Just to add an example. Imagine you have an async method DoAnyWorkAsync if you call it (just as an example) this way: DoAnyWorkAsync().ContinueWith ((arg) => { StatusLabel.Text = “Async operation completed…”; }); StatusLabel is a label you have in the XAML. The code above will not show the message in the label once the async … Read more
Jan, Since you’ve used a list view and your commands are inside the DataTemplate, the binding is attached to the binding context of the each individual model in the ItemSource. A way around this is do do the following: <ListView Grid.Row=”1″ x:Name=”ArbeitsEinträgeList” ItemsSource=”{Binding EintragList}” SelectedItem=”{Binding SelectedItem}”> <ListView.ItemTemplate> <DataTemplate> <ViewCell> <ViewCell.View> <Grid x:Name=”Item”> <Grid.ColumnDefinitions> <ColumnDefinition/> <ColumnDefinition/> … Read more
With .NET 5 Microsoft begins the journey of unifying the .NET platform, bringing .NET Core and Mono/Xamarin together in one base class library (BCL) and toolchain (SDK), more about it here. .NET MAUI is a name for a new upgraded solution as a Multi-platform App UI framework for building native cross-platform apps with .NET for … Read more
AspectFit does what it says on the tin, it will fit the whole image into the View, which may leave parts of the view empty. Straight from Xamarin’s documentation: Scale the image to fit the view. Some parts may be left empty (letter boxing). What you’re looking for is AspectFill, which will scale the image … 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>
What we did in our forms application was to make use of the Device.Timer and the Stopwatch class that available in System.Diagnostics, and Xamarin.Forms to create a very generic managed timer that we could interact with using the onStart, onSleep and onResume methods in Xamarin.Forms. This particular solution doesn’t require any special platform specific logic, … Read more
In Xamarin.Forms 1.3 and greater you can use NavigationPage.SetHasBackButton(this, false); In Xaml you can add: <ContentPage ….NameSpaces etc…. NavigationPage.HasBackButton=”False” Title=”MyPage”> </ContentPage>
It can be done this way too using Properties Dictionary for storing data: Application.Current.Properties [“id”] = someClass.ID; for fetching data: if (Application.Current.Properties.ContainsKey(“id”)) { var id = Application.Current.Properties [“id”] as int; // do something with id } ref: https://developer.xamarin.com/guides/xamarin-forms/working-with/application-class/#Properties_Dictionary
You can put Theme parameter to ApplicationAttribute of your main activity like this [assembly: Application(Icon = “@drawable/Icon”, Theme = “@android:style/Theme.Holo.Light”)] Or you can put this string to AndroidManifest.xml <application android:theme=”@android:style/Theme.Holo.Light” />
A ContentPage is a Page that is intended to fill the display. A ContentView is a View that can be contained within a Page or within another View. Both have a Content property that contains child content – either a single View, or more commonly a Layout containing multiple Views.