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Great Reads

Introducing Calcium for Xamarin.Forms

by Daniel Vaughan

Create best-in-breed cross-platform MVVM apps using Calcium for Xamarin.Forms.

Xamarin TV Scripts

by Marcelo Ricardo de Oliveira

An entertainment app written in C# language for the Xamarin Forms and Android, using a SQLite local database

Using MVVM to create Tabbed Interfaces with Calcium for Xamarin Forms

by Daniel Vaughan

Create a Xamarin Forms tabbed page or carousel page by binding to a collection of ViewModels; extending beyond the current capabilities of Xamarin Forms.

Xamarin with TinyIoC

by n.podbielski

Use of IoC container in Xamarin on example of TinyIoC

Latest Articles

Xamarin Forms - Validations Made Simple

by Chandru BK

This article will assume you have basic knowledge of C# and Xamarin Forms and shows how to implement the Xamarin Form Validations using simple Data Annotations applied on the models.

Tour of Heroes: MAUI, with ASP.NET Core 8 Backend

by Zijian

A series of articles comparing programmer experiences of Angular, Aurelia, React, Vue, Xamarin and MAUI

Tour of Heroes: Xamarin, with ASP.NET Backend

by Zijian

A series of articles comparing programmer experiences of Angular, Aurelia, React, Vue, Xamarin and MAUI

Generate Icon Sets for Android and iOS in Native Mobile App Development

by Zijian

Use PowerShell scripts to generate icons of native mobile apps

All Articles

Xamarin

"reference to unknown project ignored" error in xamarin studio.

19 Aug 2015 by Agarwal1984

Hello,"reference to unknown project 'abc' ignored" error is coming, when i created new android app project in xamarin studio.I can't create app.Please help me.How can be resolve this issue.Thanks in Advance.Ankit AgarwalSoftware Engineer

'Pushasync is not supported globally on windows, please use a navigationpage.'

18 Mar 2021 by Muthu vj

hi in xamarin form i am facing this Error while clicking the button for navigating another page. can you help me on this how to fix the Error public partial class HomePage : ContentPage { public HomePage() { ...

'system.reflection.assembly' require business (or higher)license

9 Sep 2015 by Agarwal1984

Hello,How to resolve this error:-'system.reflection.assembly' require business (or higher)license.please help me.Ankit AgarwalSoftware Engineer

'system.reflection.assembly' require business (or higher)license

9 Sep 2015 by OriginalGriff

The error message is pretty self-explanatory.'system.reflection.assembly' require business (or higher)license.You need to upgrade your Xamarin subscription to Business or Enterprise in order to use that.Don't like it? Talk to Xamarin: it's their licensing agreement, not ours! :laugh:

415 unsupported media type for POST method xamarin

28 May 2020 by Eliza Maria

I have a login method where I am trying to pass a token into the header along with the credentials and the format "application/json" but unfortunately I am getting a 415 unsupported media type and I don't understand why.I understand the fact that...

[Xamarin forms] reuse activity when launching APP via intent (notification)

30 Oct 2019 by Member 13923913

Hi, my app is sending notifications to the user, which should open a certain page in the app when tapped. Passing parameters works fine, opening the page, too. But one problem drives me mad: every time when the app is called from the notification-intent, a new activity-instance is created and...

[Xamarin] securing/obfuscating connection strings and passwords

4 Oct 2018 by Frank R. Haugen

I'm wondering how to best obfuscate connection strings and passwords in Xamarin. I am connecting to a Cosmos DB and the connection string is retrievable from the .apk files, (dotfuscator don't do a good enough job). I'm new to this kind of security measures, as I've worked on internal software...

A Better Approach for Consuming Authorized Back-End Services while Transparently Handling Refresh Tokens Renewals for C#/Xamarin Apps

30 Sep 2020 by Ana Carolina Zambon

How to consume authorized back-end services while transparently handling refresh token renewals

A Better Way to Share Image Assets in Xamarin Forms

13 Nov 2014 by Daniel Vaughan

Learn how to combine T4 and a custom markup extension to share and consume image files between projects.

