适用于 iPhone 和 iPod touch 的编程工具
我听说编程工具可以免费下载。
我还听说编程工具不能免费下载。
是哪一个？
I heard that the programmings tools can be downloaded for free.
I also heard that the programmings tools cannot be downloaded for free.
Which is it?
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XCode 和 Interface Builder 是免费的、可选的安装，包含在 OS X 中。iPhone SDK 可以从 http:// 免费下载Developer.apple.com。
唯一不免费的部分是，如果您想通过 App Store 部署应用程序，或者将其部署到您自己的硬件上进行测试，则必须成为 Apple Developer Program 的付费会员。但如果您只想使用 iPhone 模拟器进行编码和测试，那么一切都是免费的。
XCode and Interface Builder are free, optional installs that are included with OS X. The iPhone SDK is a free download from http://developer.apple.com.
The only not-free part is that you have to be a paid member of the Apple Developer Program if you want to deploy an app via the App Store, or to deploy it to your own hardware to test. But if you just want to code and test using the iPhone simulator, it's all free.
您可以从 developer.apple.com 免费下载它们。顺便说一句，不难发现这一点。
they can be downloaded for free at developer.apple.com. Not too hard to find that out, btw.
如果满足以下条件，您可以从 http://developer.apple.com/mac/ 下载 Xcode/Interface Builder你不想挖出你的安装盘。您可以从 http://developer.apple.com/iphone/ 下载 iPhone SDK。下载它们后，您可以免费使用它们（并在 iPhone 模拟器中免费运行您的应用程序）。如果您想将应用程序提交到 App Store 或在任何实际设备上进行测试，您需要花费 100 美元注册成为 Apple 开发者。
You can download Xcode/Interface Builder from http://developer.apple.com/mac/ if you don't feel like digging out your install disk. You can download the iPhone SDK from http://developer.apple.com/iphone/. After you download them, you can use them for free (and run your applications in the iPhone Simulator for free). You will need to sign up to be an Apple Developer for $100 USD if you want to submit your applications to the App Store or test them on any actual device.