arrays - Swift，字符串检查

Question

我必须检查文本字段字符串中是否包含数组中的某些 [String]，但我只能检查文本字段是否与 [String] 相同。

var array = ["word1", "word2", "word3"]

if //textField.text contains some of the words in the array

{  //do something }

我最近开始学习swift，请帮助我。

Answer 1

这很简单。首先确保在您的 class ViewController: UIViewController{} 之前添加:

import Foundation

然后，您可以像这样找到常用词的数量:

var array = ["word1", "word2", "word3 and word 4"]
var count=0
var s=textField.text!
for item in array{
    if s.components(separatedBy: " ").contains(item){
         count+=1
    }
}
if count > 0{ // do something here
   print("There are \(count) in the text field from the array") 
}

如果数组包含带空格的元素，则执行如下操作:

var array = ["word1", "word2", "word3"]
var count=0
var s=textField.text!
for item in array{
    if s.contains(item){
         count+=1
    }
}
if count > 0{ // do something here
   print("There are \(count) in the text field from the array") 
}

说明:

如果找到一个词，变量count加1。之后，你检查count是否大于0，如果是，你做什么你想要那里。

---

最终代码如下所示:

import Foundation
import UIKit

class myClass: UIViewController{

    @IBOutlet weak var textField: UITextField!

    var array = ["word1", "word2", "word3"]
    var count=0
    @IBAction func buttonPressed(_ sender: UIButton){
         var s=textField.text!
         for item in array{
             if s.components(separatedBy: " ").contains(item){
                count+=1
            }
         }
        if count > 0{
            print("There are \(count) in the text field from the array")
        }
    }
}

希望对您有所帮助!