如何在 pickerview rowHeightForComponent 中获取行号？

Question

我有一个 pickerview，它可能具有不同的行高，具体取决于传递的数组中的文本：

func pickerView(_ pickerView: UIPickerView, viewForRow row: Int, forComponent component: Int, reusing view: UIView?) -> UIView {
    let label = UILabel(frame: CGRect(x: 0, y: 0, width: screenWidth, height: 44));
    label.lineBreakMode = .byWordWrapping;
    label.numberOfLines = 0;
    label.text = array[row]
    label.sizeToFit()

    return label;
}

func pickerView(_ pickerView: UIPickerView, rowHeightForComponent component: Int) -> CGFloat {
    // How to get the the row number of pickerview here?
    return 0
}

Answer 1

I have a pickerview that may have different height of the row depends on the text on passed array

不，您没有这样的选择器视图。选择器视图不能有可变的行高。你找不到方法的原因是没有这样的方法。

如何在 pickerview rowHeightForComponent 中获取行号？

How to get row number in pickerview rowHeightForComponent?

swift

swift3