Book Image

Android Design Patterns and Best Practice

By : Kyle Mew
Book Image

Android Design Patterns and Best Practice

By: Kyle Mew

Overview of this book

Are you an Android developer with some experience under your belt? Are you wondering how the experts create efficient and good-looking apps? Then your wait will end with this book! We will teach you about different Android development patterns that will enable you to write clean code and make your app stand out from the crowd. The book starts by introducing the Android development environment and exploring the support libraries. You will gradually explore the different design and layout patterns and get to know the best practices of how to use them together. Then you’ll then develop an application that will help you grasp activities, services, and broadcasts and their roles in Android development. Moving on, you will add user-detecting classes and APIs such as gesture detection, touch screen listeners, and sensors to your app. You will also learn to adapt your app to run on tablets and other devices and platforms, including Android Wear, auto, and TV. Finally, you will see how to connect your app to social media and explore deployment patterns as well as the best publishing and monetizing practices. The book will start by introducing the Android development environment and exploring the support libraries. You will gradually explore the different Design and layout patterns and learn the best practices on how to use them together. You will then develop an application that will help you grasp Activities, Services and Broadcasts and their roles in Android development. Moving on, you will add user detecting classes and APIs such as at gesture detection, touch screen listeners and sensors to our app. You will also learn to adapt your app to run on tablets and other devices and platforms, including Android Wear, Auto, and TV. Finally, you will learn to connect your app to social media and explore deployment patterns and best publishing and monetizing practices.
Table of Contents (20 chapters)
Android Design Patterns and Best Practice
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

Applying a data factory pattern


In this section, we will apply a factory pattern to create objects of type cheese. This will in turn implement a filling interface. Each object will consist of several properties such as price and calorific value. Some of these values will be presented in our list items and others will be available only through an expanded view or accessible only via code.

One of the few disadvantages of design patterns is the large number of classes that soon accumulate. For this reason, before beginning the following exercise, create a new package inside the java directory, called fillings.

Follow these steps to generate our cheese factory:

  1. Create a new interface called Filling in the fillings package and complete it like so:

     
    public interface Filling { 
     
        String getName(); 
        int getImage(); 
        int getKcal(); 
        boolean isVeg(); 
        int getPrice(); 
    } 
    
  2. Next, create an abstract class that implements Filling, called Cheese...