Xamarin - deliver native apps for iOS, Android and Windows

Discover how Xamarin.Android creates native Android apps with C# using just-in-time compilation, Java bindings, and access to Android APIs.

Create and configure Android projects in Xamarin Studio, explore templates, libraries, and packages, and build a hello world app with debugging, breakpoints, and emulators.

Create a contact list user interface in Xamarin by wiring a list view and add button, implementing a list adapter with a contact model using density independent pixels for layouts.

Implement the contact list adapter by completing abstract methods, wiring a private contacts field, and using GetView to inflate a layout and reuse views to render contact name and phone.

Create a responsive interface by adding density-specific drawable resources, styling text colors and padding, and displaying icons with image views; optimize the list with a view holder pattern.

Implement the view holder pattern in Xamarin to inflate views, map the convert view's tag to a view holder, and bind text and image views for a sample contact list.

Create a new add contact activity, design a form for name, phone and email, and handle data transfer between activities using start activity for result and on activity result.

Learn how to create a new contact from text fields and pass it to the main activity using intents, extras, and JSON serialization in Xamarin native apps.

Connect the delete object functionality and integrate external apps using icons to launch Android apps from contact list, handle long-click events, and present an alert dialog builder to confirm deletion.

Learn to integrate a Xamarin Android contact list with external apps using intents, handling click events, and launching mail and dial actions with data extras.

Learn how Xamarin.iOS binds Apple APIs to C# to deliver fully native iOS apps and build a contact list UI with storyboards.

add an iOS project to a Xamarin solution, choose templates, configure bundle IDs and minimum iOS version, and use Xcode Interface Builder storyboards to build a contact list.

Learn to implement storyboard-based navigation using a navigation controller, connect view controllers with segues, and configure a main view and add contact view with a navigation bar.

Build a Xamarin iOS interface by adding a table view, applying constraints, creating outlets, and wiring a contacts table view cell with data from the model.

Build a contact list user interface by configuring a table view cell with name and phone labels, icons and assets, and wiring the data source to a single-section contact list.

Create a contact form in the ad contact view with name, email, and phone fields and an add button; pass the contact to the main controller and refresh the list.

Implement a swipe-to-delete gesture in a Xamarin iOS Contacts list, displaying a delete alert and launching external apps such as mail and phone with canOpen checks and not-supported handling.

Learn to run and edit Xamarin iOS and Android projects in Visual Studio on Windows, deploy solutions from a virtual machine, and use built-in designers for code, assets, and storyboards.

Explore the basics of sharing code across platforms, comparing shared projects and portable class libraries (PCL), and learn how conditional compilation enables platform-specific behavior.

Explore factory patterns, service locators, and dependency injection to manage platform dependencies in Xamarin, showing how constructors inject services, runtime variants emerge, and tradeoffs include maintenance, visibility, and performance.

Learn how to share code across iOS and Android by using a shared project and a portable class library, sharing the contact model and contact list datasource.