问题
It appears that Apple have changed the behaviour when making a phone call via the URL Scheme. We currently use this code to initiate a phone call:
let url = NSURL(string: "tel://011111111111")
UIApplication.sharedApplication().openURL()
Prior to iOS 10.2, this immediately launched the dialler and placed the phone call. It appears that this has now changed, and the user receives a prompt to confirm to make the phone call. It appears tel:// is behaving more like telprompt://. This is despite the official Apple URL Scheme document (last updated 2015) mentioning that user interaction is not required if a tel:// URL is opened from a native app.
Does anyone know if (a) this is new, expected behaviour and/or (b) if there is another way around this to initiate a phone call, without prompting the user?
回答1:
Unfortunately the version 10.3 to restricted the direct calls phone and facetime.
Check yourself:
https://developer.apple.com/library/content/releasenotes/General/RN-iOSSDK-10.3/
https://support.apple.com/en-gb/HT207617
来源：https://stackoverflow.com/questions/43249526/ios-user-prompt-when-making-outgoing-call-via-url-scheme-10-2