FBSDKShareDialog of Facebook SDK is not working on iOS9?

Question

With Xcode7, I upgrade Facebook SDK to pod FBSDKShareKit (4.6.0). And I have added Facebook scheme to WhiteList as below. reference: https://developers.facebook.com/docs/ios/ios9

<key>LSApplicationQueriesSchemes</key>
<array>
        <string>fbapi</string>
        <string>fb-messenger-api</string>
        <string>fbauth2</string>
        <string>fbshareextension</string>
</array>

However, the following code only show iOS default social dialog on iOS9. The same code with the same binary on iOS8 can open Facebook app and show the Sharing Dialog properly.

FBSDKShareLinkContent *content = [[FBSDKShareLinkContent alloc] init];
content.contentURL = [NSURL URLWithString:[NSString stringWithFormat:@"http://www.example.com"]];
content.contentDescription = @"Test";
[FBSDKShareDialog showFromViewController:self withContent:content delegate:nil];

I guess Facebook app is not found on iOS9 and then show the default social dialog. Even no error message showed.

Do I miss anything? Or, it's an iOS9 bug?

Answer 1

I'm guessing Facebook changed the behaviour because iOS 9 now pops up a dialog asking if you would like to "Open Facebook?" when doing app-switching. Even for FBSDKLoginManager, the app-switching (native) method seems to be less preferred than a modal UIWebView.

However, you can still force the share dialog to switch to the Facebook app (assuming you have your application plist setup as described in https://developers.facebook.com/docs/ios/ios9) by using this method:

FBSDKShareDialog *dialog = [[FBSDKShareDialog alloc] init];

if ([[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:@"fbauth2://"]]){
    dialog.mode = FBSDKShareDialogModeNative;
}
else {
    dialog.mode = FBSDKShareDialogModeBrowser; //or FBSDKShareDialogModeAutomatic
}
dialog.shareContent = content;
dialog.delegate = self;
dialog.fromViewController = self;
[dialog show];

Answer 2

In iOS 9 below is the only solution that worked for me to detect if facebook app is installed in the device or not:

 NSString *urlString = @"fbapi://";
    NSURL *url1 = [NSURL URLWithString:urlString];

    if ([[UIApplication sharedApplication] canOpenURL:url1]) {
        [[UIApplication sharedApplication] openURL:url1];
    }
    else {
        [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"itunes link for download app"]];
    }