滚动 UITableview 时发生崩溃
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【中文标题】滚动 UITableview 时发生崩溃【英文标题】：Crash happening while Scrolling the UITableview 【发布时间】：2017-08-11 11:09:01 【问题描述】：当我使用泰卢固语脚本滚动 tableview 时，我的应用程序在 main.m @autoreleasepool 中获得 EXC_BAD_ACCESS，并且仅在 ios 9 中而不是在 iOS 10 中，我也尝试在 iOS 8 中使用模拟器，但它也没有，并且当我使用英语/泰米尔语脚本时，它不会崩溃。
另外，我在控制台中没有收到任何崩溃日志，我尝试使用 NSZombieEnbled 获取日志，是的，然后在仪器中哪个僵尸对象导致崩溃，我没有得到任何线索，例如导致崩溃的代码块/代码行，所以我在下面发布我的 uitableview 和 uitableviewcell 代码
在 CustomTableView.m 中
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
return 1;
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
return synopsisArray.count;
-(CGFloat)tableView:(UITableView*)tableView heightForRowAtIndexPath:(NSIndexPath*)indexPath
return UITableViewAutomaticDimension;
- (CGFloat)tableView:(UITableView *)tableView estimatedHeightForRowAtIndexPath:(NSIndexPath *)indexPath
return UITableViewAutomaticDimension;
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
static NSString *cellIdentifier = @"HomeViewCardCell";
HomeViewCardCell *cell = (HomeViewCardCell *)[tableview dequeueReusableCellWithIdentifier:cellIdentifier];
if (cell == nil)
cell = [[HomeViewCardCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIdentifier];
font = [[NSUserDefaults standardUserDefaults] valueForKey:@"fontsize"];
[cell setdata:[synopsisArray objectAtIndex:indexPath.row]];
cell.selectionStyle = UITableViewCellSelectionStyleNone;
cell.delegate = self;
return cell;
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
[tableView deselectRowAtIndexPath:indexPath animated:NO];
[moveToTopBtn removeFromSuperview];
NSString *tabedtag = [[NSUserDefaults standardUserDefaults] objectForKey:@"tabedtagNub"];
if ([tabedtag isEqualToString:@"0"])
int btnNum = (int)indexPath.row+1;
NSIndexPath *myIndexPath = [NSIndexPath indexPathForRow:btnNum inSection:0];
if (synopsisArray.count > btnNum)
[self.tableview scrollToRowAtIndexPath:myIndexPath atScrollPosition:UITableViewScrollPositionTop animated:YES];
if ([tabedtag isEqualToString:@"1"])
scrolposindex = @"0";
[[NSUserDefaults standardUserDefaults] setObject:scrolposindex forKey:@"scrolposindex"];
NSString *catname = [[synopsisArray objectAtIndex:indexPath.row] valueForKey:@"categoryName"];
[[NSUserDefaults standardUserDefaults] setObject:@"YES" forKey:@"categoryButtonPressed"];
[_delegate pushCategoryScreen:catname categoryID:[[synopsisArray objectAtIndex:indexPath.row] valueForKey:@"categoryID"] entryID:nil];
if ([tabedtag isEqualToString:@"2"])
[moveToTopBtn removeFromSuperview];
[[NSUserDefaults standardUserDefaults]setInteger:indexPath.row forKey:@"cattapeindex"];
SynopsisTable *synoptable=[synopsisArray objectAtIndex:indexPath.row];
[_delegate pushReadWebviewScreen:synoptable.externalURL navbarTitle:synoptable.Source];
if ([tabedtag isEqualToString:@"3"])
AppDelegate *appdelegate =(AppDelegate *)[UIApplication sharedApplication].delegate;
[appdelegate startActivity];
NSArray *itemsToShare;
SynopsisTable *synoptable=[synopsisArray objectAtIndex:indexPath.row];
itemsToShare = @[[NSURL URLWithString:synoptable.shareUrl]];
