确保您输入了全部 6 个值：http://developer.apple.com/iphone /library/documentation/PreferenceSettings/Conceptual/SettingsApplicationSchemaReference/Articles/PSMultiValueSpecifier.html
对于每个值条目，它应该有一个与其相对应的标题条目。
Make sure you have all 6 Values entered for it:http://developer.apple.com/iphone/library/documentation/PreferenceSettings/Conceptual/SettingsApplicationSchemaReference/Articles/PSMultiValueSpecifier.html
For each Values entry, it should have a Titles Entry corresponding to it.
如果 PSMultiValueSpecifier 位于顶部/根级别，则以下内容有效：
NSString *urlFromSettings = [[NSUserDefaults standardUserDefaults] stringForKey:@"feed"];
我正在弄清楚为什么它在子窗格中使用时不起作用。
The following works, if the PSMultiValueSpecifier is on the top / root level:
I'm on my way to figure out, why it does not work, when used in a child pane.
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确保您输入了全部 6 个值：
http://developer.apple.com/iphone /library/documentation/PreferenceSettings/Conceptual/SettingsApplicationSchemaReference/Articles/PSMultiValueSpecifier.html
对于每个值条目，它应该有一个与其相对应的标题条目。
Make sure you have all 6 Values entered for it:
http://developer.apple.com/iphone/library/documentation/PreferenceSettings/Conceptual/SettingsApplicationSchemaReference/Articles/PSMultiValueSpecifier.html
For each Values entry, it should have a Titles Entry corresponding to it.
如果 PSMultiValueSpecifier 位于顶部/根级别，则以下内容有效：
我正在弄清楚为什么它在子窗格中使用时不起作用。
The following works, if the PSMultiValueSpecifier is on the top / root level:
I'm on my way to figure out, why it does not work, when used in a child pane.