如何在Swift 4中创建文本字段填充? [英] How do you create textfield padding in Swift 4?

问题描述

我有一个名为

nameTextField

我用

nameTexfield.layer.cornerRadius = 5

现在，文本字段中的文本正在触摸左侧.我想在文本和边框之间创建填充.我发现的每个帖子都使用cgRect，但是Swift不再支持该功能.如果可以解决，请提供正确的代码，如果可以，请解释答案.感谢您的帮助！我还需要知道如果有的话将代码放在哪里.

Now, the text within the textfield is touching the left side. I want to create padding between the text and border. Every post I find uses cgRect, but Swift no longer supports that. Please provide the correct code if you can figure it out and please explain the answer if you can. I appreciate the help! I also need to know where to put the code if there is any.

推荐答案

正如@ the4kman所说，Swift 确实支持CGRect，但是语法可能已更改.

As @the4kman says, Swift does support CGRect but the syntax may have changed.

您可以尝试以下操作:

@IBOutlet weak var nameTextField: UITextField! {
    didSet {
        nameTextField.layer.cornerRadius =  5
        nameTextField.layer.borderColor = UIColor.black.cgColor
        nameTextField.layer.borderWidth = 1
        let leftView = UIView(frame: CGRect(x: 0.0, y: 0.0, width: 100.0, height: 2.0))
        nameTextField.leftView = leftView
        nameTextField.leftViewMode = .always
    }
}

如果我这样做，我会得到很好的结果

If I do that, I get this fine result

希望有帮助.

您要求的是功能而不是在didSet中进行设置，请确保这是可能的，例如:

You ask for a function instead of setting it in didSet and sure, thats possible, something like:

func addPaddingAndBorder(to textfield: UITextField) {
    textfield.layer.cornerRadius =  5
    textfield.layer.borderColor = UIColor.black.cgColor
    textfield.layer.borderWidth = 1
    let leftView = UIView(frame: CGRect(x: 0.0, y: 0.0, width: 100.0, height: 2.0))
    textfield.leftView = leftView
    textfield.leftViewMode = .always
}

，然后在viewDidLoad中调用它，例如:

and then you' call that in viewDidLoad for instance like so:

override func viewDidLoad() {
    super.viewDidLoad()
    addPaddingAndBorder(to: nameTextField)
}

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