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Xamarin Mobile Development for Android Cookbook

You're reading from   Xamarin Mobile Development for Android Cookbook Over 80 hands-on recipes to unleash full potential for Xamarin in development and monetization of feature-packed, real-world Android apps

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Product type Paperback
Published in Nov 2015
Publisher
ISBN-13 9781784398576
Length 456 pages
Edition 1st Edition
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Author (1):
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Matthew Leibowitz Matthew Leibowitz
Author Profile Icon Matthew Leibowitz
Matthew Leibowitz
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Table of Contents (15) Chapters Close

Preface 1. Working with Xamarin.Android FREE CHAPTER 2. Showing Views and Handling Fragments 3. Managing App Data 4. Presenting App Data 5. Communicating with the Outside World 6. Using Background Tasks 7. Notifying Users 8. Interacting with Other Apps 9. Presenting Multimedia 10. Responding to the User 11. Connecting to Wearables 12. Adding In-App Billing 13. Publishing Apps Index

Implementing a ListView


Almost all apps have some sort of collection of data that will be presented to the user, with the easiest and most common way being some sort of list.

How to do it...

If we want to present a collection of items to the user, we can use a ListView instance:

  1. In order to show a list, we need to add a ListView element to our layout resource (we can do this in the code as well):

    <ListView
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      android:id="@+id/listView" />
  2. We then get hold of the ListView instance in our code so that we can use it:

    ListView listView = FindViewById<ListView>(
      Resource.Id.listView);
  3. Now that we have the view, we need the data (which we will generate here):

    IEnumerable<int> numbers = Enumerable.Range(1, 1000);
    IEnumerable<string> strings = numbers.Select(
      i => string.Format("Item Number {0} Here!", i));
    List<string> data = new List<string>(strings);
  4. We then create an IListAdapter instance...

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