命令由于信号失败：分段错误：11升级到Xcode 8和Swift 3后

Question

我已经看到了一些围绕着计算器但其中没有解决我的问题。我试过删除派生数据，重新输入函数，并做一个干净的。唯一可行的是注释代码，但我需要为我的应用程序的代码。没有发生错误，直到我更新到Xcode中8，我的代码，斯威夫特3

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!") 
        } 
       }) 
      } 
     }" 

全功能如下：

@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，尝试把teamItem.toDictionary as Any。