50,743 questions
0
votes
2
answers
128
views
Chain validation failed: .NET MAUI 9 Android App and Azure Web App
I have several .NET MAUI 9 and Xamarin.Forms apps in production, all connecting to an Azure Web App with two instances and a direct HTTP endpoint that handles hundreds of requests per minute.
Lately ...
1
vote
0
answers
44
views
Xamarin Forms - Last Android version supported
What is the last version of Android that is supported for Xamarin Forms? I'm trying to update my app to the last possible version of Android for Xamarin Forms. I know I'll have to switch to MAUI ...
- 143
0
votes
0
answers
35
views
Android WebView LoadUrl is not waiting for another call to finish
I have a .net Android application (migrated from xamarin) and inside it there is a webView that displays a web app and also I have an Android Foreground Service that periodically is making a call to ...
0
votes
0
answers
48
views
ZXing 3.1.0-beta2 Visual Studio 2022 Xamarin.Android cause app to crash in Release Mode
I'm building a Xamarin.Android application to scan barcode
I'm using the Nuget Zxing 3.1.0-beta2
In Debug Mode everything works as expected
But if I run on Release Mode the App dissapear in BackGround ...
0
votes
1
answer
163
views
App-wide performance issue after converting from Xamarin to MAUI
This may be too open ended for SO, but I've reached a point where if I can't resolve this then I need to redo weeks of work.
I've manually converted an existing Xamarin app to MAUI, and found that ...
- 605
3
votes
1
answer
2k
views
Has anyone successfully targeted Android API Level 35 in a .NET MAUI app?
I recently got a critical warning from Google Play Console: "2 of your apps are targeting an old version of Android. Google Play requires all apps to meet target API level requirements before ...
- 55
0
votes
0
answers
50
views
Changes to read/write permissions in Xamarin on Android 14+
I have this code, but when I change android:targetSdkVersion="31" to android:targetSdkVersion="33" or higher versions it doesn't work, it keeps asking for permission, but the ...
1
vote
1
answer
324
views
.NET MAUI Android: HttpClient POST requests are delayed/slow with multiple rapid requests (iOS works fine)
I'm building a .NET MAUI app that communicates with a local server by sending HTTP POST commands.
I have a class in a .NET library, and I use HttpClient to send requests. It works perfectly and ...
- 21
0
votes
0
answers
38
views
Linea pro c# SDK for IOS read pkpass with nfc
I am developing an app that should be able to read pkpasses that have NFC enabled.
So far I have the service to fetch those pkpasses.
The app has Linea Pro Scanner that has RFID an NFC capabilities.
...
- 31
1
vote
1
answer
118
views
Cannot Pair Visual Studio on Windows with Mac via SSH for Xamarin/iOS Build
I'm trying to pair Visual Studio 2022 (Windows) with a Mac for building a .NET MAUI or Xamarin.iOS project.
I have full terminal access on the Mac, and I've already enabled Remote Login (SSH) on it.
I ...
- 11
0
votes
0
answers
49
views
dotnet-android Java binding library (usb-serial-for-android): CS0535 'does not implement interface member'
I am using the usb-serial-for-android library from GitHub with a dotnet Visual Studio project type Android Java library binding.
Just added this to my project file
<ItemGroup>
<...
- 23
0
votes
0
answers
110
views
MVVM Toolkit Source Generators Disabled in Rider on Mac (Roslyn 4.x Required) — Xamarin Project Works on Windows
My Xamarin project builds and runs successfully in Rider 2025.1.2 on Windows, but when opening the same project in Rider on macOS, I encounter the following warning:
CommunityToolkit.Mvvm....
0
votes
0
answers
118
views
The AOTCompile task failed unexpectedly in .NET Maui iOS on MacOs. Why?
I recently moved from an x86 Intel Macbook to an Apple Silicon Macbook. I'm working on a .NET9 iOS app in Maui using JetBrains Rider. The app builds but won't deploy. The error states that the ...
- 1,307
1
vote
3
answers
596
views
Cannot pair to Mac Visual Studio 2022 for .NET MAUI
I am trying to pair my Windows 11 computer with Mac Pro to debug and eventually publish my MAUI app for iOS. When I go to the “Pair to Mac” setting, however, I keep on receiving an error saying that I ...
- 11
0
votes
0
answers
29
views
Visual Studio 2022 deploying old Xamarin Android app version to device
I'm facing a very frustrating issue with my Xamarin Android project in Visual Studio 2022.
Problem:
When I build and run my Xamarin Android application from Visual Studio 2022, it frequently installs ...
0
votes
1
answer
173
views
NuGet package 'HarfBuzzSharp.NativeAssets.Android' version '7.3.0.2' contains a shared library 'libHarfBuzzSharp.so' which is not correctly aligned
Added SkiaSharp.Views.Maui.Controls v3.116.1 to a new project, and it gives me the following warning:
NuGet package 'HarfBuzzSharp.NativeAssets.Android' version '7.3.0.2' contains a shared library '...
- 17k
0
votes
0
answers
22
views
Xamarin - Radio button in code dynamic grid text answer binding
I cant work out how best to solve this and bare with me, I am a beginner.
I have a list of "questions" built within a dynamic grid in code. Each question requires a string answer to be ...
- 15
0
votes
0
answers
26
views
Default FirebaseApp is not initialized in this process - Maui [duplicate]
I recently implemented firebase push notification into my maui app and facing a strange issue,
sometime the application works fine and sometime it trows exception,saying:
Default FirebaseApp is not ...
- 55
0
votes
0
answers
53
views
Firebase crashlytics for Xamarin iOS app strips too much in it's crashlogs
So I am trying to collect crashlogs from a Xamarin Native iOS app using firebase crashlytics, but the crashlogs won't let me identify where the crashes are coming from.
Here's test code I'm trying to ...
- 13
1
vote
1
answer
71
views
MAUI - mobile - Shell tabs only appear on pages listed in the tab element
I think I am missing something with the tabs system - https://learn.microsoft.com/en-us/dotnet/maui/fundamentals/shell/tabs?view=net-maui-9.0
I want to get rid of the navbar at the top, and simply use ...
- 415
1
vote
0
answers
16
views
Xamarin Android C# empty space after adding divider using ItemDecoration
I am using a custom divider.
And I add a divider after each itemView.
divider
When I select several elements next to each other, it turns out that the divider is between them.
And you can see white ...
- 25
0
votes
1
answer
123
views
Android SetDecorFitsSystemWindows changes status bar to black on resume
So I'm using Window.SetDecorFitsSystemWindows(false) in onCreate to make my app full screen, the status bar is semi-transparent drawn over my view/activity (which is what I want).
However when I ...
- 13
0
votes
1
answer
196
views
Firebase push notification in MAUI ios
Anyone implemented firebase push notification on maui .NET 8
I followed a tutorial and it worked well on android , I am able to receive the push notifications but on iOS it is not receiving the push ...
- 55
1
vote
0
answers
151
views
Resolver for the current activity is not set. Call Fingerprint.SetCurrentActivityResolver somewhere in your startup code
Getting Exception in MAUI app while trying to implement biometric on maui android using plugin.Fingerprint
the exception says: {System.InvalidOperationException: Resolver for the current activity is ...
- 55
-2
votes
1
answer
82
views
Android Emulator in Visual Studio 2019
I am new to mobile programming. I try to run a simple android app but i keep getting this error from the android device manager. I had previously downloaded the emulator before to use to run the ...
- 1