文字列の文字列内の文字列を検索する

Question

私は配列またはデータベースからすべての情報を作成し、個々の小さな文字列を含む大きな文字列に設定しました。私は本質的にそれを検証し、文字列が文字列の中にある場合、アラートをポップアップするというステートメントを作成したいと思います。私はちょうどそのように正しいステートメントを作成するように見えることはできません。以下

大きな文字列を作成し、配列の私の創造

// 
// ViewController.swift 
// WagerMe 
// 
// Created by Christopher calvert on 3/1/17. 
// Copyright © 2017 Christopher calvert. All rights reserved. 
// CODED BY CHRIS CALVERT 

import UIKit 

class ViewController: UIViewController { 


    var userInfo = [[String]]() 



    @IBOutlet weak var fullname: UITextField! 
    @IBOutlet weak var userAge: UITextField! 
    @IBOutlet weak var userUsername: UITextField! 
    @IBOutlet weak var userEmail: UITextField! 
    @IBOutlet weak var userPassword: UITextField! 

    @IBAction func register(_ sender: Any) { 
     let stuff = userInfo 

     if(fullname.text!.isEmpty || userAge.text!.isEmpty || userUsername.text!.isEmpty || userEmail.text!.isEmpty || userPassword.text!.isEmpty) { 

      let myAlert = UIAlertController(title: "Alert", message: "All fields are required to register.", preferredStyle: UIAlertControllerStyle.alert); 
      let okAction = UIAlertAction(title: "OK", style: UIAlertActionStyle.default, handler:nil) 
      myAlert.addAction(okAction); 
      self.present(myAlert, animated: true, completion: nil) 

      return; 
     } 

     func validateAlpha(field: [String]) -> Bool { 
      let alphanumericChars = NSCharacterSet(charactersIn: "!@#$%^&*()-_=+1234567890.,") 

      var result = false 
      for x in field { 
       if (x.rangeOfCharacter(from: alphanumericChars as CharacterSet) != nil) { 
        result = true 
       } 
       else { 
        result = false 
       } 
      } 
      return result 
     } 

     func validateAge(field: [String]) -> Bool { 
      let alphanumericChars = NSCharacterSet(charactersIn: "!@#$%^&*()-_=+.,abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ") 

      var result = false 
      for x in field { 
       if (x.rangeOfCharacter(from: alphanumericChars as CharacterSet) != nil) { 
        result = true 
       } 
       else { 
        result = false 
       } 
      } 
      return result 
     } 

     func validateEmail(field: [String]) -> Bool { 
      let alphanumericChars = NSCharacterSet(charactersIn: "!#$%^&*()-_=+,") 

      var result = false 
      for x in field { 
       if (x.rangeOfCharacter(from: alphanumericChars as CharacterSet) != nil) { 
        result = true 
       } 
       else { 
        result = false 
       } 
      } 
      return result 
     } 

     func validate(field: [String]) -> Bool { 
      let alphanumericChars = NSCharacterSet(charactersIn: "!@#$%^&*()-_=+") 

      var result = false 

      for x in field { 
       if (x.rangeOfCharacter(from: alphanumericChars as CharacterSet) != nil) { 
        result = true 
       } 
       else { 
        result = false 
       } 
      } 
      return result 
     } 



     if validateAlpha(field: [fullname.text!]) { 
      let validateName = UIAlertController(title: "Alert", message: "You have entered invalid characters in the 'Name' field", preferredStyle: UIAlertControllerStyle.alert) 

      validateName.addAction(UIAlertAction(title: "Ok", style: UIAlertActionStyle.default, handler: nil)) 

      self.present(validateName, animated: true, completion: nil) 

     } else if validateAge(field: [userAge.text!]) { 
      let validateAge = UIAlertController(title: "Alert", message: "You have entered non-numbers in the 'Age' field", preferredStyle: UIAlertControllerStyle.alert) 

      validateAge.addAction(UIAlertAction(title: "Ok", style: UIAlertActionStyle.default, handler: nil)) 

      self.present(validateAge, animated: true, completion: nil) 



