One of the lessons on the road to LearnNewStuff was to allow the app to retrieve data from a website that didn’t have SSL (no “https://”, only “http://”) so the traffic between the app and the website isn’t encrypted. Xcode / iOS doesn’t like that – for good reason, but you may have just as good a reason to do it (in this case it’s just a lesson about retrieving web data and isn’t going to be used on a final app).
In order to allow the app to retrieve data from a website via non-encrypted means, we need to add that website to a key titled: “App Transport and Security Settings” – which is in that ever-elusive Info.plist file. As discussed before, enlightened modern thinking by Apple means that this file is no long present in modern versions of Xcode / iOS don’t, so we need to work our way around that.
The Solution
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Step 1
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Click your App name at the top level of the Project Navigator.
Step 2
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Click the ‘Signing & Capabilities’ tab.
Step 3
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Click the ‘+’ sign at the top-right of the window.
A ‘Capabilities’ window will display.
Step 4
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Double-click the ‘App Transport Security Exce…’ option from the list.
You will now see an ‘App Transport Security Exceptions’ box in the ‘Signing & Capabilities’ tab.
Step 5
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Click the ‘+’ symbol underneath where it says “Exception Domains”.
Step 6
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Double-click “New Exception Domain” and rename it to the domain of the website we wish to retrieve data from – in our case this was “numbersapi.com”.
(press ENTER when done)
Job Done!
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We now have an Info.plist file present, with the Exception Domain (in our case “numbersapi.com”) we require listed under “App Transport Security Settings”.