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我刚刚更新到 iPhone SDK4。我面临的问题是 - 我正在 iPhone sdk 3.0 中编写一个应用程序，只需在 xcode 3.2.3 中打开该项目，对 xib 文件进行了一些更改，现在当我在模拟器中运行这个项目时，用户界面（xib）显示为空白（使用黑色）。

知道为什么会这样吗...？

谢谢索拉布

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You may be trying to run directly from IB (with cmd+R) this makes it only load the view you're currently editing and does something similar to what you're describing. Save, switch to xcode and run from there, see if that helps. :)

于 2011-02-13T01:11:48.240 回答