UIPickerView无法正确显示图像

Question

我正在使用图片实现自定义选择器视图。问题是，图像彼此重叠，如下所示：

这是在选择器视图中配置图像的代码：

func pickerView(pickerView: UIPickerView, viewForRow row: Int, forComponent component: Int, reusingView view: UIView!) -> UIView {
    let chosenImage: UIImageView = UIImageView(image: UIImage(named: iconArray[row]))
    NSLog("choosen image \(iconArray[row])")
    let workaroundImageView: UIImageView = UIImageView(frame: chosenImage.frame)
    workaroundImageView.backgroundColor = UIColor(patternImage: chosenImage.image!)
    return workaroundImageView
}

我错过了什么？有什么建议？

Answer 1

在UIPickerView的委托中使用rowHeightForComponent。

pickerView:rowHeightForComponent:

为组件提供所需的行高。

func pickerView(pickerView: UIPickerView!, rowHeightForComponent component: Int) -> CGFloat