The iOS 5 Developer’s Cookbook: Core Concepts and Essential Recipes for iOS Programmers, Third Edition (Gal Zentner's Library) by Erica Sadun

Author:Erica Sadun
Language: eng
Format: epub
Publisher: Addison-Wesley
Published: 2012-06-14T16:00:00+00:00

Adding iPad Support

On the iPhone, you create a picker controller and present it modally. On the iPad, you embed a popover controller with your image picker. Because of this difference, you need to check for the runtime device when building universal applications. The following test produces a true value when run on an iPhone, false on an iPad:

#define IS_IPHONE \

(UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone)

Use this test both when creating your picker and whenever you receive a media-picking delegate callback. On the iPhone, you will want to dismiss and release your modal controller during that callback. On the iPad, you need to wait until the popover is dismissed before allowing the picker to be released. Recipe 7-1 demonstrates how to create and present the proper picker interface depending on the device in use.

- (void)popoverControllerDidDismissPopover:

(UIPopoverController *)aPopoverController

{

popoverController = nil;

imagePickerController = nil;

}

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