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我的应用程序使用我自己的子类，NSTextStorage并且在 Mavericks 之前一切正常。即使使用最精简的版本，只要我用它初始化一个文本视图，我就会得到一个异常。我阅读了文档并查看了如何扩展 NSTextStorage？. 希望你们中的一个人知道苹果是否改变了某些东西，或者我做错了什么。

您可能需要帮助我的信息：

例外：

TextViewCheck[12542:303]：异常 *** NSRunStorage (0x6000000a4200)，_replaceElements()：替换范围 {0, 929} 超出当前运行存储大小 928。在排版布局管理器 NSLayoutManager 期间引发 NSLayoutManager：0x100106a80
1 个容器，文本支持有 928字符选择字符范围 {0, 0} 亲和力：上游粒度：字符标记字符范围 {0, 0} 目前持有 928 个字形。
字形树内容：928 个字符，928 个字形，1 个节点，64 个节点字节，960 个存储字节，1024 个总字节，每个字符 1.10 个字节，每个字形 1.10 个字节 布局树内容：928 个字符，928 个字形，0 个铺层字形，0 个铺层行片段，1 个节点，64 个节点字节，0 个存储字节，64 个总字节，每个字符 0.07 个字节，每个字形 0.07 个字节，每个铺设线片段 0.00 个铺设字形，每个铺设线片段 0.00 个字节，字形范围 {0 928}。无视...

回溯

thread #1: tid = 0x137013, 0x00007fff8ad7e44e AppKit`_NSGlyphTreeGetGlyphsInRange + 1179, queue = 'com.apple.main-thread, stop reason = EXC_BAD_ACCESS (code=1, address=0x1002c0000)

frame #0: 0x00007fff8ad7e44e AppKit`_NSGlyphTreeGetGlyphsInRange + 1179
frame #1: 0x00007fff8ad7dfa1 AppKit`-[NSLayoutManager getGlyphsInRange:glyphs:characterIndexes:glyphInscriptions:elasticBits:bidiLevels:] + 92
frame #2: 0x00007fff8ad4d8b6 AppKit`-[NSATSGlyphStorage setGlyphRange:characterRange:] + 3724
frame #3: 0x00007fff8ad4c8be AppKit`-[NSATSTypesetter _ctTypesetter] + 306
frame #4: 0x00007fff8ad4baf9 AppKit`-[NSATSLineFragment layoutForStartingGlyphAtIndex:characterIndex:minPosition:maxPosition:lineFragmentRect:] + 85
frame #5: 0x00007fff8ad4a64e AppKit`-[NSATSTypesetter _layoutLineFragmentStartingWithGlyphAtIndex:characterIndex:atPoint:renderingContext:] + 2777
frame #6: 0x00007fff8ad7dc79 AppKit`-[NSATSTypesetter layoutParagraphAtPoint:] + 149
frame #7: 0x00007fff8b3f5b45 AppKit`-[NSTypesetter _layoutGlyphsInLayoutManager:startingAtGlyphIndex:maxNumberOfLineFragments:maxCharacterIndex:nextGlyphIndex:nextCharacterIndex:] + 4043
frame #8: 0x00007fff8ad7cc9d AppKit`-[NSTypesetter layoutCharactersInRange:forLayoutManager:maximumNumberOfLineFragments:] + 202
frame #9: 0x00007fff8ad7cb81 AppKit`-[NSATSTypesetter layoutCharactersInRange:forLayoutManager:maximumNumberOfLineFragments:] + 1107
frame #10: 0x00007fff8ad7b219 AppKit`-[NSLayoutManager(NSPrivate) _fillLayoutHoleForCharacterRange:desiredNumberOfLines:isSoft:] + 1306
frame #11: 0x00007fff8ae24ad9 AppKit`_NSFastFillAllLayoutHolesForGlyphRange + 1435
frame #12: 0x00007fff8ae6ddbd AppKit`-[NSLayoutManager(NSPrivate) _firstPassGlyphRangeForBoundingRect:inTextContainer:okToFillHoles:] + 309
frame #13: 0x00007fff8ae6cea4 AppKit`-[NSLayoutManager(NSPrivate) _glyphRangeForBoundingRect:inTextContainer:fast:okToFillHoles:] + 875
frame #14: 0x00007fff8add81b2 AppKit`-[NSTextView setNeedsDisplayInRect:avoidAdditionalLayout:] + 1466
frame #15: 0x00007fff8acb4222 AppKit`-[NSView setNeedsDisplay:] + 81
frame #16: 0x00007fff8add68d9 AppKit`-[NSTextView setTextContainer:] + 699
frame #17: 0x00007fff8add651a AppKit`-[NSTextContainer setTextView:] + 263
...

编码：

TTTSimpleTextStorage.m

@implementation TTTSimpleTextStorage

- (id)initWithAttributedString:(NSAttributedString *)attrStr {
    if (self = [super init]) {
        contents = attrStr ? [attrStr mutableCopy] :
        [[NSMutableAttributedString alloc] init];
    }
    return self;
}


- init {
    return [self initWithAttributedString:nil];
}

- (NSString *)string {
    return [contents string];
}

- (NSDictionary *)attributesAtIndex:(NSUInteger)location
                 effectiveRange:(NSRange *)range {
    return [contents attributesAtIndex:location effectiveRange:range];
}

- (void)replaceCharactersInRange:(NSRange)range withString:(NSString
                                                        *)str {
    NSInteger origLen = [self length];
    [contents replaceCharactersInRange:range withString:str];
    [self edited:NSTextStorageEditedCharacters range:range
          changeInLength:[self length] - origLen];
}

- (void)setAttributes:(NSDictionary *)attrs range:(NSRange)range {
    [contents setAttributes:attrs range:range];
    [self edited:NSTextStorageEditedCharacters range:range
       changeInLength:0];
}

@end

我如何使用它

这是在 MainWindowController - awakeFromNib 中，窗口 IBOutlet 有一个 NSView 作为名为container的子视图和一个随机字符串string1

nts1 = [[TTTSimpleTextStorage alloc] initWithString:string1];

NSLayoutManager* lm1 = [[NSLayoutManager alloc] init];
[nts1 addLayoutManager:lm1];

NSTextContainer* tc1 = [[NSTextContainer alloc] initWithContainerSize:NSMakeSize(400, 280)];
[lm1 addTextContainer:tc1];


tv1 = [[NSTextView alloc] initWithFrame:NSMakeRect(40, 20, 400, 280) textContainer:tc1];  // here it crashes

[self.container addSubview:tv1];
[self.window makeKeyAndOrderFront:nil];
[self.window makeFirstResponder:tv1];
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1 回答 1

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在 replaceCharactersInRange 中，您将 origLen 设置为 [self length]，然后在一行之后，您通过 [self length] 减去 origLen 来计算 changeInLength，这实际上是：

NSInteger origLen = self.length;
// ...
changeInLength: origLen - self.length

我想你宁愿想要：

changeInLength: self.length - str.length];
于 2013-12-12T13:05:14.523 回答