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Xamarin Blueprints

You're reading from   Xamarin Blueprints Leverage the power of Xamarin to create stunning cross-platform and native apps

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Product type Paperback
Published in Sep 2016
Publisher Packt
ISBN-13 9781785887444
Length 516 pages
Edition 1st Edition
Languages
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Author (1):
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Michael Williams Michael Williams
Author Profile Icon Michael Williams
Michael Williams
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Table of Contents (9) Chapters Close

Preface 1. Building a Gallery Application FREE CHAPTER 2. Building a SpeechTalk Application 3. Building a GPS Locator Application 4. Building an Audio Player Application 5. Building a Stocklist Application 6. Building a Chat Application 7. Building a File Storage Application 8. Building a Camera Application

Triggers

The first page will consist of two buttons, an image, a label, and extra additional UI functionality known as triggers. Triggers are declarative objects used in XAML, which contain actions executed when certain conditions or events occur. The main advantage of triggers is we can box up these handle actions for as many UI elements that need to perform the same actions. We have the option of the following four different types of triggers:

  • Property trigger: This is executed when a property on a control is set to a particular value.
  • Data trigger: This is same as the property trigger but uses data binding.
  • Event trigger: This is occurs when an event occurs on the control.
  • Multi trigger: This is allows multiple trigger conditions to be set before an action occurs.

In our solution, we are going to add two event triggers for button click events.

Let's start with adding a new folder called Triggers into the Camera project, add a new file called ButtonClickTrigger.cs, and implement the following...

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