Question

我有一个带有以下代码的工作uipickerview

class DateTableViewController: UITableViewController, UIPickerViewDelegate, UIPickerViewDataSource {

    var colors: [String] = ["red","green","blue"]

    override func viewDidLoad() {
        super.viewDidLoad()

        myPicker = UIPickerView()

        myPicker.dataSource = self
        myPicker.delegate = self

        self.view.userInteractionEnabled = true
        var myGR = UITapGestureRecognizer(target: self, action: "pickerTapped:")

        myPicker.addGestureRecognizer(myGR)
    }

    func numberOfComponentsInPickerView(pickerView: UIPickerView) -> Int {
            return 1
        }

    func pickerView(pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
            return colors.count
        }

    func pickerView(pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String! {
            return colors[row] as! String
        }

    func pickerTapped(sender : UIView) {
            println("Tap Gesture recognized")
        }

}

不幸的是，当我点击选择器查看项目时没有任何反应，有人可以帮我这个吗？

Answer 1

选择器视图已经处理'点击以选择'行为，允许您在PickerView委托协议中指定的DidSelectRow方法中实现选择逻辑。

取消手势识别器并用以下代码替换pickerTapped函数：

func pickerView(pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
    println("\(colors[row]) was selected")
}

您的点击手势识别器未触发的原因是Picker View已经处理了点击手势以管理选择，并且在进行选择时将通知其代表。您无需手动处理此选择。

UIPickerView点击手势不工作swift 1.2

1 个答案: