Can't Open WhatsApp in xamarin ios
how can I open WhatsApp from my app to a specific number? For Android, the following is working fine But it didn't work in IOS. What's App Open and then Show Message (This Link couldn't be opened Check...
View ArticleError in 'Standalone_badge_offset.xml'
Hi, I'm trying to resume Xamarin.Forms project created over a year ago as all development was suspended till now. It targets Android and iOS. iOS part compiles and runs fine, but Android gives this...
View ArticleXamarin Forms: Prism: Android: Open a page when clicks on Push Notification
Hi, We are implementing Push Notification in our app. For iOS, we didn't see much challenges, but with Android, stuck at navigation. When click on notification alert, need to navigate to MainPage as...
View ArticleHow to add Firebase in Xamarin Forms ?
Hello everyone , I am developing my 1st app ,and I never used FireBase before ... Can anyone tell me a great tutorial or a link , where it tells all how to connect firebase with xamarin forms
View ArticleUpgrade project from Android 9 to Android 10
Hi, I'm trying to upgrade my project from Android 9 to Android 10 in Visual Studio 2019. But when I'm trying to rebuild the solution, I get this error message: Could not find 31 Android X assemblies,...
View ArticleHow i can make a route and then navigate like google maps or uber?
I can from my app open google maps but the client don't wanna that. He want a map in the app
View ArticleCan you have more then one line in one DisplayAlert?
So i have this code and i was thinking about if you can have more then one line of text? await DisplayAlert("Contact","Name: " + Contact.Fullname, "Close");
View ArticleNo valid iOS code signing keys found in keychain. You need to request a...
Hi guys So I have build a Xamarin Forms application, that I now want to test on a physical iOS device. The debugger successfully run my program, but unfortunately I run into problems when I deploy my...
View ArticleGetting (com.apple.AuthenticationServices.AuthorizationError error 1000)
Getting (com.apple.AuthenticationServices.AuthorizationError error 1000) on calling AppleSignInAuthenticator.AuthenticateAsync(). I added apple signin key 'com.apple.developer.applesignin' in...
View ArticleBindable property not being updated
I have a custom control that extends from content view: <ContentView Opacity=".8" BackgroundColor="#fafafa" VerticalOptions="FillAndExpand" HorizontalOptions="FillAndExpand"...
View ArticleHow does one Cancel a subscription in In App Billing?
Hello, I'm using this billing plugin: https://nugetmusthaves.com/Package/Plugin.InAppBilling and the code is here: https://github.com/jamesmontemagno/InAppBillingPlugin Developed by @JamesMontemagno If...
View ArticleCheck if renewable subscription is active (Plugin.InAppBilling)
Hello, I am using the InAppBilling plugin to purchase different subscriptions. My problem is, I don't know how to check if a renewable subscription is active. I tried to get this information like this:...
View ArticleBug ? CarouselView ScrollTo(..) in UWP?
Hey, is the function ScrollTo in CarouselView in UWP working? Working fine in Android, but on UWP its not navigating to the right View. I created a fresh project with three Buttons to navigate through...
View ArticleFCM token for push notifications - FirebaseInstanceId.Intance.Token obsolete
Hey everyone. All the examples I see for getting the FCM token in Xamarin use FirebaseInstanceIdService which gives a warning it is is depreciated and obsolete. The code snippet below is an example how...
View ArticleI want to make Live Chatting app using Api
I am new for using Xamarin. i want to make Chatting messenger using Api. I already setup all User's Id and Password. I want to make Live Chatting app based on this user database. I google for this one...
View ArticleMessagingCenter.Subscribe exceptions
Hello, What are the circumstances that would cause the following call to throw an exception? MessagingCenter.Subscribe<MyClass>(this, "testmessage", OnTestMessage); I'm getting "Index was outside...
View Articlexamarin build error
I have open 2017 project from 2019. Now i am getting this error. my Xamarin.Android.Support.Core.Utils version is 27.0.2 and Xamarin.Android.Support.v4 is 23.4.0.1 The type 'FileProvider' exists in...
View ArticleFirebaseApp is not initialized on real devices
Hello! I'm trying to add push notifications in Xamarin.Forms. On Genymotion it's work fine but on real devices i have an error: Default FirebaseApp is not initialized.Make shure to call...
View ArticleDuplicate 'EmbeddedResource' items were included after migrate to .NET Standard?
Hi, Using VS 2017 15.4.0 Following James Montemagno "Upgrading to Xamarin.Forms to .NET Standard"...
View ArticleNull reference exception in production at...
