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Android Design Patterns and Best Practice

You're reading from   Android Design Patterns and Best Practice Create reliable, robust, and efficient Android apps with industry-standard design patterns

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Product type Paperback
Published in Dec 2016
Publisher Packt
ISBN-13 9781786467218
Length 370 pages
Edition 1st Edition
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Author (1):
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Kyle Mew Kyle Mew
Author Profile Icon Kyle Mew
Kyle Mew
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Table of Contents (14) Chapters Close

Preface 1. Design Patterns FREE CHAPTER 2. Creational Patterns 3. Material Patterns 4. Layout Patterns 5. Structural Patterns 6. Activating Patterns 7. Combining Patterns 8. Composing Patterns 9. Observing Patterns 10. Behavioral Patterns 11. Wearable Patterns 12. Social Patterns 13. Distribution Patterns

Using the factory with the RecyclerView


As we saw briefly earlier in the book, RecyclerViews make use of an internal LayoutManager. This in turn communicates with the data set by use of an adapter. These adapters serve exactly the same function as the adapter design pattern we explored earlier in the book. The function may not appear so readily apparent, but it acts as a connection between a dataset and a recycler view's layout manager. The adapter crosses this bridge with its ViewHolder. The workings of the adapter are neatly separated from the client code, and all we need are a few lines to create a new adapter and layout manager.

With this in mind and our data ready, we can quickly put an adapter together by following these simple steps:

  1. Begin by creating this new class in your main package:

    public class DataAdapter extends RecyclerView.Adapter<DataAdapter.ViewHolder> { 
    
  2. It requires the following field and constructor:

    private List<Cheese> cheeses; 
     
    public DataAdapter...
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