I am in process of creating a currency converter app. The currency should be selected with a picker view, all the data is already inside. My picker view Font is currently black, but I want to have it white. How would I change the color of the font (not the background)?
func numberOfComponents(in pickerView: UIPickerView) -> Int
{
return 1
}
func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int
{
return pickerViewSource.count
}
func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String?
{
return pickerViewSource[row]
}
func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int
price_kind = pickerViewSource[row]
switch price_kind {
case "USD":
label.text = "$ " + price_kind
rate = 1.0
case "EUR":
label.text = "€ " + price_kind
rate = 0.9461
case "GBP":
label.text = "£ " + price_kind
rate = 0.8017
case "RUB":
label.text = "₽ " + price_kind
rate = 64.3435
case "CNY":
label.text = "¥ " + price_kind
rate = 6.9137
case "YEN":
label.text = "¥ " + price_kind
rate = 6.26
case "AUD":
label.text = "$ " + price_kind
rate = 1.3498
case "CAD":
label.text = "$ " + price_kind
rate = 1.3483
default:
label.text = "$ " + price_kind
rate = 1.0
}
To change the text inside the UIPickerView
use NSAttributedString :
func pickerView(_ pickerView: UIPickerView, attributedTitleForRow row: Int, forComponent component: Int) -> NSAttributedString? {
let str = pickerData[row]
return NSAttributedString(string: str, attributes: [NSForegroundColorAttributeName:UIColor.white])
}
You can use attributedTitleForRow and NSAttributedString
Please refer below code.
func pickerView(pickerView: UIPickerView, attributedTitleForRow row: Int, forComponent component: Int) -> NSAttributedString? {
let attributedString = NSAttributedString(string: "some string", attributes: [NSForegroundColorAttributeName : UIColor.redColor()])
return attributedString
}
If you want each row with different color, then use below code.
func pickerView(pickerView: UIPickerView, attributedTitleForRow row: Int, forComponent component: Int) -> NSAttributedString? {
var attributedString: NSAttributedString!
switch component {
case 0:
attributedString = NSAttributedString(string: "Zero", attributes: [NSForegroundColorAttributeName : UIColor.redColor()])
case 1:
attributedString = NSAttributedString(string: "One", attributes: [NSForegroundColorAttributeName : UIColor.redColor()])
case 2:
attributedString = NSAttributedString(string: "Two"), attributes: [NSForegroundColorAttributeName : UIColor.redColor()])
default:
attributedString = nil
}
return attributedString
}
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