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Activity
    Frank Szendzielarz
    @FrankSzendzielarz
    I have the logs using Visual Studios device logs viewer, same as logcat, getting that 'Could not activate JNI Handle 0x7fdbfee170 (key_handle 0x7d963d4) of Java type 'crc64925d64ef8a16450b/FirebaseService' as managed type 'CMSApp.Droid.FirebaseService'. type of error. Suspect ctor of [My]FirebaseService accessing App component or ctor related problem now- perhaps upgrade in XamarinForms (and corresponding play services etc) results in modified lifecycle. Just testing now.
    Frank Szendzielarz
    @FrankSzendzielarz
    OK sussed it. It's definitely the ctor. Got the notifications working. Am going to post this in the GitHub issue tracker.
    Jonathan Pryor
    @jonpryor
    @FrankSzendzielarz: could you try setting `MONO_GC_PARAMS=bridge-implementation=old`? https://docs.microsoft.com/en-us/xamarin/android/internals/garbage-collection#configuration
    juepiezhongren
    @juepiezhongren
    ！
    wellbye
    @fatfatson
    image.png
    hi,does anyone know why the stacktrace repeat multi times?
    Jonathan Pryor
    @jonpryor
    @fatfatson: async/await and nested exceptions are possibilities (throw new FooException("message", nestedException))
    wellbye
    @fatfatson
    but all the frames seem are same?
    multi same frames
    it's so boring
    richjones88
    @richjones88
    Does Xamarin cost? I have a Visual Studio Professional Edition licence
    Jon Douglas
    @JonDouglas

    @richjones88 https://docs.microsoft.com/en-us/xamarin/cross-platform/get-started/requirements

    It does not cost. You can use a Visual Studio Community edition to use Xamarin.

    richjones88
    @richjones88
    Awesome, thanks @JonDouglas
    Would you recommend having the physical hardware for devices I'm looking to target. I.e having an iPhone and iPad to target these devices?
    Jonathan Peppers
    @jonathanpeppers
    I would definitely recommend testing your app on real devices
    But day-to-day development you can use the simulators/emulators
    richjones88
    @richjones88
    thanks @jonathanpeppers
    Chandu1233
    @Chandu1233

    Hi All
    I have a query regarding AndroidClientHandler
    In the Xamarin documents it is said that AndroidClientHandler internally interacts with Native java code to make API calls. But when I decompile by apk and class files I could not find the HttpJava files.

    I actually would like to instrument the Http Java files inside the apk and repackage it, can some one please help me how AndroidClientHandler interacts with JAVA?

    Thanks

    Jonathan Peppers
    @jonathanpeppers
    @Chandul1233 the source for that class is here: https://github.com/xamarin/xamarin-android/blob/master/src/Mono.Android/Xamarin.Android.Net/AndroidClientHandler.cs
    The Java APIs used are part of the Android platform, and will not be in your app
    You might be better off adding the source code for this class to your project and changing the C# code as you need?
    Chandu1233
    @Chandu1233
    @jonathanpeppers thanks for your valuable suggestion, I had gone through the source code but I am thinking of compilation errors if I include the class in my plugin. I will try
    Miha Markič
    @MihaMarkic
    guys. is it just me, or latelly when I add an resource xml to Visual Studio 2019 latest stable, it doesn't set the file's Tool property
    it think it used to set it by default
    Jonathan Peppers
    @jonathanpeppers
    @MihaMarkic is it using MSBuild.Sdk.Extras? I don’t think it would work in that case
    Miha Markič
    @MihaMarkic
    @jonathanpeppers For any project. i.e. I create a new Android project, right click on layout directory, add new Android layout, layout1.xml file is created, designer opens. However, Custom Tool is not set at all. Build Action is correctly set to AndroidResource.
    @jonathanpeppers I can set Custom Tool manually and then it works as expected.
    moljac
    @moljac
    Zivjo Miha
    You probably want to mention jonathanpeppers not jonpryor
    Miha Markič
    @MihaMarkic
    @moljac Duh, silly me. You are absolutely correct
    moljac
    @moljac
    It is OK. Not big issue.
    Jonathan Peppers
    @jonathanpeppers
    @joj you might be interested to take a look next week ^^
    Or is there something we do in MSBuild that makes this work?
    Dean Ellis
    @dellis1972
    It should be automatically added by the following code https://github.com/xamarin/xamarin-android/blob/master/src/Xamarin.Android.Build.Tasks/Xamarin.Android.Common.props.in#L30
    So by default any AndroidResource will get this during a build. So it might just be that the IDE is not reflecting it until the project gets reloaded?
    Miha Markič
    @MihaMarkic
    @dellis1972 Hm, indeed it seems that to be the case. VS won't reflect it untill project is reloaded. Misleading a bit, but everything is fine. I don't care about that while it works :) thanks @jonathanpeppers
    Miha Markič
    @MihaMarkic
    another odd feature I'm seeing: Sometimes, after I stop a debugging app, the next time I start to debug it, it will show for few seconds and then stop with this message in output window: "Couldn't connect debugger. You can see more details in Xamarin Diagnostic output and the full exception on logs."
    Only full rebuild does the trick and I can debug again.
    Jonathan Peppers
    @jonathanpeppers
    @MihaMarkic maybe file an issue when that happens again
    Is this VS Windows? or VS Mac?
    Hopefully it actually has an error message in the log like it says
    Miha Markič
    @MihaMarkic
    @jonathanpeppers It's random. And yes, it's latest stable VS2019+Xamarin on Win10
    I'll check if there is anything in logs when this happen and if there is, I'll file an issue
    Jonathan Peppers
    @jonathanpeppers
    I think Output -> Xamarin Diagnostics might be the log to look at
    there is a Xamarin one, too
    Khabubu Phathutshedzo
    @khabubu
    Hi everyone, I need some help finding resources to learn Xamarin Android. I went to Microsoft Learn only to find one video on Xamarin.Android, I was under the impression that the old videos from Xamarin University will be ported to Microsoft Learn, is there any place one can use to continue the learning path?
    Dean Ellis
    @dellis1972
    https://docs.microsoft.com/en-us/learn/browse/?products=xamarin
    not videos but a good number ot tutorials
    richjones88
    @richjones88
    @khabubu Try Udemy, courses are about £10 but very good.
    This is the course I am currently doing, and I am completely new to Xamarin. https://www.udemy.com/course/complete-xamarin-developer-course-ios-and-android/
    Miha Markič
    @MihaMarkic
    Pluralsight has very good content (disclaimer: I got a complimentary subscription)
    I also vaguely remember, that Pluralsight limited content comes with Visual Studio or something like that.
    juepiezhongren
    @juepiezhongren
    @jonathanpeppers , has "Improve Process Startup Time" project finished?
    Khabubu Phathutshedzo
    @khabubu
    @richjones88 Thank you I found the old Xamarin University Repo on Github with the old material
    Jonathan Peppers
    @jonathanpeppers
    @juepiezhongren did you mean the Github project?
    https://github.com/xamarin/xamarin-android/projects/1
    We are still working in this area, I don't think we are using Github projects to track work, though
    Jonathan Pryor
    @jonpryor
    projects/1 will never be done! mwa-ha-ha-ha-ha-ha?