Eugene Dubinin Eugene Dubinin - 1 year ago 376
iOS Question

Facebook share content only shares URL in iOS 9


works fine in iOS 8 but fails to share
on iOS 9 devices.

The app is built with iOS 9 SDK, Xcode 7, Facebook SDK 4.7.0, all actions mentioned in Preparing Your Apps for iOS9 are done. The app is currently not available in App Store and Facebook app is in dev mode.

The code to present the dialog is pretty common (Swift 2.0):

let content = FBSDKShareLinkContent()

content.contentURL = <URL to the app in the App Store>
content.imageURL = <valid image URL>
content.contentTitle = <some title>
content.contentDescription = <some descr>

let shareDialog = FBSDKShareDialog()
shareDialog.fromViewController = viewController
shareDialog.shareContent = content
shareDialog.delegate = self

if !shareDialog.canShow() {
print("cannot show native share dialog")

On iOS 9 Facebook SDK presents native dialog with no image, title and description:
On iOS 9 Facebook SDK presents native dialog with no image, title and description

At the time the dialog is presented, when the FB app is installed on iOS 9 device, there is an error, which when resolved by adding respective URL to Info.plist does not fix the issue. It is just the log statement that does not appear anymore.

-canOpenURL: failed for URL: "fbapi20150629:/" - error: "This app is not allowed to query for scheme fbapi20150629"

This results in an empty post:
empty post shared from iOS 9 device appearance from the web

On iOS 8, though, the dialog is presented via FB app OR opens in-app Safari vc when FB app is not installed.

For the comparison sake, the same code works from iOS 8 devices:

iOS 8 share post appearance


While @rednuht's answer below solves the initial issue, it worth noting about AppStore URL-specific case pointed out by @sophie-fader

Answer Source

I was having the same issue, and the workaround I'm using is to set the Share Dialog mode to use the native app.

I'm using Obj-C, but should be pretty much the same in Swift:

FBSDKShareDialog *dialog = [[FBSDKShareDialog alloc] init];
dialog.fromViewController = viewController;
dialog.shareContent = content;
dialog.mode = FBSDKShareDialogModeNative; // if you don't set this before canShow call, canShow would always return YES
if (![dialog canShow]) {
    // fallback presentation when there is no FB app
    dialog.mode = FBSDKShareDialogModeFeedBrowser;
[dialog show];

In iOS 9 the user gets the app-switching dialog, but it works fine. There's also FBSDKShareDialogModeWeb, which doesn't have the app-switching dialog, but it doesn't show the image, either.

The default is FBSDKShareDialogModeAutomatic, which chooses FBSDKShareDialogModeShareSheet, which is what you're seeing.

UPDATE: This is the behavior in iOS9 for the available dialog modes:

  • FBSDKShareDialogModeAutomatic: uses ShareSheet, which is the OP case
  • FBSDKShareDialogModeShareSheet: ditto
  • FBSDKShareDialogModeNative: works if the user has the FB app installed, fails silently otherwise. Presents app-switch dialog.
  • FBSDKShareDialogModeBrowser: shares without image
  • FBSDKShareDialogModeWeb: shares without image
  • FBSDKShareDialogModeFeedBrowser: works as intended
  • FBSDKShareDialogModeFeedWeb: works as intended

"Browser" open Safari full-screen, "Web" opens a webview dialog.

I'd go with either of the last two options for iOS9 and Automatic for iOS8.

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