Swiftui 应用程序在 iOS 14/15 上因不同的 SearchBar (ViewModifier) 而崩溃-6ren

Swiftui 应用程序在 iOS 14/15 上因不同的 SearchBar (ViewModifier) 而崩溃

转载作者：行者123 更新时间：2023-12-05 08:29:26

我在 iOS 14 上使用 SwiftlySearch，在 iOS 15 上使用 .searchable。

struct CompatibleSearchBarModifier: ViewModifier {
    
    @Binding var text: String
    
    @ViewBuilder
    func body(content: Content) -> some View {
        if #available(iOS 15.0, *) {
            content.searchable(text: self.$text, prompt: "Placeholder")
                
        } else {
            content.navigationBarSearch(self.$text, placeholder: "Placeholder", hidesSearchBarWhenScrolling: true, cancelClicked: {text = ""})
        }
    }
}

基于 Crashlytics，应用程序在 iOS 14.7.1-14.8 设备上崩溃。不幸的是，我无法在 Xcode 13.2.1 上重现该问题，因为我无法在模拟器上使用这些 iOS 版本(我试过这个库但没有成功:https://github.com/JinjunHan/iOSDeviceSupport)。在这种情况下我能做什么？

Crashed: com.apple.main-thread
0  libswiftCore.dylib             0x313dbc swift::ResolveAsSymbolicReference::operator()(swift::Demangle::__runtime::SymbolicReferenceKind, swift::Demangle::__runtime::Directness, int, void const*)
1  libswiftCore.dylib             0x33170c swift::Demangle::__runtime::Demangler::demangleSymbolicReference(unsigned char)
2  libswiftCore.dylib             0x32e970 swift::Demangle::__runtime::Demangler::demangleType(__swift::__runtime::llvm::StringRef, std::__1::function<swift::Demangle::__runtime::Node* (swift::Demangle::__runtime::SymbolicReferenceKind, swift::Demangle::__runtime::Directness, int, void const*)>)
3  libswiftCore.dylib             0x31935c swift_getTypeByMangledNameImpl(swift::MetadataRequest, __swift::__runtime::llvm::StringRef, void const* const*, std::__1::function<swift::TargetMetadata<swift::InProcess> const* (unsigned int, unsigned int)>, std::__1::function<swift::TargetWitnessTable<swift::InProcess> const* (swift::TargetMetadata<swift::InProcess> const*, unsigned int)>)
4  libswiftCore.dylib             0x316d58 swift::swift_getTypeByMangledName(swift::MetadataRequest, __swift::__runtime::llvm::StringRef, void const* const*, std::__1::function<swift::TargetMetadata<swift::InProcess> const* (unsigned int, unsigned int)>, std::__1::function<swift::TargetWitnessTable<swift::InProcess> const* (swift::TargetMetadata<swift::InProcess> const*, unsigned int)>)
5  libswiftCore.dylib             0x316f6c swift_getTypeByMangledNameInContext
6  Menetrend                      0xb7b0 __swift_instantiateConcreteTypeFromMangledName + 4331173808 (<compiler-generated>:4331173808)
7  Menetrend                      0x205750 CompatibleSearchBarModifier.body(content:) + 1107 (FavouritesView.swift:1107)
8  SwiftUI                        0x60a160 partial apply for closure #1 in ModifierBodyAccessor.updateBody(of:changed:)
9  SwiftUI                        0x62c364 closure #1 in BodyAccessor.setBody(_:)
10 SwiftUI                        0x609a64 ModifierBodyAccessor.updateBody(of:changed:)
11 SwiftUI                        0x62c770 DynamicBody.updateValue()
12 SwiftUI                        0x32f764 partial apply for implicit closure #2 in implicit closure #1 in closure #1 in closure #1 in Attribute.init<A>(_:)
13 AttributeGraph                 0x5108 AG::Graph::UpdateStack::update()
14 AttributeGraph                 0x5518 AG::Graph::update_attribute(AG::data::ptr<AG::Node>, bool)
15 AttributeGraph                 0xa718 AG::Graph::input_value_ref_slow(AG::data::ptr<AG::Node>, AG::AttributeID, unsigned int, AGSwiftMetadata const*, bool*, long)
16 AttributeGraph                 0x1b3c0 AGGraphGetValue
