JDK 11 support

Starting API 31, JDK 11 is a requirement due to addition of new annotations used by some of the dependencies.

If I try to target api 31, it fails with the below error

Code (CSharp):

1. java.lang.AssertionError: annotationType(): unrecognized Attribute name MODULE (class com.sun.tools.javac.util.UnsharedNameTable$NameImpl)

If I unselect unity's recommended openJDK and try to use system's JDK 11, its not picking it up. Unity still fails saying jdk 1.8 is being used.

When I try to set Jdk 11 path from external tools in unity preferences, its throwing an error saying Unity don't support other than JDK 8/1.8

@JuliusM @Yury-Habets Do you guys have a list of unity versions which support JDK 11?

 

My question is 'Why is this information located in the 2022.2 when it should be in the other version docos.'
I didn't look there or here before as I am not in those versions and this answer came far into the failure chain I am experiencing by upgrading to 2020.3.30f1, and all the DKs. The analysis process in finding the fix leads one into myopic searches where one can not even entertain looking outside the box or newer versions(because logically they shouldnt apply) or deciding not to chase squirrels down the rabbit holes.
I also have 5 projects that I have to repair for APK push that fixing breaks another and the spiral decline never seems to stop add to that any VR headset issues. I have been in the habit of pushing my Andy apks to Oculus to test because that is where the community is going and it is a great debug and UX test.
I will use the answer here to attempt to make headway into my latest debacle and report back. The internet is rife with apk effort failures and probably because I see a lot of posters not prefacing their build posts all software versions, i.e. Unity, Android, Gradle, DKs, Machine platform, OS's and the like. Having to look at future documentation presents a whole other nightmare when in a production failure/ crunch at testing or distribution time.

The greatest piece of advice is when starting up a Unity project create an Oracle VM and put everything in there and lock it down when the project works. If you need to upgrade then copy the VM and try the work in there. Source versioning is not the answer to this DK debacle as the platform across the machine type was altered.

 

Thanks for the response @JuliusM

Can you please confirm if there is any way to make builds with target api as 31 on versions lower than Unity 2022.2?

There is actually lot of confusion regarding this. I even made builds earlier on 2019.4+ with target api as 31. But recently I see one main error regarding MODULE annotation attribute which is only available in jdk 11.

As a plugin publisher, we need a clear info on which versions api 31 works so that we can plan accordingly. If jdk 11 is supported only on 2022, what about older LTS versions for targeting api 31+? Will they be backported by any chance?

 

The required compiler options already exist. But until I install JDK 11 the error didn't go through.
Anyways, thats the case on 2019 unity.

But yesterday on one of our customer's project, it didn't work out and it was more like a deadlock as its expecting jdk 11 but unity isn't allowed to set other than jdk 8.

I will monitor the scenario once again and update if I see the same problems.

 

Can't reproduce?
Try following these steps.

1. Create a Unity 2020.3.13f1 empty project.
2. Switch the platform to Android.
3. Set 'Target API Level' to 31.
4. If necessary, install platform-31. (Unity Editor automatically executes the command.)
5. Click 'Build'.
6. The following error occurs.

---
An exception has occurred in the compiler (1.8.0-adoptopenjdk). Please file a bug against the Java compiler via the Java bug reporting page (http://bugreport.java.com) after checking the Bug Database (http://bugs.java.com) for duplicates. Include your program and the following diagnostic in your report. Thank you.
java.lang.AssertionError: annotationType(): unrecognized Attribute name MODULE (class com.sun.tools.javac.util.UnsharedNameTable$NameImpl)
at com.sun.tools.javac.util.Assert.error(Assert.java:133)
---



I'm surprised by your comment that you don't get any build errors.

 

@JuliusM We noticed this issue again and it din't resolve after using the 30.0.2 build tools too with Api 31.

We tried upgrading the android gradle plugin version to 4.0.1 but its triggering other issues on 2019.4.

we request Java 11 support soon.

 

google only accept build with target 31 now. so what we should do now?

Your app currently targets API level 30 and must target at least API level 31 to ensure that it is built on the latest APIs optimised for security and performance. Change your app's target API level to at least 31.​

 

Yes , get the same error.

 

we need a solution for the previous LTS unity version to support Android target API 31.

 

Based on this document and our experience. Google Play has refused all builds under the target 31 for a new game. So in theory, all the Unity Developers cannot publish new games to Google Play now. Is it a serious issue?

https://support.google.com/googleplay/android-developer/answer/11926878

 

Finally, the build successfully after upgrading the Android gralde plugin version


https://forum.unity.com/threads/build-failure-with-android-target-api-31.1290494/#post-8348181

 

does jdk 11 work on unity 2022.2.0b

 

AFAIK, Unity supports JDK 8 only.
However, 2022.2 seems to come with JDK 11 support.

 

https://developers.google.com/ar/develop/unity-arf/android-12-build

 

I am trying to create an android apk. I have done this for many years so this is not new to me but the environment has changed. Is this forum thread for posting this and is there hope going this route?
The build completes and the transfer to the phone completes.
But when the apk is launched I get a momentary black screen then the app disappears but is still in the execution as the background running screen shows it there.
I do not want to push to any app store. I do not have ads. I do not capture date. This app is for me and me alone as I am creating an exercise app for the Stealth exercise board which wears a phone. There will be a public version in the future.
Where do I look next?

Here is the logcat from within Unity while phone is connected.
I am targeting android 10 api 29.

 

@JuliusM Any update on this ?
Can we create JDK 11 supported build in Unity 2022.2 ?

 

Attempting to build an update for a legacy project on the Google Play Store using Unity 2019.4.40f1. I'm in a bind because:

1. Google Play store requires a minimum target of API level 31 for a previously existing app.
2. To build for API level >= 31 requires a minimum JDK 11
3. Unity 2019.4.40f1 won't allow me to use a JDK that isn't 8
4. Plugins used in the app are dependent on Unity 2019.

So does that mean the LTS version won't allow us to build for the Play Store?

 

Was able to build for API level 31 using Voxel-Buster's instructions here: https://forum.unity.com/threads/build-failure-with-android-target-api-31.1290494/#post-8348181