Problem with Xamarin Forms build. System.IO.FileNotFoundException
I have been successfully building my app for the past few months, but then this happened: Severity Code Description Project File Line Suppression State Error The "LinkAssemblies" task failed...
View ArticleHow do I save my keys to the keychain on iOS for later use?
Hi, I was told Keychain is a good option for storing my private and public keys. My keys are in clear text XML format. Do I need to encrypt private keys before putting on Keychain? From Xamarin and...
View ArticleHow to convert Xamarin.Forms.Image ToBase64String?
Hello everyone! I have Xamarin.Forms.Image or image file in project (embedded resource). I need convert to ToBase64String, but I don't know how get byte array. If I try use System.Drawing.Image then I...
View ArticleEnhancing performances by not using xaml and/or bindings
Hello everyone, my boss is always pushing for performances and told that PROBABLY the app performances would have a huge boost if I didn't use Bindings or even XAML at all. I like to use MVVM so I...
View ArticleList to ObservableCollection with INotifyPropertyChanged
Hi Guys, i have the following Property: public ObservableCollection List { get { if (list.Count == 0) { // query database and return list List tempList = QueryDataBase(); list = new...
View ArticleOffline/Online Apps
Hi all, i am new in xamarin forms. i want to develop a app which has offline and online system. i wanna to do this system without azure. i want to sync database to my remote SQL server database, local...
View ArticleHow to do authentication from Xamarin.Forms mobile app to on-premise...
Hi All, I am trying to do authentication in my Xamarin.Forms mobile app with on-premise SharePoint server. I am following Microsoft SharePoint documentation: Sample code is: string SharePointUrl =...
View ArticleProbelm with Visual State Manager and Entry && firing keyboard
In the first part , the code i use with a grid , I have to clique 2 times on entry filed to fire the keyboard , while in second part with no grid , only from the first time and I can't understand why...
View ArticleTime needed to publish an APP on iTunes.
It is normal that, to publish a trivial APP on iTunes it takes weeks? from Apple I make continuous observations on the use of GPS, and a series of questions regarding any payments in the APP ...
View ArticleGoogleServicesJson
Hello, in this Firebase getting started: https://components.xamarin.com/gettingstarted/firebase-analytics "Set the Build Action for your google-services.json file to GoogleServicesJson. " What are the...
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itunes Connect not showing build
I have created new app on the app store and uploaded the first build through app loader. Initially after successful upload, I got emails for issues in the app and I resolved them and uploaded again....
View ArticleImage Processing
Is there any sample or reference available which I can refer to do the following task. I want to match user's face with his already stored pic. So when I open camera in front of the person, it should...
View ArticleFacial Recognition & Tracking in Xamarin.Forms
Is there any sample or reference available which I can refer to do the following task. I want to match user's face with his already stored pic. So when I open camera in front of the person, it should...
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Problems testing with Android emulator
Hi, I want to run my first Xamarin Forms App in Visual Studio 2017, clicking on start button gives me When i click 'Open Android Device Manager' , nothing happens I also installed the android emulator,...
View ArticleXamarin.Forms.Portable Android MainActivity.OnCreate() - An unhandled...
Hi, Using VS2013, Win8.1. In a Xamarin.Forms.Portable project, in the Android project I have the following code: [Activity(Label = "XamarinFormsPortable", MainLauncher = true)] public class...
View ArticleCan I change MobileServiceClient url in an Xamarin.Forms app
My customer is requesting if they can access both our Azure development and the live back end environments from one app. All of the tables are the same between the two environments so I added a toggle...
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How to change language(Localisation)
Hi I am not able to change language by clicking on button, I have used Multilingual.Plugin , it showing only in English even if i click on Fench it doesnt change..please help me with this public...
View ArticleHow to navigate from webview to application and from webview to new page of...
Hello All, I have three pages A, B, C, a) page A which navigate to page B(here page A is navigation page). b) page B have webview in it. So it load webview. After completing task when I click back icon...
View Article[Xamarin.Forms 2.5.0.91635][Android] Soft Keyboard overlaps the last entry at...
[Xamarin.Forms 2.5.0.91635] I have a page which has a listview which contains an input entry and a label. My problem is that in Android, on tapping the first or second entry, the Keyboard appears. I...
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