17 SwiftUI                        0x972c80 _ConditionalContent<>.ChildView.content.getter
18 SwiftUI                        0x972e20 _ConditionalContent<>.ChildView.value.getter
19 SwiftUI                        0x972f30 protocol witness for Rule.value.getter in conformance _ConditionalContent<A, B><>.ChildView
20 SwiftUI                        0x23e6e0 implicit closure #2 in implicit closure #1 in closure #1 in closure #1 in Attribute.init<A>(_:)
21 AttributeGraph                 0x5108 AG::Graph::UpdateStack::update()
22 AttributeGraph                 0x5518 AG::Graph::update_attribute(AG::data::ptr<AG::Node>, bool)
23 AttributeGraph                 0xa718 AG::Graph::input_value_ref_slow(AG::data::ptr<AG::Node>, AG::AttributeID, unsigned int, AGSwiftMetadata const*, bool*, long)
24 AttributeGraph                 0x1b3c0 AGGraphGetValue
25 SwiftUI                        0x62fec8 AnyViewList.updateValue()
26 SwiftUI                        0x205f0c partial apply for specialized implicit closure #2 in implicit closure #1 in closure #1 in closure #1 in Attribute.init<A>(_:)
27 AttributeGraph                 0x5108 AG::Graph::UpdateStack::update()
28 AttributeGraph                 0x5518 AG::Graph::update_attribute(AG::data::ptr<AG::Node>, bool)
29 AttributeGraph                 0xa718 AG::Graph::input_value_ref_slow(AG::data::ptr<AG::Node>, AG::AttributeID, unsigned int, AGSwiftMetadata const*, bool*, long)
30 AttributeGraph                 0x1b3c0 AGGraphGetValue
31 SwiftUI                        0x4661e8 DynamicLayoutViewAdaptor.updatedItems()
32 SwiftUI                        0x4cac4 specialized DynamicContainerInfo.updateItems(disableTransitions:)
33 SwiftUI                        0x4b854 specialized DynamicContainerInfo.updateValue()
34 SwiftUI                        0x1c924c partial apply for specialized implicit closure #2 in implicit closure #1 in closure #1 in closure #1 in Attribute.init<A>(_:)
35 AttributeGraph                 0x5108 AG::Graph::UpdateStack::update()
36 AttributeGraph                 0x5518 AG::Graph::update_attribute(AG::data::ptr<AG::Node>, bool)
37 AttributeGraph                 0xa718 AG::Graph::input_value_ref_slow(AG::data::ptr<AG::Node>, AG::AttributeID, unsigned int, AGSwiftMetadata const*, bool*, long)
38 AttributeGraph                 0x1b3c0 AGGraphGetValue
39 SwiftUI                        0x328b5c DynamicPreferenceCombiner.info.getter
40 SwiftUI                        0x328d00 DynamicPreferenceCombiner.value.getter
41 SwiftUI                        0x23e6e0 implicit closure #2 in implicit closure #1 in closure #1 in closure #1 in Attribute.init<A>(_:)
42 AttributeGraph                 0x5108 AG::Graph::UpdateStack::update()
43 AttributeGraph                 0x5518 AG::Graph::update_attribute(AG::data::ptr<AG::Node>, bool)
44 AttributeGraph                 0xa718 AG::Graph::input_value_ref_slow(AG::data::ptr<AG::Node>, AG::AttributeID, unsigned int, AGSwiftMetadata const*, bool*, long)
45 AttributeGraph                 0x1b3c0 AGGraphGetValue
46 SwiftUI                        0x5d7510 HostPreferencesTransform.updateValue()
47 SwiftUI                        0x32f764 partial apply for implicit closure #2 in implicit closure #1 in closure #1 in closure #1 in Attribute.init<A>(_:)
48 AttributeGraph                 0x5108 AG::Graph::UpdateStack::update()
49 AttributeGraph                 0x5518 AG::Graph::update_attribute(AG::data::ptr<AG::Node>, bool)
50 AttributeGraph                 0xa718 AG::Graph::input_value_ref_slow(AG::data::ptr<AG::Node>, AG::AttributeID, unsigned int, AGSwiftMetadata const*, bool*, long)