I am facing null reference exception in production at but not able to reproduce in dev. I am not getting any idea where is this coming from. Have anybody faced this? The whole stack trace is below:...
View ArticleHow to access both Photo and video feature from Camera Media Plugin in...
How to access both Photo and video feature simultaneously from Camera Media Plugin in Xamarin.Forms? Example: Pressing camera would open the camera, but there would be the ability to swipe to select...
View ArticleWhy Glyph property in FontImageSource doesn't bind?
Hi community. I have a strange behavior with FontImageSource. I can't get property binded to Glyph. <ContentPage.BindingContext> <documents:DocumentListViewModel />...
View Articleis it possible to implement NFC in xamarin forms?
I have been trying with sample plugin but i am not able to figure out how to implement NFC read/Write for Android/iOS using a plugin.if it is possible share some sample code which would help me
View ArticleHow to vertically center an item in a grid cell?
I have a ListView item template that contains a grid with 3 columns: an image, a label and another image. All items are have their VerticalOptions set to LayoutOptions.Center. However, the list...
View Articlebest approach to handle dark theme?
I'm working on an app for UWP, Android, and iOS using Xamarin.Forms. I just started testing on my iPhone 8 which is set to dark mode and noticed that text in the ListView controls is not visible. The...
View ArticleHow to setup bindingcontext in xaml?
Hello, I usualy setup the binding in the view in this way: _viewModel = new UserPageViewModel(mgr); BindingContext = _viewModel; What is the same command in the xaml? The following is not working: Can...
View ArticleHow can i make a game in unity and run the game when i run xamarin.forms...
Hi, I just came xamarin crash I want to make a game project that should be called from unity, how can I do it, help guide me
View ArticleRemove gap between cells in ListView
Hi, We are having a problem with gaps between cells in a ListView. We set SeparatorVisibility="None" but still there are a 1-pixel high gap in some cases. On iOS is seems to be connected with the...
View ArticleCan any one please can help me with my problem with BindingContext?
Hi, everyone I need help for my problem. I am trying to bind the context from the viewmodel like this <ContentPage.BindingContext> <viewModels:BLEConncetViewModel/>...
View ArticleShare from Xamarin Essentials mysteriously quit working after updates, but...
I updated my iPad to 13.2, updated to latest XCode on my mac, updated VS, updated to XF 4.3. I know, not smart. Everything appeared to work, until I tried the SHARE function of my app on iPad. The...
View ArticleError using MySql connector with Xamarin
Hi, I am trying to use MySql plugin in Xamarin project. I have added the pliugin to all my PCL projects and the used: sql_connection = new MySqlConnection("Server=mysql.mydomain.com; Database=mydb;...
View ArticleHow to prevent multiple clicks on a button?
I know there are many ways to prevent multiple clicks on a button in Xamarin, but is there a single solution to prevent it globally? i.e. in every button in my app. Otherwise, what would be the best...
View ArticleOneSignal HandleNotificationOpened redirect the diffirent page
Hello in my project I use OneSignal for notifications. How can I redirect the different page from droid or ios project. I used passing parameter to LoadApplication(new App(bool...
View Articlehow to do smooth scrolling in collectionview on android and ios
Hi, My app has some Collectionview. Items binded when scrolling down but when items bind and scrolling collectionview is jittering on android and iOS. How to do smooth scrolling in collectionview....
View ArticleBinding Mode property default value
I'm seeing documentation about XAML, bindings and MVVM. The documentation about BindingMode says that: OneWay: Indicates that the binding should only propagates changes from source (usually the View...
View ArticleGet counrty code picker or popup
Hello guy's my question is , that is there any plugin for get all country code for telephone in xamarin forms. i'm surfing in google and get one thing CCP (country code picker ) for native android but...
View Articleintegrate an image editor
Hi, I want to integrate an image editor (similar to adobe creative SDK or Img.ly SDK) into xamarin.forms app, can anyone please suggest me a cross platform image editor?
View Articleis there any Framework or Library for Photo editing ?
Hey , im looking for a framework or library support PCL for photo editing , i want to develop an app for image editing like drag text and drag photos and icons to the main photo , if there is an...
View ArticleTabbedPage Icons
I have killed many, many hours now trying to make icons appear for Tabbed Pages on iOS. According to all of the forum and blog posts I've seen this is supposed to be super simple. In fact my page is...
View ArticleOpen mobile camera in webview
I'm building an application where i load website in a webview. On website i open device camera ( take pics etc ) and its working perfectly fine on all browsers but when i load same application in...
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