uti

Is it possible to find a list of all existing Uniform Type Identifiers on a system? How about /System/Library/Frameworks/CoreServices.framework/Frameworks/LaunchServices.framework/Versions/A/Support/lsregister -dump Even better: A Graph of all Universal Type Identifiers - Kevin Ballard's Blog You can build your own graph with UTIsExplorer https://github.com/nst/UTIsExplorer The project includes a graph of all UTIs on my machine: http://seriot.ch/resources/utis_graph/utis_graph.pdf 来源： https://stackoverflow.com/questions/12554187/list-search-all-existing-utis-uniform-type-identifiers

I want to attach an image to a MMS, on iOS7. I wrote following code: MFMessageComposeViewController *messageController = [[MFMessageComposeViewController alloc] init]; messageController.messageComposeDelegate = self; NSData *imgData = [NSData dataWithContentsOfFile:@"blablabla"]; BOOL didAttachImage = [messageController addAttachmentData:imgData typeIdentifier:@"public.data" filename:@"image"]; if (didAttachImage) { // Present message view controller on screen [self presentViewController:messageController animated:YES completion:nil]; } else { UIAlertView *warningAlert = [[UIAlertView alloc]

I am trying to implement the registering process that allows my iOS app to show up in the "Open in" list of other applications (as described in Apple's Document Interaction Programming Topics ). I want my app to be able to handle audio from any app that will provide a standard audio file format (MP3, AIFF, WAV, etc.). As I understand it, all I should need to do is add the CFBundleDocumentTypes key, with relevant subdata, to my app's Info.plist. This is what I put in (via Xcode 4's Document Types editor): <key>CFBundleDocumentTypes</key> <array> <dict> <key>CFBundleTypeIconFiles</key> <array>