A Custom Grid-List Adapter

29 Apr 2014 by F. Aro

Making a custom ListAdapter

A Smarter DI Container for Xamarin.Forms

4 Mar 2019 by marcusts

They got it wrong with IOC containers, but that can be fixed. The post A Smarter DI Container for Xamarin.Forms appeared first on Marcus Technical Services.

dependency-injection

Access to the path is denied xamarin forms

28 Jun 2021 by Prashant Sharma

I am trying to copy my db file to internal storage root/document. My codes are working good till Android 9 but after it i am getting the error "System.UnauthorizedAccessException: Access to the path...

Adaptive Layouts for Different Device Sizes in Xamarin Apps

6 Jan 2021 by Ana Carolina Zambon

In this post, you will learn how to make Apps have a fluid and adaptive UI on different device screen sizes.

Alerts in Xamarin

24 Apr 2018 by didourebai

Mobile alerts in Xamarim.forms

Alternative of signalr with callback

12 Apr 2018 by Member 10666843

we are going to make an application should sends data from mobile application (xamarin-forms) to get data from console application (that will be installed on local "client" machine) using webapi hosted on (middle server), i was thinking in SignalR to make the mobile application and console...

Android App Development in Visual Studio 2015 using Xamarin

15 Mar 2017 by DELPIN SUSAI RAJ

you will try install visual studio for android emulator or xamarin android player. it will work perfectly.

Android game development where to start

4 Mar 2016 by devonJones

So, I've been getting into App development in Android using Xamarin with the Visual Studio IDE but now I want to venture into the world of game app developmentWhere do I start? I should be able to keep using VS right?or do I need to move over to a game IDE such as Unreal Engine or...

Android game development where to start

4 Mar 2016 by Afzaal Ahmad Zeeshan

I won't recommend Xamarin as a game development engine, because just to make things work in Xamarin, you are again going to ask for help from another tool.Instead, I would recommend that you get a game development engine. Unreal, Unity or any other, doesn't matter. As long as that framework...

android navigation title alignment center in xamarin android

29 Jan 2016 by ravikhoda

Hi,i am using the following code to align action bar title in the center in xamarin c# cross platoform application. public static void SetActionbarText(Activity activity, string text) { // Setting custom view enable if (activity != null) ...

Android on Visual Studio

18 Mar 2015 by Houssem_Dellai

Develop Android applications using Visual Studio and C#

Android Recycler View with Spinner Item Change Selection and Update UI

25 Sep 2015 by khanzzirfan

This article helps you to understand how to listen to nested controls inside the recycler view and update the view dynamically.

Android SpeechRecognizer problem

10 Sep 2014 by ali_heidari_

Hi.I am working on a small application for android using xamarin.android and c#, a part of it is listening to user speech!I am using Android.Speech.SpeechRecognizer for this. this is my code :Android.Speech.SpeechRecognizer sp =...

Android Wearable: Creating A Simple Survey Feature Using Xamarin

10 Jun 2016 by Vincent Maverick Durano

In this article, you will learn how to create a simple Survey feature using Xamarin for Android Wearable.

Android.views.windowmanagerbadtokenexception: unable to add window -- token android.os.binderproxy

27 Aug 2018 by Nagendra Babu Korlakunta

I am developing an android application using xamarin. I am creating custom toast messages similar to android Toast.MakeText().please see my c#.net below code var @params = new WindowManagerLayoutParams( ViewGroup.LayoutParams.WrapContent, ...

Androidx msbuild issue

19 Feb 2021 by tsmith2

Been getting the following error when building a Xamarin Android project. Android X migration requires a minimum Xamarin.Android version of 9.4.0. Your version is . Please upgrade your Xamarin installation to a newer version. What I have...