Xamarin Certification Xamarin.Android Development 2

Question 1

Which Xamarin.Android control displays a scrollable list of items using view recycling?

Accepted Answer

RecyclerView

Answer

ListView

Answer

UITableView

Answer

DataGrid

Question 2

In Xamarin.Android, how do you request a runtime permission (Android 6.0+)?

Accepted Answer

ActivityCompat.RequestPermissions

Answer

RequestPermissions

Answer

PermissionManager.Request

Answer

AskPermission

Question 3

What is the purpose of the AndroidManifest.xml in Xamarin.Android?

Accepted Answer

Declares app components, permissions, and metadata

Answer

Stores string resources

Answer

Defines UI layouts

Answer

Contains database schemas

Question 4

Which lifecycle method should you override to save Activity state before it is destroyed?

Accepted Answer

OnSaveInstanceState

Answer

OnPause

Answer

OnStop

Answer

OnDestroy

Question 5

In Xamarin.Android, which class is used to run background tasks that survive Activity recreation?

Accepted Answer

ViewModel

Answer

AsyncTask

Answer

Thread

Answer

Service

Question 6

What is D8 in the context of Xamarin.Android builds?

Accepted Answer

The DEX compiler that converts .NET IL to Dalvik bytecode

Answer

A debug tool for GPU rendering

Answer

An ADB command

Answer

A layout inspector tool