[_delegate presentShareContentView:itemsToShare];
[[NSUserDefaults standardUserDefaults] setObject:nil forKey:@"tabedtagNub"];
-(void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath
cell.backgroundColor = [UIColor clearColor];
indexNumber = indexPath.row;
if ([cell respondsToSelector:@selector(setLayoutMargins:)])
[cell setLayoutMargins:UIEdgeInsetsZero];
- (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView
lastContentOffset = scrollView.contentOffset;
- (void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate
if (lastContentOffset.y < scrollView.contentOffset.y)
[moveToTopBtn removeFromSuperview];
[_delegate newArticlemsghideshow:YES];
[UIView animateWithDuration:0.5 delay:0.0 options:UIViewAnimationOptionCurveEaseIn animations:^moveToTopBtn.alpha = 0.0; completion:nil];
else if (lastContentOffset.y > scrollView.contentOffset.y)
[UIView animateWithDuration:0.5 delay:0.1 options:UIViewAnimationOptionCurveEaseIn animations:^moveToTopBtn.alpha = 1.0; completion:nil];
[self toptomovebutncreate];
[_delegate newArticlemsghideshow:NO];
- (void)scrollViewWillEndDragging:(UIScrollView *)scrollView withVelocity:(CGPoint)velocity targetContentOffset:(inout CGPoint *)offset
if (offset->y+scrollView.frame.size.height > scrollView.contentSize.height - 1)
NSLog(@"tableview load more happened");
[[NSUserDefaults standardUserDefaults] setObject:@"NO" forKey:@"ReloadCategoryVC"];
[[NSUserDefaults standardUserDefaults] setObject:@"NO" forKey:@"RequestFromTimer"];
[[NSUserDefaults standardUserDefaults] setObject:@"no" forKey:@"tabedmenu"];
SynopsisTable *synoptable = [synopsisArray lastObject];
[_delegate tableViewLodeMore:synoptable.entryID];
在 HomeViewCardCell.h 中
@interface HomeViewCardCell : UITableViewCell <UIWebViewDelegate>
NSString *BGColor;
NSString *TextColor;
SDImageCache *imageCache;
UIWebView *videoWebView;
IBOutlet UILabel *splittext;
@property (nonatomic,retain) IBOutlet UIButton *nextcartbtn;
@property (nonatomic,retain) IBOutlet UIButton *catnamebtn;
@property (nonatomic,retain) IBOutlet UIButton *readmorebtn;
@property (nonatomic,retain) IBOutlet UIButton *sharebtn;
@property (nonatomic,retain) IBOutlet UILabel *titlelab;
@property (nonatomic,retain) IBOutlet UIImageView *logoimg;
@property (nonatomic,retain) IBOutlet UILabel *datelab;
@property (nonatomic,retain) IBOutlet UIView *boarderview;
@property (nonatomic,retain) IBOutlet UIView *placeholderview;
@property (nonatomic,strong) IBOutlet UIImageView * imageview;
@property (nonatomic,retain) IBOutlet UIButton *downloadButton;
@property (nonatomic,strong) NSString *catnameNo;
@property (nonatomic,assign) id delegate;
@property (nonatomic,retain) NSArray *entryidarray;
@property (nonatomic,retain) NSString *textcolor;
-(void)updateFonts;
-(id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier;
-(void)setdata:(NSDictionary *)syntable;
-(IBAction)loadImageView:(NSString *)entryId;
@end
在 HomeCardViewCell.m 中
@implementation HomeViewCardCell
NSString *imgStr;
NSNumber *fontNo;
@synthesize imageview,downloadButton,nextcartbtn,catnamebtn,readmorebtn,sharebtn,titlelab,logoimg,datelab,boarderview,placeholderview,imageView,catnameNo;
