Adjust UIPickerView font size - ios

Question

I see many solutions out there for the UIPickerView font size, but it seems they are all based on text based arrays and / or require a UIViewController.
I am using an Int Array within a UITableViewCell and cannot seem to find something that will work with what I am trying to accomplish.
Here is the code:
import UIKit
class AirTemperatureTableViewCell: UITableViewCell, UIPickerViewDelegate, UIPickerViewDataSource
{
let numberOfComponents: Int = 2
let temperatureComponentRows: Int = 501
let temperatureSymbolComponentRows: Int = 2
let Fahrenheit: String = "F"
let Celsius: String = "C"
let minDegrees = -250
let maxDegrees = 250
private var degrees: Array<Int> = [Int]()
var temperature: Int = 30 // our default temperature
var temperatureType: String = "C" // our default type is Celsius
#IBOutlet var airTemperaturePicker: UIPickerView!
override func awakeFromNib()
{
super.awakeFromNib()
for i in self.minDegrees ..< self.maxDegrees+1
{
self.degrees.append(i)
}
self.airTemperaturePicker.selectRow(280, inComponent: 0, animated: true)
}
override func setSelected(selected: Bool, animated: Bool)
{
super.setSelected(selected, animated: animated)
}
func numberOfComponentsInPickerView(pickerView: UIPickerView) -> Int
{
return self.numberOfComponents
}
func pickerView(pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int
{
if component == 0
{
return self.temperatureComponentRows
}
else
{
return self.temperatureSymbolComponentRows
}
}
func pickerView(pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String?
{
//
// If we are component 0, the degrees, return the value for the given row.
//
if component == 0
{
return String(self.degrees[row])
}
else
{
if row == 0
{
return self.Celsius
}
else
{
return self.Fahrenheit
}
}
}
func pickerView(pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int)
{
}
}
any help would be appreciated.

Answer 1

You can use a UILabel with the viewForRow method of the UIPickerViewDataSource. You can then configure it with all the regular label options incl. setting font size, color, etc.:
// goes in lieu of titleForRow if customization is desired
func pickerView(pickerView: UIPickerView, viewForRow row: Int, forComponent component: Int, reusingView view: UIView?) -> UIView {
let pickerLabel = UILabel()
if component == 0 {
pickerLabel.textColor = .darkGrayColor()
pickerLabel.textAlignment = .Center
pickerLabel.text = String(self.degrees[row])
pickerLabel.font = UIFont(name:"Helvetica", size: 28)
} else {
pickerLabel.textColor = .redColor()
pickerLabel.textAlignment = .Center
pickerLabel.font = UIFont(name:"Helvetica", size: 28)
if row == 0 {
pickerLabel.text = self.Celsius
} else {
pickerLabel.text = self.Fahrenheit
}
}
return pickerLabel
}

Answer 2

You should use the UIPickerViewDelegate function viewForRow inside your UITableViewCell subclass like so:
func pickerView(pickerView: UIPickerView, viewForRow row: Int, forComponent component: Int, reusingView view: UIView?) -> UIView {
let view = UIView(frame: picker.frame)
let label = UILabel(frame: picker.frame)
label.textAlignment = .Center
label.text = String(degrees[row])
label.font = UIFont(name: "Arial", size: 15)
label.adjustsFontSizeToFitWidth = true
view.addSubview(label)
return view
}
picker is an #IBOutlet for your UIPickerView in your UITableView subclass set using either the prototype cell or external nib and control-drag. Also, make sure to set the picker's delegate and dataSource properties inside awakeFromNib.
override func awakeFromNib() {
super.awakeFromNib()
picker.dataSource = self
picker.delegate = self
//Your Code Below
}
This should make a cell width pickerView with a UILabel of your font choice.