Data Best Practices Opinions
Developing an Xamarin Android app that is data centric. A set of activities that make API calls and display the response. Currently I am making the API calls from the activity. Things work but what is...
View ArticlePreviewer background colour or style setting?
Hi, when I use the Xamarin Forms Previewer in Visual Studio 2017 (15.6.7) my app is shown in 'dark' mode or style i.e. has a black background, text is white (or light gray) yet when I run the app on my...
View ArticleXamarin forms android - disables SSL CA validation
Hello we are facing a security problem with apk, there's a application validating our apk (Appthority) and reports this: Disables SSL CA Validation [ { "status": "DISABLED", "hostname":...
View ArticleDetect a person's anthropometric measurements with the camera
Hello, I have to develop an app that has to detect a person's anthropometric measurements with the camera. Can uou help me? Thanks.
View ArticleExternal USB webcam plugin for Xamarin.Android
Hi! Did anybody ever tried to attach external USB webcamera by OTG cable to Android device and take photo or video using this camera? There are several applications in Play Store which can demonstrate...
View Article(iOS) Button Click doesn't get hit when adding Grid layout (xaml)
I created simple blank Xamarin forms project. When I add the Grid layout object to my xaml, button clicks don't get hit. If I remove the grid, button clicks code is getting hit. Any ideas what is...
View ArticleApp xamarin + website
Hello good day, I have the following problem if someone could guide me. I'm creating a mobile application for android and ios, and I would like to know how I can create a web page and synchronize the...
View ArticleListView not updating UI when changing bindable property from ViewModel
Hi there, everyone! I have a simple listview on my Xamarin application which contains iterates over the menu items from an ObservableCollection: <views:MenuItemsListView x:Name="_menuItemList"...
View ArticleBroadcast receiver not firing on receive
Here is my broadcast receiver code: [BroadcastReceiver] [IntentFilter(new[] { BluetoothDevice.ActionFound })] public class BlueToothDeviceBroadcastReciever : BroadcastReceiver { public override void...
View ArticleXamarin iOS Notifications (Dependency Service)
Hi, I have a really weird problem, I hope you can help me. I am implementing notifications in a Xamarin.Forms project, working in both android and iOS platform. To do so, I have to use Dependency...
View ArticleChange Button Text
I'm using Xamarin Forms to develop a Cross-Platform app. I want to change the Text of the button "Start Job" to something like "Finish". When clicking StartJob and then change to Finish Job.
View ArticleLocalBroadcastManager - where is it?
Has anyone used LocalBroadcastManager with their App? I have not been able to type in class package out in anyway that Visual Studio will recognize there is such a class. I am only able to use...
View ArticleHow to get an original image size?
Hi! I have the very basic case, but can't find elegant solution: need to know original image size for layout. But after loading an image to Image view I get -1 value for its width and height. Here's a...
View ArticleWhy is this frame cut off?
I am confused why the Frame in this XAML is being cut off. <?xml version="1.0" encoding="utf-8" ?> <ContentPage xmlns="http://xamarin.com/schemas/2014/forms"...
View ArticleGenerated Bindings Remove Generics
I am trying to bind an abstract class that uses generics: public abstract class ResponseCallback<T> { public ResponseCallback() {} public abstract void onResponse(Response<T>...
View ArticleButton Text Getting Cutoff on Android
The text of my buttons are getting cutoff in Android when I have made the HeightRequest of the button smaller than the default. The same thing renders normally with the button text centered on iOS....
View ArticleXamarin forms local database
I am trying to implement a database following this: https://docs.microsoft.com/nl-nl/xamarin/xamarin-forms/app-fundamentals/databases But I am getting an aggregate.exception on the main() function when...
View ArticleCan not find Android App template after I re-installed VS2017
Before I Re-Installed VS2017 When I followed the instructions Click > New > Project to create a new project. In New Project dialog, click the Android App template I found Android. But since I...
View Article[You need to increase the $(TargetFrameworkVersion) for your project] warning
After upgrading Visual Studio 2017 to version 15.8, my android project is getting the following warning: The $(TargetFrameworkVersion) for App3.Android.dll (v9.0) is greater than the...
View ArticleWhat's the best/simplest library for creating and displaying a QR code based...
I've got a Xamarin app that have iOS and Android versions (.NET Standard business layer). I've been asked to add a QR code to one of the screens. It'll encode a short string. I can't talk out to an API...
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