我刚刚从AppStore安装了Xcode 11，并创建了一个SwiftUI项目。尝试在画布中查看ContentView时，每次Xcode崩溃
我尝试清理并删除DerivedData，创建不同的视图和不同的项目都没有成功
Application Specific Information:
ProductBuildVersion: 11A420a
Dyld Error Message:
Symbol not found: _$s7SwiftUI7BindingV13dynamicMemberACyqd__Gs15WritableKeyPathCyxqd__G_tcluig
Referenced from: /Applications/Xcode.app/Contents/PlugIns/UVKit.framework/UVKit
Expected in: /System/Library/Frameworks/SwiftUI.framework/Versions/A/SwiftUI
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 dyld 0x000000011043b44e __abort_with_payload + 10
1 dyld 0x000000011046499e abort_with_payload_wrapper_internal + 80
2 dyld 0x00000001104649d0 abort_with_payload + 9
3 dyld 0x00000001104621b3 dyld::halt(char const*) + 463
4 dyld 0x00000001103eca02 dyld::fastBindLazySymbol(ImageLoader**, unsigned long) + 140
5 libdyld.dylib 0x00007fff6c59d29e dyld_stub_binder + 282
6 ??? 0x0000000131da48e8 OBJC_CLASS_$__TtCV5UVKit19DiagnosticsPullDown10MenuTarget + 120
7 com.apple.dt.UVKit 0x0000000131ceb3d9 protocol witness for View.body.getter in conformance InsetEditor + 9
8 com.apple.SwiftUI 0x00007fff4259da39 ViewBody.apply(_:) + 585
9 com.apple.SwiftUI 0x00007fff4259ec29 protocol witness for static UntypedAttribute._update(_:graph:attribute:) in conformance ViewBody<A> + 137
10 com.apple.AttributeGraph 0x00007fff490ec259 partial apply + 25
11 com.apple.AttributeGraph 0x00007fff490d55a7 AG::Graph::UpdateStack::update() + 1111
12 com.apple.AttributeGraph 0x00007fff490d5865 AG::Graph::update_attribute(unsigned int, bool) + 377
13 com.apple.AttributeGraph 0x00007fff490d8e6f AG::Graph::input_value_ref_slow(unsigned int, unsigned int, AGTypeID, bool*) + 199
14 com.apple.SwiftUI 0x00007fff425f32b9 LayoutTraitsProxy.layoutTraits() + 41
15 com.apple.SwiftUI 0x00007fff42a5d8e3 accumulateSpacing #1 (ofChild:) in StackLayout.Header.init(layoutContext:proxies:majorAxis:minorAxisAlignment:uniformSpacing:childStorage:capacity:) + 563
16 com.apple.SwiftUI 0x00007fff42a5cd25 StackLayout.Header.init(layoutContext:proxies:majorAxis:minorAxisAlignment:uniformSpacing:childStorage:capacity:) + 805
17 com.apple.SwiftUI 0x00007fff42a5d62d specialized ManagedBufferPointer.init(bufferClass:minimumCapacity:makingHeaderWith:) + 349
18 com.apple.SwiftUI 0x00007fff42a5fc29 specialized closure #2 in HVStack.updateOutput<A>(attributeContext:layoutContext:children:) + 329
19 com.apple.SwiftUI 0x00007fff42a6208a partial apply for specialized + 42
20 com.apple.SwiftUI 0x00007fff426a8367 specialized static LayoutComputerDelegate.update<A>(_:maybeInPlace:create:) + 247
21 com.apple.SwiftUI 0x00007fff426b6290 specialized static LayoutComputerDelegate.update<A>(_:maybeInPlace:create:) + 16
22 com.apple.SwiftUI 0x00007fff42a5ac8c specialized HVStack.updateOutput<A>(attributeContext:layoutContext:children:) + 220
23 com.apple.SwiftUI 0x00007fff42a5acf0 specialized HVStack.updateOutput<A>(attributeContext:layoutContext:children:) + 48
24 com.apple.SwiftUI 0x00007fff4281a9f6 specialized LayoutQuery<>.update(context:) + 358
25 com.apple.SwiftUI 0x00007fff4293c7ea partial apply for protocol witness for static UntypedAttribute._update(_:graph:attribute:) in conformance DynamicLayoutViewChildGeometry + 26
26 com.apple.AttributeGraph 0x00007fff490d55a7 AG::Graph::UpdateStack::update() + 1111
27 com.apple.AttributeGraph 0x00007fff490d5865 AG::Graph::update_attribute(unsigned int, bool) + 377
28 com.apple.AttributeGraph 0x00007fff490d8e6f AG::Graph::input_value_ref_slow(unsigned int, unsigned int, AGTypeID, bool*) + 199
29 com.apple.SwiftUI 0x00007fff425f32b9 LayoutTraitsProxy.layoutTraits() + 41
30 com.apple.SwiftUI 0x00007fff42a5d8e3 accumulateSpacing #1 (ofChild:) in StackLayout.Header.init(layoutContext:proxies:majorAxis:minorAxisAlignment:uniformSpacing:childStorage:capacity:) + 563
31 com.apple.SwiftUI 0x00007fff42a5cd25 StackLayout.Header.init(layoutContext:proxies:majorAxis:minorAxisAlignment:uniformSpacing:childStorage:capacity:) + 805
32 com.apple.SwiftUI 0x00007fff42a5d62d specialized ManagedBufferPointer.init(bufferClass:minimumCapacity:makingHeaderWith:) + 349
33 com.apple.SwiftUI 0x00007fff42a5fc29 specialized closure #2 in HVStack.updateOutput<A>(attributeContext:layoutContext:children:) + 329
34 com.apple.SwiftUI 0x00007fff42a6208a partial apply for specialized + 42
35 com.apple.SwiftUI 0x00007fff426a8367 specialized static LayoutComputerDelegate.update<A>(_:maybeInPlace:create:) + 247
36 com.apple.SwiftUI 0x00007fff426b6290 specialized static LayoutComputerDelegate.update<A>(_:maybeInPlace:create:) + 16
37 com.apple.SwiftUI 0x00007fff42a5ac8c specialized HVStack.updateOutput<A>(attributeContext:layoutContext:children:) + 220
38 com.apple.SwiftUI 0x00007fff42a5acf0 specialized HVStack.updateOutput<A>(attributeContext:layoutContext:children:) + 48
39 com.apple.SwiftUI 0x00007fff4281a9f6 specialized LayoutQuery<>.update(context:) + 358
40 com.apple.SwiftUI 0x00007fff4293c7ea partial apply for protocol witness for static UntypedAttribute._update(_:graph:attribute:) in conformance DynamicLayoutViewChildGeometry + 26
41 com.apple.AttributeGraph 0x00007fff490d55a7 AG::Graph::UpdateStack::update() + 1111
42 com.apple.AttributeGraph 0x00007fff490d5865 AG::Graph::update_attribute(unsigned int, bool) + 377
43 com.apple.AttributeGraph 0x00007fff490d8e6f AG::Graph::input_value_ref_slow(unsigned int, unsigned int, AGTypeID, bool*) + 199
44 com.apple.SwiftUI 0x00007fff425f32b9 LayoutTraitsProxy.layoutTraits() + 41
45 com.apple.SwiftUI 0x00007fff42a5d8e3 accumulateSpacing #1 (ofChild:) in StackLayout.Header.init(layoutContext:proxies:majorAxis:minorAxisAlignment:uniformSpacing:childStorage:capacity:) + 563
46 com.apple.SwiftUI 0x00007fff42a5cd25 StackLayout.Header.init(layoutContext:proxies:majorAxis:minorAxisAlignment:uniformSpacing:childStorage:capacity:) + 805
47 com.apple.SwiftUI 0x00007fff42a5d62d specialized ManagedBufferPointer.init(bufferClass:minimumCapacity:makingHeaderWith:) + 349
48 com.apple.SwiftUI 0x00007fff42a5fc29 specialized closure #2 in HVStack.updateOutput<A>(attributeContext:layoutContext:children:) + 329
49 com.apple.SwiftUI 0x00007fff42a6208a partial apply for specialized + 42
50 com.apple.SwiftUI 0x00007fff426a8367 specialized static
我能做些什么吗？
编辑：创建全新项目时生成的ContentView代码：
import SwiftUI
struct ContentView: View {
var body: some View {
Text("Hello World")
}
}
struct ContentView_Previews: PreviewProvider {
static var previews: some View {
ContentView()
}
}
答案 0 :(得分：3)
预览画布不适用于Mojave，仅适用于Catalina。 Catalina的当前版本是Beta9。我希望Mojave无法正常运行。如果在Mojave上使用游乐场或在设备上运行，您仍然可以看到SwiftUI的效果。