ios - 如何从以编程方式添加的 UITextView 获取文本 [Swift]

Question

我使用以下代码添加文本字段，以将 3 个 UITextField 添加到 ViewController:

for var index = 0; index < 3; ++index {
    var textField = UITextField(frame: CGRectMake(0, 0, 300, 40))
    var pom:CGFloat = 130 + CGFloat(index*50)
    textField.center = CGPointMake(185, pom)
    textField.layer.borderWidth = 1.0;
    textField.layer.cornerRadius = 5.0;
    textField.textAlignment = NSTextAlignment.Center
    self.view.addSubview(textField)
}

现在我需要从所有文本字段中获取文本。谁能告诉我，我该怎么做？

Answer 1

您可以将它们存储在一个数组中，使用循环中计数器的值在每个数组上设置 tag 属性，然后稍后通过该标记检索它们:

class MyViewController: UIViewController {

    var textFields = [UITextField]()

    override func viewDidLoad() {
        super.viewDidLoad()

        for var index = 0; index < 3; ++index {
            var textField = UITextField(frame: CGRectMake(0, 0, 300, 40))
            var pom:CGFloat = 130 + CGFloat(index*50)
            textField.center = CGPointMake(185, pom)
            textField.layer.borderWidth = 1.0;
            textField.layer.cornerRadius = 5.0;
            textField.textAlignment = NSTextAlignment.Center
            textField.tag = index
            self.textFields.append( textField )
            self.view.addSubview(textField)
        }

        for var index = 0; index < 3; ++index {
            if let textField = self.textFieldForTag( index ) {
                print( textField.text )
            }
        }
    }

    func textFieldForTag( tag: Int ) -> UITextField? {
        return self.textFields.filter({ $0.tag == tag }).first
    }
}