使用组合布局和屏幕上的 diffable 数据源删除集合视图的 uiviewrepresentable 时出现运行时崩溃。该视图当前位于 if 语句中，如果未找到数据，它将使用空数据视图而不是显示集合。
if collectionViewModel.showEmptyDataView{
EmptyDataSetViewWithBuilder(title: collectionViewModel.errorDataTilte, description: collectionViewModel.errorDataDescription, image: Constants.EmptyDataSetImages.errorIcon, addButton: false, cartStyle: Themes.CartViewTheme) {
//ViewBuilder
}
}else{
HomeScreenCollectionView(ShopViewModel: collectionViewModel) { itemClicked in
//handle item clicked
}
}
我发现的快速解决方法是删除 if 语句并改用不透明度修饰符。
EmptyDataSetViewWithBuilder(title: collectionViewModel.errorDataTilte, description: collectionViewModel.errorDataDescription, image: Constants.EmptyDataSetImages.errorIcon, addButton: false, cartStyle: Themes.CartViewTheme) {
//ViewBuilder
}.opacity(collectionViewModel.showEmptyDataView ? 1 : 0).zIndex(collectionViewModel.showEmptyDataView ? 1 : 0)
HomeScreenCollectionView(ShopViewModel: collectionViewModel) { itemClicked in
//handle item clicked
}.opacity(!collectionViewModel.showEmptyDataView ? 1 : 0).zIndex(!collectionViewModel.showEmptyDataView ? 1 : 0)
这只发生在 IOS 15 中，我也在控制台中看到了这个日志，[UICollectionViewRecursion] cv == 0x106131c00 Disabling recursion trigger logging我在以前的操作系统中没有看到这个日志。我注意到的另一件事是，这种运行时崩溃更频繁地发生在发布构建配置中。真的很喜欢组合布局和可区分的数据源，所以 id 在整个 ios 15 中继续使用它。但想确保这个错误不会继续发生。它使应用程序崩溃，尤其是在试飞/应用商店中
崩溃报告说它在 _AppearanceActionModifier.MergedBox.disappear+ 3049112 上崩溃
继承人完整的崩溃报告：
Hardware Model: iPhone13,4
Code Type: ARM-64 (Native)
Role: Foreground
Parent Process: launchd [1]
Date/Time: 2021-10-12 17:48:13.6141 -0400
Launch Time: 2021-10-12 17:48:13.2125 -0400
OS Version: iPhone OS 15.0.1 (19A348)
Release Type: User
Baseband Version: 2.09.10
Report Version: 104
Exception Type: EXC_BREAKPOINT (SIGTRAP)
Exception Codes: 0x0000000000000001, 0x000000018923f698
Exception Note: EXC_CORPSE_NOTIFY
Termination Reason: SIGNAL; [5]
Terminating Process: exc handler [7627]
Terminating Process: exc handler [7627]
Triggered by Thread: 0
Thread 0 name: Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0 SwiftUI 0x18923f698 _AppearanceActionModifier.MergedBox.disappear+ 3049112 () + 28
1 SwiftUI 0x1894f9ea4 implicit closure #4 in implicit closure #3 in _AppearanceActionModifier.MergedCallbacks.value.getter + 24
2 SwiftUI 0x189068720 thunk for @escaping @callee_guaranteed () -> + 1120032 () + 28
3 SwiftUI 0x188f8e8fc thunk for @escaping @callee_guaranteed () -> (@out + 227580 ()) + 28
4 SwiftUI 0x189068720 thunk for @escaping @callee_guaranteed () -> + 1120032 () + 28
5 SwiftUI 0x188f6ce68 closure #1 in ViewRendererHost.render+ 89704 (interval:updateDisplayList:) + 2596
6 SwiftUI 0x189033f78 ViewRendererHost.render+ 905080 (interval:updateDisplayList:) + 336
7 SwiftUI 0x188f7fe18 _UIHostingView.layoutSubviews+ 167448 () + 312
8 SwiftUI 0x188f83b24 @objc _UIHostingView.layoutSubviews+ 183076 () + 28
9 UIKitCore 0x183b5ecc8 -[UIView+ 1629384 (CALayerDelegate) layoutSublayersOfLayer:] + 2620
10 QuartzCore 0x1852b8280 CA::Layer::layout_if_needed+ 258688 (CA::Transaction*) + 536
11 QuartzCore 0x1852aaaa8 CA::Layer::layout_and_display_if_needed+ 203432 (CA::Transaction*) + 144
12 QuartzCore 0x1852bf0b0 CA::Context::commit_transaction+ 286896 (CA::Transaction*, double, double*) + 500
13 QuartzCore 0x1852c8174 CA::Transaction::commit+ 323956 () + 680
14 QuartzCore 0x1852aa210 CA::Transaction::flush_as_runloop_observer+ 201232 (bool) + 88
15 UIKitCore 0x183f15c28 _UIApplicationFlushCATransaction + 76
16 UIKitCore 0x1841afad8 _UIUpdateSequenceRun + 84
17 UIKitCore 0x184827294 schedulerStepScheduledMainSection + 144
18 UIKitCore 0x184826760 runloopSourceCallback + 60
19 CoreFoundation 0x1815e2030 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 28
20 CoreFoundation 0x1815f2cf0 __CFRunLoopDoSource0 + 208
21 CoreFoundation 0x18152cff8 __CFRunLoopDoSources0 + 268
22 CoreFoundation 0x181532804 __CFRunLoopRun + 820
23 CoreFoundation 0x1815463c8 CFRunLoopRunSpecific + 600
24 GraphicsServices 0x19cd5738c GSEventRunModal + 164
25 UIKitCore 0x183eec0bc -[UIApplication _run] + 1100
26 UIKitCore 0x183c69be8 UIApplicationMain + 2124
27 SwiftUI 0x189195d90 closure #1 in KitRendererCommon+ 2354576 (_:) + 164
28 SwiftUI 0x1890c2ebc runApp<A>+ 1490620 (_:) + 252
29 SwiftUI 0x1890a4278 static App.main+ 1364600 () + 128
30 Development 0x102bddb90 main + 23440 (<compiler-generated>:0)
31 dyld 0x1060eda24 start + 520
Thread 1:
0 libsystem_pthread.dylib 0x1f19fcf48 start_wqthread + 0
Thread 2:
0 libsystem_pthread.dylib 0x1f19fcf48 start_wqthread + 0
Thread 3:
0 libsystem_pthread.dylib 0x1f19fcf48 start_wqthread + 0
Thread 4:
0 libsystem_pthread.dylib 0x1f19fcf48 start_wqthread + 0
Thread 5 name: com.apple.uikit.eventfetch-thread
Thread 5:
0 libsystem_kernel.dylib 0x1b800a564 mach_msg_trap + 8
1 libsystem_kernel.dylib 0x1b800abfc mach_msg + 76
2 CoreFoundation 0x18152e698 __CFRunLoopServiceMachPort + 372
3 CoreFoundation 0x18153298c __CFRunLoopRun + 1212
4 CoreFoundation 0x1815463c8 CFRunLoopRunSpecific + 600
5 Foundation 0x182d69d54 -[NSRunLoop+ 101716 (NSRunLoop) runMode:beforeDate:] + 236
6 Foundation 0x182dab6a8 -[NSRunLoop+ 370344 (NSRunLoop) runUntilDate:] + 92
7 UIKitCore 0x183e6507c -[UIEventFetcher threadMain] + 524
8 Foundation 0x182db995c __NSThread__start__ + 792
9 libsystem_pthread.dylib 0x1f19fda60 _pthread_start + 148
10 libsystem_pthread.dylib 0x1f19fcf5c thread_start + 8
Thread 6:
0 libsystem_pthread.dylib 0x1f19fcf48 start_wqthread + 0
Thread 7:
0 libsystem_pthread.dylib 0x1f19fcf48 start_wqthread + 0
Thread 8 name: com.google.firebase.crashlytics.MachExceptionServer
Thread 8:
0 libsystem_kernel.dylib 0x1b800bf78 write + 8
1 Development 0x10333156c FIRCLSSDKFileLog + 7705964 (FIRCLSInternalLogging.c:63)
2 Development 0x10332cbc8 FIRCLSMachExceptionReply + 7687112 (FIRCLSMachException.c:267)
3 Development 0x10332c6cc FIRCLSMachExceptionServer + 7685836 (FIRCLSMachException.c:178)
4 libsystem_pthread.dylib 0x1f19fda60 _pthread_start + 148
5 libsystem_pthread.dylib 0x1f19fcf5c thread_start + 8
Thread 9:
0 libsystem_pthread.dylib 0x1f19fcf48 start_wqthread + 0
Thread 10 name: com.apple.NSURLConnectionLoader
Thread 10:
0 libsystem_kernel.dylib 0x1b800a564 mach_msg_trap + 8
1 libsystem_kernel.dylib 0x1b800abfc mach_msg + 76
2 CoreFoundation 0x18152e698 __CFRunLoopServiceMachPort + 372
3 CoreFoundation 0x18153298c __CFRunLoopRun + 1212
4 CoreFoundation 0x1815463c8 CFRunLoopRunSpecific + 600
5 CFNetwork 0x181fb78d0 0x181d3d000 + 2599120
6 Foundation 0x182db995c __NSThread__start__ + 792
7 libsystem_pthread.dylib 0x1f19fda60 _pthread_start + 148
