Is is a bug of iOS 15 itself?
What can I do to fix this?
It crashs when [UIPrintPreviewViewController reloadVisibleItems]
It only happends on iOS from 15.0.0 to 15.5.0 so far
When will UIPrintPreviewViewController reloadVisibleItems ?
We can't even reproduce the crash, but we get lots crash reports on Firebase.
Source code
UIPrintInteractionController *controller = [UIPrintInteractionController sharedPrintController];
if (controller) {
UIPrintInfo *printInfo = [UIPrintInfo printInfo];
printInfo.outputType = UIPrintInfoOutputGeneral;
printInfo.duplex = UIPrintInfoDuplexLongEdge;
controller.printInfo = printInfo;
controller.printingItems = [self dataList];
LYWeakifySelf;
void (^completionHandler)(UIPrintInteractionController *, BOOL, NSError *) =
^(UIPrintInteractionController *controller, BOOL completed, NSError *error) {
};
[controller presentAnimated:YES completionHandler:completionHandler];
}
- (NSArray<NSData *> *)dataList {
NSMutableArray *dataList = [NSMutableArray array];
[self enumerateDataUsingBlock:^(NSData *data, NSString *fileName) {
[dataList addObject:data];
}];
return dataList;
}
Crash info on Firebase
Fatal Exception: NSInternalInconsistencyException. attempt to delete item 1 from section 0 which only contains 0 items before the update.
Stack trace
0 CoreFoundation __exceptionPreprocess
1 libobjc.A.dylib objc_exception_throw
2 Foundation _userInfoForFileAndLine
3 UIKitCore -[UICollectionView _endItemAnimationsWithInvalidationContext:tentativelyForReordering:animator:collectionViewAnimator:]
4 UIKitCore -[UICollectionView _updateRowsAtIndexPaths:updateAction:updates:]
5 UIKitCore -[UICollectionView reloadItemsAtIndexPaths:]
6 UIKitCore -[UIPrintPreviewViewController reloadVisibleItems:]
7 UIKitCore __58-[UIPrintPreviewViewController updateLayoutWithPdfUpdate:]_block_invoke_2
8 Foundation __NSBLOCKOPERATION_IS_CALLING_OUT_TO_A_BLOCK__
9 Foundation -[NSBlockOperation main]
10 Foundation __NSOPERATION_IS_INVOKING_MAIN__
11 Foundation -[NSOperation start]
12 Foundation __NSOPERATIONQUEUE_IS_STARTING_AN_OPERATION__
13 Foundation __NSOQSchedule_f
14 libdispatch.dylib _dispatch_block_async_invoke2
15 libdispatch.dylib _dispatch_client_callout
16 libdispatch.dylib _dispatch_main_queue_drain
17 libdispatch.dylib _dispatch_main_queue_callback_4CF
18 CoreFoundation __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__
19 CoreFoundation __CFRunLoopRun
20 CoreFoundation CFRunLoopRunSpecific
21 GraphicsServices GSEventRunModal
22 UIKitCore -[UIApplication _run]
23 UIKitCore UIApplicationMain
24 EverLens main.m - Line 14
main + 14