Question

我已经在堆栈溢出周围看到了一些，但没有一个能解决我的问题。我尝试删除派生数据，重新输入功能，然后进行清理。唯一有效的是注释掉代码，但我需要我的应用程序的代码。在我更新到Xcode 8并将我的代码更新为Swift 3之前，错误没有发生。

1.  While emitting IR SIL function @_TFFC13RLA_Volunteer8TeamsTVC18addBarButtonTappedFT6senderCSo15UIBarButtonItem_T_U0_FCSo13UIAlertActionT_ for expression at [/Volumes/.../Developer/RLA/RLA-Volunteer/RLA Volunteer/TeamsTVC.swift:91:89 - line:109:9] RangeText="{ (action) in
            if let team = alertController.textFields?[0].text {
                if team.characters.count == 0 {
                    let errorAlertController = UIAlertController(title: "Add a team", message: nil, preferredStyle: .alert)
                    self.present(errorAlertController, animated: true, completion: nil)
                    return
                }
                let teamItem = Team(teamName: team)
                let teamsRef = self.ref.child("teams")
                teamsRef.child(team.lowercased()).setValue(teamItem.toDictionary, withCompletionBlock: { (error, success) -> Void in
                    if error != nil {
                        print("Error: \(error!.localizedDescription)")
                    }
                    else {
                        print("Data saved!")
                    }
                })
            }
        }"

整个功能如下所示：

  @IBAction func addBarButtonTapped(sender: UIBarButtonItem) {
        // add teams to list
        let alertController = UIAlertController(title: "Add Team", message: nil, preferredStyle: .alert)
        alertController.addTextField { (textField) in
            textField.placeholder = "Team"
        }
        alertController.addAction(UIAlertAction(title: "Cancel", style: .cancel, handler: nil))
        alertController.addAction(UIAlertAction(title: "Add", style: .default, handler: { (action) in
            if let team = alertController.textFields?[0].text {
                if team.characters.count == 0 {
                    let errorAlertController = UIAlertController(title: "Add a team", message: nil, preferredStyle: .alert)
                    self.present(errorAlertController, animated: true, completion: nil)
                    return
                }
                let teamItem = Team(teamName: team)
                let teamsRef = self.ref.child("teams")
                teamsRef.child(team.lowercased()).setValue(teamItem.toDictionary, withCompletionBlock: { (error, success) -> Void in
                    if error != nil {
                        print("Error: \(error!.localizedDescription)")
                    }
                    else {
                        print("Data saved!")
                    }
                })
            }
        }))
        present(alertController, animated: true, completion: nil)
    }

Answer 1

对于teamItem.toDictionary，请尝试teamItem.toDictionary as Any。

由于信号命令失败：分段错误：升级到Xcode 8和Swift 3后11

1 个答案: