先给懒癌晚期及其阅读恐惧症童鞋先贴下解决方法
继承于 UITableView 的class 不能定义 以下属性
//@property (nonatomic, assign) NSInteger index;
只能用
@property (nonatomic, copy) NSString *index;
或者
@property (nonatomic, assign) NSInteger currentIndex;
今天我们新版的App出现一个很诡异的bug
首页加载的时候会出现这个crash
堆栈很奇怪 定位到了main函数
而且全局断点无效
测试和开发一开始都没有找到重现路径
国内外的资料找了一天都没什么头绪
就是这时同事看到accessibility 这个单词联想到是否跟iOS系统自带的辅助功能有关
于是抖机灵的打开了 设置-通用-辅助功能-(旁白或者语音-双指下滑朗读选项)
然后在我们app首页启动辅助功能 就重现了这个crash路径和信息
就在我们以为找到了路径能解bug的时候又傻逼了
一个个界面屏蔽
排除了一个下午没排除到具体的问题
最后才定位在
一个自定义的UITableView 用
[self.view addSubView: [tableViewClass alloc] init]];
不进行任何初始化 然后调用辅助功能就会crash
于是乎用runtime把UITableView类所有成员变量打印出来
Runtime基本介绍
unsigned int iVarCount;
Ivar *iVarList = class_copyIvarList([UITableView class], &iVarCount);
for (int i = 0; i < iVarCount; i++) {
Ivar aVar = iVarList[i];
NSLog(@"%s",ivar_getName(aVar));
}
/*
.270772 _rowData
.270895 _rowHeight
.271007 _sectionHeaderHeight
.271166 _sectionFooterHeight
.271442 _estimatedRowHeight
.271567 _estimatedSectionHeaderHeight
.271703 _estimatedSectionFooterHeight
.271825 _visibleBounds
.271975 _subviewManager
.272076 _visibleRows
.272168 _visibleCells
.272341 _templateLayoutCells
.272469 _indexPathBeingCreated
.272635 _firstResponderIndexPath
.272918 _firstResponderView
.273159 _firstResponderViewType
.273518 _reusableTableCells
.303977 _nibMap
.304102 _nibExternalObjectsTables
.304203 _headerFooterNibMap
.304289 _headerFooterNibExternalObjectsTables
.304437 _topSeparator
.304540 _extraSeparators
.304635 _visibleHeaderViews
.304763 _visibleFooterViews
.304853 _reusableHeaderFooterViews
.304997 _highlightedIndexPaths
.305251 _selectedIndexPaths
.305517 _swipedIndexPath
.305757 _highlightedSpringLoadedIndexPath
.305988 _pendingSelectionIndexPath
.306243 _pendingDeselectionIndexPaths
.306465 _newContentView
.306702 _deleteAnimationSupport
.306981 _reorderingSupport
.307231 _backgroundView
.307460 _clearBlendingView
.307705 _wrapperView
.308015 _index
.308280 _tableHeaderBackgroundView
.308572 _tableHeaderView
.308833 _tableFooterView
.309010 _countLabel
.309535 _sectionIndexTitlesForTableView
.309802 _indexOverlayIndicatorView
.310196 _indexOverlayTimer
.310547 _indexOverlayIndicatorEventIgnoreTimer
.310699 _currentIndexTitleIndex
.310905 _indexOverlaySelectionView
.311554 _tableReloadingSuspendedCount
.311869 _sectionIndexMinimumDisplayRowCount
.312745 _updateAnimationCount
.313065 _lastFloatingSection
.314186 _insertItems
.314538 _deleteItems
.317482 _reloadItems
.318338 _moveItems
.319139 _separatorColor
.319308 _darkenedSeparatorColor
.319508 _separatorTopShadowColor
.319770 _separatorBottomShadowColor
.320000 _separatorEffect
.320275 _accessoryBaseColor
.320615 _checkmarkColor
.320829 _sectionBorderColor
.321132 _indexColor
.321425 _indexBackgroundColor
.321661 _indexTrackingBackgroundColor
.321918 _defaultSectionIndexTitles
.322157 _swipeActionController
.322353 _swipeDeletionShadowUpdateIdentifiers
.322632 _swipeGestureRecognizer
.322842 _swipeToDeleteGobblerGestureRecognizer
.323056 _swipeToDeleteCell
.323311 _updateCount
.323524 _shadowUpdateCount
.323808 _revertingShadowUpdateCount
.324104 _displayingCellContentStringIndexPath
.324302 _longPressGestureRecognizer
.324558 _upArrowLongPressGestureRecognizer
.324774 _downArrowLongPressGestureRecognizer
.325045 _upArrowTapGestureRecognizer
.325245 _downArrowTapGestureRecognizer
.325458 _longPressAutoscrollTimer
.325727 _longPressAutoscrollDirection
.326061 _sectionContentInset
.326450 _sectionBorderWidth
.326691 _sectionCornerRadius
.326956 _currentTouch
.327230 _cellClassDict
.327446 _headerFooterClassDict
.327733 _topPadding
.328026 _bottomPadding
.328300 _separatorInset
.328505 _updateCompletionHandler
.328712 _deferredEditingHandler
.328974 _hiddenSeparatorIndexPaths
.329129 _tentativeCells
.329887 _tentativeHeaderViews
.330336 _tentativeFooterViews
.330775 _clientGesturesRequiringTableGesturesToFail
.331072 _currentUpdate
.331813 _shadowUpdatesController
.332116 _preReloadVisibleRowRange
.332506 _preReloadFirstCellOffset
.332798 _lastWindow
.333015 _focusedViewType
.333177 _contentFocusContainerGuide
.333452 _constants
.333647 _targetIndexPathForScrolling
.333843 _targetOffsetToIndexPathForScrolling
.334062 _indexRetargetFeedbackGenerator
.334306 _sectionChangeFeedbackGenerator
.334557 _reorderFeedbackGenerator
.334768 _performUsingPresentationValuesCount
.334927 _prefetchDataSource
.335167 _prefetchContext
.335368 _coalescedContentSizeDelta
.335531 _tableFlags
.335816 _dragDelegate
.336066 _dropDelegate
.336295 _focusedCellIndexPath
.336487 _focusedCell
.336725 _indexPathToFocus
.336980 _dragController
.337142 _dropController
.337628 _placeholderContexts
.337862 _dragSourceDelegate
.338106 _dragDestinationDelegate
.338290 _cachedSectionIndexBarInsets
*/
发现系统UITableView其中有一个私有属性Index是String类型的 所以由于各种原因(苹果的bug) 会导致app崩溃 而且没有任何信息
找了很多资料找不到解决办法
因此和大家分享一下我们的解决方法
如果帮助到大家可以点个赞
鼓励up主继续创作
么么哒 (* ￣3)(ε￣ *)
