Android Question Maven artifact not found: androidx.annotation/annotation-experimental

[tonykkkkk]

I installed B4A on a clean machine a few days ago and ran one of the starter projects to confirm all was OK.

I then downloaded Erel's WebRTC sample videophone program and got error:

Maven artifact not found: com.google.guava/listenablefuture

I saw that this had been fixed in October las year and downloaded Erel's com.google.guava-listenablefuture.jar into my AddionalLibs folder, as proposed in the fix of the same name.

I still got the error so ran SDK Manager and found new recommendations that I installed.

I now get:

Maven artifact not found: androidx.annotation/annotation-experimental

Could someone please run the WebRTC application and confirm if it still works.

Thanks,

 

[tonykkkkk]

Oops. I thought I had installed that one already but not. I ran the SDKManager and installed it. Sorry to bother you.
Now I get: Uncaught translation error: com.android.dx.cf.code.SimException: invalid opcode ba (invokedynamic requires --min-sdk-version >= 26)
Reading about desugaring.

 

[Erel]

Such errors are usually related to a misconfigured SDK. Download the two SDK components: https://www.b4x.com/b4a.html
Don't do anything else and don't update any resource.

Make sure to unzip them in a new folder and configure the IDE to use it (android.jar).

 

[tonykkkkk]

But, Erel, I did a fresh install on a new PC ( https://www.b4x.com/b4a.html ) just a few days ago. The program compiles OK. It's the "invokedynamic requires --min-sdk-version >= 26" I need to solve now.

 

[Erel]

Can you upload the project?

 

[tonykkkkk]

It's your own app, Erel. The Zip file here: https://www.b4x.com/android/forum/threads/webrtc-and-webview.98565/
Could you check it still works for you, please? If it does, I'll do as you suggest and reinstall the two SDK components.

 

[Erel]

Compiles fine here.

 

[tonykkkkk]

OK. Thanks for checking. I'll re-install my SDK and resources.

 

[tonykkkkk]

That worked, thanks. I should have listened! I was actually looking for a video phone app. I am waiting for Saif's all-singing-and-dancing WebRTC but I thought someone might have built a simpler one already.