我可以在Settings.bundle中隐藏/禁用字段吗？

I have several Text Field items in the Root.plist of my Settings.bundle. I need all of them for my app, but I want one of them to be either hidden or un-editable by the user. E.g. When the user goes on his iPhone to Settings-->MyApp, I want one of the fields to not be visible there, or disabled for editing. Is this possible?I have several Text Field items in the Root.pli