By Danny Goodman
Why trouble with the SDK in case you can easily construct internet apps for Apple's iOS units? net apps cannot entry an iPhone's tune library, digital camera, or iOS method software program for maps, audio, and extra. Nor are you able to promote net apps within the App shop. on the way to take complete benefit of the iPhone and iPad, iOS four SDK is your instrument -- and this is often your e-book. contains complete assurance of iOS SDK 4.2.
- Learn the excellence among internet app and iOS local app programming
- Create a workbench app to check code snippets in the course of the studying process
- Get a structural view of an iOS app, and examine the method of creating items in Objective-C as opposed to JavaScipt
- Discover how your code launches iOS apps and makes them user-ready
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14 | Chapter 2: Welcome to the iOS SDK Interface Builder You are not required to design your user interfaces using this graphically oriented design tool, but if your app utilizes standard iPhone or iPad user interface elements, it can significantly reduce the amount of code you write. Instruments After your app reaches a usable form, you will use Instruments to observe how well it uses memory and system resources. iOS Simulator Although the iOS Simulator app is buried elsewhere within the Developer directory hierarchy, you will use it often during all development phases for both iPhone and iPad testing (the tool contains simulators for both platforms).
When you quit the app on the simulator (by clicking the Home button at the bottom center), you will see an icon for the app on the iPhone home screen. The icon is one of the image files that came with the collection of files for the project. Coming Up... At this stage of your exposure to Xcode, don’t bother trying to figure out the files and structure of the sample TheElements app—it has a lot of moving parts that probably won’t make much sense yet. By the time you reach Chapter 8, however, you’ll be ready for a more detailed walk-through of this project’s component files.
Knowing how to select the right template type comes with more experience than you have at this point, so take my word for it that a view-based application is the one you want for Workbench. Although other types would also work, it will ultimately be helpful for your experiments to have the view-based infrastructure in place. Select the View-based Application icon in the New Project window, and click Choose. Device-Specific or Universal App? When you select View-based Application in the New Project window, the Product menu allows you to produce the fundamental code for either an iPhone- or iPadspecific app.