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URL Scheme

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UIDocumentInteractionController

NSURL *url = [NSURL fileURLWithPath:@”Some File URL”];

docController = [UIDocumentInteractionController interactionControllerWithURL:url];

docController.delegate = self;

[docController retain];

- (void)documentInteractionController:(UIDocumentInteractionController *)controller willBeginSendingToApplication:(NSString *)application

- (void)documentInteractionController:(UIDocumentInteractionController *)controller didEndSendingToApplication:(NSString *)application

- (void)documentInteractionControllerDidDismissOpenInMenu:(UIDocumentInteractionController *)controller

See Also

iOS communication between processes(en)
iOS communication between processes(ja)