-(id) initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier
self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
if (self)
self.selectionStyle = UITableViewCellSelectionStyleNone;
return self;
- (void)setSelected:(BOOL)selected animated:(BOOL)animated
[super setSelected:selected animated:animated];
// Configure the view for the selected state
-(void)setdata:(NSDictionary *)syntable
CGFloat width = [UIScreen mainScreen].bounds.size.width;
[videoWebView removeFromSuperview];
downloadButton.hidden = YES;
BGColor = [SaveGetValue getValue:@"BGColor"];
TextColor = [SaveGetValue getValue:@"TxtColor"];
fontNo = [[NSUserDefaults standardUserDefaults] valueForKey:@"fontsize"];
imgStr = [syntable valueForKey:@"entryImgURL"];
NSString *datetime = [syntable valueForKey:@"entryPublishTime"];
NSString *categoryName = [syntable valueForKey:@"categoryName"];
if (![[syntable valueForKey:@"embedCode"] isEqualToString:@""])
imageview.image = nil ;
NSString *baseUrl = [NSString stringWithFormat:@"http://www.youtube.com/watch?v=%@",[syntable valueForKey:@"embedCode"]];
NSURL *url = [NSURL URLWithString:baseUrl];
NSURLRequest *request = [NSURLRequest requestWithURL:url];
videoWebView = [[UIWebView alloc] initWithFrame:imageview.frame];
[videoWebView loadRequest:request];
[videoWebView setNeedsLayout];
videoWebView.delegate=self;
[videoWebView setAllowsInlineMediaPlayback:YES];
videoWebView.mediaPlaybackRequiresUserAction = YES;
videoWebView.scrollView.scrollEnabled = NO;
videoWebView.scrollView.bounces = NO;
[self.contentView addSubview:videoWebView];
else
videoWebView = nil;
imgStr = [imgStr stringByReplacingOccurrencesOfString:@"300x80" withString:@"748x80"];
imageCache = [[SDImageCache alloc] initWithNamespace:@"ImageCacheFolder"];
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^
[imageCache queryCacheOperationForKey:[syntable valueForKey:@"entryID"] done:^(UIImage *image, NSData *data, SDImageCacheType cacheType)
if (image)
downloadButton.hidden = YES;
[imageview setImage:image];
else
NSString *currentNetwork = [[NSUserDefaults standardUserDefaults] objectForKey:@"CurrentNetwork"];
NSArray *downloadNetworks = [[NSUserDefaults standardUserDefaults] objectForKey:@"DownloadNetworks"];
if (([[downloadNetworks objectAtIndex:0] isEqualToString:@"SwitchUp"] && [currentNetwork isEqualToString:@"Wifi"]) || ([[downloadNetworks objectAtIndex:1] isEqualToString:@"SwitchUp"] && [currentNetwork isEqualToString:@"4G"]) || ([[downloadNetworks objectAtIndex:2] isEqualToString:@"SwitchUp"] && [currentNetwork isEqualToString:@"3G"]) || ([[downloadNetworks objectAtIndex:3] isEqualToString:@"SwitchUp"] && [currentNetwork isEqualToString:@"2G"]))
[self loadImageView:[syntable valueForKey:@"entryID"]];
else
downloadButton.hidden = NO;
downloadButton.frame = CGRectMake(width/2.25, width/4.2, downloadButton.frame.size.width, downloadButton.frame.size.height);
downloadButton.tag = [[syntable valueForKey:@"entryID"] integerValue] ;
[downloadButton setImage:[UIImage imageNamed:[NSString stringWithFormat:@"download_icon"]] forState:UIControlStateNormal];
