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Building the view controller

From: iOS SDK and SQLite: Building Data-Driven Apps

Video: Building the view controller

The first step in building our Testbed is to create the view controller in interface builder. So let's create a project in Xcode and get started. Let's start up Xcode here and under the File menu I'm going to select New > Project. Under iOS and Application I'm going to select Single View Application and press Next. The Name of our project will be Testbed, and I leave the Organization Name alone. Company Identifier, example.com, you'll notice that's in reverse domain notation, and you'll just use your own domain name, or you'll make something up for it.

Building the view controller

The first step in building our Testbed is to create the view controller in interface builder. So let's create a project in Xcode and get started. Let's start up Xcode here and under the File menu I'm going to select New > Project. Under iOS and Application I'm going to select Single View Application and press Next. The Name of our project will be Testbed, and I leave the Organization Name alone. Company Identifier, example.com, you'll notice that's in reverse domain notation, and you'll just use your own domain name, or you'll make something up for it.

Our Class Prefix is Testbed, that's used for building the Class Names and Devices just the iPhone, and we're going to Use Storyboards, Use ARC, and we do not need Unit Tests for this, so I press Next. This is in our exercise files Chap01 and Create, and there is our Testbed application. So before we can create the view controller and interface builder we need to create an outlet in the code.

So I'm just going to go into the code here, and I'm going to close that on the right so we can see the code. I'm in the .m File because we're going to create the outlet as part of the private interface, that's because we don't need it exposed to the public, there is no property, and it's not in the header file, it's just going to be right here in the .m file. Under interface I am going to put in some brackets and create the outlet right here. IBOutlet UITextView, because this is going to be a text view, ViewController and an asterisk to make it a pointer because objects in Objective-C are Pointers, and I'm going to call it TextView like that and a semicolon and pressing Command+S on my Mac keyboard to save this, and we're done.

You notice it creates this little circle over here that we're going to use as an outlet, and we'll get to that in a moment. Now I'm going to up here to the Storyboard, and you'll notice--I'm just going to minimize this controller thing over to the left there because we have limited real estate here on this display for the purpose of the recording--you'll notice down here at the bottom it says Testbed View Controller. I'm going to bring the inspector back on the right and show the attributes Inspector. You notice there's nothing there yet because I haven't selected anything yet.

Under my objects here, so you want to make sure that your Objects tab is selected, under Objects I'm going to select Data Views, that's what we want. We want the TextView, which is right here, I'm going to grab a TextView, and I'm going to drag it on to my View Controller and just get it all lined up just right there. And now under my Inspector you'll notice that it's got text in it, so I'm just going to select all of that and delete it. I'm going to press Enter on my keyboard, and you see all that text goes away in the View.

I am going to uncheck Editable because we don't need this to be actually Editable. Now I'm going to bring up my Assistant editor, and you'll notice that it brings up the TestbedViewController.h. We actually want the .m file so I'm going to select the .m File here because there is outlet, and I just drag that over to the View Controller, and we're done. So the View Controller now, if I select my View Controller and go over here to the Inspector, you'll see that my TextView is in the Referencing Outlets, and that's exactly what we want.

So now we've created the View Controller and all that's left is to plug in the code to make it work. So I'll save this, and we'll plug in the code in the next movie.

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This video is part of

Image for iOS SDK and SQLite: Building Data-Driven Apps
iOS SDK and SQLite: Building Data-Driven Apps

41 video lessons · 6408 viewers

Bill Weinman
Author

 
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  1. 8m 29s
    1. Welcome
      57s
    2. Exercise files
      2m 17s
    3. Course overview
      3m 4s
    4. Application overview
      2m 11s
  2. 14m 49s
    1. Prototyping in a testbed
      1m 27s
    2. Building the view controller
      3m 45s
    3. Coding the testbed
      7m 56s
    4. Using the testbed
      1m 41s
  3. 37m 49s
    1. Understanding SQLite in iOS
      1m 41s
    2. Creating an Objective-C interface for SQLite
      9m 57s
    3. Testing the BWDB interface in the sandbox
      7m 1s
    4. Designing a database schema
      8m 7s
    5. Supporting the application with a specific interface
      7m 7s
    6. Using C pointers with automatic reference counting (ARC)
      3m 56s
  4. 21m 18s
    1. Understanding the table view
      1m 33s
    2. Creating the view controller
      6m 39s
    3. Reading from the database
      13m 6s
  5. 33m 50s
    1. Understanding the parsing process
      1m 57s
    2. Creating the item view controller
      12m 25s
    3. Reading data from the internet
      5m 30s
    4. Parsing the feed with NSXMLParser
      8m 2s
    5. Updating the item view with the feed items
      5m 56s
  6. 40m 14s
    1. Understanding the modal view
      1m 47s
    2. Constructing the view controller
      15m 5s
    3. Finding a feed link in a web page
      8m 55s
    4. Parsing the feed with NSXMLParser
      5m 4s
    5. Delegating back to the parent view
      6m 11s
    6. Deleting feeds
      3m 12s
  7. 21m 5s
    1. Creating the web view class
      12m 33s
    2. Coding the web view
      5m 25s
    3. Viewing pages in Safari
      3m 7s
  8. 14m 3s
    1. Understanding the iOS preferences system
      1m 23s
    2. Creating the preferences plist in Xcode
      7m 20s
    3. Reading preferences in your application
      5m 20s
  9. 6m 15s
    1. Adding pull-to-refresh functionality
      2m 34s
    2. Implementing the pull-to-refresh gesture for iOS 6
      3m 41s
  10. 27m 1s
    1. Understanding split view
      1m 4s
    2. Coding the table views
      11m 24s
    3. Implementing the iPad detail view
      6m 35s
    4. Implementing the iPad modal view
      7m 58s
  11. 35s
    1. Goodbye
      35s

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