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How can I resolve "Value cannot be null. Parameter name: source" exception...
Before the update to 2.4.0.38779, my iPhone Application worked just fine. After the update is crashes. I didn't keep track of the previous version of xamarin forms I was on where it worked. I tend to...
View ArticleAndroid ILocationListener in Xamarin.Forms (not an Android project)
I want to use ILocationListener but in a Forms project. Simple as that. Just like in Android you add ILocationListener to an Activity and use the OnLocationChanged method to get the device's position...
View ArticleWatchKit - WKGestureRecognizer(s)
WatchKit does not allow Gesture recognizers to be assigned to objects in code (i.e. Longpress to a button) all docs i found require a drag and drop of the Gesture type from the tool area to the object....
View ArticleAccelerate your development with Xamarin Forms & Prism (April 5th)
The San Diego Xamarin Dev's will be taking a break from the normal Hackathon format as we look at what's new in the Xamarin Forms 3.0 preview. Then we'll look at what's coming in Prism 7.1 and how to...
View ArticleSystem.TypeLoadException Could not load type CategoriesActivity
I am very new in Xamarin Application Development. I have written an Activity class with following definition [Activity(Label = "Courses", MainLauncher = true, Icon = "@drawable/icon")] public class...
View ArticleSharing violation on path PropertyStore.forms.tmp
I am seeing a huge upswing in reports of this in Insights in the past few days - seems to be mostly on Android, not iOS the stack trace is System.IO.FileStream.ctor(System.String path, FileMode mode,...
View ArticleAlert Explossion in Xamarin Forms.
Hi, I'm developing an application with Xamarin Forms 2.3.4.247 and Prism 6.3.0. I'm currently having an issue that I've been unable to solve or to identify what's causing it. When my application being...
View ArticleSystem.IO.IOException: Sharing violation on path PropertyStore.forms
Hi, On my android app, when i hit the home button or back button or try to take a picture with the Plugin.Media, i get the following error: UNHANDLED EXCEPTION: System.AggregateException: One or more...
View ArticleSystem.IO.IOException: Invalid handle to path "PropertyStore.forms"
Hi, I have an Android App built with Xamarin.forms. Everyday, HockeyApp reports crashes with the exact same error: System.IO.IOException: Invalid handle to path "PropertyStore.forms" at...
View ArticleObsolete minimum width/height request
Summary Is there any use for MinimumWidth/HeightRequest? According to this thread, they do not function as expected and will not be fixed because the fix would represent a big breaking change. If this...
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Extreme drop in editor performance after update to version 7.4 (build 1033)
Hi, after I updated Visual Studio for Mac 2017 to Version 7.4 (build 1033) the performance gets worse the longer I work. After working for two hours the performance is so bad that working is no longer...
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Xamarin crash when calling external APIs
Here is my case (that I thought was simple and common). MainPage.xaml.cs private void Button_clicked(...) { // Rely on backgound thread MessagingCenter.Subscribe<SerialLoader, SerialRec>(this,...
View ArticlePerformance Issues with VS Mac 7.4.1
Anyone else seeing a massive performance hit in VS when editing cs files with the latest build?
View ArticleHow can I Access an already existing SQLite database in mono for android
I'm fairly new to mono for android and Xamarin Studio and I'm currently working on a project where the application I'm creating needs to include a database. I've got no problems so far creating my own...
View ArticleCould not create the Java Virtual Machine
I am trying to create and .apk file of my project but when I am trying to build the project in release mode, it is giving me these errors: Could not create the Java Virtual Machine. Error: A fatal...
View Articlehttpclient not working for https service
when i use http service it works and when i try to use https that time httpclient always give 200 status .. please help
View ArticleImage inside of Carousel View
I have a carousel view inside a stasklayout which is also inside a scroll view, the carousel view contains an image which is displayed in miniature, I want that the image is displayed in actual...
View ArticleException while trying to connect a server w/o a certificate
Hi, When I debug my app, I get exception on the line of code: System.Net.ServicePointManager.ServerCertificateValidationCallback = (sender, certificate, chain, sslPolicyErrors) => true; The...
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Tableview - disallow row selection
I have a tableview which I'm using for a settings page. This tableview contains a row with a switch. I would like to disable the selection of the row containing the switch, while keeping the switch (or...
View ArticleUnable to Load SDK Information Android SDK Manager in Visual Studio 2017
I am running Visual Studio Enterprise 2017 (Version 15.5.7). I am coming from a corporate network and when I try to open the Android SDK Manager, I see the error - "Loading SDK component information...
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