I have a method called useDocument which runs when the property (a UIDocument subclass called ‘document’) of my view controller gets set. Here’s the method:
- (void)useDocument
{
if (![[NSFileManager defaultManager] fileExistsAtPath:self.document.fileURL.path]) {
//
// Does not exist on disk, save
//
[self.document saveToURL:self.document.fileURL
forSaveOperation:UIDocumentSaveForCreating
completionHandler:^(BOOL success) {
if (!success) {
NSLog(@"Failed to create file at url: %@", self.document.fileURL);
} else {
NSLog(@"Created file at %@", self.document.fileURL);
}
}];
} else if (self.document.documentState == UIDocumentStateClosed) {
//
// Document is closed, open
//
[self.document openWithCompletionHandler:^(BOOL success) {
if (!success) {
NSLog(@"Failed to open file at url: %@", self.document.fileURL);
} else {
NSLog(@"Opened file at %@", self.document.fileURL);
}
}];
} else if (self.document.documentState == UIDocumentStateNormal) {
//
// Document is ready to be used
//
}
}
The view controller successfully gets pushed on to the stack and shown, but when the file doesn’t exist and has to be saved, there is a noticeable gap (about 11 seconds) between the log which says the file has been saved, and the navigation bar content appearing (a UIBarButtonItem)
I should also point out that the UICollectionView inside the view controller shows itself.
Does anyone know why this might be?
