NSImage泄漏？

Question

所以我试图在我的应用程序中复制SourceView示例。我可以完美地生成源列表，很好。我也可以扩展容器，一切都很好显示。但是，当我在列表中选择一个项目时，应用程序会崩溃并伴随EXC_BAD_ACCESS。

回溯

#0 0x7fff86532340 in objc_msgSend_vtable14 
#1 0x7fff8508f622 in -[NSImage _deallocAuxiliaryStorage] 
#2 0x7fff8508f5a1 in -[NSImage dealloc] 
*#3 0x100002913 in -[SourceListCell setImage:] at SourceListCell.m:23 
*#4 0x100001c31 in -[ProjectController outlineView:willDisplayCell:forTableColumn:item:] at ProjectController.m:166 
#5 0x7fff85103085 in -[NSTableView preparedCellAtColumn:row:] 
#6 0x7fff8511bc3f in -[NSTableView _drawContentsAtRow:column:withCellFrame:] 
#7 0x7fff8511bbb5 in -[NSOutlineView _drawContentsAtRow:column:withCellFrame:] 
#8 0x7fff8511acd8 in -[NSTableView drawRow:clipRect:] 
#9 0x7fff8511a5cb in -[NSTableView drawRowIndexes:clipRect:] 
#10 0x7fff8511a44c in -[NSOutlineView drawRowIndexes:clipRect:] 

SourceListCell

@interface SourceListCell : NSTextFieldCell { 
    NSImage *image; 
} 

@property(nonatomic, retain) NSImage *image; 

@end 

- (id)init { 
    self = [super init]; 

    [self setFont:[NSFont systemFontOfSize:[NSFont smallSystemFontSize]]]; 

    return self; 
} 

- (void)dealloc { 
    [image release]; 
    image = nil; 
    [super dealloc]; 
} 

- (void)drawWithFrame:(NSRect)cellFrame inView:(NSView *)controlView { 
    if (image != nil) { 
     [image setSize:NSMakeSize(kIconImageSize, kIconImageSize)]; 
     // the cell has an image: draw the normal item cell 
     NSSize imageSize; 
     NSRect imageFrame; 

     imageSize = [image size]; 
     NSDivideRect(cellFrame, &imageFrame, &cellFrame, 3 + imageSize.width, NSMinXEdge); 

     imageFrame.origin.x += kImageOriginXOffset; 
     imageFrame.origin.y -= kImageOriginYOffset; 
     imageFrame.size = imageSize; 

     if ([controlView isFlipped]) 
      imageFrame.origin.y += ceil((cellFrame.size.height + imageFrame.size.height)/2); 
     else 
      imageFrame.origin.y += ceil((cellFrame.size.height - imageFrame.size.height)/2); 
     [image compositeToPoint:imageFrame.origin operation:NSCompositeSourceOver]; 

     NSRect newFrame = cellFrame; 
     newFrame.origin.x += kTextOriginXOffset; 
     newFrame.origin.y += kTextOriginYOffset; 
     newFrame.size.height -= kTextHeightAdjust; 
     [super drawWithFrame:newFrame inView:controlView]; 
    } 
} 

大纲视图委托

- (void)outlineView:(NSOutlineView *)outlineView willDisplayCell:(NSCell*)cell forTableColumn:(NSTableColumn*)tableColumn item:(id)item { 
    if ([[tableColumn identifier] isEqualToString:COLUMNID_NAME]) { 
      if ([cell isKindOfClass:[SourceListCell class]]) { 
       //item = [item representedObject]; 
       NSImage *iconImage; 
       iconImage = [[NSWorkspace sharedWorkspace] iconForFile:[item path]]; 
       [item setNodeIcon:iconImage]; 

       [(SourceListCell*)cell setImage:[item nodeIcon]]; 

      } 
    } 

} 

Answer 1

的问题是在我的自定义NSTextFieldCell：我需要实现copyWithZone。