[iOS] UITextField PlaceHolder

1. TextField 선언하기

private lazy var textView: UITextView = {
    let textView = UITextView()
    textView.delegate = self
    textView.textColor = .secondaryLabel
    textView.font = .systemFont(ofSize: 16.0, weight: .medium)
    textView.text = "" // PlaceHolder Text 입력
    return textView
}()

 

2. UITextViewDelegate - textViewDidBeginEditing 사용

extension ViewController: UITextViewDelegate{
    func textViewDidBeginEditing(_ textView: UITextView) {
    // TextColor가 secondaryLabel이 아닐 때 새로 입력
        guard textView.textColor == .secondaryLabel else {return}
        textView.text = nil
        textView.textColor = .label
    }
}