51 AttributeGraph                 0x1b3c0 AGGraphGetValue
52 SwiftUI                        0x5d7510 HostPreferencesTransform.updateValue()
53 SwiftUI                        0x32f764 partial apply for implicit closure #2 in implicit closure #1 in closure #1 in closure #1 in Attribute.init<A>(_:)
54 AttributeGraph                 0x5108 AG::Graph::UpdateStack::update()
55 AttributeGraph                 0x5518 AG::Graph::update_attribute(AG::data::ptr<AG::Node>, bool)
56 AttributeGraph                 0xa718 AG::Graph::input_value_ref_slow(AG::data::ptr<AG::Node>, AG::AttributeID, unsigned int, AGSwiftMetadata const*, bool*, long)
57 AttributeGraph                 0x1b3c0 AGGraphGetValue
58 SwiftUI                        0x7e4d0 specialized HostPreferencesTransform.updateValue()
59 SwiftUI                        0x1e4590 partial apply for specialized implicit closure #2 in implicit closure #1 in closure #1 in closure #1 in Attribute.init<A>(_:)
60 AttributeGraph                 0x5108 AG::Graph::UpdateStack::update()
61 AttributeGraph                 0x5518 AG::Graph::update_attribute(AG::data::ptr<AG::Node>, bool)
62 AttributeGraph                 0xa1a8 AG::Graph::value_ref(AG::AttributeID, AGSwiftMetadata const*, bool*)
63 AttributeGraph                 0x1b408 AGGraphGetValue
64 SwiftUI                        0x8e9f38 GraphHost.preferenceValues()
65 SwiftUI                        0x84fcec specialized GraphHost.preferenceValue<A>(_:)
66 SwiftUI                        0x84aacc specialized ViewRendererHost.updateViewGraph<A>(body:)
67 SwiftUI                        0x6463c specialized closure #1 in UINavigationController.update<A>(with:in:)
68 SwiftUI                        0x45cf40 thunk for @escaping @callee_guaranteed () -> ()
69 SwiftUI                        0x84ed74 closure #1 in ViewRendererHost.render(interval:updateDisplayList:)
70 SwiftUI                        0x84ae68 ViewRendererHost.render(interval:updateDisplayList:)
71 SwiftUI                        0x9a7654 _UIHostingView.layoutSubviews()
72 SwiftUI                        0x9a7680 @objc _UIHostingView.layoutSubviews()
73 UIKitCore                      0x102f8bc -[UIView(CALayerDelegate) layoutSublayersOfLayer:]
74 QuartzCore                     0x15e424 -[CALayer layoutSublayers]
75 QuartzCore                     0x164bac CA::Layer::layout_if_needed(CA::Transaction*)
76 QuartzCore                     0x17016c CA::Layer::layout_and_display_if_needed(CA::Transaction*)
77 QuartzCore                     0xb8578 CA::Context::commit_transaction(CA::Transaction*, double, double*)
78 QuartzCore                     0xe32c8 CA::Transaction::commit()
79 UIKitCore                      0xb4d8b0 __34-[UIApplication _firstCommitBlock]_block_invoke_2
80 CoreFoundation                 0x9ad08 __CFRUNLOOP_IS_CALLING_OUT_TO_A_BLOCK__
81 CoreFoundation                 0x99f9c __CFRunLoopDoBlocks
82 CoreFoundation                 0x9472c __CFRunLoopRun
83 CoreFoundation                 0x93ed0 CFRunLoopRunSpecific
84 GraphicsServices               0x3570 GSEventRunModal
85 UIKitCore                      0xb302d0 -[UIApplication _run]
86 UIKitCore                      0xb3584c UIApplicationMain
87 SwiftUI                        0x881530 closure #1 in KitRendererCommon(_:)
88 SwiftUI                        0x8814c0 runApp<A>(_:)
89 SwiftUI                        0x432870 static App.main()
90 Menetrend                      0x6cb8 main + 4331154616 (TripDetailsStop.swift:4331154616)
91 libdyld.dylib                  0x1140 start

