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 <[email protected]>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 < > [email protected]> 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: [email protected] > > _______________________________________________ > swift-evolution mailing list > [email protected] > https://lists.swift.org/mailman/listinfo/swift-evolution > > -- Zeng Yun iOS Engineer Email/QQ: [email protected]
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