[swift-evolution] What's the Pages/Numbers/Keynote file's UTI in Drop&Drag

[Yun Zeng]

Thank u for ur reply Alex.
Sorry for the wrong topic. So I posted my problem on apple forums.
https://forums.developer.apple.com/message/266174#266174

Alex Blewitt <alblue at apple.com>于2017年10月2日周一 下午6:24写道：

> This isn't an appropriate question for the swift-evolution list. You might
> like to ask it on one of the Apple developer forums at
> https://forums.developer.apple.com
>
> Alex
>
> On 2 Oct 2017, at 08:23, Yun Zeng via swift-evolution <
> swift-evolution at swift.org> wrote:
>
> Hi everyone,
> Recently I am developing Drag&Drop function on iPad and met a problem: I
> can not get Pages/Numbers/Keynote files from performDrop
> in UIDropInteractionDelegate. Here is my solution:
>
> 1. Create my own file item provider, follow the protocol
> NSItemProviderReading.
> 2. *override method readableTypeIdentifiersForItemProvider, register UTI
> of iWorks files which are com.apple.iwork.pages.sffpages,
> com.apple.iwork.numbers.sffnumbers and com.apple.keynote.key.* I got
> those UTI from [[NSWorkspace sharedWorkspace] typeOfFile:filePath error:
> nil]
> 3. override + (instancetype)objectWithItemProviderData:(NSData *)data
> typeIdentifier:(NSString *)typeIdentifier error:(NSError * _Nullable
> __autoreleasing *)outError
> 4. implement canHandleSession of UIDropInteractionDelegate and return [session
> canLoadObjectsOfClass:[DTFileItemProvider class]]
>
> I do the same thing on office files, and it work very well, I can get
> file's data in performDrop. But iWorks file are not.
>
> So did I set the wrong UTI or something?
> --
> Zeng Yun
> iOS Engineer
> Email/QQ: zengyun.programmer at gmail.com
>
> _______________________________________________
> swift-evolution mailing list
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>
> --
Zeng Yun
iOS Engineer
Email/QQ: zengyun.programmer at gmail.com
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