最佳答案

更新:这已在 XCode 13.3 上修复。请更新到那个版本。如果你不想更新，我会在下面留下我的答案。

我的应用程序也遇到了同样的问题，用户报告在 iOS 14 上随机崩溃，我的崩溃日志看起来与您的非常相似。帮助我找到解决方案的主线是 __swift_instantiateConcreteTypeFromMangledName(它在您的崩溃报告的第 6 行和我的第 7 行)。

我的模拟器崩溃报告:

Thread 0 Crashed::  Dispatch queue: com.apple.main-thread
0   libswiftCore.dylib                     0x18eb3a0f0 swift::ResolveAsSymbolicReference::operator()(swift::Demangle::SymbolicReferenceKind, swift::Demangle::Directness, int, void const*) + 64
1   libswiftCore.dylib                     0x18eb519ac swift::Demangle::Demangler::demangleSymbolicReference(unsigned char) + 200
2   libswiftCore.dylib                     0x18eb519ac swift::Demangle::Demangler::demangleSymbolicReference(unsigned char) + 200
3   libswiftCore.dylib                     0x18eb4eda0 swift::Demangle::Demangler::demangleType(llvm::StringRef, std::__1::function<swift::Demangle::Node* (swift::Demangle::SymbolicReferenceKind, swift::Demangle::Directness, int, void const*)>) + 184
4   libswiftCore.dylib                     0x18eb3f158 swift_getTypeByMangledNameImpl(swift::MetadataRequest, llvm::StringRef, void const* const*, std::__1::function<swift::TargetMetadata<swift::InProcess> const* (unsigned int, unsigned int)>, std::__1::function<swift::TargetWitnessTable<swift::InProcess> const* (swift::TargetMetadata<swift::InProcess> const*, unsigned int)>) + 460
5   libswiftCore.dylib                     0x18eb3cc88 swift::swift_getTypeByMangledName(swift::MetadataRequest, llvm::StringRef, void const* const*, std::__1::function<swift::TargetMetadata<swift::InProcess> const* (unsigned int, unsigned int)>, std::__1::function<swift::TargetWitnessTable<swift::InProcess> const* (swift::TargetMetadata<swift::InProcess> const*, unsigned int)>) + 540
6   libswiftCore.dylib                     0x18eb3ce80 swift_getTypeByMangledNameInContext + 128
7   Asobi                                  0x1040bef40 __swift_instantiateConcreteTypeFromMangledName + 52
8   Asobi                                  0x1040c9eb0 thunk for @escaping @callee_guaranteed (@guaranteed Bookmark) -> (@out _ConditionalContent<AnyView, <<opaque return type of View.contextMenu<A>(menuItems:)>>.0>) + 8 [inlined]
9   Asobi                                  0x1040c9eb0 partial apply for thunk for @escaping @callee_guaranteed (@guaranteed Bookmark) -> (@out _ConditionalContent<AnyView, <<opaque return type of View.contextMenu<A>(menuItems:)>>.0>) + 24
10  SwiftUI                                0x1b40abee8 ForEachChild.updateValue() + 852
11  SwiftUI                                0x1b3c8bd5c partial apply for implicit closure #2 in implicit closure #1 in closure #1 in closure #1 in Attribute.init<A>(_:) + 28
12  AttributeGraph                         0x1aa00b1f4 AG::Graph::UpdateStack::update() + 484
13  AttributeGraph                         0x1aa00b5fc AG::Graph::update_attribute(AG::data::ptr<AG::Node>, bool) + 320
14  AttributeGraph                         0x1aa010544 AG::Graph::input_value_ref_slow(AG::data::ptr<AG::Node>, AG::AttributeID, unsigned int, AGSwiftMetadata const*, bool*, long) + 380
15  AttributeGraph                         0x1aa021210 AGGraphGetValue + 220
16  SwiftUI                                0x1b426ab34 _ConditionalContent<>.ChildView.content.getter + 60
17  SwiftUI                                0x1b426ac5c _ConditionalContent<>.ChildView.value.getter + 260
18  SwiftUI                                0x1b426ad44 protocol witness for Rule.value.getter in conformance _ConditionalContent<A, B><>.ChildView + 40
19  SwiftUI                                0x1b3a76728 implicit closure #2 in implicit closure #1 in closure #1 in closure #1 in Attribute.init<A>(_:) + 68
20  AttributeGraph                         0x1aa00b1f4 AG::Graph::UpdateStack::update() + 484
21  AttributeGraph                         0x1aa00b5fc AG::Graph::update_attribute(AG::data::ptr<AG::Node>, bool) + 320
22  AttributeGraph                         0x1aa010544 AG::Graph::input_value_ref_slow(AG::data::ptr<AG::Node>, AG::AttributeID, unsigned int, AGSwiftMetadata const*, bool*, long) + 380
