Xamarin | Sample Xamarin projects | Form library

by sharmapranav C# Version: Current License: MIT

X-Ray Key Features Code Snippets Community Discussions(10)Vulnerabilities Install Support

kandi X-RAY | Xamarin Summary

Xamarin is a C# library typically used in Telecommunications, Media, Advertising, Marketing, User Interface, Form, Xamarin applications. Xamarin has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

Sample Xamarin projects

Support

Quality

Security

License

Reuse

Support

Xamarin has a low active ecosystem.

It has 30 star(s) with 11 fork(s). There are 7 watchers for this library.

It had no major release in the last 6 months.

There are 2 open issues and 5 have been closed. On average issues are closed in 107 days. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of Xamarin is current.

Quality

Xamarin has 0 bugs and 0 code smells.

Security

Xamarin has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

Xamarin code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

Xamarin is licensed under the MIT License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

Xamarin releases are not available. You will need to build from source code and install.

Installation instructions are not available. Examples and code snippets are available.

Xamarin saves you 22 person hours of effort in developing the same functionality from scratch.

It has 60 lines of code, 0 functions and 45 files.

It has low code complexity. Code complexity directly impacts maintainability of the code.

Top functions reviewed by kandi - BETA

kandi's functional review helps you automatically verify the functionalities of the libraries and avoid rework.
Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of Xamarin

Get all kandi verified functions for this library.

Xamarin Key Features

No Key Features are available at this moment for Xamarin.

Xamarin Examples and Code Snippets

No Code Snippets are available at this moment for Xamarin.

Community Discussions

Trending Discussions on Xamarin

Android emulator not responding problem on the AMD process for Xamarin

Get list of all open windows in .Net Core running on macOS (via NSApplication?)

"We've detected this app uses an unsupported version of Play billing" for Xamarin Forms Android App

MAUI: What build action for appsettings.json and how to access the file on Android?

Azure Pipelines Xamarin.Forms iOS build fails with error MSB4057: The target "_IsProjectRestoreSupported" does not exist in the project

How to check in c# code if the current project is xamarin or not?

Light and dark theme for my Maui Blazor app

Xamarin Forms HttpClient PostAsync always throw NSMallocException

Method 'UIKit.UIApplication.Main' is obsolete: Use the overload with 'Type' instead of 'String' parameters for type safety

exclude project references in solution on conditional c#

QUESTION

Android emulator not responding problem on the AMD process for Xamarin

Asked 2022-Mar-17 at 14:24

When I update my windows to windows 11, I notice about when I run the android emulator for my Xamarin project, it freeze and said not responding.

I try these items below but won’t fix my problem :

reduce ram size of emulator device
reduce the resolution of emulator device
reinstall Android SDK
reinstall visual studio My Virtual Machine Platform and Hyper-V are enabled in my windows features.

My emulator detail is :

OS: Android 12

Ram: 4GB

Resolution : 1080x2340 pixels

Google Services: true

...

ANSWER

Answered 2022-Mar-17 at 14:24

For the AMD process, we need to make clear to the visual studio that we use the AMD process and it should change the emulator behavior to our process.

First of all like I said we need to make sure the Virtual Machine Platform and Hyper-V are enabled because it’s necessary to run an android emulator in a visual studio.

Second, We need to make sure that Android Emulator Hypervisor Driver for AMD Processors is selected in the visual studio.

Android Emulator Hypervisor Driver for the AMD Processors:

Source https://stackoverflow.com/questions/71460025

QUESTION

Get list of all open windows in .Net Core running on macOS (via NSApplication?)

Asked 2022-Mar-07 at 07:27

Getting a list of open windows in .Net Framework on Windows was relatively easy. How can I do the same in .Net Core/.Net 5 or later on macOS?

To clarify, I'm looking for a way to retrieve a list of all open windows owned by any running application/process. I don't have much experience of macOS development - I'm a Windows developer - but I've tried to use the NSApplication as suggested by this answer.

I created a .Net 6.0 Console application in VS2022 on macOS Monterey (12.2), added a reference to Xamarin.Mac and libxammac.dylib as described here - which describes doing this in Xamarin rather than .Net, but I don't see any other option to create a Console application. With the simple code:

...

ANSWER

Answered 2022-Mar-07 at 07:27

In the link you refer to, there is an important note:

... as Xamarin.Mac.dll does not run under the .NET Core runtime, it only runs with the Mono runtime.

Because you try to run Xamarin.Mac.dll under .net-core, you get this dlopen error.

