PDF 未显示 Swift 共享扩展

Question

使用Swift5.3.2，iOS13.0，

我的共享扩展程序适用于图像和视频。

但它不适用于 PDF。

问题是我的应用在我尝试与我的应用共享的 PDF 文档的共享应用列表中不可见。

我知道必须在 info.plist 中正确设置规则。

我尝试了以下两次尝试 - 但都没有成功！

谁能告诉我 iOS 中的 PDF 共享扩展需要什么？

尝试 1：Info.plist

<key>NSExtension</key>
<dict>
    <key>NSExtensionAttributes</key>
    <dict>
        <key>NSExtensionActivationRule</key>
        <dict>
            <key>NSExtensionActivationSupportsFileWithMaxCount</key>
            <integer>20</integer>
            <key>NSExtensionActivationSupportsWebPageWithMaxCount</key>
            <integer>1</integer>
            <key>NSExtensionActivationSupportsWebURLWithMaxCount</key>
            <integer>1</integer>
            <key>NSExtensionActivationSupportsImageWithMaxCount</key>
            <integer>100</integer>
            <key>NSExtensionActivationSupportsMovieWithMaxCount</key>
            <integer>25</integer>
        </dict>
    </dict>
    <key>NSExtensionPointIdentifier</key>
    <string>com.apple.share-services</string>
    <key>NSExtensionPrincipalClass</key>
    <string>CustomShareNavigationController</string>
</dict>

尝试 2：Info.plist

<key>NSExtension</key>
<dict>
    <key>NSExtensionAttributes</key>
    <dict>
        <key>NSExtensionActivationRule</key>
        <string>
        SUBQUERY (
            extensionItems,
            $extensionItem,
                SUBQUERY (
                    $extensionItem.attachments,
                    $attachment,
                    ANY $attachment.registeredTypeIdentifiers UTI-CONFORMS-TO "com.adobe.pdf"
                    || ANY $attachment.registeredTypeIdentifiers UTI-CONFORMS-TO "public.file-url"
                    || ANY $attachment.registeredTypeIdentifiers UTI-CONFORMS-TO "public.url"
                    || ANY $attachment.registeredTypeIdentifiers UTI-CONFORMS-TO "public.jpeg"
                    || ANY $attachment.registeredTypeIdentifiers UTI-CONFORMS-TO "public.png"
                ).@count == $extensionItem.attachments.@count
        ).@count == 1
        </string>
    </dict>
    <key>NSExtensionPointIdentifier</key>
    <string>com.apple.share-services</string>
    <key>NSExtensionPrincipalClass</key>
    <string>CustomShareNavigationController</string>
</dict>

Answer 1

当您在 Safari 中启动 PDF 共享时，它实际上会考虑 2 个输入项：PDF 和 URL。由于您的 NSExtensionActivationRule 谓词明确指出 @count == 1，因此它将返回 false，因为有超过 1 个元素与您的谓词匹配。因此，解决方法是将 @count == 1 更改为 @count >= 1 或任何最适合您的应用程序的逻辑。

更新了对我有用的查询：

<key>NSExtensionActivationRule</key>
<string>
SUBQUERY (
    extensionItems,
    $extensionItem,
        SUBQUERY (
            $extensionItem.attachments,
            $attachment,
            ANY $attachment.registeredTypeIdentifiers UTI-CONFORMS-TO "com.adobe.pdf"
            || ANY $attachment.registeredTypeIdentifiers UTI-CONFORMS-TO "public.file-url"
            || ANY $attachment.registeredTypeIdentifiers UTI-CONFORMS-TO "public.url"
            || ANY $attachment.registeredTypeIdentifiers UTI-CONFORMS-TO "public.jpeg"
            || ANY $attachment.registeredTypeIdentifiers UTI-CONFORMS-TO "public.png"
        ).@count == $extensionItem.attachments.@count
).@count >= 1
</string>