Question

我试图制作一个字符串变量if if statement并且我得到＆＃39;（）＆＃39;不能转换为＆＃39; BooleanType＆＃39; 这是代码

import UIKit

class ViewController: UIViewController {

    @IBOutlet weak var button: UIBarButtonItem!
    @IBOutlet weak var textView: UITextField!
    var git =  StringLiteralType()
    var num = Int()
    func go() {
        if git = "4" {
          button.enabled = true
        }
    }
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
        git = self.textView.text!
        button.enabled = false

    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

}

Answer 1

混淆分配运算符=与等于运算符==。

您需要等于运算符

if git == "4"

在变量上获取布尔类型错误

1 个答案: