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Xamarin Mobile Application Development for Android, Second Edition

You're reading from   Xamarin Mobile Application Development for Android, Second Edition Develop, test, and deliver fully-featured Android applications using Xamarin

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Product type Paperback
Published in Aug 2015
Publisher Packt
ISBN-13 9781785280375
Length 296 pages
Edition 1st Edition
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Toc

Table of Contents (13) Chapters Close

Preface 1. The Anatomy of an Android App FREE CHAPTER 2. The Xamarin.Android Architecture 3. Creating the Points Of Interest App 4. Adding a List View 5. Adding a Details View 6. Making Your App Orientation-aware 7. Designing for Multiple Screen Sizes 8. Creating Data Storage Mechanisms 9. Making POIApp Location Aware 10. Adding the Camera App Integration 11. Publishing an App to the App Store Index

Creating POIListViewAdapter


In order to create POIListViewAdapter, we will start by creating a custom adapter as follows:

  1. Create a new class named POIListViewAdapter.

  2. Open the POIListViewAdapter class file, make the class a public class, and specify that it inherits from BaseAdapter<PointOfInterest>.

Now that the adapter class has been created, we need to provide a constructor and implement four abstract methods.

Implementing a constructor

Let's implement a constructor that accepts all the information we will need to work with to populate the list.

Typically, you need to pass at least two parameters: an instance of an activity because we need the activity context while accessing the standard common resources and an input data list that can be enumerated to populate the ListView. The following code shows the constructor from the code bundle:

private readonly Activity context;
private List<PointOfInterest> poiListData;
public POIListViewAdapter (Activity _context, List<PointOfInterest...
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