Getting the URL of a file my app is opening via openURL:

Question

I configured my app with a custom file type. I added the information required in the Info.plist file (Document Types and Exported UTIs). Now iOS recognizes my file type and associates it with the app. So, for example, when I open Mail, and I see my file as an attachment, I can click on it and select to open with my app.

How I can get the URL of the file from my app? I tried to use OpenUrl on UIApplication, but it does not work.

Anyone know how to do that?

Thanks for sharing the solution, but please put it in an answer below rather than into the body of your question. [It's perfectly acceptable to answer your own question](http://meta.stackexchange.com/questions/120215/ended-up-solving-my-own-problem-question-what-to-do-with-the-post?lq=1). — jscs, May 31 '14 at 18:32

score 2 · Accepted Answer · answered May 31 '14 at 18:35

SOLUTION FOUND

I state that I need a solution for Xamarin/C#, but I asked for a standard objective-c code to later translate in C#, becouse I could not find anything about that.

At the end this is the solution that worked for me:

In the AppDelegate.cs file I add this method:

public override bool OpenUrl (UIApplication application, NSUrl url, string sourceApplication, NSObject annotation)
{
     NSNotificationCenter.DefaultCenter.PostNotification (NSNotification.FromName ("OpenMyFile", url));
     return true;
}

Then in my main controller, I add this in the "ViewDidLoad" method:

NSNotificationCenter.DefaultCenter.AddObserver ("OpenMyFile", openFileVoid);

And in the same class I add a new method:

public async void openFileVoid (NSNotification notification)
{
    NSUrl _filePath = (NSUrl)notification.Object;
    // Do what you need with this file path
}

I hope can be useful to someone! :)

score 1 · Answer 2 · answered May 31 '14 at 15:38

I think it has nothing to do with -[UIApplication openURL:].

As it was stated in Apple Doc :

You receive information about the file to be opened in the application:willFinishLaunchingWithOptions: or application:didFinishLaunchingWithOptions: method of your application delegate. If your application handles custom file types, you must implement this delegate method (instead of the applicationDidFinishLaunching: method) and use it to initialize your application.

The options dictionary passed to the application:willFinishLaunchingWithOptions: or application:didFinishLaunchingWithOptions: method contains information about the file to be opened.

You can read about it more in the doc.

Getting the URL of a file my app is opening via openURL:

2 Answers2

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