23  AttributeGraph                         0x1aa021210 AGGraphGetValue + 220
24  SwiftUI                                0x1b3f45b14 AnyViewList.updateValue() + 56
25  SwiftUI                                0x1b3c2a9a8 partial apply for specialized implicit closure #2 in implicit closure #1 in closure #1 in closure #1 in Attribute.init<A>(_:) + 20
26  AttributeGraph                         0x1aa00b1f4 AG::Graph::UpdateStack::update() + 484
27  AttributeGraph                         0x1aa00b5fc AG::Graph::update_attribute(AG::data::ptr<AG::Node>, bool) + 320
28  AttributeGraph                         0x1aa0104a8 AG::Graph::input_value_ref_slow(AG::data::ptr<AG::Node>, AG::AttributeID, unsigned int, AGSwiftMetadata const*, bool*, long) + 224
29  AttributeGraph                         0x1aa021018 AGGraphGetInputValue + 268
30  SwiftUI                                0x1b40a6e44 closure #1 in ForEachState.traitKeys.getter + 120
31  SwiftUI                                0x1b40a729c ForEachState.forEachItem(from:style:do:) + 976
32  SwiftUI                                0x1b40a6db8 ForEachState.traitKeys.getter + 52
33  SwiftUI                                0x1b40ab6cc ForEachList.traitKeys.getter + 20
34  SwiftUI                                0x1b4207b34 Sections.init(from:reifyEmptyHeaders:useFooters:) + 132
35  SwiftUI                                0x1b3e02fb0 SystemListDataSource.init(_:style:minRowHeight:minHeaderHeight:) + 108
36  SwiftUI                                0x1b4134278 InsettableGroupedListBody.Body.body.getter + 564
37  SwiftUI                                0x1b3c72d7c partial apply for closure #1 in ViewBodyAccessor.updateBody(of:changed:) + 28
38  SwiftUI                                0x1b3f41f88 closure #1 in BodyAccessor.setBody(_:) + 44
39  SwiftUI                                0x1b3c6e0e4 ViewBodyAccessor.updateBody(of:changed:) + 1340
40  SwiftUI                                0x1b3f42304 DynamicBody.updateValue() + 268
41  SwiftUI                                0x1b3c8bd5c partial apply for implicit closure #2 in implicit closure #1 in closure #1 in closure #1 in Attribute.init<A>(_:) + 28
42  AttributeGraph                         0x1aa00b1f4 AG::Graph::UpdateStack::update() + 484
43  AttributeGraph                         0x1aa00b5fc AG::Graph::update_attribute(AG::data::ptr<AG::Node>, bool) + 320
44  AttributeGraph                         0x1aa010544 AG::Graph::input_value_ref_slow(AG::data::ptr<AG::Node>, AG::AttributeID, unsigned int, AGSwiftMetadata const*, bool*, long) + 380
45  AttributeGraph                         0x1aa021210 AGGraphGetValue + 220
46  SwiftUI                                0x1b3e929e4 ListCore.Child.core.getter + 68
47  SwiftUI                                0x1b3e92b1c ListCore.Child.value.getter + 268
48  SwiftUI                                0x1b3a76728 implicit closure #2 in implicit closure #1 in closure #1 in closure #1 in Attribute.init<A>(_:) + 68
49  AttributeGraph                         0x1aa00b1f4 AG::Graph::UpdateStack::update() + 484
50  AttributeGraph                         0x1aa00b5fc AG::Graph::update_attribute(AG::data::ptr<AG::Node>, bool) + 320
51  AttributeGraph                         0x1aa010544 AG::Graph::input_value_ref_slow(AG::data::ptr<AG::Node>, AG::AttributeID, unsigned int, AGSwiftMetadata const*, bool*, long) + 380
52  AttributeGraph                         0x1aa021210 AGGraphGetValue + 220
53  SwiftUI                                0x1b3f41a60 StaticBody.container.getter + 76
54  SwiftUI                                0x1b3f42070 StaticBody.updateValue() + 116
55  SwiftUI                                0x1b3c8bd5c partial apply for implicit closure #2 in implicit closure #1 in closure #1 in closure #1 in Attribute.init<A>(_:) + 28
56  AttributeGraph                         0x1aa00b1f4 AG::Graph::UpdateStack::update() + 484
57  AttributeGraph                         0x1aa00b5fc AG::Graph::update_attribute(AG::data::ptr<AG::Node>, bool) + 320
58  AttributeGraph                         0x1aa010544 AG::Graph::input_value_ref_slow(AG::data::ptr<AG::Node>, AG::AttributeID, unsigned int, AGSwiftMetadata const*, bool*, long) + 380
