如何在雪豹上安装iPhone2.0 SDK？
雪豹xcode仅安装3.1、3.0和2.2.1。我需要安装 2.0 来用作特定应用程序的基础 SDK。
我在安装映像的 Packages 目录中看到 iPhoneSDK2_0.pkg，但没有安装它的选项...
The snow leopard xcode only installs 3.1, 3.0, and 2.2.1. I need to install 2.0 to use as the base SDK for a particular app.
I see the iPhoneSDK2_0.pkg in the Packages directory of the install image, but there is no option to install it...
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不幸的是，2.2.1 似乎是 Snow Leopard 支持的最早的 SDK。 这个问题的答案和这个问题描述了如何使用2.2.1，但没有适用于 Snow Leopard 的早期 SDK。我还相信 Snow Leopard 上的 iPhone 模拟器不允许您针对 iPhone OS 2.x 进行测试，而只能针对 3.x 进行测试。
老实说，目前没有什么理由坚持使用 2.x。为了满足少数仍坚持 2.x 的人的需求，不值得使用旧版 SDK 来妨碍自己。如果您正在开发付费应用程序，我怀疑那些不愿意为旧款 iPod touch 支付 5 美元升级费的人是否会有兴趣购买您的应用程序。
Unfortunately, it looks like 2.2.1 is the earliest SDK supported on Snow Leopard. The answers to this question and this question describe how to use 2.2.1, but no earlier SDKs are available for Snow Leopard. I also believe that the iPhone Simulator on Snow Leopard does not let you test against iPhone OS 2.x, only 3.x.
To be honest, there is very little reason to stick with 2.x at this point. Satisfying the needs of the few remaing 2.x holdouts isn't worth handicapping yourself by using the older SDK. If you're developing a for-pay application, I doubt that people unwilling to pay the $5 upgrade fee for the older iPod touches will be interested in buying your application.
您不需要 SDK 2.0 来编译/构建 iPhone OS 2.0 兼容的应用程序。
模拟器的“硬件”菜单允许选择操作系统版本进行测试。
You don't need SDK 2.0 to compile/build iPhone OS 2.0 - compatible apps.
Simulator's "Hardware" menu allow to choose OS version for tests.
实际上，如果您有发货产品（已经购买了您的产品的人），那么继续支持 iPhone OS 2.x 是有充分理由的。如果您需要 OS 3.x 来进行所有未来的更新，您将阻止客户进行更新，这意味着他们将继续向您发送电子邮件或对您已修复的问题给予差评。
正是出于这个原因，我现在坚持使用 Leopard。
Actually, there is a very good reason to continue to support iPhone OS 2.x if you have a shipping product - people who have already bought your product. If you require OS 3.x for all future updates, you will shut customers out of updates, which means they will continue to email you or give you bad reviews about issues you've already fixed.
For this very reason, I'm sticking with Leopard for now.