cocoa-touch - 尝试将新项目添加到设置包中的 "Preference items"数组时，Xcode 4 崩溃

Question

我为我的 iOS 应用程序创建了一个设置包，并尝试编辑 Root.plist 文件。

我可以更改一些现有值(默认创建的值)，但是如果我尝试添加新项目(无论类型如何)，Xcode 4 会崩溃并显示以下错误:



有谁知道这可能是什么原因造成的？

我正在使用 Xcode 4.02 build 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自己创建的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>

Answer 1

听起来像苹果的bug。如果您告诉 Xcode 继续而不是崩溃，您可能能够继续工作，就好像没有出错一样。如果所有其他方法都失败了，您可以考虑使用 PlistBuddy 或默认值来操作您的 plist。 (属性列表 Editor.app 将是理想的，但我不认为它包含在 Xcode 4 安装中。)