[downloadButton addTarget:self action:@selector(handleTapFrom:) forControlEvents:UIControlEventTouchUpInside];
[imageview sd_setImageWithURL:nil placeholderImage:[UIImage imageNamed:[NSString stringWithFormat:@"PlaceholderImage-Day"]] options:SDWebImageRefreshCached];
[imageview addSubview:downloadButton];
];
);
// Title Label
titlelab.text = [syntable valueForKey:@"entryTitle"];
titlelab.textColor = [UIColor getUIColorFromHex:[SaveGetValue getValue:@"TxtColor"] alpha:1.0];
titlelab.font = [UIFont systemFontOfSize:fontNo.floatValue+2];
// Content Label
NSString *exDesc = [[syntable valueForKey:@"extraDesc"] stringByReplacingOccurrencesOfString:@"<li style='line-height:30px;'>" withString:@""];
NSArray *splitArray = [exDesc componentsSeparatedByString:@"</li>"];
splitArray = [splitArray filteredArrayUsingPredicate:
[NSPredicate predicateWithFormat:@"length > 0"]];
NSString *appendedStr = @"";
for (int i = 0; i < splitArray.count; i++)
NSString *str = [splitArray objectAtIndex:i];
str = [str stringByReplacingOccurrencesOfString:@"<li>" withString:@""];
NSString *bulletPoint = @" •";
NSString *formattedString = [NSString stringWithFormat:@"%@ %@ \n",bulletPoint,str];
appendedStr = [appendedStr stringByAppendingString:formattedString];
splittext.font = [UIFont fontWithName:@"Roboto-Regular" size:fontNo.floatValue];
splittext.textColor = [UIColor getUIColorFromHex:[SaveGetValue getValue:@"TxtColor"] alpha:1.0];
splittext.text = appendedStr;
// Category Button Enable/Disable
NSInteger catagoryindex = [[[NSUserDefaults standardUserDefaults] objectForKey:@"catagoryIndex"] integerValue];
if (catagoryindex == 0 || catagoryindex == 1)
if ([catnameNo isEqualToString:@"catnameNo"])
categoryName = [NSString stringWithFormat:@" %@",datetime];
datelab.text = categoryName;
else
categoryName = [NSString stringWithFormat:@" %@ ",categoryName];
datelab.text = [NSString stringWithFormat:@" - %@",datetime];
[catnamebtn setTitle:[categoryName capitalizedString] forState:UIControlStateNormal];
else
datelab.text=[NSString stringWithFormat:@" %@",datetime];
NSString *nextcardIcon;
NSString *ShareIcon;
NSString *boarderline;
NSString *logoimage;
NSString *bgcolor;
if ([BGColor isEqualToString:@"#404040"])
ShareIcon = [NSString stringWithFormat:@"ShareIcon-Night"];
nextcardIcon = [NSString stringWithFormat:@"NextCardIcon-Nigt"];
logoimage = [NSString stringWithFormat:@"60Sec-nightmode"];
bgcolor = [NSString stringWithFormat:@"#2b2b2b"];
//2b2b2b 3b3b3b
boarderline = [NSString stringWithFormat:@"#2e2e2e"];
else
nextcardIcon = [NSString stringWithFormat:@"NextCardIcon-Day"];
ShareIcon = [NSString stringWithFormat:@"ShareIcon-Day"];
logoimage = [NSString stringWithFormat:@"60Sec-icon-daymode"];
bgcolor = [NSString stringWithFormat:@"#dedede"];
boarderline = [NSString stringWithFormat:@"#cfcfcf"];
[readmorebtn setTitleColor:[UIColor getUIColorFromHex:TextColor alpha:1.0] forState:UIControlStateNormal];
logoimg.image = [UIImage imageNamed:logoimage];
[sharebtn setImage:[UIImage imageNamed:ShareIcon] forState:UIControlStateNormal];
