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func pickerView(pickerView: UIPickerView,attributedtitleForRow row: Int,forComponent component: @R_@R_696_11241@_10185@ -> NSAttributedString? { var attributedString: NSAttributedString! if component == 0 { attributedString = NSAttributedString(String: a.text!,attributes: [NSForegroundColorAttributename : UIColor.redColor()]) } if component == 1 { attributedString = NSAttributedString(String: b.text!,attributes: [NSForegroundColorAttributename : UIColor.redColor()]) } if component == 2 { attributedString = NSAttributedString(String: c.text!,attributes: [NSForegroundColorAttributename : UIColor.redColor()]) } return attributedString } func pickerView(pickerView: UIPickerView,didSELEctRow row: Int,inComponent component: @R_@R_696_11241@_10185@{ switch component { case 0: aOutput.text = a[row] --> **Code breaks** case 1: bOutput.text = b[row] case 2: cOutput.text = c[row] default: 10 }
func pickerView(pickerView: UIPickerView,forComponent component: @R_@R_696_11241@_10185@ -> NSAttributedString? { let attributedString = NSAttributedString(String: "some String",attributes: [NSForegroundColorAttributename : UIColor.redColor()]) return attributedString }
更新
如果要在多个if或switch语句中使用attributedString,以下UIViewController子类示例将帮助您：
import UIKit class ViewController: UIViewController,UIPickerViewDelegate,UIPickerViewDatasource { @IBOutlet weak var picker: UIPickerView! let arrayOne = ["One","Two","Three","Four","Five","Six"] let arrayTwo = ["Un","Deux","Trois","Quatre","Cinq","Six"] let arrayThree = [1,2,3,4,5,6] override func viewDidLoad() { super.viewDidLoad() picker.delegate = self picker.datasource = self } func numberOfComponentsInPickerView(_: UIPickerView) -> Int { return 3 } func pickerView(_: UIPickerView,numberOfRowsInComponent component: @R_@R_696_11241@_10185@ -> Int { switch component { case 0: return arrayOne.count case 1: return arrayTwo.count case 2: return arrayThree.count default: return NsnotFound } } func pickerView(pickerView: UIPickerView,forComponent component: @R_@R_696_11241@_10185@ -> NSAttributedString? { var attributedString: NSAttributedString! switch component { case 0: attributedString = NSAttributedString(String: arrayOne[row],attributes: [NSForegroundColorAttributename : UIColor.redColor()]) case 1: attributedString = NSAttributedString(String: arrayTwo[row],attributes: [NSForegroundColorAttributename : UIColor.redColor()]) case 2: attributedString = NSAttributedString(String: toString(arrayThree[row]),attributes: [NSForegroundColorAttributename : UIColor.redColor()]) default: attributedString = nil } return attributedString } func pickerView(_: UIPickerView,inComponent component: @R_@R_696_11241@_10185@ { switch component { case 0: println(arrayOne[row]) case 1: println(arrayTwo[row]) case 2: println(arrayThree[row]) default: break } } }
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