I'm in the process of updating projects to Swift 2 and iOS 9. One of the projects I'm doing relies heavily on Facebooks SDK. I use it to login, get user information, ect... Prior ot the update, once you logged in the Safari would redirect you directly to the app. Now I'm getting a fun little modal displaying the following (See Fig 1 at bottom)
I assume this has some connection to the new Info.plist key we add LSApplicationQueriesSchemes with a Item0 as fbauth2 now required by iOS 9.
I also noticed I'm getting a stack trace with my app saying:
failed for URL: "fbauth2:///" - error: "(null)"
I found the reoccurence of the new key data fbauth2 interesting, and I'm assuming that there is now a way to configure what this modal will say upon redirect. Does anyone have any idea how to configure this? I'm assuming this is a common issue for all those updating their apps. Thanks!
Fig 1
Make sure that you have updated to the newest version of the Facebook SDK at http://fb.me/FacebookSDKs-iOS-20150910.zip.
You will also want to Whitelist the Facebook Servers for Network Requests. More information on this can be found here.
Specifically look at steps #2 & #3.
From the documentation in Step #3 there were also changes to the canOpenURL method:
Why do I see console messages like 'canOpenURL: failed for URL: "fb...://' or ? This is an Xcode warning indicating the the canOpenURL: call returned false. As long as you have configured the LSApplicationQueriesSchemes entry in your plist as described above, you can ignore this warning
来源：https://stackoverflow.com/questions/32767882/open-this-page-in-null-modal-appearing-from-facebooksdk-login-after-ios9-and