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In iOS 9 or later my app first open another app, it'll tell me 'xx wants to open xx'.when i click cancel i cannot find where is the action call back. who can help me.

MarcosMang
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  • What.. The signature on iOS 10+ is `func open(_ url: URL, options: [String : Any], completionHandler completion: (Bool) -> Void)` which has a completion block.. if the system fails to open the app/url, the completion block is called with `false`.. on iOS 9, it is `func openURL(_ url: URL) -> Bool` and it's synchronous. It will `return false` on failure.. – Brandon Dec 26 '17 at 04:46
  • but i used other sdk, i did not use openURL or other openURL related method – MarcosMang Dec 27 '17 at 03:11

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