Only the original thread that created a view hierarchy can touch its views.
Hi there! First of all, my english is not very well, so please be patient to read my question slowly. Well, as you can see on the tittle, I got a problem about threads. I'm using a Listview and trying...
View ArticleBluetooth Thermal Printer
I'm trying to connect to a Bluetooth thermal Printer using Xamarin forms, and not platform specific. I try to use Binding Jar, but failed to connect and send data to printer.. Anyone have idea on how...
View ArticleHow to display "Back button" on NavigationPage even when I am on the first page
Hi, I have a NavigationPage (lets call it SubNavigator), which I push onto another NavigationPage (lets call it MainNavigator) using PushModalAsync. That works. I can push into SubNavigator and...
View ArticleHow can I horizontal scroll a ListView which is wider than the screen?
I tried nesting the ListView into a ScrollView, but nesting is not possible. How can I achieve what I want?
View ArticleAn error occurred while retrieving package metadata for 'Xamarin.Forms' from...
XamlCTaskFailed Unexpectedly Im getting this error Can Anyone help me?
View ArticleXamarin Forms Listview items dissapearing when scrolling
I've run into a problem with listviews in xamarin forms.( + Prism MVVM ) I have a history page which shows a list of months with a list of games in that month. When scrollling up and down some items...
View ArticleHow to get Navigation back button event in Xamarin forms
In my project on one page there is a form to add products. if user doesn't save the details and pressed back button, at that time I want to display the action sheet having Discard, Save, Cancel...
View ArticleHow to animate the image button or image control using custom renderer MVVM?
I have a password page it consists of pins each of them is an image. My requirement is I need to provide an animation effect on taping the image. Please guide.
View ArticleWhat is the minimum version of Android that is required for...
My target Framework version is Android 6.0. When i upgrade xamarin.forms to 3.4.0.1008975 then get this error: 'The "XamlGTask" task could not be initialized with its input parameters.' Can anyone tell...
View ArticleOkta Integration
Is there any way to integrate logout functionality of okta with in Mobile app. Please help
View ArticleThe type or namespace name 'Android' does not exist in the namespace...
Hi guys. I Updated my nuget packages few days ago to new versions. but my Android project has 2 errors in MainActivity.cs: 1: The type or namespace name 'Android' does not exist in the namespace...
View ArticleApp continuously spawns and stops new threads
I noticed that even with the simplest app Xamarin repeatedly (every minute or so) spawns a new thread after finishing the old one. On android the output window fills with 'thread started' and 'thread...
View ArticleHow to create focus and unfocused for entry in mvvm pattern?
I have two entry when completing email entry it should validate the email when unfocusing the entry and on same time it should focus the password entry. Please advice
View ArticleHow to make Gallery in Xamrin Forms and select image from system gallery
How Do I Import Multiple Image from gallery and make gallery of selected photo in xamarin forms.
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How to Refresh or Recall Page
So, I have this app where I can choose a car and see the car infos... I'm displaying the car's like this I'm using the Rg.Plugins.Popup so when I click the car icon, it opens this popup with "my cars"...
View ArticleSafe to store Azure b2c details in code or do I need to obfuscate?
Hi, I've written a Xamarin Forms app (Android and iOS) that uses Azure b2c for its security. The user has to log in to b2c before they can do anything in the app. In order to facilitate the login, I'm...
View ArticleHow do I call Javascript from C# in a UWP Renderer?
How do I call a Javascript function in a UWP renderer that uses a Windows.UI.Xaml.Controls.WebView? It has to be done in the UWP Renderer, using the Windows.UI.Xaml.Controls.WebView object, not in the...
View ArticleHow to find out since which Xamarin.Forms version this feature is available?
I thought I can use the API reference to find out since which XF version Span is available. But there is only stated Latest, which is not true. Also to find something on the release blog is cumbersome....
View ArticleXamarin.Forms.Image to convert Bitmap
hello, I'm creating a project in which I need to "create" a picture in time (in fact, is an image that I have to put a aliatoria phrase). the DROID project I am editing the image as well protected...
View ArticleXamarin can't load an image from Uri
I've been trying for many days to resolve this problem. I'm using my device as emulator and when i try to load an image from url it doesn't appear on my device. When i try with a internal resource all...
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