Then this really sounds like it’s not related to DAVx5 and I unfortunately don’t know whats going wrong between iPhone and your server…
Please update support-libraries
We are using cert4android in our open source project and found out, that the version 26.0.1 of the support libraries has a bug (see https://github.com/stefan-niedermann/nextcloud-notes/issues/279 ). Since it’s only possible to use a single version of the support library in a project, I kindly ask you to update the support libraries in cert4android (26.0.2 fixes the problem, but 26.1.0 is released, too).
Is there a conflict when you use another version? I thought gradle can resolve this and use the “newest” conflict resolution strategy by default. Are you using the latest gradle version?
But I’ll update nevertheless
@rfc2822 Thanks for the hint! The automatic conflict resolution didn’t worked in our project, since there was a dependency in cert4android, that we hadn’t in our module. After adding
com.android.support:cardview-v7as dependency to our module, the conflict resolution works, now.
Hence, the problem is solved without updating
cert4android. Thank you very much!