System.MissingMethodException: Default constructor not found for type...
Hi Folks, I created a small project that uses a custom control. I'm trying to run this project and I get the error message: System.MissingMethodException: Default constructor not found for type...
View ArticleHow to make a translated button clickable?
I'm trying to make a drop-down menu. The way I tried to do this was adding buttons in an AbsoluteLayout and giving them TranslateY in a for loop. The problem is, the buttons are not clickable, and are...
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Toolbar area stays visible when navigating to a page without toolbaritems...
Hi, I'm having some trouble with the toolbar on WinPhone. When navigating from one ContentPage with toolbaritems to another without toolbaritems, the second page shows a black area (where the toolbar...
View ArticlePlay Services 25 --> results in hundreds of "does not contain a definition...
I'm using a package (Kinvey Android) that requires Google Play Services 25 (all of them). This results in hundreds of errors like "Resource.designer.cs(141,141): Error CS0117:...
View ArticleVisual Studio reporting errors (Value cannot be null) since last set of...
Since applying the latest Xamarin updates, Visual Studio is reporting the following error: ERROR: Value cannot be null. Parameter name: project Unfortunately, with so much software auto-updating these...
View ArticleIs it possible to build a multi-language application using Forms?
I have been trying to follow a Microsoft tutorial shown here And have got: <Button x:Uid="Greeting" Text=""/> And a resource file in my PCL with Greeting.Text with value Diary.. But I have...
View ArticleXamarin.Forms and MVVM
Hello, i decided to create a mobile app with xamarin.forms. My goal is to use the mvvm architecture in my xamarin.forms app properly. Is there any sample app which uses this architecture? I prefer to...
View ArticleXamarin.Forms and EntityFramework 7
With the latest release (RC1) of EF7, is it possible to use EF7 with SQLite in a Xamarin.Forms project for iOS, Android, Win 8.1, WinPhone 8.1 and UWP? If so, does anyone have an examples? Is there a...
View ArticleUsing Entity Framework 7 RC1 with SQlite on Xamarin.Forms
Can Entity Framework 7 RC1 be used with Xamarin.Forms? If so, please provide an demo example with simple CRUD operations. Thanks.
View ArticleHow to make the screen visible for 20 seconds or more in the Xamarin forms
Hi I have 3 content pages here first.cs second.cs third.cs In First.cs I have following code snippet. Button b=new Button(){ Title="Submit" }; b.clicked+=(){ //Here I would like to call the second page...
View ArticleXamarin Forms localization strings not showing up on Galaxy s3
I'll make this quick. I have a Xamarin Forms app, and I am testing the localization feature on a Galaxy S3 device. In the Emulator, the strings change without issues, both in XAML and code behind, when...
View ArticleXamarin 4 What more can we expect?
Xamarin 4 has been launched with some great new features like iOS Apps in Visual Studio, XIB Launch Screens, tvOS with Xamarin. Are there any other aspects of this release that I can leverage while...
View ArticleBindingContext of Buttons within a ListView template
So I'm having a little trouble with Command binding within a ListView template here. This is my XAML code: <ListView ItemsSource="{Binding AvailableExams}" ItemTapped="ItemTapped"...
View ArticleWindows 8.1 / Windows phone 8.1 / Windows 10 related issues
Hi I have a published application built on Xamarin.Forms for Android and iOS and unrelated version for Windows Store. Recently I dove into migrating my Windows Store version to Xamarin.Forms. Windows...
View ArticleError Code CS0117: Resource does not contain a definition for Animation - on...
I get this error while updating NuGet package Xamarin.Forms from v1.5.1.6471 to v2.0.0.6490. Why is it occurring? What is the resolution?
View ArticleDoes Xamarin.Forms support F#?
Does Xamarin.Forms support F#? I do not see Xamarin.Forms projects under F#.
View ArticleHide TableSection header on Android
Passing empty string does the job on iOS new TableSection("") How to do the same for Android?
View ArticleFile Picker not working
Hello i'm using acr-xamarin-forms to allow user to select file in my app. I'm using following code var device = Resolver.Resolve (); var mediaPicker = DependencyService.Get (); if (mediaPicker == null)...
View ArticleImage compression in xamarin.forms
MediaFile result = await mediaPicker.TakePhotoAsync ( new CameraMediaStorageOptions { DefaultCamera = CameraDevice.Rear, }); Image CaptureImage = new Image { HeightRequest = 35, WidthRequest = 35,...
View ArticlePPI/DPI of current Device
Hi there How can i get current DPI/PPI of the device, for example iPhone 3 had 193something ppi while iphone 4 had 320 something ppi. Thanks
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