选择了相同类型的多个动作时扩展激活规则谓词不隐藏行动 [英] Action Extension activation rule predicate doesn't hide the action when multiple of the same type is selected

问题描述

您好，我正在尝试进行操作扩展，使其仅适用于单个GIF文件.这是我的代码(使用Apple文档中提供的代码段创建:

SUBQUERY (
    extensionItems,
    $extensionItem,
    SUBQUERY (
        $extensionItem.attachments,
        $attachment,
        ANY $attachment.registeredTypeIdentifiers UTI-CONFORMS-TO "com.compuserve.gif"
    ).@count == $extensionItem.attachments.@count
).@count == 1

该扩展程序应该可以在Photos应用程序中使用，并且我已经尝试了多种方案:单个GIF文件，单个非GIF文件，多个非GIF文件，GIF和非GIF文件的混合以及多个GIF文件./p>

以上所有方案均适用，但多个GIF文件除外-如果我选择了多个项目，则该操作会重新出现.

我希望仅在使用单个GIF时显示操作.上面的谓词我在做什么?

解决方案

从调试代码开始，似乎它是带有一堆附件的单个扩展项.因此，仅支持单个附件，您需要执行以下操作:

将$ extensionItem.attachments.@ count替换为1.

如果您选择了1个以上的GIF文件，这应该隐藏您的扩展名.

Hello I am trying to make action extension to only work with a single GIF file. Here is my code (created using the snippet provided in Apple's documentation:

SUBQUERY (
    extensionItems,
    $extensionItem,
    SUBQUERY (
        $extensionItem.attachments,
        $attachment,
        ANY $attachment.registeredTypeIdentifiers UTI-CONFORMS-TO "com.compuserve.gif"
    ).@count == $extensionItem.attachments.@count
).@count == 1

This extension is supposed to work inside Photos app and I have tried multiple scenarios: Single GIF file, Single Non-GIF file, Multiple Non-GIF files, Mix of GIF and Non-GIF files, and Multiple GIF files.

All the above scenarios work except for Multiple GIF files - if I select multiple items, the action reappears.

I want the action to only appear when I am using single GIF. What am I doing wrong with the predicate above?

解决方案

From debugging the code, it seems like it is a single extension item with a bunch of attachments. So to support only a single attachment you would to do the following:

Replace $extensionItem.attachments.@count with 1.

This should hide your extension if you are selecting more than 1 GIF file.

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