     } else if validate(field: [userUsername.text!]) { 
      let validateUsername = UIAlertController(title: "Alert", message: "You have entered invalid characters in the 'Username' field", preferredStyle: UIAlertControllerStyle.alert) 

      validateUsername.addAction(UIAlertAction(title: "Ok", style: UIAlertActionStyle.default, handler: nil)) 

      self.present(validateUsername, animated: true, completion: nil) 
     } else if validateEmail(field: [userEmail.text!]) { 
      let validateEmail = UIAlertController(title: "Alert", message: "You have entered invalid characters in the 'Email' field", preferredStyle: UIAlertControllerStyle.alert) 

      validateEmail.addAction(UIAlertAction(title: "Ok", style: UIAlertActionStyle.default, handler: nil)) 

      self.present(validateEmail, animated: true, completion: nil) 
     } else if validate(field: [userPassword.text!]) { 
      let validatePassword = UIAlertController(title: "Alert", message: "You have entered invalid characters in your password.", preferredStyle: UIAlertControllerStyle.alert) 

      validatePassword.addAction(UIAlertAction(title: "Ok", style: UIAlertActionStyle.default, handler: nil)) 

      self.present(validatePassword, animated: true, completion: nil) 
     } else if (fullname.text?.characters.count)! > 31 { 
      let nameTooLong = UIAlertController(title: "Alert", message: "Your name must be less than 30 characters.", preferredStyle: UIAlertControllerStyle.alert) 

      nameTooLong.addAction(UIAlertAction(title: "Ok", style: UIAlertActionStyle.default, handler: nil)) 

      self.present(nameTooLong, animated: true, completion: nil) 
     } else if (fullname.text?.characters.count)! < 5 { 
      let nameTooShort = UIAlertController(title: "Alert", message: "Your name must be greater than 4 characters.", preferredStyle: UIAlertControllerStyle.alert) 

      nameTooShort.addAction(UIAlertAction(title: "Ok", style: UIAlertActionStyle.default, handler: nil)) 

      self.present(nameTooShort, animated: true, completion: nil) 
     } else if (userPassword.text?.characters.count)! < 5 { 
      let passwordTooShort = UIAlertController(title: "Alert", message: "Your password must be greater than 4 characters.", preferredStyle: UIAlertControllerStyle.alert) 

      passwordTooShort.addAction(UIAlertAction(title: "Ok", style: UIAlertActionStyle.default, handler: nil)) 

      self.present(passwordTooShort, animated: true, completion: nil) 
     } else if (userPassword.text?.characters.count)! > 19 { 
      let passwordTooLong = UIAlertController(title: "Alert", message: "Your password must be less than 18 characters.", preferredStyle: UIAlertControllerStyle.alert) 

      passwordTooLong.addAction(UIAlertAction(title: "Ok", style: UIAlertActionStyle.default, handler: nil)) 

      self.present(passwordTooLong, animated: true, completion: nil) 
     } else if (userAge.text?.characters.count)! < 2 { 
      let passwordTooLong = UIAlertController(title: "Alert", message: "Sorry! You're not old enough to register for WagerMe.", preferredStyle: UIAlertControllerStyle.alert) 

      passwordTooLong.addAction(UIAlertAction(title: "Ok", style: UIAlertActionStyle.default, handler: nil)) 

      self.present(passwordTooLong, animated: true, completion: nil) 
     } else if (userUsername.text?.characters.count)! > 21 { 
      let usernameTooLong = UIAlertController(title: "Alert", message: "Your username must be less than 20 characters.", preferredStyle: UIAlertControllerStyle.alert) 

      usernameTooLong.addAction(UIAlertAction(title: "Ok", style: UIAlertActionStyle.default, handler: nil)) 

      self.present(usernameTooLong, animated: true, completion: nil) 
     } else if (userUsername.text?.characters.count)! < 5 { 
      let usernameTooShort = UIAlertController(title: "Alert", message: "Your username must be greater than 4 characters.", preferredStyle: UIAlertControllerStyle.alert) 

      usernameTooShort.addAction(UIAlertAction(title: "Ok", style: UIAlertActionStyle.default, handler: nil)) 

      self.present(usernameTooShort, animated: true, completion: nil) 

     } else { 




      let request = NSMutableURLRequest(url: NSURL(string: "http://cgi.soic.indiana.edu/~team10/store.php")! as URL) 
      request.httpMethod = "POST" 

      let postString = "a=\(fullname.text!)&b=\(userAge.text!)&c=\(userUsername.text!)&d=\(userEmail.text!)&e=\(userPassword.text!)" 

