ios - 选择器 View 快速出错

Question

这个问题已经有答案了:

Type "myViewController" does not conform to protocol UIPIckerDataSource in Swift (5 个回答)

已关闭 6 年前。

我正在尝试更改选择器 View 的文本字体和颜色。但是当我这样做时出现错误，请帮忙。

func pickerView(pickerView: UIPickerView, attributedTitleForRow row: Int, forComponent component: Int) -> NSAttributedString? {
    let attributedString = NSAttributedString(string: "some string", attributes: [NSForegroundColorAttributeName : UIColor.red])
    return attributedString
}

Answer 1

我通过提供这样的 View 做了类似的事情

    func pickerView(_ pickerView: UIPickerView, viewForRow row: Int, forComponent component: Int, reusing view: UIView?) -> UIView {
          let pickerLabel = UILabel()
          pickerLabel.textColor = UIColor.black
          pickerLabel.text = "\(dataSource[row])"

          pickerLabel.font = UIFont(name: "OpenSans-Light", size: 70)
          pickerLabel.textAlignment = NSTextAlignment.center
          return pickerLabel
       }

func numberOfComponents(in pickerView: UIPickerView) -> Int {
      return 1
   }

   func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
      return dataSource.count
   }