title	RecyclerView
type	Lab
duration	1:30
creator	name city Alan Caceres NYC

Fun? With RecyclerViews

Introduction

Note: This can be a pair programming activity or done independently.

In this lab you will be using your knowledge of RecyclerView to build an app.

Exercise

Requirements

Activities

• You need to create one Activity to hold your RecyclerView

RecyclerView

• Add the RecylerView to your XML
• Get a reference to the XML created RecyclerView inside the onCreate() method in Java in both activities.
• Set up the layout manager for the RecyclerView in both activities.

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Custom View Layout

• Create a custom XML layout that replicates the following.

Custom RecyclerView ViewHolder

• Create a custom RecyclerView ViewHolder.
• The ViewHolder should get a reference to the custom view layout you created in XML.

Custom Object

• Create a custom Java objects that hold this data:
• The object should hold a title, a description, a color, and a check to see if the item was selected.
• Make sure you create getters/setters and constructors that will help you with the requirements.

Custom RecyclerView Adapter

• Create a custom RecyclerView Adapter.
• The adapter should use the custom ViewHolder.

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OnClickListener

• Have the OnClickListener show a Toast that changes the checked value of both the object and view. Make sure it maintains that checked state when scrolling.

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MainActivity

• Create and populate a List that contains ten instances of your custom Java object.
• Provide the custom adapter this list to use.
• Set your custom adapter on the RecyclerView.

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Bonus: How would you change your classes to allow for more than one type of view in one RecyclerView adapter?

Deliverable

A pull request from forked GitHub repo that contains your implementation of the requirements.

Additional Resource:

Android: RecyclerView

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Licensing

1. All content is licensed under a CC­BY­NC­SA 4.0 license.
2. All software code is licensed under GNU GPLv3. For commercial use or alternative licensing, please contact legal@ga.co.