Unlike native embedding, native view declaration works in Portable Class Libraries (PCLs) as well. This allows us to build very complex views, such as this color picker, with native view declaration in Xamarin.Forms. Two-way data binding propagates changes in both directions, allowing us to ensure that two views are always synchronized. Native view declaration not only supports OneWay data bindings, where changes are propagated from source to target object, but also TwoWay data bindings. Native view declaration supports data binding out of the box, so you can bind to properties of native views from within XAML. Data bindings allow properties of two objects to be linked so that a change in one causes a change in the other. The ability to add native views directly to XAML is great, but many controls also require user interaction, such as entering text. If the native control requires use of arguments, we can pass these to the native control using the Arguments XML attribute. We can access all native properties for the control directly in our XAML as XML attributes, as well as view these properties via XAML IntelliSense. Next, we can add native view directly to our XAML: The target platform is automatically selected depending on the platform the app is running on. Controls defined for XAML namespaces other than the specified target platform are ignored. This helps Xamarin.Forms find the native control added to XAML. Adding Native Views to XAMLĪdding native views couldn’t be easier! To make native views consumable via XAML, we must first add XML namespaces (markup xmlns) for each platform we’ll be embedding views from. #XAMARIN BUGZILLA UPDATE#As with all versions of Xamarin.Forms, don’t update any of the packages Xamarin.Forms will automatically update these packages if a newer compatible version is available. Xamarin.Forms 2.3.3-pre introduced support for native view declaration and bindings, so you must be using at least that version of Xamarin.Forms to use this feature. Native view declaration requires that you have the latest Stable channel release, Service Release 0, which also allows you to take advantage of the new iOS 10 and Android Nougat APIs in your mobile apps. Introducing Native View Declaration Getting Started #XAMARIN BUGZILLA HOW TO#In this blog post, you’ll learn how to add bindable iOS, Android, and Windows views directly to Xamarin.Forms XAML with native view declaration. Rather than having to write a custom renderer, you can simply add the control directly to XAML with no additional configuration. To help you easily build beautiful user interfaces with platform-specific controls, we’re proud to introduce native view declaration, allowing you to add bindable iOS, Android, and Windows views directly to XAML. For adding platform-specific controls such as the FloatingActionButton on Android, we have many different options at our disposal, from custom renderers to effects to native embedding. For implementing platform-specific features such as geolocation or bluetooth, we can take advantage of the DependencyService. One of my favorite features of Xamarin.Forms is that we have access to 100% of the controls and APIs for iOS, Android, and Windows. Xamarin.Forms ships with over 40 pages, layouts, and controls for you to mix-and-match to build great native cross-platform user interfaces.
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