The "ResolveLibraryProjectImports" task failed unexpectedly. File "...\R.txt"...
Hi Xamarin Forms build fails here with the following error: The "ResolveLibraryProjectImports" task failed unexpectedly. System.IO.IOException: The process cannot access the file...
View ArticleFirebase not working after upgrading the portable into .Net standard ?
Hi All, I have converted the Portable project (.Net framework) into .Net standard .After upgrading i could not able to get the firebase Token meanwhile none of the firebase methods are calling and...
View ArticleHow to accept screen operations even if repainting takes long time processing?
I have to do very heavy processing when updating SKCanvasView. At that time, the UI thread stops every time. So, I'd like to implement it using asynchronous processing, but would you please teach me?...
View ArticleXamarin Forms TabbedPage question
Hello everybody, I was tinkering around with the TabbedPage (regarding to https://docs.microsoft.com/en-us/xamarin/xamarin-forms/platform/android/tabbedpage-toolbar-placement-color) but I have several...
View ArticleSQLite Updates are 10 times slower on Android than iOS
Being somewhat new to SQLite and Xamarin I am not sure of why two different platform have two drastically different performances. In our app when a user logs in for the first time we need to sync a...
View ArticleiOS: Expanding/contracting a native widget
I have written a custom control to wrap the UIDatePicker control as one entry in a form. The entry is initially contracted and the user can then tap it to expand the date/time picker. The expansion is...
View ArticleBinding style to content view not changing dynamicaly
I've two Frames with bound style properties and for each a tap event to change the actual content view: <Frame Style="{Binding frameStyle1}"> ... <Frame.GestureRecognizers>...
View ArticleUnable to Change Editor View for Compiler Directives
I am attempting to write Android and iOS specific code with compiler directives using an #ifdef block. I am however unable to change the editor of the preprocessor, there is no option for Android or...
View ArticleCameraController.ApplyCameraSettings System.NullReferenceException
while opening zxing scanner page app crashed : CameraController.ApplyCameraSettings android.runtime.JavaProxyThrowable: System.NullReferenceException: Object reference not set to an instance of an...
View ArticleSystem.Resources.MissingManifestResourceException
Hello all I am new to xamarin and I get this exception when I'm trying to globalize my project by using different language: System.Resources.MissingManifestResourceException HResult=0x80131532...
View ArticleAnimation not working when HeightRequest is -1 for StackLayout. Bug?
When not setting a StackLayout Height size it is (-1). I want to hide this layout with an EventTrigger and a smooth animation ( 5 seconds ). This does not work. If I use a defined value height of 275,...
View ArticleSystem.NullReferenceException: Object reference not set to an instance of an...
im using App Center to collect insights about the app. im not using MainPage as my entry page. In recieving this error PageUtilities.GetCurrentPage (Xamarin.Forms.Page mainPage)...
View Articlehow to pop an application to root view
Hi I would like to have my Application show in the root view after it has been in the background for more than 5 min. the following code gets called but nothing happens in the UI. public class App :...
View ArticleInvalidOperationException when using PushAsync
Hi, I am using Syncfusion TabView on my MainPage. in my App starting the page like this: MainPage = new NavigationPage(new MainPage()); then from the MainPage I am opening Signin as Popup like this:...
View ArticleHow to show the day of the week in datepicker for iOS?
I need to show the day of the week on the side of the day in datepicker for iOS, but i didn't find anything to do this.
View ArticleHow to use a Merged Resource Dictionary with android XML?
I'm using an xml file with android to define the style of a button. However when it comes to defining a color I'm not sure how I can access the merged dictionary from it. At the moment I'm using...
View ArticlePhoto Overlay for iOS using the Media Plugin
I am having difficulty implementing the Photo Overlay for iOS using the Media Plugin. I am trying to use Dependency Services to pass the function to the shared code, but have not succeeded. I am really...
View ArticleHow to change the position or size of a view in Relative Layout at runtime in...
What I did is I have added a label to a relative layout by setting all constraint. Below is my code for that. ` relativeLayout.Children.Add(textLabel, Constraint.RelativeToView(innerBorderBox, (parent,...
View ArticleXamarin and SignalR cannot connect
Hello Everyone, I'm having a strange issue with Xamarin, I am trying to connect it to my SignalR Server hosted in Azure however when I call StartAsync() on my connection it seems to just hang - I don't...
View ArticleForeground Service problem on Oreo 8.1 and Pie 9.0
I have problems with Oreo 8.1 and Pie 9.0. When my pedometer app is open or on the background it is counting steps, but not when the app is closed. Also after closing app notification icon disappearing...
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