更改UIPicker顏色

Question

如何更改我的選擇器顏色？

我不希望更改字體或文本。我的選擇器正在填充並按照我想要的方式工作，我想要做的是將顏色從黑色更改爲我自定義的白色。

Answer 1

看看：http://makeapppie.com/tag/uipickerview-in-swift/

如果你想改變每個元素的您的標題顏色，你可以實現：

func pickerView(pickerView: UIPickerView, attributedTitleForRow row: Int, forComponent component: Int) -> NSAttributedString? { 
    let titleData = pickerData[row] 
    var myTitle = NSAttributedString(string: titleData, attributes: [NSFontAttributeName:UIFont(name: "Georgia", size: 15.0)!,NSForegroundColorAttributeName:UIColor.whiteColor()]) 
    return myTitle 
} 

斯威夫特3：

func pickerView(_ pickerView: UIPickerView, attributedTitleForRow row: Int, forComponent component: Int) -> NSAttributedString? { 
    let titleData = pickerData[row] 
    let myTitle = NSAttributedString(string: titleData!, attributes: [NSFontAttributeName:UIFont(name: "Georgia", size: 15.0)!,NSForegroundColorAttributeName:UIColor.white]) 
    return myTitle 
} 

Answer 2

如果您想要更多控制自定義拾取器中的每個元素...

使用UIPickerViewDelegate's「viewForRow」方法。

func pickerView(_ pickerView: UIPickerView, viewForRow row: Int, forComponent component: Int, reusing view: UIView?) -> UIView { 

    var label: UILabel 
    if let view = view as? UILabel { label = view } 
    else { label = UILabel() } 

    label.textColor = UIColor.blue 
    label.textAlignment = .center 
    label.font = UIFont(name: "My-Custom-Font", size: 20) // or UIFont.boldSystemFont(ofSize: 20) 
    label.adjustsFontSizeToFitWidth = true 
    label.minimumScaleFactor = 0.5 
    label.text = getTextForPicker(atRow: row) // implemented elsewhere 

    return label 
} 

很明顯，您要返回的視圖可能比UILabel更復雜。

Answer 3

雨燕4.0

func pickerView(_ pickerView: UIPickerView, attributedTitleForRow row: Int, forComponent component: Int) -> NSAttributedString? { 
    let titleData = arrayOfPickerData[row] 
    let myTitle = NSAttributedString(string: titleData, attributes: [NSAttributedStringKey.font:UIFont(name: "Georgia", size: 15.0)!,NSAttributedStringKey.foregroundColor:UIColor.white]) 
    return myTitle 
}