No System-wide List via NSApplication

The linked answer with NSApplication.shared.windows is incorrect if you want to read a system-wide list of open windows. It can only be used to determine all currently existing windows for the application from which the call is made, see Apple's documentation.

Alternative solution

Nevertheless, there are several ways to access the Window information in macOS. One of them could be a small unmanaged C-lib that gets the necessary information via CoreFoundation and CoreGraphics and returns it to C# via Platform Invoke (P/Invoke).

Native Code

Here is example code for a C-Lib that determines and returns the names of the window owners.

WindowsListLib.h

Source https://stackoverflow.com/questions/71194713

QUESTION

"We've detected this app uses an unsupported version of Play billing" for Xamarin Forms Android App

Asked 2022-Feb-22 at 05:46

When attempting to publish my Xamarin Forms app, I get the following error from Google Play console

We've detected this app uses an unsupported version of Play billing. Please upgrade to Billing Library version 3 or newer to publish this app.

I don't use any billing library. I've tried updating all nuget dependencies, to no luck. How do I fix this error so I can publish my app?

...

ANSWER

Answered 2021-Nov-11 at 23:11

Apparently I had BILLING permissions set in my manifest. Removing these fixed the issue.

You can do this by right-clicking the project --> Properties --> Android Manifest --> Searching for BILLING under "Required Permissions" and unchecking it

Alternatively, open AndroidManifest.xml and delete the line

Source https://stackoverflow.com/questions/69935792

QUESTION

MAUI: What build action for appsettings.json and how to access the file on Android?

Asked 2022-Feb-20 at 02:47

I created an appsettings file for a MAUI app and loading it in the IConfiguration using .Host.ConfigureAppConfiguration on the builder from a MauiApp.CreateBuilder(); I can access the file in Windows but not when running the Android emulator. The code:

...

ANSWER

Answered 2021-Dec-09 at 02:36

There is an open issue Add support for appsetting.json that shows this code snippet as current work-around:

Source https://stackoverflow.com/questions/70280264

QUESTION

Azure Pipelines Xamarin.Forms iOS build fails with error MSB4057: The target "_IsProjectRestoreSupported" does not exist in the project

Asked 2022-Jan-26 at 09:39

We have Xamarin.Forms solution with iOS and UWP projects. We use Azure pipelines to build the iOS project. Until yesterday everything was working fine. Now the build fails at the NuGet Restore step with the error:

##[error]The nuget command failed with exit code(1) and error(/Users/runner/work/1/s/"MyProjectName.UWP".csproj : error MSB4057: The target "_IsProjectRestoreSupported" does not exist in the project.

We can see that the problem occurs when trying to restore NuGet packages for the UWP project on the Mac OS build host. Image: macOS-11

Workaround will be to exclude it from the solution, but we are using it for testing purposes and this is not a good option for us.

...

ANSWER

Answered 2022-Jan-26 at 09:39

Updated Answer This can be resolved using MSBuild task instead, as the collogues mentioned below. However, in my case this still lead to the same error. After investigating the pipeline. The root cause has been identified: Both in MSBuild@1 and XamariniOS@2 tasks you should target the specific iOS Project and not the solution file, like so:

" - task: MSBuild@1 inputs: solution: 'PathToIosProject/myproject.iOS.csproj' configuration: '$(BuildConfiguration)' msbuildArguments: /t:restore

" - task: XamariniOS@2 inputs: solutionFile: PathToIosProject/myproject.iOS.csproj' configuration: '$(BuildConfiguration)' packageApp: true signingIdentity: $(APPLE_CERTIFICATE_SIGNING_IDENTITY)

Old Answer

We have managed to resolve the issue. The root cause of it seems to be an update to the mono framework in the MacOS pipeline build agent. In order to fix it, we need a script for downloading and installing an older version of the mono framework as a first step of the build pipeline like so: link to the pipeline tasks photo

This is the code of the bash scrip used in the task:

#!/bin/bash set -ex

MONO_MACOS_PKG_DOWNLOAD_URL='https://download.mono-project.com/archive/6.12.0/macos-10-universal/MonoFramework-MDK-6.12.0.100.macos10.xamarin.universal.pkg'

mkdir -p /tmp/mono-install cd /tmp/mono-install

mono --version

wget -q -O ./mono-installer.pkg "$MONO_MACOS_PKG_DOWNLOAD_URL"

sudo installer -pkg ./mono-installer.pkg -target /

mono --version

ls -alh /Library/Frameworks/Mono.framework/Versions/Current

Source https://stackoverflow.com/questions/69821924

QUESTION

How to check in c# code if the current project is xamarin or not?