      request.httpBody = postString.data(using: String.Encoding.utf8) 

      let task = URLSession.shared.dataTask(with: request as URLRequest) { 
       data, response, error in 

       if error != nil { 
        print("error=\(String(describing: error))") 
        return 
       } 

       print("response = \(String(describing: response))") 

       let responseString = NSString(data: data!, encoding: String.Encoding.utf8.rawValue) 
       print("responseString = \(String(describing: responseString))") 
      } 

      task.resume() 
     } 
     //Alert for successful registration 

     let alertController = UIAlertController(title: "User", message: "User successfully registered!", preferredStyle: UIAlertControllerStyle.alert) 
     alertController.addAction(UIAlertAction(title: "OK", style: UIAlertActionStyle.default, handler: nil)) 

     self.present(alertController, animated: true, completion: nil) 

     fullname.text = "" 
     userAge.text = "" 
     userEmail.text = "" 
     userUsername.text = "" 
     userPassword.text = "" 


    } 

    override func viewDidLoad() { 
     super.viewDidLoad() 

     let url = URL(string:"http://cgi.soic.indiana.edu/~team10/pullUsers.php") 
     do { 
      let userdata = try Data(contentsOf: url!) 

      let users = try JSONSerialization.jsonObject(with: userdata, options: JSONSerialization.ReadingOptions.allowFragments) as! [String:AnyObject] 
      if let jsonarray = users["users"] as? NSArray{ 
       for index in 0...jsonarray.count-1{ 
        var array = [String]() 
        let object = jsonarray[index] as! [String : AnyObject] 
        let username = object["username"] as! String 
        let email = object["email"] as! String 


        array.append(username) 
        array.append(email) 
        userInfo.append(array) 
       } 


      } 
     } 
     catch{ 
     } 
     print(userInfo) 

     //Looks for single or multiple taps. 
     let tap: UITapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(LoginViewController.dismissKeyboard)) 

     //Uncomment the line below if you want the tap not not interfere and cancel other interactions. 
     //tap.cancelsTouchesInView = false 

     view.addGestureRecognizer(tap) 
     // Do any additional setup after loading the view, typically from a nib. 
    } 

    override func didReceiveMemoryWarning() { 
     super.didReceiveMemoryWarning() 
     // Dispose of any resources that can be recreated. 
    } 
    //Calls this function when the tap is recognized. 
    func dismissKeyboard() { 
     //Causes the view (or one of its embedded text fields) to resign the first responder status. 
     view.endEditing(true) 
    } 



} 

のUserInfo

という名前の文字列の文字列に設定すると、コードの調査の後のviewDidLoadで

Answer 1

を開始している私のコードですユーザーを表すstructを作成することをお勧めします。

それが理由から受信された応答である：ある

http://cgi.soic.indiana.edu/~team10/pullUsers.php 

：

{ "ユーザ"：[{ "ユーザ名"： "sspoulos"、 "メール"： "sspoulos@yahoo.com"}、{"username"： "ctcalver"、 "email"： "ctcalver@indiana.edu"}、{"username"： "zjhabib"、 "email"： "zjhabib@indiana.edu "" username "：" aukmoore@indiana.edu "}、{" username "："テスター "、" email "："テスター "}、{" username "：" austin " "、" email "：" email "}、{" username "：" zane "、" email "：" zane "}、{" username "：" kbryant "、" email "：" kbryant@indiana.edu "} 、{"username"： "rartest"、 "emai "" username "：" assman "、" email "：" assman@yahoo.com "}、{" username "：" tromo "、" email "：" tromo @ {"username"： "steventest"、 "email"： "steventest"}、{"username"}、{"username"： "emanning"、 "email"： "emanning@indiana.edu" ： "hsimpson"、 "email"： "hsimpson@indiana.edu"}、{"username"： "pgriffin"、 "email"： "pgriffin@indiana.edu"}、{"username"： "abelinc"メール "：" abelinc@indiana.edu "}、{" ユーザ名 "：" akmoore」、 "電子メール"： "akmoore20@indiana.edu"}]}

例：

struct User { 
    let username: String 
    let email: String 
} 

その後、巨大な文字列の代わりにUser配列を作成します。そうすれば、あなたが望むやり方で、そして明確な構文で、データのバリデーション、フィルタリングを行う機会が与えられます。検証の

例ユーザーは、アレイ内にある場合：

let users = [User(name: "sspoulos", email: "sspoulos@yahoo.com"),User(name: "ctcalver", email: "ctcalver@indiana.edu"),User(name: "zjhabib", email: "zjhabib@indiana.edu"),User(name: "aukmoore", email: "aukmoore@indiana.edu")] 


let result = users.contains{$0.name == "sspoulos"} 

この方法では、ユーザーがアレイ状にし、アラートを表示しない場合は提示されているかどうかを知るになるだろう。