我无法重现此崩溃，但是从生产版本中多次收到此类崩溃。在我的应用程序标签栏中，仅从故事板加载，标签栏始终隐藏。
它的主要原因是内存不足吗？任何猜测，如何解决或重现这类问题
Hardware Model: iPad2,4
OS Version: iPhone OS 7.0.4 (11B554a)
Report Version: 104
Exception Type: SIGABRT
Exception Codes: #0 at 0x393f71fc
Crashed Thread: 0
Application Specific Information:
*** Terminating app due to uncaught exception 'NSRangeException', reason: 'NSMutableRLEArray replaceObjectsInRange:withObject:length:: Out of bounds'
Last Exception Backtrace:
0 CoreFoundation 0x2e766f4b __exceptionPreprocess + 131
1 libobjc.A.dylib 0x38e386af objc_exception_throw + 38
2 CoreFoundation 0x2e766e8d +[NSException raise:format:] + 104
3 Foundation 0x2f089aff -[NSMutableRLEArray replaceObjectsInRange:withObject:length:] + 122
4 Foundation 0x2f088efb -[NSConcreteMutableAttributedString initWithString:attributes:] + 310
5 UIKit 0x30ee8ed7 -[NSAttributedString(UILabelAdditions) _ui_synthesizeAttributedSubstringFromRange:usingDefaultAttributes:] + 86
6 UIKit 0x30ee8c9f -[UILabel _synthesizedAttributedText] + 1010
7 UIKit 0x30ee8307 -[UILabel _textRectForBounds:limitedToNumberOfLines:includingShadow:] + 222
8 UIKit 0x30ee8213 -[UILabel textRectForBounds:limitedToNumberOfLines:] + 54
9 UIKit 0x30ee80fb -[UILabel _intrinsicSizeWithinSize:] + 162
10 UIKit 0x30ee8049 -[UILabel sizeThatFits:] + 32
11 UIKit 0x30ee7f37 -[UIView(Geometry) sizeToFit] + 126
12 UIKit 0x31002be1 -[UITabBarButton initWithImage:selectedImage:label:withInsets:] + 388
13 UIKit 0x31001a1f -[UITabBarItem(Static) _createViewForTabBar:showingBadge:withTint:idiom:] + 1170
14 UIKit 0x31001583 -[UITabBarItem(Static) _createViewForTabBar:showingBadge:idiom:] + 38
15 UIKit 0x30ffd859 -[UITabBarItem(Static) _updateViewForIdiom:positionItems:] + 160
16 UIKit 0x31004c43 -[UITabBar(Static) _configureItems:] + 406
17 UIKit 0x310042db -[UITabBar(Static) _positionTabBarButtons:ignoringItem:] + 1234
18 UIKit 0x3100133f -[UITabBar setItems:animated:] + 1358
19 UIKit 0x31000d29 -[UITabBarController _rebuildTabBarItemsAnimated:] + 800
20 UIKit 0x310051f9 -[UITabBarController _setSelectedViewController:] + 76
21 UIKit 0x30eeb6e5 +[UIView(Animation) performWithoutAnimation:] + 72
22 UIKit 0x31008bf7 -[UITabBarController _selectDefaultViewControllerIfNecessaryWithAppearanceTransitions:] + 218
23 UIKit 0x31008077 -[UITabBarController viewWillAppear:] + 134
24 UIKit 0x30ef40eb -[UIViewController _setViewAppearState:isAnimating:] + 346
25 CoreFoundation 0x2e6aff65 __53-[__NSArrayI enumerateObjectsWithOptions:usingBlock:]_block_invoke + 52
26 CoreFoundation 0x2e6a994d -[__NSArrayI enumerateObjectsWithOptions:usingBlock:] + 220
27 UIKit 0x30ef4265 -[UIViewController _setViewAppearState:isAnimating:] + 724
28 UIKit 0x3106a4bf -[UINavigationController _startCustomTransition:] + 846
29 UIKit 0x30f88273 -[UINavigationController _startDeferredTransitionIfNeeded:] + 418
30 UIKit 0x30f8807d -[UINavigationController __viewWillLayoutSubviews] + 44
31 UIKit 0x30f88015 -[UILayoutContainerView layoutSubviews] + 184
32 UIKit 0x30ed9da3 -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 346
33 QuartzCore 0x30b60c6b -[CALayer layoutSublayers] + 142
34 QuartzCore 0x30b5c47b CA::Layer::layout_if_needed(CA::Transaction*) + 350
35 QuartzCore 0x30b5c30d CA::Layer::layout_and_display_if_needed(CA::Transaction*) + 16
36 QuartzCore 0x30b5bd1f CA::Context::commit_transaction(CA::Transaction*) + 230
37 QuartzCore 0x30b5bb2f CA::Transaction::commit() + 314
38 QuartzCore 0x30b5585d CA::Transaction::observer_callback(__CFRunLoopObserver*, unsigned long, void*) + 56
39 CoreFoundation 0x2e7321cd __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 20
40 CoreFoundation 0x2e72fb71 __CFRunLoopDoObservers + 284
41 CoreFoundation 0x2e72feb3 __CFRunLoopRun + 730
42 CoreFoundation 0x2e69ac27 CFRunLoopRunSpecific + 522
43 CoreFoundation 0x2e69aa0b CFRunLoopRunInMode + 106
44 GraphicsServices 0x3336e283 GSEventRunModal + 138
45 UIKit 0x30f3e049 UIApplicationMain + 1136
46 MyApp main (in MyApp) (main.m:16)
47 libdyld.dylib 0x39340ab7 start + 2
Thread 0 Crashed:
0 libsystem_kernel.dylib 0x393f71fc __pthread_kill + 8
1 libsystem_c.dylib 0x393a7ffd abort + 77
2 MyApp uncaught_exception_handler (in MyApp) + 27
3 CoreFoundation 0x2e76724f __handleUncaughtException + 579
4 libobjc.A.dylib 0x38e3890f _objc_terminate() + 175
5 libc++abi.dylib 0x386ed1c7 std::__terminate(void (*)()) + 79
6 libc++abi.dylib 0x386ecd2d __cxa_increment_exception_refcount + 1
7 libobjc.A.dylib 0x38e387f7 objc_exception_rethrow + 43
8 CoreFoundation 0x2e69ac9d CFRunLoopRunSpecific + 641
9 CoreFoundation 0x2e69aa0b CFRunLoopRunInMode + 106
10 GraphicsServices 0x3336e283 GSEventRunModal + 138
11 UIKit 0x30f3e049 UIApplicationMain + 1136
12 MyApp main (in MyApp) (main.m:16)
答案 0 :(得分：0)
从崩溃日志，第5行
5 UIKit 0x30ee8ed7 -[NSAttributedString(UILabelAdditions) _ui_synthesizeAttributedSubstringFromRange:usingDefaultAttributes:] + 86
似乎是基于
生成属性字符串 - (NSAttributedString *)attributedSubstringFromRange:(NSRange)aRange
可能在该代码上设置一个断点，并检查你的字符串长度是否大于或等于该范围。