59  AttributeGraph                         0x1aa021210 AGGraphGetValue + 220
60  SwiftUI                                0x1b3977568 specialized UnaryPositionAwareChildGeometry.layout.getter + 24
61  SwiftUI                                0x1b3977648 specialized UnaryPositionAwareChildGeometry.value.getter + 112
62  SwiftUI                                0x1b3a228d4 specialized implicit closure #2 in implicit closure #1 in closure #1 in closure #1 in Attribute.init<A>(_:) + 36
63  SwiftUI                                0x1b3a3d15c partial apply for specialized implicit closure #2 in implicit closure #1 in closure #1 in closure #1 in Attribute.init<A>(_:) + 24
64  AttributeGraph                         0x1aa00b1f4 AG::Graph::UpdateStack::update() + 484
65  AttributeGraph                         0x1aa00b5fc AG::Graph::update_attribute(AG::data::ptr<AG::Node>, bool) + 320
66  AttributeGraph                         0x1aa010544 AG::Graph::input_value_ref_slow(AG::data::ptr<AG::Node>, AG::AttributeID, unsigned int, AGSwiftMetadata const*, bool*, long) + 380
67  AttributeGraph                         0x1aa021210 AGGraphGetValue + 220
68  SwiftUI                                0x1b3a6a2e0 LayoutPositionQuery.localPosition.getter + 24
69  SwiftUI                                0x1b3a6a34c LayoutPositionQuery.updateValue() + 36
70  SwiftUI                                0x1b3c2aae4 partial apply for specialized implicit closure #2 in implicit closure #1 in closure #1 in closure #1 in Attribute.init<A>(_:) + 20
71  AttributeGraph                         0x1aa00b1f4 AG::Graph::UpdateStack::update() + 484
72  AttributeGraph                         0x1aa00b5fc AG::Graph::update_attribute(AG::data::ptr<AG::Node>, bool) + 320
73  AttributeGraph                         0x1aa010544 AG::Graph::input_value_ref_slow(AG::data::ptr<AG::Node>, AG::AttributeID, unsigned int, AGSwiftMetadata const*, bool*, long) + 380
74  AttributeGraph                         0x1aa021210 AGGraphGetValue + 220
75  SwiftUI                                0x1b41833f0 AnimatableFrameAttribute.updateValue() + 52
76  SwiftUI                                0x1b3c2b0dc partial apply for specialized implicit closure #2 in implicit closure #1 in closure #1 in closure #1 in Attribute.init<A>(_:) + 20
77  AttributeGraph                         0x1aa00b1f4 AG::Graph::UpdateStack::update() + 484
78  AttributeGraph                         0x1aa00b5fc AG::Graph::update_attribute(AG::data::ptr<AG::Node>, bool) + 320
79  AttributeGraph                         0x1aa013e60 AG::Subgraph::update(unsigned int) + 864
80  SwiftUI                                0x1b41e66a0 GraphHost.runTransaction() + 164
81  SwiftUI                                0x1b3d80790 ViewGraph.updateOutputs(at:) + 96
82  SwiftUI                                0x1b4153d84 closure #1 in ViewRendererHost.render(interval:updateDisplayList:) + 1232
83  SwiftUI                                0x1b414c45c ViewRendererHost.render(interval:updateDisplayList:) + 308
84  SwiftUI                                0x1b429d934 _UIHostingView.layoutSubviews() + 168
85  SwiftUI                                0x1b429d960 @objc _UIHostingView.layoutSubviews() + 24
86  UIKitCore                              0x1848c603c -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 2540
87  QuartzCore                             0x1875fb374 -[CALayer layoutSublayers] + 288
88  QuartzCore                             0x187601860 CA::Layer::layout_if_needed(CA::Transaction*) + 504
89  UIKitCore                              0x1848b2b34 -[UIView(Hierarchy) layoutBelowIfNeeded] + 524
90  UIKitCore                              0x183c132bc -[_UISheetPresentationController _sheetLayoutInfoLayout:] + 48
91  UIKitCore                              0x183c0f6bc -[_UISheetLayoutInfo _layout] + 312
92  UIKitCore                              0x183c150fc __54-[_UISheetPresentationController transitionWillBegin:]_block_invoke_2 + 52
93  UIKitCore                              0x1848b9408 +[UIView(Animation) performWithoutAnimation:] + 96