8 libsystem_pthread.dylib 0x1f19fcf5c thread_start + 8
Thread 11:
0 libsystem_kernel.dylib 0x1b800a564 mach_msg_trap + 8
1 libsystem_kernel.dylib 0x1b800abfc mach_msg + 76
2 CoreFoundation 0x18152e698 __CFRunLoopServiceMachPort + 372
3 CoreFoundation 0x18153298c __CFRunLoopRun + 1212
4 CoreFoundation 0x1815463c8 CFRunLoopRunSpecific + 600
5 Foundation 0x182d69d54 -[NSRunLoop+ 101716 (NSRunLoop) runMode:beforeDate:] + 236
6 Foundation 0x182d6a510 -[NSRunLoop+ 103696 (NSRunLoop) run] + 92
7 SwiftUI 0x189014f84 static DisplayLink.asyncThread+ 778116 (arg:) + 836
8 SwiftUI 0x189012b70 @objc static DisplayLink.asyncThread+ 768880 (arg:) + 100
9 Foundation 0x182db995c __NSThread__start__ + 792
10 libsystem_pthread.dylib 0x1f19fda60 _pthread_start + 148
11 libsystem_pthread.dylib 0x1f19fcf5c thread_start + 8
Thread 0 crashed with ARM Thread State (64-bit):
x0: 0x0000000280b49780 x1: 0x0000000280b49780 x2: 0x0000000000000001 x3: 0x00000001930ae4f4
x4: 0x00000000000002e0 x5: 0x00000001063ba020 x6: 0x000000000000005e x7: 0x0000000000000005
x8: 0x00000000ffffffff x9: 0x0000000281e6eb80 x10: 0x0000000000000003 x11: 0x0000000200000003
x12: 0x0000000000000003 x13: 0x000000003a204827 x14: 0x000000003a405000 x15: 0x0000000000005000
x16: 0x000000003a400000 x17: 0x0000000000000f08 x18: 0x0000000114a31600 x19: 0x0000000000000007
x20: 0x0000000280b49780 x21: 0x0000000106219aa8 x22: 0x00000001894fa77c x23: 0x0000000000000002
x24: 0x00000001db34e000 x25: 0x00000001db9758d8 x26: 0x00000001db34e000 x27: 0x0000000106219a50
x28: 0x0000000281e6c140 fp: 0x000000016d223790 lr: 0x00000001894f9ea4
sp: 0x000000016d223780 pc: 0x000000018923f698 cpsr: 0x80000000
far: 0x000000011c084000 esr: 0xf2000001 (Breakpoint) brk 1
Binary Images:
0x188f57000 - 0x189f77fff SwiftUI arm64e <6d99bb3b20803dbbaecf604b49eb822d> /System/Library/Frameworks/SwiftUI.framework/SwiftUI
0x1839d1000 - 0x185253fff UIKitCore arm64e <0e2d8679d5f13c0390107f6ce3662789> /System/Library/PrivateFrameworks/UIKitCore.framework/UIKitCore
0x185279000 - 0x18555cfff QuartzCore arm64e <8ab30eebfb1536cb9c27918ed68500ee> /System/Library/Frameworks/QuartzCore.framework/QuartzCore
0x181527000 - 0x18197afff CoreFoundation arm64e <6174789ae88c3f5cba39de2e9edc0750> /System/Library/Frameworks/CoreFoundation.framework/CoreFoundation
0x19cd56000 - 0x19cd5efff GraphicsServices arm64e <0f7424f6bde5311aa3fac0e0c4c28d72> /System/Library/PrivateFrameworks/GraphicsServices.framework/GraphicsServices
0x102bd8000 - 0x103983fff Development arm64 <d40c6dc01ef5385687bfe7476ba7240f> /private/var/containers/Bundle/Application/4F3744A5-3BEF-472F-8674-AF6F0414AE5F/Development.app/Development
0x1060d4000 - 0x10612bfff dyld arm64e <d48c31ee061f370ba6f78391a1b53ed8> /usr/lib/dyld
0x1f19fc000 - 0x1f1a07fff libsystem_pthread.dylib arm64e <bc1ce0c6a9f2396b9afb623d3acd5881> /usr/lib/system/libsystem_pthread.dylib
0x1b8009000 - 0x1b803cfff libsystem_kernel.dylib arm64e <d2476f74d204348d8d386165d0485c7c> /usr/lib/system/libsystem_kernel.dylib
0x182d51000 - 0x183055fff Foundation arm64e <efbca2ff8b8c3227abbc154ba851d23c> /System/Library/Frameworks/Foundation.framework/Foundation
0x181d3d000 - 0x182201fff CFNetwork arm64e <570aad29ce5c3cd9ab01ad21e1440ddb> /System/Library/Frameworks/CFNetwork.framework/CFNetwork
EOF
让我知道我是否可以提供更多信息来帮助解决这个问题。