Tableviews, Protocols (DataSource, Delegate)

Objectives

Every view can be done with a table view or collection view. Everytime you look at a view, learn to ask yourself if you should be doing it with a one of these two (UITableView or UICollectionView).

An introduction to concepts of a view with a data-source and protocols.

• You will be able to identify, describe, and implement the protocol design pattern
• You will be able to identify and describe the importance of Table Views
• You will be able to use the UITableViewDataSource protocol functions to provide data to an instance of UITableView
• You will be able to describe and use the UITableViewDelegate function didSelectRowAtIndexPath to respond to user interaction

Required Preclass Resources

• Apple Protocol Documentation
• UIKit Catalog - Table Views
• UITableView Class Reference

Lesson Video

Video Challenges

• Protocols

  Work with a partner to identify the required functions of the UICollectionViewDataSource protocol. Work with a partner to identify the required functions of the UITableViewDelegate protocol. Discuss your findings with the class.

• TableView Faces

  With a neighbor, try to find a single non-game application on your phone that doesn't have a UITableView somewhere in the interface.

• Other Favorites

  Have the students rename their FoodController to FavoritesController and update the Array of strings to all types of favorites.

Stretch Problem

Find Numbers Divisible by X

Make a method that prints every X number between 0 and Y.

♦ Black Diamond

Make a method that prints every prime number between 0 and Y.

Hint

Solution

Guided Project

TableView

A lesson teaching how to set up a basic tableView. Shows how to use both dataSource and delegate methods.

Project

• Solar System

  Students will work with table views, learn about protocols, and implement the UITableViewDataSource and UITableViewDelegate protocols to build a Solar System directory.

  ReadMe

Mastery Review