94  UIKitCore                              0x183c15030 __54-[_UISheetPresentationController transitionWillBegin:]_block_invoke.362 + 128
95  UIKitCore                              0x183d391cc -[_UIViewControllerTransitionCoordinator _applyBlocks:releaseBlocks:] + 264
96  UIKitCore                              0x183d35cbc -[_UIViewControllerTransitionContext __runAlongsideAnimations] + 256
97  UIKitCore                              0x1848b91ec __63+[UIView(Animation) _setAlongsideAnimations:toRunByEndOfBlock:]_block_invoke + 28
98  UIKitCore                              0x18488e748 -[UIViewAnimationState _runAlongsideAnimations] + 32
99  UIKitCore                              0x18488d638 -[UIViewAnimationState pop] + 52
100 UIKitCore                              0x18488adf8 +[UIViewAnimationState popAnimationState] + 64
101 UIKitCore                              0x1848bab84 +[UIView _setupAnimationWithDuration:delay:view:options:factory:animations:start:animationStateGenerator:completion:] + 648
102 UIKitCore                              0x1848baff8 +[UIView(UIViewAnimationWithBlocks) animateWithDuration:delay:options:animations:completion:] + 96
103 UIKitCore                              0x184886940 __50-[UITransitionView _startTransition:withDuration:]_block_invoke.164 + 76
104 UIKitCore                              0x1848bb4f4 +[UIView(UIViewAnimationWithBlocks) conditionallyAnimate:withAnimation:layout:completion:] + 88
105 UIKitCore                              0x184886788 -[UITransitionView _startTransition:withDuration:] + 1156
106 UIKitCore                              0x18488607c -[UITransitionView transition:fromView:toView:removeFromView:] + 2416
107 UIKitCore                              0x183d31d34 -[UIViewControllerBuiltinTransitionViewAnimator animateTransition:] + 1476
108 UIKitCore                              0x183d39dc8 ___UIViewControllerTransitioningRunCustomTransition_block_invoke_2 + 72
109 UIKitCore                              0x183e66d6c +[UIInputResponderController _pinInputViewsForInputResponderController:onBehalfOfResponder:duringBlock:] + 104
110 UIKitCore                              0x183d39d48 ___UIViewControllerTransitioningRunCustomTransition_block_invoke.641 + 176
111 UIKitCore                              0x1848b90f0 +[UIView(Animation) _setAlongsideAnimations:toRunByEndOfBlock:] + 172
112 UIKitCore                              0x183d39bb0 _UIViewControllerTransitioningRunCustomTransition + 580
113 UIKitCore                              0x183c00b00 __56-[UIPresentationController runTransitionForCurrentState]_block_invoke.466 + 2180
114 UIKitCore                              0x184867084 -[_UIAfterCACommitBlock run] + 64
115 UIKitCore                              0x1843d4728 _runAfterCACommitDeferredBlocks + 296
116 UIKitCore                              0x1843c48e8 _cleanUpAfterCAFlushAndRunDeferredBlocks + 200
117 UIKitCore                              0x1843f4cb4 _afterCACommitHandler + 76
118 CoreFoundation                         0x180362190 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 32
119 CoreFoundation                         0x18035c90c __CFRunLoopDoObservers + 556
120 CoreFoundation                         0x18035ce7c __CFRunLoopRun + 992
121 CoreFoundation                         0x18035c58c CFRunLoopRunSpecific + 572
122 GraphicsServices                       0x18b634740 GSEventRunModal + 160
123 UIKitCore                              0x1843c5cbc -[UIApplication _run] + 964
124 UIKitCore                              0x1843caa9c UIApplicationMain + 112
125 SwiftUI                                0x1b41859d8 closure #1 in KitRendererCommon(_:) + 108
126 SwiftUI                                0x1b4185968 runApp<A>(_:) + 160
127 SwiftUI                                0x1b3d7a890 static App.main() + 80
128 Asobi                                  0x1040be9cc static AsobiApp.$main() + 28 (AsobiApp.swift:10) [inlined]
129 Asobi                                  0x1040be9cc main + 40
130 dyld                                   0x104f150f4 start + 520

