创建没有UI的iOS操作扩展 [英] Create iOS Action Extension with no UI

问题描述

我正在尝试创建类似于iOS中可用的系统复制"操作的操作扩展.
我找到了不同的答案，说不可能有非全屏UI，但是根据 Apple官方文档，可能没有UI(我想就像在复制"操作中一样).

I am trying to create an Action Extension similar to the system "Copy" action available in iOS.
I found different answers saying it's not possible to have non-fullscreen UI, but according to Apple Official Documentation it is possible to have no UI (like in the Copy action, I presume).

操作(iOS和macOS； UI和非UI变体)

Action (iOS and macOS; UI and non-UI variants)

我尝试创建透明视图，但结果始终是全屏黑色覆盖.
我已经在我的 Info.plist 中将 NSExtensionActionWantsFullScreenPresentation 指定为 NO ，但是没有任何变化.

I have tried creating a transparent view, but the result is always a fullscreen black overlay.
I have already specified NSExtensionActionWantsFullScreenPresentation to NO in my Info.plist, but nothing changes.

关于如何做到这一点的任何想法?

Any idea about how to do it?

推荐答案

要回答我自己的问题:实际上可以通过分配属性 NSExtensionRequestHandling 协议.

To answer my own question: it is actually possible to create a non-UI Action Extension on iOS by assigning the property NSExtensionPrincipalClass to a class implementing a NSExtensionRequestHandling protocol.

示例:

class ActionRequestHandler: NSObject, NSExtensionRequestHandling {

    var extensionContext: NSExtensionContext?

    func beginRequest(with context: NSExtensionContext) {
        // Do not call super in an Action extension with no user interface
        self.extensionContext = context

        // Do stuff with the context

    }
}

创建扩展的最简单方法是添加一个新目标(文件">新建">目标")，选择操作扩展"，然后在操作类型.

The easiest way to create an extension like this is to add a new target (File > New > Target), select Action Extension and then select No User Interface in the Action Type.

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