[nextcartbtn setImage:[UIImage imageNamed:nextcardIcon] forState:UIControlStateNormal];
placeholderview.backgroundColor = [UIColor getUIColorFromHex:BGColor alpha:1.0];
placeholderview.layer.borderWidth = 1.0f;
placeholderview.layer.borderColor = [UIColor getUIColorFromHex:boarderline alpha:1.0].CGColor;
boarderview.backgroundColor = [UIColor getUIColorFromHex:boarderline alpha:1.0];
self.contentView.backgroundColor = [UIColor getUIColorFromHex:bgcolor alpha:1.0];
-(IBAction)loadImageView:(NSString *)entryId
[downloadButton setImage:nil forState:UIControlStateNormal];
dispatch_async(dispatch_get_main_queue(), ^
[imageview sd_setImageWithURL:[NSURL URLWithString:imgStr] placeholderImage:[UIImage imageNamed:[NSString stringWithFormat:@"PlaceholderImage-Day"]] completed:^(UIImage *setImage, NSError *err, SDImageCacheType cachetype, NSURL *url)
if (setImage)
[imageCache storeImage:setImage forKey:entryId toDisk:YES completion:nil];
];
);
- (void)handleTapFrom:(UIButton *)sender
if ([Network Check])
NSLog(@"image downloading");
UIButton *img = (UIButton *) sender;
[img removeFromSuperview];
dispatch_async(dispatch_get_main_queue(), ^
[imageview sd_setImageWithURL:[NSURL URLWithString:imgStr] placeholderImage:[UIImage imageNamed:[NSString stringWithFormat:@"PlaceholderImage-Day"]] completed:^(UIImage *setImage, NSError *err, SDImageCacheType cachetype, NSURL *url)
if (setImage)
[imageCache storeImage:setImage forKey:[NSString stringWithFormat:@"%ld",(long)[sender tag]] toDisk:YES completion:nil];
NSLog(@"image downloaded");
];
);
else
[Network showMessage:[[NSUserDefaults standardUserDefaults] objectForKey:@"nnwDwnldImg"]];
- (IBAction)clicked:(id)sender
NSString *str = [NSString stringWithFormat:@"%ld",(long)[sender tag]];
NSLog(@"tagno=%@",str);
[[NSUserDefaults standardUserDefaults] setObject:str forKey:@"tabedtagNub"];
if(_delegate)
UITableView *parent = (UITableView *)self.superview.superview;
//UITableView *parent = (UITableView *)[self superview];
NSIndexPath *indexPath = [parent indexPathForCell:self];
[_delegate tableView:parent didSelectRowAtIndexPath:indexPath];
- (void)layoutSubviews
[super layoutSubviews];
// Make sure the contentView does a layout pass here so that its subviews have their frames set, which we
// need to use to set the preferredMaxLayoutWidth below.
[self.contentView setNeedsLayout];
[self.contentView layoutIfNeeded];
// Set the preferredMaxLayoutWidth of the mutli-line bodyLabel based on the evaluated width of the label's frame,
// as this will allow the text to wrap correctly, and as a result allow the label to take on the correct height.
// self.titlelab.preferredMaxLayoutWidth = CGRectGetWidth(self.titlelab.frame);
// splittext.preferredMaxLayoutWidth = CGRectGetWidth(splittext.frame);
- (void)updateFonts
NSNumber *font = [[NSUserDefaults standardUserDefaults] valueForKey:@"fontsize"];
self.titlelab.font = [UIFont fontWithName:@"Roboto-Regular" size:font.integerValue+2];
splittext.font = [UIFont fontWithName:@"Roboto-Regular" size:font.integerValue];
@end
HomeCardViewCell Xib
对uitableview和uilabel的动态高度使用自动布局。
