By Wei-Meng Lee
The excellent start line for iPhone and iPad app improvement with iOS 5
If you must improve apps for Apple's iPhone and iPad, first you must know the way to exploit the tools--iPhone's new iOS five working approach and SDK, and the hot xCode toolset that include it. This full-color e-book is the precise place to begin. starting builders, you'll get a superior advent to the hot xCode four and Objective-C and locate every little thing you want to quick construct your first app. The booklet completely covers the entire new iOS five positive factors, together with new multitasking, location-based prone, notification process, cloud-based beneficial properties, and lots more and plenty more.* Written by way of bestselling Wrox writer, Wei-Meng Lee, this can be a terrific publication for starting builders* is helping keen builders speedy begin construction apps for the iPhone, iPad, and iPod contact* Introduces iOS five, xCode four, Objective-C, and the fundamentals you must create your first Apple gadget app* Covers a number of latest iOS five features, together with new multitasking, new location-based companies, and a brand new notification process* exhibits you ways to paintings with iOS 5's cloud-based positive factors for on-line garage of tune, photographs, and video
Full-color and entire of data, Beginning iOS five program Development is the last word consultant for starting Apple developers.
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Extra resources for Beginning iOS 5 Application Development
All the captured images are shown in the middle of the Organizer window. Select the image that you want to use and click the Save As Launch Image . . button. 5. You will be prompted to select the project that you want to use for the launch image (see Figure 2-23). You will also be asked to name the image. If you are capturing an image from a Retina display device (such as the iPhone 4 or iPhone 4S), name it Default@2x. If not, name it Default. 6. The file will be copied to the HelloWorld Xcode project (see Figure 2-24).
The older iPhones (iPhone 3G/3GS) and the iPod touch have lower resolutions compared to the iPhone 4/4S. They have a resolution of 480 × 320 pixels, one quarter of the resolution of the iPhone 4. When programming for the iPhones, it is important to note the difference between points and pixels. For example, the following statement specifies a frame that starts from the point (20,10) with a width of 280 points and a height of 50 points: CGRect frame = CGRectMake(20, 10, 280, 50); On the older iPhones, a point corresponds to a pixel.
Most of the time, you don’t need to launch the iOS Simulator directly — running (or debugging) your application in Xcode automatically brings up the iOS Simulator. Xcode installs the application on the iOS Simulator automatically. indd 4 05/12/11 1:38 PM Components of Xcode ❘ 5 FIGURE 1-5 THE IOS SIMULATOR IS NOT AN EMULATOR To understand the difference between a simulator and an emulator, keep in mind that a simulator tries to mimic the behavior of a real device. In the case of the iOS Simulator, it simulates the real behavior of an actual iPhone/iPad device.
Beginning iOS 5 Application Development by Wei-Meng Lee