Binding AAR library that contains AndroidX cause "NoClassDefFoundError" for "androidx/lifecycle/LifecycleOwner" about androidx

[moljac]

@sgong-pdftron Thanks for feedback.

Would it be possible if you could give it another try? Thanks!

Of course. Just, we are (I am) trying to launch AndroidX release 1st. I hope I wll come to this issue in next few days.

@matheussouza97 Thanks for the feedback. Appreciated.

[moljac]

@sgong-pdftron No need to be sorry. Git happens.

I'll check that.

[rubenmarrufo]

Hi! Is there any known workaround for this? Thanks!

[matheusouz]

Any news? My binding is not working because of this error.

[moljac]

LifecycleOwner is ILifecycleOwner in c# and it is surfaced in preview3.

https://developer.android.com/reference/androidx/lifecycle/LifecycleOwner

Do you have maybe linker turned on?

Can you give more info on proguard rules?

[sgong-pdftron]

@moljac I've included a project that you can reproduce this issue in the first post. Were you able to try that?

[moljac]

@sgong-pdftron
I tried your previous sample, but had to remove (unload) some projects . and was not sure if that was completely OK.
And BTW I really did not have that much time.

if you have something smaller it would be appreciated.

[moljac]

@sgong-pdftron Can you try preview03 of the packages that was released yesterday.

[sgong-pdftron]

@moljac Thanks for your reply!

I've just tried preview03 however the exact same error is still present.

The sample project does contain a number of projects however the only projects relevant is the "PDFNetAndroid" and "PDFViewCtrlTools" project. You can unload everything other than these 2 projects.

Clean and build "PDFViewCtrlTools" project will generate the error. Would it be possible if you could give it another try? Thanks!

[matheusouz]

I tried here and got the same error. :(

[moljac]

@sgong-pdftron
Can you please gist ProjectReferences from PDFViewCtrlTools, please?

You have mixture of legacy Android.Support and AndroidX. Why? I have no idea. GooglePlayServices are not AndroidX ready yet, but you are not using those.

[sgong-pdftron]

@moljac sorry about that. Here is the updated project, all support lib is removed from PDFViewCtrlTools:

project:
https://pdftron.s3.amazonaws.com/custom/external/xamarin/androidx/to-Xamarin-v2.zip
log:
https://pdftron.s3.amazonaws.com/custom/external/xamarin/androidx/androidx-error2.txt

[moljac]

@sgong-pdftron
Sorry, but unable to reproduce and I don't have time to dive deeper into those bindings.

1. uncommented 2 Native*.cs classes to shyt up compiler
2. there still are issues with bindings (type conversion pdf.Tools - tools.aar)

Other suspicious stuff:

1. bunch of Xamarin.AndroidX in libs\android\ folder. Stale versions might cause this issue

And please: do not zip packages folders. Those should be restored.

Closing this one. If issue persist (WITH SMALLER REPRO SAMPLE) reopen new issue please.

[sgong-pdftron]

Thanks for the tips!

I was able to get it working again by start fresh, i.e. create a new binding project and add in androidx dependencies and other metadata in the new binding project. With preview-6 the binding project is working again! Thanks for all the help!