iOS Programming Camera  2  1.1 Creating BNRImageStore The image store will fetch and cache the images as they are needed. It will also be able to flush the cache if the device runs low on memory.   Create a new NSObject subclass called BNRImageStore.…

 iOS Programming Camera  1 1 Displaying Images and UIImageView 1.1  put an instance of UIImageView on the screen. Then drag an instance of UIImageView onto the view and position it below the label. A UIImageView displays an image according to its con…

iOS Programming Autorotation, Popover Controllers, and Modal View Controllers  自动旋转,Popover 控制器,Modal view controller  1.  In this chapter, you are going to make four changes to Homepwner's behavior that will tailor the app's behavior to whatever dev…

iOS Programming State Restoration 状态存储 If iOS ever needs more memory and your application is in the background, Apple might kill it to return memory to the system. 如果iOS 需要更多的memory,你的应用在后台,apple 可能杀死它来得到更多的内存给系统. This should be transparent to your u…

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iOS Programming Recipe 6: Creating a custom UIView using a Nib JANUARY 7, 2013 BY MIKETT 12 COMMENTS Creating a custom UIView using a Nib Assumptions You are familiar with creating UIView subclasses, and instantiating UIView’s both from a Nib file or…

iOS Programming Controlling Animations 动画 The word "animation" is derived from a Latin word that means "the act of bringing to life." Animations are what bring your applications to life, and when used appropriately, they can guide your…

iOS Programming UIStoryboard In this chapter, you will use a storyboard instead. Storyboards are a feature of iOS that allows you to instantiate and lay out all of your view controllers in one XIB-like file. Additionally, you can wire up view control…

iOS Programming NSUserDefaults  When you start an app for the first time, it uses its factory settings. As you use it, a good app learns your preferences. Where are your preferences stored? Inside each app bundle there is a plist that holds the user'…

iOS Programming Localization 本地化 Internationalization is making sure your native cultural information is not hard-coded into your application. 国际化确保你的本土信息不是硬编码进你的应用. By cultural information, we mean language, currency, date formats, number formats, a…