The solution that worked for me: Uninstall Xamarin.Forms: Right Click Solution -> Manage NuGet Packages -> Uninstall Xamarin.Forms -> Restart VS Then remove build platforms: Right Click Solution -> Properties -> Build -> under Targeting select Change -> Remove platform(s) -> Restart VS Reinstall Xamarin.Forms: Manage NuGet packages -> Search for Xamarin.Forms -> Install -> … Read more
This is a scenario which is easily resolved with dependency injection. Have a interface with the desired methods on your shared or PCL code, like: public interface IUserPreferences { void SetString(string key, string value); string GetString(string key); } Have a property on your App class of that interface: public class App { public static IUserPreferences … Read more
UPDATE: The original answer is not useful, see below for updated answer. The issue was the PCL library was very slow and consumed too much memory. ORIGINAL ANSWER (do not use): I found an image I/O library, ImageTools-PCL, which I forked on github and trimmed down what wouldn’t compile in Xamarin, keeping the modifications to … Read more
When you build your iOS project, you should have the .app file in the bin/iPhone/Release directory. Or, if you have the .ipa file, you can extract the .app from that with. You can rename the file to have .zip and extract. The .app will be in the Payload folder. On Windows, it can be a … Read more
Z-Index is established by the ordering of the Child elements in a container element. The first child is at the back of the Z stack, the second child is placed above it, and so on. The layout container you are using will dictate how each child is positioned. A StackLayout will not allow overlaps. AbsoluteLayout … Read more
No need third party libraries.. No need to pay.. Just add these two classes & Implement your swipe listeners Step 1: Copy paste these two classes SwipeListener.cs using System; using Xamarin.Forms; namespace SwipeLib { public class SwipeListener : PanGestureRecognizer { private ISwipeCallBack mISwipeCallback; private double translatedX = 0, translatedY = 0; public SwipeListener(View view, ISwipeCallBack … Read more
As of Xamarin Forms 2.3 CarouselView does just that, and more. Read more here. <ContentView HorizontalOptions=”FillAndExpand” VerticalOptions=”FillAndExpand”> <CarouselView ItemsSource=”{Binding MyDataSource}”> <CarouselView.ItemTemplate> <DataTemplate> <Label Text=”{Binding LabelText}” /> </DataTemplate> </CarouselView.ItemTemplate> </CarouselView> </ContentView>
When i encountered that challenge in a project I resolved it by using a simple class ResourceLoader and making use of INotifyPropertyChanged. You can access the Instanceproperty from anywhere and change the culture. All String that are bound to the index would update. The ResourceManager instance injected into the constructor must be set up appropriately. … Read more
I am using this hack: put the WebView in a Grid and insert a BoxView in the same cell. Then put a handler on the BoxView.
This can be used with a stream (if you’re using the Media Plugin https://github.com/jamesmontemagno/MediaPlugin) or standard byte arrays. // If you already have the byte[] byte[] resizedImage = await CrossImageResizer.Current.ResizeImageWithAspectRatioAsync(originalImageBytes, 500, 1000); // If you have a stream, such as: // var file = await CrossMedia.Current.PickPhotoAsync(options); // var originalImageStream = file.GetStream(); byte[] resizedImage = await … Read more