Class module-info is missing a super type

[generosocarbone]

• OS and version used: Android (min api 23)

• Java runtime used: 1.8.0_152-release

• SDK version used: 1.13.2

Description of the issue:

I am trying to build an android application and I get a compilation error due to an API version constraint.

Console log of the issue:

AGPBI: {"kind":"error","text":"Illegal class file: Class module-info is missing a super type.","sources":[{"file":"/home/generoso/.gradle/caches/modules-2/files-2.1/org.apache.logging.log4j/log4j-api/2.11.0/bede79a3f150711634a3047985517431bf6499f2/log4j-api-2.11.0.jar"}],"tool":"D8"}

AGPBI: {"kind":"error","text":"MethodHandle.invoke and MethodHandle.invokeExact are only supported starting with Android O (--min-api 26)","sources":[{}],"tool":"D8"} com.android.builder.dexing.DexArchiveBuilderException: com.android.builder.dexing.DexArchiveBuilderException: Failed to process /home/generoso/.gradle/caches/modules-2/files-2.1/org.apache.logging.log4j/log4j-api/2.11.0/bede79a3f150711634a3047985517431bf6499f2/log4j-api-2.11.0.jar

Now, my problem is that I'm bound to the API version 23/24/25 and I need the fix for the SocketTimeoutException

[JMayrbaeurl]

That's coming from the missing full support for Java 8 language features in Android. For details see https://developer.android.com/studio/write/java8-support . Especially MethodHandle.invoke needs Android's min sdk API version 26 to work correctly. Obvisouly log4j v2 uses this method if you're running it on a Java 8 VM. In my opinion this is really tricky, because as soon as library like log4j recognizes it's running on Java 8, it will use existing Java 8 features like the MethodHandle class.

[generosocarbone]

[Update] just for a matter of completeness, I updated my min api to 26, but still the
"Illegal class file: Class module-info is missing a super type." issue persist.
I tried compiling with both Java 8 and 9.

Environment:
Java runtime used: openjdk version "9.0.4"
OpenJDK Runtime Environment (build 9.0.4+11)
OpenJDK 64-Bit Server VM (build 9.0.4+11, mixed mode)

Java runtime used: openjdk version "1.8.0_152-release"
OpenJDK Runtime Environment (build 1.8.0_152-release-1024-b01)
OpenJDK 64-Bit Server VM (build 25.152-b01, mixed mode

Android Studio 3.1.4
Build #AI-173.4907809, built on July 23, 2018
JRE: 1.8.0_152-release-1024-b01 amd64
JVM: OpenJDK 64-Bit Server VM by JetBrains s.r.o
Linux 4.13.0-46-generic

module-info-missing-supertype.txt

[jasmineymlo]

@generosocarbone, we have recently catch up on supporting Android. If you are still having the above issue, checkout our our updated sample which minSdkVersion 23. Our quickstart guide for your reference. Feel free to let us know if you have any issue.

[generosocarbone]

@jasmineymlo the issue is gone since one of the last updates, I don't remember which.

[jasmineymlo]

Good to know. Thanks

[az-iot-builder-01]

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