xcode 8 convert project to swift 3 - DBAlertController errors

Question

I'm trying to convert an app built in swift 2.2 with xCode 7.4. I'm now using xCode 8.1 and have updated all pods to the latest versions. Next I converted all code to swift 3. All went well except I have 6 compiler errors for the DBAlertController framework.

On looking at the github page it looks like DBAlertController doesn't support swift 3. I'm very new to xCode/swift development so not sure what's happening here. I originally didn't set a version in my Podfile and it installed version 0.2.6. I set the version to 0.3.0 after seeing this on the github page but I still get the compiler errors and the error below on running pod install. My cocoapods version is 1.2.0.beta.1.

Any ideas on fixing or replacing greatly appreciated.

[!] There are duplicate dependencies on `DBAlertController` in `Podfile`:

- DBAlertController (~> 0.3.0)
- DBAlertController

score 0 · Answer 1 · edited May 23 '17 at 12:33

You can convert your code to Swift 2.3.

Also, instead of using DBAlertController, you can simply show alert yourself. In Swift 3.0, you can show alert as :

let alertController: UIAlertController = UIApplication.shared.keyWindow?.rootViewController?.present(alertController, animated: true, completion: nil)

Or you can do something like this :

let alertController = UIAlertController(title: "title", message: "message", preferredStyle: .Alert)
//...
var rootViewController = UIApplication.shared.keyWindow?.rootViewController
if let navigationController = rootViewController as? UINavigationController {
    rootViewController = navigationController.viewControllers.first
}
if let tabBarController = rootViewController as? UITabBarController {
    rootViewController = tabBarController.selectedViewController
}
rootViewController?.present(alertController, animated: true, completion: nil)

Look into this stackoverflow's post for details

xcode 8 convert project to swift 3 - DBAlertController errors

1 Answers1