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1. FRAGMENT DEFINITION HOW TO
2. FRAGMENT DEFINITION INSTALL
3. FRAGMENT DEFINITION ANDROID
4. FRAGMENT DEFINITION CODE

The functionality of each flash card, and a FragmentPagerAdapter isĬreated to connect the ViewPager to the fragments created from data In the following sections, a FlashCardFragment is create to implement When you build and run this code, you should see a display thatĪt this point, the ViewPager is empty because it is lacking theįragments that are used populate the ViewPager, and it is lacking anĪdapter for creating these fragments from the data in Instantiates a new FlashCardDeck as the data source. Retrieves a reference to the ViewPager from the layout. Sets the view from the Main.axml layout resource. ViewPager viewPager = FindViewById(Resource.Id.viewpager) įlashCardDeck flashCards = new FlashCardDeck() Replace the OnCreate method with the following code: protected override void OnCreate(Bundle bundle)

FRAGMENT DEFINITION HOW TO

MainActivity is derived from FragmentActivity (rather thanĪctivity) because FragmentActivity knows how to manage the support Set up ViewPagerĮdit MainActivity.cs and add the following using statements: using 4.View Ĭhange the MainActivity class declaration so that it is derivedįrom FragmentActivity: public class MainActivity : FragmentActivity You must use the fully-qualified name 4.view.ViewPagerīecause ViewPager is packaged in a support library.

This XML defines a ViewPager that occupies the entire screen. Open Resources/layout/Main.axml and replace its contents with the following XML:

FRAGMENT DEFINITION CODE

The source code to FlashCardDeck is available atĭownload this source file (or copy and paste the code into a newįlashCardDeck.cs file) and add it to your project. Understanding ViewPager, the FlashCardDeck code is not listed here. This line of code retrieves the corresponding answer to the previous problem: string answer = flashCardDeck.Answer īecause the implementation details of FlashCardDeck are not relevant to For example, theįollowing line of code retrieves the fourth flash card problem in theĭeck: string problem = flashCardDeck.Problem The collection of flash cards in FlashCardDeck is organized such thatĮach flash card can be accessed by an indexer. The FlashCardDeckĬonstructor requires no arguments: FlashCardDeck flashCards = new FlashCardDeck() FlashCardDeck contains a ready-madeĬollection of math problems and answers. Represented by the FlashCardDeck class this data source supplies the In FlashCardPager, the data source is a deck of flash cards

FRAGMENT DEFINITION INSTALL

Walkthrough: Including a NuGet in your project).įind and install the 4 package asĮxplained in Viewpager and Views. The NuGet Package Manager (for more information about installing NuGet

FRAGMENT DEFINITION ANDROID

Start an App ProjectĬreate a new Android project called FlashCardPager. Not yet familiar with fragments in Xamarin.Android, see This guide does not cover the basics of fragments – if you are InįlashCardPager, most of the work will be done by a Fragment in Most of the work was done in MainActivity lifecycle methods. This app creates a Fragment instance for eachįlash card and implements an adapter derived from Left and right through the flash cards and taps on a math problem to Each flash card is implemented as a fragment. Walkthrough, ViewPager is used to create an app calledįlashCardPager that presents a series of math problems on flashĬards. ViewPager is often used in conjunction with fragments so that it isĮasier to manage the lifecycle of each page in the ViewPager. This guide explains how to implement a swipeable UI with ViewPager, using Fragments as the data pages. Gestural navigation allows the user to swipe left and right to step through pages of data. ViewPager is a layout manager that lets you implement gestural navigation.