我在使用带有新 Xamarin Unified iOS API 的 WKWebView 时遇到了一些问题，它在加载时崩溃并出现 EXC_BAD_ACCESS (SIGABRT) - KERN_INVALID_ADDRESS 异常（必须为此挖掘电话日志，Visual Studio 中没有任何显示。
我希望有人对此有一些经验。下面似乎是有问题的代码，它在经典 API 中运行良好（尽管由于 API 差异而进行了微小的更改）。如果我注释掉 3 WKWebView 行，以及将其添加到控制器的行，应用程序就会运行。注意：Window、Controller、WKWebView都是appdelegate类的参数。
public override bool FinishedLaunching(UIApplication app, NSDictionary options)
{
Window = new UIWindow(UIScreen.MainScreen.Bounds);
Window.BackgroundColor = UIColor.White;
Window.MakeKeyAndVisible();
Controller = new UIViewController();
Controller.View.AutosizesSubviews = true;
Window.RootViewController = Controller;
var wkConfig = new WKWebViewConfiguration();
WKWebView = new WKWebView(new CGRect(0, 20, (float)UIScreen.MainScreen.Bounds.Width, (float)UIScreen.MainScreen.Bounds.Height - 20), wkConfig);
WKWebView.LoadRequest(new NSUrlRequest(new NSUrl(RazorRouting.GetRootUrl())));
Controller.View.AddSubview(WKWebView);
return true;
}
这是崩溃报告的相关部分（崩溃线程堆栈跟踪）
Incident Identifier: 4C8B4F14-0412-48AC-A94A-70BEDFB07A07
CrashReporter Key: 35ac6193617557278e0d2ddbc984b0442b429f07
Hardware Model: iPhone5,3
Process: OurAppNameiOS [2311]
Path: /private/var/mobile/Containers/Bundle/Application/003A0100-F79D-48A5-BEB5- 24CC9568E49A/OurAppNameiOS.app/OurAppNameiOS
Identifier: com.OurApp.OurAppName
Version: 1.0 (1.0)
Code Type: ARM (Native)
Parent Process: launchd [1]
Date/Time: 2014-10-28 07:57:50.403 -0400
Launch Time: 2014-10-28 07:57:45.692 -0400
OS Version: iOS 8.1 (12B411)
Report Version: 105
Exception Type: EXC_BAD_ACCESS (SIGABRT)
Exception Subtype: KERN_INVALID_ADDRESS at 0x00000004
Triggered by Thread: 0
Thread 0 name: Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0 libsystem_kernel.dylib 0x3766fdfc __pthread_kill + 8
1 libsystem_pthread.dylib 0x376edd32 pthread_kill + 58
2 libsystem_c.dylib 0x3760f904 abort + 72
3 OurAppNameiOS 0x00c15866 0xe1000 + 11749478
4 OurAppNameiOS 0x00c1de5c 0xe1000 + 11783772
5 libsystem_platform.dylib 0x376e9878 _sigtramp + 40
6 WebKit 0x2d6820a6 -[WKWebView initWithFrame:configuration:] + 570
7 OurAppNameiOS 0x00bd80c0 0xe1000 + 11497664
8 OurAppNameiOS 0x00bb6ba4 0xe1000 + 11361188
9 OurAppNameiOS 0x000eb4b0 0xe1000 + 42160
10 OurAppNameiOS 0x0029d5a0 0xe1000 + 1820064
11 OurAppNameiOS 0x00c20058 0xe1000 + 11792472
12 OurAppNameiOS 0x00c5d296 0xe1000 + 12042902
13 OurAppNameiOS 0x00bf0a5c 0xe1000 + 11598428
14 OurAppNameiOS 0x00bf1584 0xe1000 + 11601284
15 UIKit 0x2cd6c71c -[UIApplication _handleDelegateCallbacksWithOptions:isSuspended:restoreState:] + 280
16 UIKit 0x2cf615aa -[UIApplication _callInitializationDelegatesForMainScene:transitionContext:] + 2354
17 UIKit 0x2cf63af6 -[UIApplication _runWithMainScene:transitionContext:completion:] + 1370
18 UIKit 0x2cf6e374 __84-[UIApplication _handleApplicationActivationWithScene:transitionContext:completion:]_block_invoke + 32
19 UIKit 0x2cf62384 -[UIApplication workspaceDidEndTransaction:] + 128
20 FrontBoardServices 0x2ffcf0e6 __31-[FBSSerialQueue performAsync:]_block_invoke + 10
21 CoreFoundation 0x2980939a __CFRUNLOOP_IS_CALLING_OUT_TO_A_BLOCK__ + 10
22 CoreFoundation 0x2980865c __CFRunLoopDoBlocks + 212
23 CoreFoundation 0x29806dde __CFRunLoopRun + 758
24 CoreFoundation 0x2975520c CFRunLoopRunSpecific + 472
25 CoreFoundation 0x2975501e CFRunLoopRunInMode + 102
26 UIKit 0x2cd663ea -[UIApplication _run] + 554
27 UIKit 0x2cd611cc UIApplicationMain + 1436
28 OurAppNameiOS 0x00bd8e00 0xe1000 + 11501056
29 OurAppNameiOS 0x00bada10 0xe1000 + 11323920
30 OurAppNameiOS 0x00bad9d0 0xe1000 + 11323856
31 OurAppNameiOS 0x000ea27c 0xe1000 + 37500
32 OurAppNameiOS 0x0029d5a0 0xe1000 + 1820064
33 OurAppNameiOS 0x00c20058 0xe1000 + 11792472
34 OurAppNameiOS 0x00c5d296 0xe1000 + 12042902
35 OurAppNameiOS 0x00c60516 0xe1000 + 12055830
36 OurAppNameiOS 0x00c60354 0xe1000 + 12055380
37 OurAppNameiOS 0x00c0ead4 0xe1000 + 11721428
38 OurAppNameiOS 0x00cb18c4 0xe1000 + 12388548
39 OurAppNameiOS 0x00bf2700 0xe1000 + 11605760
40 libdyld.dylib 0x375a9aac start + 0