ViewPager2 with tab navigation

[knuxbbs]

Xamarin.Android Version (eg: 6.0):

10.2.99.180

Operating System & Version (eg: Mac OSX 10.11):

Ubuntu 19.10

Support Libraries Version (eg: 23.3.0):

Xamarin.Google.Android.Material 1.0.0

Describe your Issue:

I'm trying to implement a ViewPager2 with tab navigation, based on this guide, but I noticed that there isn't a TabLayoutMediator binding in the Xamarin.Google.Android.Material package. There is a workaround to do this with ViewPager2, or do I will have to wait to the next releases?

[moljac]

but I noticed that there isn't a TabLayoutMediator binding in the Xamarin.Google.Android.Material package.

if I recall it correctly it is not in 1.0.0, but in version 1.1.0.

OK I don't have whole API or changelogs in my head, so I might be wrong.

There is a workaround to do this with ViewPager2, or do I will have to wait to the next releases?

There is version 1.1.0-rc3 of Material, but there is a bug and fix/workaround which needs more testing. Until 1.1.0 is released as stable you will have to stick with rc or not use this feature.

https://www.nuget.org/packages/Xamarin.Google.Android.Material/1.1.0-rc3

[Shikada]

Hi, can you link the bug/workaround that is blocking this? Is this the only blocker for a stable 1.1.0 release? Is there any way I could try to contribute to this?

[b2yq]

i was trying to use rc3, but constructor of a TabLayoutMediator requiring 3rd parameter: ITabConfigurationStrategy and this interface looks like a C#<=>Java wrapper, so do you have any example how to implement this one?

[moljac]

@oocpawel @Shikada @knuxbbs

Well, google has done quite a lot of changes between 1.0.0 and 1.1.0 and add to that java generics which are problem to bind and "translate" to .NET world - this leads to big issue.
We have came up with workaround which is being tested.

Guys (and gals) I am working on that, but priorities might not be what you would like, but, now that GPS-FB with AndroidX dependencies are published, I'm getting closer to the point in time when I will be able to finish this.

[jpobst]

There is now a stable package of Xamarin.Google.Android.Material 1.1.0 available:
https://www.nuget.org/packages/Xamarin.Google.Android.Material/1.1.0.5

[b2yq]

Why its closed if 1.1.0.5 still requires ITabConfigurationStrategy which wasn't implemented in Xamarin.Android? This bug title is saying "ViewPager2 with tab navigation" and right now in 1.1.0.5 it can't be done without ITabConfigurationStrategy implementation.

[jpobst]

I'm not sure what you mean by "not implemented"? It seems to exist in 1.1.0.5:

I can re-open the issue if it still isn't working.

[carlos-lobo-bessa]

@jpobst

I'm currently having an issue with ITabConfigurationStrategy

Is this a known issue? I only get this error the moment I build the project

[jpobst]

I do not get an error when I build and run the code I posted, so it must be something specific to your project or the way you are using it. Can you provide a repro case so I can investigate?

[carlos-lobo-bessa]

@jpobst Let me try to replicate this on a separate project.

[carlos-lobo-bessa]

@jpobst I'm unable to replicate this issue in a new project, when I create a new project im able to use ITabConfigurationStrategy just fine, it must be something specific to my project.

[jpobst]

Our team is unable to investigate this issue further without the requested information.

Hopefully you found a resolution! If not, please update to the latest version of the product and if the problem still occurs, reply with the requested information and reopen this issue.