从 Crashlytics 获得崩溃报告，在此处添加堆栈跟踪
# OS Version: 9.3.5 (13G36)
# Device: iPod Touch 5G
# RAM Free: 13.8%
# Disk Free: 94.1%
#0. Crashed: com.apple.main-thread
0 CoreText 0x24f17664 TOpenTypeMorph::SetLookups(OTL::GSUB&, unsigned long const*, OTL::GlyphLookups&) + 131
1 CoreText 0x24f176f3 TOpenTypeMorph::SetLookups(OTL::GSUB&, unsigned long const*, OTL::GlyphLookups&) + 274
2 CoreText 0x24f185ad void TOpenTypeMorph::ApplyShapingEngine<TInlineVector<unsigned long, 30ul> >(OTL::GSUB&, OTL::GlyphLookups&, unsigned long*, CFRange, TInlineVector<unsigned long, 30ul>&, bool&, SyncState&) + 508
3 CoreText 0x24f17871 TOpenTypeMorph::ShapeGlyphs(SyncState&) + 300
4 CoreText 0x24edc077 TShapingEngine::ShapeGlyphs(TLine&, TCharStream const*) + 214
5 CoreText 0x24edd80d TTypesetter::FinishEncoding(std::__1::tuple<TLine const*, TCharStream const*, void const* (*)(__CTRun const*, __CFString const*, void*), void*, std::__1::shared_ptr<TBidiLevelsProvider>*, unsigned int, unsigned char> const&, TLine&, signed char) + 160
6 CoreText 0x24eae707 TTypesetterAttrString::Initialize(__CFAttributedString const*) + 406
7 CoreText 0x24eae4e3 TTypesetterAttrString::TTypesetterAttrString(__CFAttributedString const*) + 102
8 CoreText 0x24eae359 CTLineCreateWithAttributedString + 56
9 UIFoundation 0x271a2b57 __NSStringDrawingEngine + 12742
10 UIFoundation 0x2719f97d -[NSString(NSExtendedStringDrawing) boundingRectWithSize:options:attributes:context:] + 132
11 UIKit 0x2722dcab -[UILabel _textRectForBounds:limitedToNumberOfLines:includingShadow:] + 794
12 UIKit 0x2722d981 -[UILabel textRectForBounds:limitedToNumberOfLines:] + 56
13 UIKit 0x2722d8a7 -[UILabel _intrinsicSizeWithinSize:] + 134
14 UIKit 0x2732ab43 -[UILabel intrinsicContentSize] + 82
15 UIKit 0x2732a963 -[UIView(UIConstraintBasedLayout) _generateContentSizeConstraints] + 30
16 UIKit 0x2732a3f3 -[UIView(UIConstraintBasedLayout) _updateContentSizeConstraints] + 574
17 UIKit 0x273269c7 -[UIView(AdditionalLayoutSupport) updateConstraints] + 238
18 UIKit 0x2732a1ad -[UILabel updateConstraints] + 304
19 UIKit 0x27a659df -[UIView(AdditionalLayoutSupport) _internalUpdateConstraintsIfNeededAccumulatingViewsNeedingSecondPassAndViewsNeedingBaselineUpdate:forSecondPass:] + 462
20 UIKit 0x27a65c59 -[UIView(AdditionalLayoutSupport) _updateConstraintsIfNeededAccumulatingViewsNeedingSecondPassAndViewsNeedingBaselineUpdate:forSecondPass:] + 168
21 UIKit 0x27a658f5 -[UIView(AdditionalLayoutSupport) _internalUpdateConstraintsIfNeededAccumulatingViewsNeedingSecondPassAndViewsNeedingBaselineUpdate:forSecondPass:] + 228
22 Foundation 0x2343ddf9 -[NSISEngine withBehaviors:performModifications:] + 256
23 UIKit 0x2732937d -[UIView(AdditionalLayoutSupport) _withAutomaticEngineOptimizationDisabledIfEngineExists:] + 52
24 UIKit 0x27a65c35 -[UIView(AdditionalLayoutSupport) _updateConstraintsIfNeededAccumulatingViewsNeedingSecondPassAndViewsNeedingBaselineUpdate:forSecondPass:] + 132
25 Foundation 0x2343ddf9 -[NSISEngine withBehaviors:performModifications:] + 256
26 UIKit 0x2732937d -[UIView(AdditionalLayoutSupport) _withAutomaticEngineOptimizationDisabledIfEngineExists:] + 52
