What are the tradeoffs between performSelector:withObject:afterDelay: and dispatch_after(performSelector:withObject:afterDelay: 和 dispatch_after 之间的权衡是什么)

iPhone/iPod Touch: application executable is missing a required architecture(iPhone/iPod Touch:应用程序可执行文件缺少所需的架构)

How many units of each iOS version are currently in usage?(每个 iOS 版本当前使用了多少个单元?)

Support legacy iPhone users(支持旧版 iPhone 用户)

How to parse JSON into Objective C - SBJSON(如何将 JSON 解析为 Objective C - SBJSON)

Bad URL when requesting with NSURL(使用 NSURL 请求时出现错误的 URL)

Making a call programmatically from iPhone app and returning back to the app after ending the call(从 iPhone 应用程序以编程方式拨打电话并在结束通话后返回应用程序)

How to send SMS from an iPhone app without opening the SMS interface?(如何在不打开短信界面的情况下从 iPhone 应用发送短信?)

symbol(s) not found for architecture armv6(未找到架构 armv6 的符号)

Offline iOS web app: loads my manifest, but doesn#39;t work offline(离线 iOS 网络应用程序:加载我的清单，但不能离线工作)

How can I generate UML diagrams from Xcode4(如何从 Xcode4 生成 UML 图)

How to create contacts in address book in iPhone SDK?(如何在 iPhone SDK 的通讯录中创建联系人?)

iOS 3.x support in Xcode 4(Xcode 4 中的 iOS 3.x 支持)

Saving UIView contents in iOS 4 with real size of the images inside (i.e. scale contentes up for save)(在 iOS 4 中将 UIView 内容保存为内部图像的实际大小(即放大内容以进行保存))

Center Align text in UITableViewCell problem(UITableViewCell中的文本居中对齐问题)

iOS download and save HTML file(iOS 下载并保存 HTML 文件)

How To Draw line on touch event?(如何在触摸事件上画线?)

How can you play music from the iPod app while still receiving remote control events in your app?(如何在您的应用程序中接收远程控制事件的同时从 iPod 应用程序播放音乐?)

UIToolbar tint on iOS 4(iOS 4 上的 UIToolbar 色调)

How can I make the iPhone 4 LED light fire instantly?(如何让 iPhone 4 LED 灯瞬间发光?)