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Chapter 15 Introduction to Auto Layout1. You do not define a view’s alignment rectangle directly. You do not have enough information (screen size!)to ... 阅读全文
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Chapter 13 UIGestureRecognizer and UIMenuController1. A UIGestureRecognizer intercepts touches that are on their way to being handled by a view. When ... 阅读全文
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In House 的ipa 通过企业网下载安装出现如下错误：无法下载应用程序 此时无法安装“YourApp”.出现这种提示的原因Google了下发现有很多原因。几乎挨个试了一遍，均失败。绝望中通过Organizer连上设备查看console， 发现了 “Could not extract archi... 阅读全文
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Chapter 12 Touch Events and UIResponder1.As a subclass of UIResponder, a UIView can override four methods to handle the distinct touch events: a finge... 阅读全文
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Chapter 10 UIImagePickerController1. Setting the image picker’s sourceType: The sourceType constant that tells the image picker where to get images. I... 阅读全文
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Chapter 10 UINavigationController1. When your application presents multiple screens of information, a UINavigationController maintains a stack of thos... 阅读全文
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Chapter 9 Editing UITableView1. XIB files are typically used to create the view for a view controller, but they can also be used any time you want to ... 阅读全文
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Chapter 8 UITableView and UITableViewController1. The designated initializer of UITableViewController is initWithStyle:, which takes a constant that d... 阅读全文