我发现了一些类似的问题,但没有一个解决方案符合我的情况,而且大部分都是客观的,我不知道.
我正在尝试用分钟和秒创建一个计时器,但我无法弄清楚如何连接我的第二个组件.
如何使用UIPickerView设置第二个组件？
这是我到目前为止：
TimeViewController.swift
class TimeViewController: UIViewController,UIPickerViewDelegate {
@IBOutlet weak var timeSegueLabel: UILabel!
let minutes = Array(0...9)
let seconds = Array(0...59)
func numberOfComponentsInPickerView(pickerView: UIPickerView) -> Int {
return 2
}
func pickerView(pickerView: UIPickerView,numberOfRowsInComponent component: Int) -> Int {
return minutes.count
}
func pickerView(pickerView: UIPickerView,titleForRow row: Int,forComponent component: Int) -> String! {
return String(minutes[row])
}
override func viewDidLoad() {
super.viewDidLoad()
}
}
感谢@Bluehound指出我正确的方向.我不得不在GitHub上查看一些
objective-c以确切知道如何做到这一点,这是我正在寻找的答案：
TimeViewController：
class TimeViewController: UIViewController,UIPickerViewDelegate {
@IBOutlet weak var timeSegueLabel: UILabel!
let minutes = Array(0...9)
let seconds = Array(0...59)
var recievedString: String = ""
func numberOfComponentsInPickerView(pickerView: UIPickerView) -> Int {
return 2
}
func pickerView(pickerView: UIPickerView,numberOfRowsInComponent component: Int) -> Int {
//row = [repeatPickerView selectedRowInComponent:0];
var row = pickerView.selectedRowInComponent(0)
println("this is the pickerView\(row)")
if component == 0 {
return minutes.count
}
else {
return seconds.count
}
}
func pickerView(pickerView: UIPickerView,forComponent component: Int) -> String! {
if component == 0 {
return String(minutes[row])
} else {
return String(seconds[row])
}
}
override func viewDidLoad() {
super.viewDidLoad()
timeSegueLabel.text = recievedString
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
这是结果：
