canOpenURL, problems adding site to whitelist

问题

I am currently updating an app and using Xcode 7.3. The app utilizes iAd banner ads and Flurry interstitial ads. When the iAd banner goes to load I get the error.

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

The banner loads just fine, and everything works as planned.

In researching this I found the method was deprecated for privacy reasons. However, I can not even find it in any of my files. Also, I have read about adding sites to a whitelist with LSApplicaitonQueriesSchemes. I did this in my plist with the following strings in the array;

about:blank
about
blank

The error then reads;

-canOpenURL: failed for URL: "about:blank" - error: "(null)"

I can't seem to get rid of the error no matter what I do. Does anyone have any ideas of what to do? I see a lot of info for urls that go to social media apps and such, but not for the about:blank url. Thanks in advance.

回答1:

1. You only need to whitelist about since that is the scheme being accessed.
2. The message -canOpenURL: failed for URL: "about:blank" - error: "(null)" means you have everything working. iOS logs that informational message when an app tries to call canOpenURL: for a whitelisted scheme but there is no app installed that supports the given scheme. It's a confusing debug message from iOS that can be safely ignored.

来源：https://stackoverflow.com/questions/36665446/canopenurl-problems-adding-site-to-whitelist