[FR] Improve Android Resolver resolution and logging when conflicts occur without mainTemplate.gradle

[rotter]

[REQUIRED] Please fill in the following fields:

• Unity editor version: 2020.3.6f1
• External Dependency Manager version: 1.2.165
• Source you installed EDM4U: .unitypackage
• Features in External Dependency Manager in use: Android
• Plugins SDK in use: Firebase, Admob and Facebook Audience Network
• Platform you are using the Unity editor on: Mac

[REQUIRED] Please describe the question here:

I'm a long time user of Jar Resolver (since 2018 or so), but never had to fiddle or understand its inner workings as it always worked fine for me. I always only used Google plugins (Firebase and Admob) and had no issues.

Recently I started using Facebook Audience Network but since a couple months I am having a problem which took me a while to find the root cause. This problem was causing a crash, after a while of debugging I noticed it was using a newer audience-network-sdk (6.5.0) than I was expecting (6.2.0), and for some reason this newer version has issues that are causing the crash that are unrelated to this post/repo.
After more debugging I found out that EDM is changing the version to the latest version, and after narrowing it down a bit more I saw on the huge log that it says that there is a conflict, but I fail to understand what is this conflict, or how to solve it:

com.facebook.android:audience-network-sdk conflicting due to package(s):

• com.facebook.android:audience-network-sdk:6.2.0
• com.google.ads.mediation:facebook:6.2.0.0/com.facebook.android:audience-network-sdk:6.2.0

Then after a few resolve iterations it changes the version to "6+" and that's what causes the SDK version to change to 6.5.0 (which currently is the latest version). But the names are exactly the same (1st line "com.facebook.android:audience-network-sdk:6.2.0" vs the right side of the slash), I dont understand the root cause of this conflict.

There's a second conflict that follows exactly the same pattern:
com.google.android.gms:play-services-ads conflicting due to package(s):

• com.google.ads.mediation:facebook:6.2.0.0/com.google.android.gms:play-services-ads:19.5.0
• com.google.android.gms:play-services-ads:19.5.0

Any help is appreciated, thanks in advance!

[google-oss-bot]

This issue does not seem to follow the issue template. Make sure you provide all the required information.

[paulinon]

Hi @rotter,

In order to identify what's causing this behavior, could you provide a minimal, reproducible example of your project?

[rotter]

Thanks @paulinon for the response. I have made the following steps to reproduce, which is pretty simple and I believe safer (for both of us) than me sending a project, but if you still prefer the project I can send it, let me know.

1. Created an empty project on Unity (selected 2D template but dont think it makes any difference)
2. Switched to Android
3. Imported FAN 6.2.0 ( https://developers.facebook.com/resources/audience-network-unity-sdk-6.2.0.zip )
4. Ran Force Resolve and it worked (downloaded version 6.2.0)
5. Imported FAN-AdMob mediation 3.1.0 ( https://dl.google.com/googleadmobadssdk/mediation/unity/facebook/FacebookUnityAdapter-3.1.0.zip )
6. Ran Force Resolve and it gave the conflicts mentioned and ended up downloading the latest FAN version (6.5.0) which is the undesired effect

Is something mis-configured on Facebook's FAN side? Or on Google's Mediation plugin side? Or is it a problem with jar resolver?

Obs: just found out by chance someone else with the same problem: https://forum.unity.com/threads/solved-gradle-is-not-building-after-importing-facebook-sdk-with-admob-mediation.1102282/

[paulinon]

Thanks for providing more information, @rotter. While I try to do these steps, could you try if using 1.2.166 of the resolver makes any difference?

[rotter]

I have just downloaded the latest version and tried again, same problem (did a Reimport All and also Delete Resolved Libraries to be sure).

The only difference I noticed from the scenario I reported yesterday is that now it is now downloading Audience Network version 6.5.1 (instead of 6.5.0), but I would guess Facebook released a new version yesterday night.