feature: open with extension

Pixiview.iOS.OpenExtension/ShareViewController.cs

@@ -0,0 +1,46 @@
+using Foundation;
+using MobileCoreServices;
+using UIKit;
+
+namespace Pixiview.iOS.OpenExtension
+{
+    [Register("OpenExtensionHandler")]
+    public class OpenExtensionHandler : NSExtensionRequestHandling
+    {
+
+        public override void BeginRequestWithExtensionContext(NSExtensionContext context)
+        {
+            bool urlFound = false;
+
+            foreach (var item in context.InputItems)
+            {
+                foreach (var provider in item.Attachments)
+                {
+                    if (provider.HasItemConformingTo(UTType.URL))
+                    {
+                        provider.LoadItem(UTType.URL, null, (obj, error) =>
+                        {
+                            var url = obj as NSUrl;
+                            if (url != null)
+                            {
+                                var uri = NSUrl.FromString($"pixiview://open{url.Path}");
+                                System.Diagnostics.Debug.WriteLine($"open url: {uri}");
+                                BeginInvokeOnMainThread(() => UIApplication.SharedApplication.OpenUrl(uri));
+                            }
+                        });
+
+                        urlFound = true;
+                        break;
+                    }
+                }
+
+                if (urlFound)
+                {
+                    break;
+                }
+            }
+
+            context.CompleteRequest(new NSExtensionItem[0], null);
+        }
+    }
+}