The Picker control is different from the Date Picker in that it doesn't have any data at all by default. In this movie, see how to create a picker control, how to add it to your user interface, and how to add data to it using code with Xcode 7 and the iOS SDK to add more features to your iOS applications.
- [Voiceover] Let's look at a picker view.…So I'm going to search for a picker in the object library…and drop picker view onto the screen.…I'll hide the utility area and the document library…to get a little bit more space.…Then I'll just drag this to the center of the screen.…Then I'll use the keyboard shortcut…Option + Shift + Cmd = to add the constraints.…Now the picker view works…a little bit different than you might expect.…You might expect that in the utilities area,…you could go to the attributes inspector…and set the items inside of the picker view.…
However, that is not the case.…You actually have to set the data…that's going to be inside of the picker view with code.…So there is no option here.…Right now there is actually no data…inside of the picker view.…What we see is just place holder data.…So if you test the app,…you're not going to see anything in the simulator.…That doesn't mean the picker view's broken.…That's just saying that there is no data…set in your code for the picker view.…So we have this blank screen right here.…
Interested in developing for Apple Watch or Apple TV? Get a sneak peek in Chapter 9. The course wraps up with a look at the submission process for the App Store.
- Installing Xcode and the iOS SDK
- Creating a simple iOS app
- Creating a basic interaction with a button
- Choosing an object as a first responder
- Creating a user interface with Interface Builder and Auto Layout
- Working with sliders and progress bars
- Creating views to show images and web pages
- Developing responsive layouts with size classes
- Understanding the iOS architecture
- Loading data in table views
- Transitioning between views
- Developing for the iPad, Apple Watch, and Apple TV
- Submitting apps to the App Store
Skill Level Beginner
1. Prepare to Develop an iOS App
2. Core Skills
3. Basic iOS UI
4. More UI Objects
5. Size Classes
6. iOS Application Architecture
7. Table Views
8. Multiple-View Applications
9. iPad, Watch, and Apple TV Development
10. Finish and Submit to the App Store
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