如何水平设置pickerview

Question

UIPickerView的默认滚动设置设置为垂直。是否可以在swift中水平地实现UIPickerView (包含数组的选取器视图也必须更改为水平)

不使用任何第三方文件

如果是这样的话，你能给我看看下面的示例代码吗？

self.rangePickerView.hidden = false
self.rangePickerView.dataSource = self
self.rangePickerView.delegate = self

rangePickerView.clipsToBounds = false        
rangePickerView.layer.borderWidth = 0        
rangePickerView.dataSource = self
rangePickerView.delegate = self

self.rangePickerView.frame = CGRectMake(screenSize.width * 0.06,screenSize.height *
            0.02,screenSize.width * 0.89,screenSize.height*0.46)
self.rangePickerView.transform = CGAffineTransformRotate(self.rangePickerView.transform, CGFloat(-M_PI_2))

self.view.addSubview(rangePickerView)        


//delegate methods//////

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

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

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

func pickerView(pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int)
{
    print("Your favorite city is \(titles[row] )")
    rangePickerView.hidden = false
}

func pickerView(pickerView: UIPickerView, widthForComponent component: Int) -> CGFloat 
{
    return 200  
}

func pickerView(pickerView: UIPickerView, rowHeightForComponent component: Int) -> CGFloat 
{
    return 50
}

Answer 1

在标准的UIPickerView https://developer.apple.com/library/ios/documentation/UserExperience/Conceptual/UIKitUICatalog/UIPickerView.html#//apple_ref/doc/uid/TP40012857-UIPickerView中，没有办法改变这种行为

Answer 2

请参阅此链接，了解如何在没有第三方文件的情况下通过转换选取器视图来执行此操作- http://torishere.github.io/swift/2015/02/12/horizontal-uipickerview.html否则，请使用AKPickerview进行水平选择，并使用tag属性来区分您想要的两个AKPickerviews。例如，在pickerView(titleForItem)中，检查pickerView.tag == 0或tag == 1，并为标题返回不同的字符串。