ios - 按下按钮时添加多个文本字段

Question

我有一个按钮，可以动态地将 UITextField 添加到 xcode 中的 View 中。我想继续按下按钮以将尽可能多的文本字段添加到彼此下方的 View 中，但我不知道该怎么做

这是到目前为止我的代码:

@IBAction func buttonPressed(sender: AnyObject) {


    let sampleTextField = UITextField(frame: CGRectMake(20, 100, 300, 40))
    sampleTextField.placeholder = "Enter text here"
    sampleTextField.font = UIFont.systemFontOfSize(15)
    sampleTextField.borderStyle = UITextBorderStyle.RoundedRect
    sampleTextField.autocorrectionType = UITextAutocorrectionType.No
    sampleTextField.keyboardType = UIKeyboardType.Default
    sampleTextField.returnKeyType = UIReturnKeyType.Done
    sampleTextField.clearButtonMode = UITextFieldViewMode.WhileEditing;
    sampleTextField.contentVerticalAlignment = UIControlContentVerticalAlignment.Center
    sampleTextField.delegate = self
    self.view.addSubview(sampleTextField)
    print(sampleTextField.text!)

}

我知道这会添加一个文本字段，并且通过按下按钮，一个新的文本字段会重叠我想按下按钮并添加另一个

Answer 1

由于您想要下面的下一个文本字段，因此您需要修改函数中的 y 框架。

创建一个变量来保存 y 原点值并将其值添加到函数末尾。

var yValue = 100

@IBAction func buttonPressed(sender: AnyObject) {
    let sampleTextField = UITextField(frame: CGRectMake(20, yValue, 300, 40))
    sampleTextField.placeholder = "Enter text here"
    sampleTextField.font = UIFont.systemFontOfSize(15)
    sampleTextField.borderStyle = UITextBorderStyle.RoundedRect
    sampleTextField.autocorrectionType = UITextAutocorrectionType.No
    sampleTextField.keyboardType = UIKeyboardType.Default
    sampleTextField.returnKeyType = UIReturnKeyType.Done
    sampleTextField.clearButtonMode = UITextFieldViewMode.WhileEditing;
    sampleTextField.contentVerticalAlignment = UIControlContentVerticalAlignment.Center
    sampleTextField.delegate = self
    self.view.addSubview(sampleTextField)
    print(sampleTextField.text!)

    yValue += 50
}