经过一些挖掘，我发现这个崩溃报告是由于 Xcode 13.2 和 13.2.1 上的 Swift 编译器中的一个错误。

论坛帖子:https://developer.apple.com/forums/thread/697070

这里的主要问题是，在发布版本中使用 #if available(使用在您的情况下可搜索的任何 iOS 15 特定 API)会破坏 iOS 14 及以下版本的 SwiftUI 应用程序。 Apple 已意识到此错误，目前没有官方的解决方法。

论坛帖子中一些用户建议的解决方法是:

使用 Xcode 13.1
更改 swift 编译器以在发布版本上使用 -Onone
使用此解决方法 https://github.com/gongzhang/swiftui-availability-check-crash

我使用了 Github 链接中提供的解决方法，但如果您想使用 -Onone 路线，我在下面提供了说明。

如何设置-Onone

转到您的应用目标
转到该目标的build设置
在顶部栏中选择All
搜索优化
在 Swift Compiler - Code Generation 下，将发布部分的 Optimization Level 设置为 -Onone。

如果您不想设置编译器选项，这是我对您的问题的解决方案，您将收到 Xcode 警告，但暂时忽略它:

struct CompatibleSearchBarModifier: ViewModifier {
    @Binding var text: String
    
    @ViewBuilder
    func body(content: Content) -> some View {
        if #available(iOS 15.0, *) {
            Group {
                if #available(iOS 15.0, *) {
                    content.searchable(text: self.$text, prompt: "Placeholder")
                }
            }
        } else {
            content.navigationBarSearch(self.$text, placeholder: "Placeholder", hidesSearchBarWhenScrolling: true, cancelClicked: {text = ""})
        }
    }
}

我建议向 Apple 发送反馈助理报告，以便他们可以仔细查看此错误。

我希望 Apple 在 Xcode 13.3 或其他 13.2.x 更新中修复此问题。

关于Swiftui 应用程序在 iOS 14/15 上因不同的 SearchBar (ViewModifier) 而崩溃，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/70506330/

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Swiftui 应用程序在 iOS 14/15 上因不同的 SearchBar (ViewModifier) 而崩溃