Hello,
In an iOS project, that is supposed to handle different kind of files,
I declared in Info.plist the types handled, with two UTI types, say
com.mycompany.typeA and com.mycompany.typeB. I also added the expected filename
extensions for the two, suppose it's .typeA and .typeB.
Now, I instantiate my UIDocument, with the following code: (all
inspired by UIKit docs, I stripped off some details for the sake of lisibility,
the file is guaranteed not to exist in the app folder.)
NSString *newDocumentPath = [ AppDocumentPath()
stringByAppendingPathComponent: @"NewDocument.typeA" ];
// Gives me a valid path to
<AppHome>/Documents/NewDocument.typeA
NSURL *newDocumentURL = [ NSURL fileURLWithPath: newDocumentPath ];
// Creates a file:// for that path.
MyDocument *newDocument = [ [ MyDocument alloc ] initWithFileURL:
newDocumentURL ];
// Instantiates the doc
// Finally present.
[ newDocument saveToURL: newDocumentURL
forSaveOperation: UIDocumentSaveForCreating
completionHandler: ^(BOOL success) {
[ self presentViewController:
newDocument.viewController animated: YES completion: ^(){} ];
} ];
There, in the process of saving, in UIDocument's -
(id)contentsForType:(NSString *)typeName error:(NSError **)outError
typeName is dyn.age81u5dmr3wu, not conforming to UTI for typeA or typeB.
The url is correct.
At any other point in the execution, fileType reports the wrong type.
With a colleague, we tried on another app where it wasn't checked for
since it handles only one file format, and it's exactly the same, fileType
returns another UTI from the one declared in the Info.plist.
All of this under iOS7.
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