TextColor of Xamarin.Forms SearchBar

I have a Xamarin.Forms SearchBar on a StackLayout with a dark background color. By default the input field is dark as well, probably due to a transparent background. To modify the search bar...

Carousel Page Indicator

I have a Xamarin.Forms (1.4.2.6359) Project using Visual Studio 2013 and have created the carousel page below. I want to add page indicators, i.e. dots over top of the carousel page. Is this able...

Setting the Focus to an Entry in Xamarin.Forms

This is just a simplified example, but I'm trying to set this up so that when I open up this page in my Application, the first thing that happens is the keyboard pops up ready for the user to type...

System.XML on XAMARIN forms project

I am trying to use XmlDocument class ** and **XmlDocument .Load(..) function on the Portable Project of XAMARIN.Forms Portable solution with visual studio community. The compiler says that "The...

Xamarin.Forms - Screen black when using NavigationPage

I am adding a NavigationPage in a Xamarin.Forms app. After adding the NavigationPage, the screen was black and not showing the target page. This is a new project, so the code is quite...

How to make Xamarin Forms text size depending on OS settings text size

I would like to make it possible for users to make text size bigger in my App and thereby easier to see the texts. I don't want to do this inside my App setting when both iOS and Android have this...

any method in xamarin forms equivalent to shouldOverride method of android

Is there any method in xamarin forms equivalent to shouldOverrideUrlLoading method of android. That will let me handle a JS callback. Please note I'm trying on non native. So please don't suggest...

Xamarin.Forms Picker - System.Reflection error

I have a simple picker that binds Items dynamically, meaning it changes when a Switch is toggled. However, there is an exception error : System.Reflection.TargetInvocationException: Exception has...

UWP : PRI277: 0xdef00532 - Conflicting values for resource ''

As a part of the Visual Studio 2017 UWP build process, an app called MakePri.exe is run. It is throwing an error in my project but I have no idea why. The command line call is: C:\Program Files...

Retrieving ListView selected item value in Xamarin.Forms

I'm developing/learning XamarinForms. I'm using Web Api to get values and use them to populate a ListView. Now I want to get current values on ItemSelected and store them for later use, but I...

Xamarin form - how to upload and retrieve image using sql server web api

i need to upload image as binary data and retrieve here is my code Web Api [ResponseType(typeof(tblEmpPicture))] public IHttpActionResult PosttblEmpPicture(tblEmpPicture tblEmpPicture) ...

How do I change bottom tabs background color

I am working on Xamarin.Forms. I have bottom tabs in my android project. Tabs are showing default background color something light gray. I need to change tabs background color to my preferred...

Control single page orientation and view rotation in Xamarin Forms

in our project we are going to lock app in portrait mode, no problem so far. Now we would like to have the possibility to rotate only some specific pages or content (to display larger plots). I've...

Image not displaying on MVVM XAML Xamarin Forms

I have tried unsuccessfully for 2 days to display image on my Xaml from MVVM Xamarin forms. I would appreciate if someone could help me with this issue. Here is my code: XAML <Grid> ...

The SSL connection could not be established

I am using a third party library (Splunk c# SDK ) in my ASP.NET core application. I am trying to connect to my localhost Splunk service via this SDK, but I get an exception...

Could not find android.jar for API Level . Xamarin

When I want to start my project I have a mistake Severity Code Description Project File Line Suppression State Error Could not find android.jar for API Level . This means the Android SDK platform...

Xamarin Forms CollectionView with square images

I want to display list of images as a grid with several rows (2 or 4) with Xamarin Forms. Each cell of the grid must be square. I'm using CollectionView with vertical layout, required span and...

How can I obtain current Shell Content Page reference in Xamarin App Shell?

I am developing a Xamarin Forms app using App Shell. I found that I had to handle android hardware back button in AppShell.xaml.cs for a ShellContent Page, instead of ShellContent Page. protected...

Xamarin Forms - Image source not working from url

I have updated my Visual Studio from 2017 (15.9.16) to 2019 (16.3.1). Then i opened old (2017) project in 2019 studio, run in Android emulator and have found that all images with url as source are...

Share Not Working Properly on IOS or it's very slow to display the popup share window

I'm working on a mobile App using Xamarin Forms, I'm facing an issue that is working as expected on Android but not on IOS, I have a share button that will call the built-in share of the working...

Xamarin Forms Android Linker problem after upgrading MsBuild version

We recently updated our build version from MsBuild 15 (from Visual Studio 2017) to MsBuild 16 (from Visual Studio 2019). After the change the release build for our Xamarin.Forms.Android app...

iTunes Connect complains about my Xamarin Forms app "Missing Purpose String in Info.plist"

I submitted a Xamarin Forms iOS application to the App Store, but received the following email: ITMS-90683: Missing Purpose String in Info.plist - Your app's code references one or more APIs that...

Visual Studio get stuck on "Restoring packages for solution"

From several days I'm trying to open a Xamarin Forms Project in Visual Studio for Mac, but it gets stuck at "Restoring packages for solution" and I cannot pass that, I cannot work on the...

Xamarin Forms Shell - Navigation to old navigation stack rather than flyout page

I’m having trouble with my Xamarin Forms Shell app. I'm not sure if this is a bug or expected behaviour, can someone point me in the right direction. I have an app with 2 pages in the Visual...

Binding Grid Column Width on Xamarin.Forms

I'm attempting to build a 3 column status bar with the Grid control in Xamarin.Forms. I receive 3 values: open, pending and filled. I would like the column width to be bound to those values....

Getting error "CUDA backend requires cuDNN" when configuring OpenCV cmake build with cuda backend turned on

My goal: My goal is to configure a build of OpenCV 4.5.1-dev with support for cuda, tesseract and QT without any cmake error.. The problem I am having: I am getting the following error when I...

Failed to open directory Xamarin Forms

I have recently created a HelloWorld project with Xamarin Forms to develop a mobile app. But, I don't know what happen but I cannot launch the app with Android Device Manager or even my own phone,...

Xamarin.Forms can't change Application Icons in Xamarin.iOS on local device

I have followed both the guide from Microsoft and the upvoted answer on SO to change my iOS Application Icons but it does not work for...

Rg.Plugins.Popup error Rg.Plugins.Popup.Exceptions.RGPopupStackInvalidException: 'No Page in PopupStack'

i ran into this exception in my Xamarin Forms app that seems clear yet hard to resolve. I created a kind of loader using the Rg.Plugins.Popup and i want to dismiss this loader when a user presses...

problem updating location every 5 seconds with xamarin essentials

I have an application with xamarin essentials. This takes the information every 5 seconds with a waiting time of 3 seconds of GPS Device.StartTimer(TimeSpan.FromMilliseconds(Timmer), () => {...