoader.java:71)
at
java.net.URLClassLoader$1.run(URLClassLoader.java:361)
at
java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at
java.security.AccessController.doPrivileged(Native
Method) at
java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at
java.lang.ClassLoader.loadClass(ClassLoader.java:425)
at
java.lang.ClassLoader.loadClass(ClassLoader.java:358)
at java.lang.Class.forName0(Native
Method) at
java.lang.Class.forName(Class.java:274)
at SDKMain.main(SDKMain.java:127) ]
stdout[] UnityEditor.Android.Command.Run
(System.Diagnostics.ProcessStartInfo
psi,
UnityEditor.Android.WaitingForProcessToExit
waitingForProcessToExit, System.String
errorMsg)
UnityEditor.Android.AndroidSDKTools.RunCommandInternal
(System.String javaExe, System.String
sdkToolsDir, System.String
sdkToolCommand, Int32 memoryMB,
System.String workingdir,
UnityEditor.Android.WaitingForProcessToExit
waitingForProcessToExit, System.String
errorMsg)
UnityEditor.Android.AndroidSDKTools.RunCommandSafe
(System.String javaExe, System.String
sdkToolsDir, System.String
sdkToolCommand, Int32 memoryMB,
System.String workingdir,
UnityEditor.Android.WaitingForProcessToExit
waitingForProcessToExit, System.String
errorMsg) UnityEditor.HostView:OnGUI()
and the second error is :
Error building Player:
CommandInvokationFailure: Unable to
convert classes into dex format. See
the Console for details. C:\Program
Files\Java\jdk1.7.0_79\bin\java.exe
-Xmx2048M -Dcom.android.sdkmanager.toolsdir=“C:/Users/Ashkan/AppData/Local/Android/sdk ools”
-Dfile.encoding=UTF8 -jar “C:\Program Files\Unity
5.3.4\Editor\Data\PlaybackEngines\AndroidPlayer/Tools\sdktools.jar”stderr[ Exception in thread “main”
java.lang.UnsupportedClassVersionError:
com/android/dx/command/Main :
Unsupported major.minor version 52.0
at
java.lang.ClassLoader.defineClass1(Native
Method) at
java.lang.ClassLoader.defineClass(ClassLoader.java:800)
at
java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at
java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
at
java.net.URLClassLoader.access$100(URLClassLoader.java:71)
at
java.net.URLClassLoader$1.run(URLClassLoader.java:361)
at
java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at
java.security.AccessController.doPrivileged(Native
Method) at
java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at
java.lang.ClassLoader.loadClass(ClassLoader.java:425)
at
java.lang.ClassLoader.loadClass(ClassLoader.java:358)
at java.lang.Class.forName0(Native
Method) at
java.lang.Class.forName(Class.java:274)
at SDKMain.main(SDKMain.java:127) ]
stdout[]
even when I start a new project with only the unity Ads enabled, I still get the same error when I build for android. I don’t have a problem with iOS. only android. I have looked into those directories that the error points to but I really don’t know what I am looking at there or why those directories cause a problem.
I have tried it with both unity 5.3.4 and 5.3.5 to no avail.
any help would be greatly appreciated.