27 UIKit 0x27329ecb -[UIView(AdditionalLayoutSupport) updateConstraintsIfNeeded] + 582
28 UIKit 0x278415e7 -[UITableViewCellContentView updateConstraintsIfNeeded] + 182
29 UIKit 0x27a63733 -[UIView(AdditionalLayoutSupport) _systemLayoutSizeFittingSize:withHorizontalFittingPriority:verticalFittingPriority:hasIntentionallyCollapsedHeight:] + 382
30 UIKit 0x276a8edf -[UITableViewCell systemLayoutSizeFittingSize:withHorizontalFittingPriority:verticalFittingPriority:] + 438
31 UIKit 0x2756ce5b -[UITableView _heightForCell:atIndexPath:] + 442
32 UIKit 0x2736e743 __53-[UITableView _configureCellForDisplay:forIndexPath:]_block_invoke + 3186
33 UIKit 0x27231541 +[UIView(Animation) performWithoutAnimation:] + 72
34 UIKit 0x2736dac3 -[UITableView _configureCellForDisplay:forIndexPath:] + 458
35 UIKit 0x275694cd -[UITableView _createPreparedCellForGlobalRow:withIndexPath:willDisplay:] + 776
36 UIKit 0x275695a5 -[UITableView _createPreparedCellForGlobalRow:willDisplay:] + 68
37 UIKit 0x27558b51 -[UITableView _updateVisibleCellsNow:isRecursive:] + 2272
38 UIKit 0x2756dd1b -[UITableView _performWithCachedTraitCollection:] + 78
39 UIKit 0x2730d23b -[UITableView layoutSubviews] + 178
40 UIKit 0x2721ea73 -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 714
41 QuartzCore 0x252b6bcd -[CALayer layoutSublayers] + 128
42 QuartzCore 0x252b2375 CA::Layer::layout_if_needed(CA::Transaction*) + 348
43 QuartzCore 0x252b2209 CA::Layer::layout_and_display_if_needed(CA::Transaction*) + 16
44 QuartzCore 0x252b16d1 CA::Context::commit_transaction(CA::Transaction*) + 368
45 QuartzCore 0x252b13a5 CA::Transaction::commit() + 520
46 QuartzCore 0x253038ff CA::Display::DisplayLink::dispatch_items(unsigned long long, unsigned long long, unsigned long long) + 762
47 IOMobileFramebuffer 0x249ea50b IOMobileFramebufferVsyncNotifyFunc + 86
48 IOKit 0x22ef8759 IODispatchCalloutFromCFMessage + 256
49 CoreFoundation 0x22c5637d __CFMachPortPerform + 132
50 CoreFoundation 0x22c6a5b3 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 34
51 CoreFoundation 0x22c69cc7 __CFRunLoopDoSource1 + 342
52 CoreFoundation 0x22c680d9 __CFRunLoopRun + 1688
53 CoreFoundation 0x22bb7229 CFRunLoopRunSpecific + 520
54 CoreFoundation 0x22bb7015 CFRunLoopRunInMode + 108
55 GraphicsServices 0x241a7ac9 GSEventRunModal + 160
56 UIKit 0x2728b189 UIApplicationMain + 144
57 60SecondsNow 0x127799 main (main.m:15)
58 libdispatch.dylib 0x2285f873 (Missing)
通过这个崩溃报告，我猜这可能是泰卢固语语言脚本的 coretext 库中的问题，请帮助我。
【问题讨论】：
【参考方案1】：我在 Bug Reporter 中针对上述崩溃问题打开了一个 Bug，特别是针对 Telugu Script。
得到了 Apple 的回复，如下所示
"" 苹果开发者关系
工程部门提供了有关此问题的以下信息：
这在 CoreText 中崩溃了。但是，如果此问题在 iOS 10 中得到解决，我们将无法对 iOS 9 进行更新。请验证并确保其在 iOS 11 上运行。
iOS 11 测试版 7 (15A5362a) https://developer.apple.com/download/
如果问题仍然存在，请附上在最新版本中捕获的新 sysdiagnose 并将其附加到错误报告中。
iOS 系统诊断说明： https://developer.apple.com/services-account/download?path=/iOS/iOS_Logs/sysdiagnose_Logging_Instructions.pdf
有关日志记录指令的完整列表，请访问： https://developer.apple.com/bug-reporting/profiles-and-logs/""
【讨论】：
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