尝试将新项目添加到设置包中的“首选项”数组时，Xcode 4崩溃

问题描述

| 我为iOS应用程序创建了一个设置捆绑包，并尝试编辑Root.plist文件。 我可以更改一些现有值（默认情况下创建的值），但是如果我尝试添加新项（无论类型如何），Xcode 4都会崩溃，并显示以下错误： 有人知道这可能是什么造成的吗？ 我正在使用Xcode 4.02内部版本4A2002a。  这是日志：

ASSERTION FAILURE in /SourceCache/DVTKit/DVTKit-221/Framework/Classes/PlistView/DVTPlistDictionaryNode.m:171
Details:  method -[DVTPlistDictionaryNode value] is inappropriate for instances of DVTPlistDictionaryNode
Object:   <DVTPlistDictionaryNode: 0x202442340>
Method:   -value
Thread:   <NSThread: 0x200020700>{name = (null),num = 1}
Hints:   None
Backtrace:
  0  0x0000000100949773 -[IDEAssertionHandler handleFailureInMethod:object:fileName:lineNumber:messageformat:arguments:] (in IDEKit)
  1  0x000000010006d394 _DVTAssertionFailureHandler (in DVTFoundation)
  2  0x00000001002ed3cb -[DVTPlistDictionaryNode value] (in DVTKit)
  3  0x00000001002f0443 -[DVTPlistModel replacePlist:withPlist:] (in DVTKit)
  4  0x00000001003030d4 -[DVTPlistViewController outlineView:setobjectValue:forTableColumn:byItem:] (in DVTKit)
  5  0x00007fff8830e149 -[NSOutlineView _dataSourceSetValue:forColumn:row:] (in AppKit)
  6  0x00007fff883c4dd9 -[NSTableView performClickOnCellAtColumn:row:] (in AppKit)
  7  0x00007fff883c1200 -[NSTableView _attemptToPerformClickOnFocusedColumn] (in AppKit)
  8  0x00007fff86bd511c __NSFireDelayedPerform (in Foundation)
  9  0x00007fff867f5be8 __CFRunLoopRun (in CoreFoundation)
 10  0x00007fff867f3dbf CFRunLoopRunSpecific (in CoreFoundation)
 11  0x00007fff88f577ee runcurrentEventLoopInMode (in HIToolBox)
 12  0x00007fff88f575f3 ReceiveNextEventCommon (in HIToolBox)
 13  0x00007fff88f574ac BlockUntilNextEventMatchingListInMode (in HIToolBox)
 14  0x00007fff87ec4e64 _DPSNextEvent (in AppKit)
 15  0x00007fff87ec47a9 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] (in AppKit)
 16  0x00007fff87e8a48b -[NSApplication run] (in AppKit)
 17  0x00007fff87e831a8 NSApplicationMain (in AppKit)
 18  0x0000000100000eec
 19  0x0000000000000002

这是Xcode本身创建的root.plist的内容：

<?xml version=\"1.0\" encoding=\"UTF-8\"?>
<!DOCTYPE plist PUBLIC \"-//Apple//DTD PLIST 1.0//EN\" \"http://www.apple.com/DTDs/PropertyList-1.0.dtd\">
<plist version=\"1.0\">
<dict>
    <key>PreferenceSpecifiers</key>
    <array>
        <dict>
            <key>Title</key>
            <string>Group</string>
            <key>Type</key>
            <string>PSGroupSpecifier</string>
        </dict>
        <dict>
            <key>AutocapitalizationType</key>
            <string>None</string>
            <key>AutocorrectionType</key>
            <string>No</string>
            <key>DefaultValue</key>
            <string></string>
            <key>IsSecure</key>
            <false/>
            <key>Key</key>
            <string>name_preference</string>
            <key>KeyboardType</key>
            <string>Alphabet</string>
            <key>Title</key>
            <string>Name</string>
            <key>Type</key>
            <string>PSTextFieldSpecifier</string>
        </dict>
        <dict>
            <key>DefaultValue</key>
            <true/>
            <key>Key</key>
            <string>enabled_preference</string>
            <key>Title</key>
            <string>Enabled</string>
            <key>Type</key>
            <string>PSToggleSwitchSpecifier</string>
        </dict>
        <dict>
            <key>DefaultValue</key>
            <real>0.5</real>
            <key>Key</key>
            <string>slider_preference</string>
            <key>MaximumValue</key>
            <integer>1</integer>
            <key>MaximumValueImage</key>
            <string></string>
            <key>MinimumValue</key>
            <integer>0</integer>
            <key>MinimumValueImage</key>
            <string></string>
            <key>Type</key>
            <string>PSSliderSpecifier</string>
        </dict>
    </array>
    <key>StringsTable</key>
    <string>Root</string>
</dict>
</plist>

    

解决方法

        听起来像是苹果的虫子。如果您告诉Xcode继续而不是崩溃，那么您可能可以继续工作，好像没有任何问题。如果所有其他方法均失败，则可以考虑使用PlistBuddy或使用默认值来操纵您的plist。 （属性列表Editor.app是理想的选择，但我认为Xcode 4安装中不包含它。）