Swift UIPickerView:viewForRow未调用
我在设置UIPickerView时遇到问题。我已将其全部设置为教科书,我想更改字体大小,但是:Swift UIPickerView:viewForRow未调用,swift,uipickerview,Swift,Uipickerview,我在设置UIPickerView时遇到问题。我已将其全部设置为教科书,我想更改字体大小,但是: 通过AttributedTitleFrorrow更改字体大小没有效果(尽管更改颜色确实有效) viewForRow从未被调用。一点也不 我使用的是Xcode 8和Swift 2.3,目标是iOS8+。以下是所有相关的代码位: (IB)连接: @IBOutlet weak var synapse: UIPickerView! 链接到UIViewController的代理: override func
@IBOutlet weak var synapse: UIPickerView!
链接到UIViewController的代理:
override func viewDidLoad() {
super.viewDidLoad()
// Préparation des gestionnaires de transition vers les différentes vues
self.transitionManagerNav.sourceViewController = self
self.transitionManagerNav.ordre = "travailleini2barrenav"
self.transitionManagerDesk.sourceViewController = self
self.transitionManagerDesk.ordre = "travailleini2desk"
self.synapse.dataSource = self
self.synapse.delegate = self
dateEnCours = graphique.pointDeReference.dateComplete
}
代表执行:
// UIPICKERVIEWDELEGATE
func numberOfComponentsInPickerView(pickerView: UIPickerView) -> Int {
return 1
}
func pickerView(pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
return elementsDefileur.count
}
func pickerView(pickerView: UIPickerView, rowHeightForComponent component: Int) -> CGFloat {
return 17
}
func pickerView(pickerView: UIPickerView, widthForComponent component: Int) -> CGFloat {
return synapse.frame.width
}
func pickerView(pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
}
func pickerView(pickerView: UIPickerView, viewForRow row: Int, forComponent component: Int, reusing view: UIView?) -> UIView {
print("[viewForRow]") // THAT never happens (and yes, I am looking at the correct output window :o)
let pickerLabel = UILabel()
pickerLabel.textColor = UIColor.redColor()
pickerLabel.text = elementsDefileur[row]
pickerLabel.font = UIFont(name: "Arial-BoldMT", size: 5)
pickerLabel.textAlignment = NSTextAlignment.Left
return pickerLabel
}
我已经尝试了我所能想到的一切,包括从代码中删除并重新创建UIPickerView,然后从(IB)中删除并重新创建UIPickerView,将代理链接移动到ViewWillExeal中,titleForRow/attributedTitleForRow/viewForRow的每一个组合,清理项目,等等
如何解决此问题?委托函数声明中的属性名称错误。它应该是“重用视图”,而不是“重用视图”:
func pickerView(pickerView: UIPickerView, viewForRow row: Int, forComponent component: Int, reusingView view: UIView?) -> UIView
我相信苹果的文档包含了这个错误。我也遇到了同样的问题,并通过如上所述修复属性名来修复它。在类名之后是否包含UIPickerViewDeleteGate?(猜测名称,假设其正确。)例如类myViewController:UIViewController,UIPickerViewDeleteGate是的(很抱歉忘记了):类TravaileViewController:UIViewController,UIPickerViewDataSource,UIPickerViewDeleteGate{不,没问题。这是我最好的猜测,只要看一眼,大多数其他东西似乎都没问题。打印
elementsDefileur。数一数看看里面有多少东西。非常感谢,蒂姆,你救了我一天!(很抱歉反馈太晚)