iOS文档/文件类型关联 - 通配符UTI？ [英] iOS Document/File type associations - wildcard UTI?

问题描述

我有一个应用程序，它是一个通用文件管理器。我想在使用QLPreviewController，UIDocumentInteractionController等的应用程序中出现Open in ...功能，以便能够向我的应用程序发送任何文件类型。

I have an app which is something of a generic file manager. I would like the "Open in..." functionality present in apps using QLPreviewController, UIDocumentInteractionController, etc to be able to send my app any filetype.

我创建了一个文档类型但是类型是否设置为*，public。*或类似组合我无法让应用程序显示非特定情况（如果我将UTI更改为com，它确实有效。 adobe.pdf，例如）。

I have created a document type but whether the "Types" is set to " * ", "public. * ", or similar combinations I can't get the app to display for non-specific cases (it does work if I change the UTI to com.adobe.pdf, for example).

在Mac OS X上，可以将应用程序设置为所有文件类型的通用查看器 - 这在iOS上是不可能的？

On Mac OS X one can set an app to be a generic viewer of all file types - is this not possible on iOS?

编辑

通过文档，我发现有只有少数原始UTI类型，其他所有类型都继承

Going through the docs, I found there are only a handful of primitive UTI types, from which all others inherit

public.item
public.content 
public.database
public.calendar-event
public.message 
public.contact 
public.archive 
public.url-name
public.executable
com.apple.resolvable 

其中很多都是cl早期从不将成为文件的实例。

Of these, many are clearly never going to be instances of files.

我可能过于雄心勃勃，试图创建一个通配符测试：我尝试了public.item和它通过邮件处理pdf文件。由于文档声明public.item是物理层次结构的基本类型，这可能意味着是通配符，即public.item = *

I may have been overly ambitious trying to create a wildcard test: I tried public.item and it worked on a pdf file from mail. Since the docs state that public.item is the "Base type for the physical hierarchy.", that could mean this is the wildcard, ie " public.item = * "

最糟糕的情况是，我可以添加项目，内容，数据库和存档，并希望获得最佳效果。最好的情况，项目涵盖了所有内容。

Worst case scenario, I could add item, content, database, and archive and hope for the best. Best case scenario, item covers everything.

推荐答案

public.item适用于我迄今为止尝试的每种类型。

public.item works for every type I've tried so far.

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