iPhone 获取 UITextField 的父视图

如何通过 iPhone 获取 UITextField 的父视图

swift
let textField = UITextField(frame: CGRect(x: 50, y: 100, width: 200, height: 40))
textField.placeholder = "请输入文本"
self.view.addSubview(textField)

swift
if let superview = textField.superview {
    // 在这里可以对父视图进行进一步的操作
    print("父视图：", superview)
}

swift
import UIKit
class ViewController: UIViewController {
    override func viewDidLoad() {
        super.viewDidLoad()
        
        let textField = UITextField(frame: CGRect(x: 50, y: 100, width: 200, height: 40))
        textField.placeholder = "请输入文本"
        self.view.addSubview(textField)
        
        if let superview = textField.superview {
            print("父视图：", superview)
        }
    }
}