Xamarin Certification Xamarin.iOS Development

Question 1

Which class is the entry point for a Xamarin.iOS application?

Accepted Answer

AppDelegate

Answer

AppDelegate is the entry point for a Xamarin.iOS app and handles application lifecycle events.

Question 2

What attribute is used to register a Xamarin.iOS class with the Objective-C runtime?

Accepted Answer

[Register]

Answer

The [Register] attribute maps a C# class to its Objective-C counterpart in the runtime.

Question 3

In Xamarin.iOS, which method do you override to set the initial view controller programmatically?

Accepted Answer

FinishedLaunching

Answer

FinishedLaunching in AppDelegate is overridden to configure the window and root view controller.

Question 4

What is the purpose of the [Export] attribute in Xamarin.iOS?

Accepted Answer

Exposes a C# method to Objective-C selectors

Answer

The [Export] attribute exposes a C# method as an Objective-C selector so it can be called by the runtime.

Question 5

Which Xamarin.iOS class is used to display a list of items using a table-based layout?

Accepted Answer

UITableView

Answer

UITableView is the native iOS control for displaying scrollable lists and is used directly in Xamarin.iOS.

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