Xamarin Form IAP error the application is not configured for billing through...
I am receiving the above error [0:] Error: Plugin.InAppBilling.Abstractions.InAppBillingPurchaseException: Unable to process purchase. I am using Plugin.InAppBilling library. My code looks like this....
View ArticleIs CoreNFC tag writing for iOS 13 coming to Xamarin.iOS?
I've been learning how to use CoreNFC in Xamarin via their documentation here: https://docs.microsoft.com/en-us/xamarin/ios/platform/introduction-to-ios11/corenfc ...but it only mentions the ability to...
View ArticleGetting a NullReferenceException in Android when backing out of app
I'm using Xamarin Forms 4.2.0 and utilizing Xamarin.Forms Shell. Pressing the back button seems to work find when navigating through the various screens in my app, however, when I press back to exit...
View ArticleBinding iOS protocol
Hi, one should think that I understood Bindings by now, but whenever it comes to iOS I face new adventures. I created an objective-c framework that contains just one single class which has a header and...
View Article'Could not AOT the assembly '...'' build error in iOS version of Xamarin...
When trying to build a Xamarin forms application with as device 'iPhone', the following error comes up: "/Users/{UserBuildHost}/Desktop/{AppName}/{AppName}/{AppName}/{AppName}.iOS/MTOUCH: Error MT3001:...
View ArticleZebra Scanner SDK for iOS
Hi, I am creating a binding project for Zebra Scanner SDK. The binding project compiles with no error but when I create an instance of it in my project, it's null. Any idea why?????????????? Here is...
View ArticleAutomatically increase the build number in xamarin forms app
Any one know how to automatically increase the build number in Android and IOS projects (whenever i do the release build)? Note: I am developing Xamarin forms app . Regards Thabo
View ArticleWriting to NFC Tags(iOS 13 beta)
As you guys probably know by now iOS 13 has added writing to nfc. I am currently trying to added this functionality the nfc sample app for ios. I have been searching around in the documentation and I...
View ArticleHow to Track Screen View for Xaml pages of Xamarin Forms using Google Firebase
Hello, I am developing xamarin forms application and I want to track screen views for xaml pages in Xamarin Forms. Is there any implementation for this?
View ArticleHow do I use the WriteNdef method in iOS 13 to write to an NFC tag?
I have implemented the DidDetectTags method as follows public void DidDetectTags(NFCNdefReaderSession session, INFCNdefTag nFCNdefTag) { session.ConnectToTag(nFCNdefTag, null); NFCNdefPayload payload =...
View ArticleDoes Xamarin OOUI implement a file and image picker.
Hello friends, I discovered Xamarin OOUI not too long and fell in love with it because I don't really enjoy working with javascript and html. For me, XAML has been excellent choice for building UI. But...
View ArticleImpossible to create APK
I'm trying to create an Archive APK for my application which works perfectly in Android emulator and compile without problems. After a few seconds of work I get the message: Archive process doesn't...
View ArticleChange BackgroundColor/Icon from SplashScreen when in dark mode?
Hi guys, Im just working on a dark mode for our apps. We are using LaunchScreen.storyboard for displaying a logo on a white background. If we are in dark mode I would like to change BackgroundColor to...
View ArticleXcode 11 and upload IPA file without Application Loader
How to upload IPA file (Xamarin.iOS app) to AppStore without Application Loader, that is removed from Xcode 11? I'm using Visual Studio 2019 for Mac. Is it possible download Application Loader utility...
View ArticleiOS App crashes with 404 on API call only in debug mode. Doesn't crash when...
In shared code I have api called by both Android and iOS. This is an api call to get a SendBird user from sendbird's api. The application makes plenty of api calls to my server and other apis prior to...
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What is the best way to implement expanding UICollectionView(Cards)?
This is what I'm trying to accomplish. The highlighted one is the card and the one not highlighted is my view that will expand / show when I tapped the card. What is the best way to implement this?...
View ArticleTrying to communicate with FTDI ft230X usb to serial device with android...
I cannot seem to get serial communications to work with FT230XQ. however I can see the device in the device list, and its product id and vendor id are correct. IDictionary<string, UsbDevice>...
View ArticleXamarin android nuget package not working
Hi Folks I could not do anything for xamarin android nuget package. All actions are generate this message: "Unable to get repository signature information for source...
View ArticleiOS 9.3.x fails at startup with VS Xamarin Forms 8.3.1
iOS 10.0 and above all work like before, but with the latest Xamarin Forms update I get at startup: 2019.10.01-13.01.44.790 (1) at System.Reflection.RuntimeConstructorInfo.InternalInvoke (System.Object...
View ArticleXamarin Forms - Android 8.0
Just had to upgrade an older Xamarin Forms app to support Firebase messaging. In that process i needed to update some libraries i ended up updating Xam Forms and didnt realize it was for 8.1 and 8.1 is...
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