Asked 2021-Dec-19 at 12:15

I am looking for a preprocessor symbol that would allow me to compile different code based on whether a project is xamarin or not.

...

ANSWER

Answered 2021-Dec-19 at 12:15

I would suggest you don't use preprocessor symbols, but abstract stuff in separate classes for each platform. Then inject the specific implementation at runtime.

If you really must use these, you can always define your own symbols as needed for each configuration or target framework.

Just create a file called Directory.Build.targets (casing matters!) in the root of your repo. Usually next to your .sln file.

In this Directory.Build.targets you can define symbols like so:

Source https://stackoverflow.com/questions/70406090

QUESTION

Light and dark theme for my Maui Blazor app

Asked 2021-Dec-10 at 03:23

I would like to implement light and dark theme inside of my Maui Blazor application. As you know, Blazor is nothing other than Html and Css so I easily implement dark and light theme for the content of my app (thanks to a simple .dark class added on the html tag).

The problem I am facing is for the upper and lower part of the Maui application.

Let me show you by an example.

Android version

iOS version

The pictures above show you the current situation: on the left, the light theme and on the right, the dark theme. As you can see, the dark theme is problematic for the top and bottom sections (only the top section is problematic for the iOS version).

What I would like to achieve: the top and bottom sections should be colored the same as the content of the page:

#292929 for the Dark theme
#FFFFFF for the Light theme

Something like the picture below: when switching to the dark theme, everything is coloured.

I have no idea how to achieve this for Maui Blazor and I have no experience with Xamarin.

Can you point me to the right direction please ?

As you probably know, BlazorWebView enables you to host a Blazor web application right in the .NET MAUI application.

...

ANSWER

Answered 2021-Dec-10 at 03:23

Within the next month or two, it should become possible to do this via StatusBarEffect and NavigationBarEffect in MAUI Community Toolkit. Discussion here - for Xamarin Toolkit.

Those effects are currently in branch xamarin.develop of Xamarin.Community.Toolkit. The change will also get merged to Maui Toolkit, not sure when exactly.

Below is based on that source code, adapted to work with MAUI. Tested.

Android:

Source https://stackoverflow.com/questions/70265565

QUESTION

Xamarin Forms HttpClient PostAsync always throw NSMallocException

Asked 2021-Dec-01 at 09:02

We are building a mobile app for iOS and Android using Xamarin Forms 5 and using Visual Studio 2022. When we make a Post request to any api, both our own as external api's we are always returned:

Xamarin.PreBuilt.iOS[3728:2199180] Xamarin.iOS: Received unhandled ObjectiveC exception: NSMallocException Failed to grow buffer

GET request work fine. I have searched Google and StackOverflow but can not find any help. I have tried to increase the HttpClient.MaxResponseContentBufferSize without any difference.

The app for now is very simple, one page with a button to test. Code behind is as followed:

...

ANSWER

Answered 2021-Dec-01 at 09:02

I've had exactly the same problem, and have logged a ticket with Microsoft on the VS feedback forums. And then today I found a simple work-around. At least I assume it's a work-around and not a solution. Where I had

Source https://stackoverflow.com/questions/70064427

QUESTION

Method 'UIKit.UIApplication.Main' is obsolete: Use the overload with 'Type' instead of 'String' parameters for type safety

Asked 2021-Nov-17 at 20:38

After upgrade my Xamarin.Forms version to 5.0.0.2244, I'm getting the following warning in Main.cs file inside my iOS project:

...

ANSWER

Answered 2021-Nov-17 at 20:38

Class reference through a string is now deprecated. You need to change this line:

Source https://stackoverflow.com/questions/70011243

QUESTION

exclude project references in solution on conditional c#

Asked 2021-Nov-05 at 07:52

I build xamarin app(uwp,ios,android) and use appCenter for builds and delivery. For certain reason i cant build android and ios project having uwp project included in the solution. Creating build configuration does solve an issue. Is its possible to have some conditional in solution file to include certain projects?

...

ANSWER

Answered 2021-Nov-05 at 07:52

There is a Nuget restore issue with the latest Mono version. You can try lowering the Mono version, used to build the application in Appcenter. Go to AppCenter -> select Build from the left menu. Then choose a branch. At the most right you will see a setting icon. Click on it. From there menu like this will appear. From the SDK version you can choose a different one.

Source https://stackoverflow.com/questions/69844123

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install Xamarin

You can download it from GitHub.

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

Find more information at: