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我正在开发一个没有 UI 的操作扩展

NSExtensionPointIdentifier : com.apple.services

我正在尝试完成返回 UIView 的扩展程序

MYExternalView *viewTest = [[MYExternalView alloc] init];

NSItemProvider *resultsProvider = [[NSItemProvider alloc] initWithItem:viewTest typeIdentifier:kUTTypeMyCustomType];

NSExtensionItem *resultsItem = [[NSExtensionItem alloc] init];
resultsItem.attachments = @[resultsProvider];

[self.extensionContext completeRequestReturningItems:@[resultsItem] completionHandler:nil];

我的返回视图用非常简单的代码MYExternalView扩展：NSSecureCoding

MYExternalView.h


@interface MYExternalView : UIView < NSSecureCoding >


@end




MYExternalView.m


@implementation MYExternalView

+ (BOOL)supportsSecureCoding {
    return YES;
}

@end

运行此代码我收到错误消息

<Warning>: <NSXPCConnection: 0x17410ae60> connection to service named com.*******.****.****: Warning: Exception caught during decoding of received message, dropping incoming message.
    Exception: Exception while decoding argument 0 (#2 of invocation):
    <NSInvocation: 0x174262580>
    return value: {v} void
    target: {@} 0x0
    selector: {:} _completeRequestReturningItems:forExtensionContextWithUUID:completion:
    argument 2: {@} 0x0
    argument 3: {@} 0x0
    argument 4: {@?} 0x0 (block)

一些想法来解决我的问题？

如果我返回另一种对象，例如字符串，则一切正常。

谢谢。

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