我目前正在更新我的应用程序以支持 4 英寸 iPhone 5 屏幕。在那次尝试中，我被困在打开 UIActionSheet 的地方，它工作正常并显示 iPhone 5 4 英寸屏幕上的所有按钮，但在 3.5 英寸设备上，最后一个按钮被切断。这表明 UIActionSheet 无法识别较小的屏幕。
这就是我在我的代码中所做的。任何想法？
UIActionSheet *popupQuery;
// Code to initialize UIActionSheet
popupQuery.actionSheetStyle = UIActionSheetStyleBlackTranslucent;
[popupQuery showInView:[UIApplication sharedApplication].keyWindow];
[popupQuery release];
Check that the option 'Full Screen at Launch' is checked on the Window in you MainWindow.xib.
I had a similar problem and others when updating for iPhone 5 screen. Apparently the 'Simulated metrics' of Window will be the actual metrics when launching (provided you have not checked 'Full Screen at Launch').
Apple actually has a Note about it in the UIWindow Class Reference:
... If you choose to create a window in Interface Builder, be sure to select the Full Screen at Launch option in the Attributes inspector so that the window is sized appropriately for the current device. ...