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iosswiftvaruiswitch

(Swift) How to use UISwitch to change var

I have a VPN app I am building, I also have my own DNS servers.

To specify what DNS I want to use I do it in the file VPNUK1.swift under let dns = "1.1.1.1,8.8.8.8"

I have made a settings page that uses SettingsView.swift

I have made a ViewController and added a UISwitch, I have then used @IBOutlet to link it to the SettingsView.swift

However I do not know how to get the UISwitch to change the let dns = "1.1.1.1,8.8.8.8" in VPNUK1.swift from SettingsView.swift

I would like, when the switch is toggled, have it changed to let dns = "185.136.234.36"

Solution

  • In settings view controller use a if / else ui switch to set UserDefaults.standard.set("1.1.1.1", forKey: "DNS")

    In the vpn view controller: "dns": UserDefaults.standard.string(forKey: "DNS")!