ios - 想在 UIAlertController 或 UIPopoverController Swift 中显示 UIPickerView？

Question

我想在 UIAlertController 或 UIPopoverController 中显示 UIPickerView，我是 iOS 新手，请给我一些示例代码。

我搜索了它们，但找不到满意的答案。我不想在 UIActionSheet 上这样做，因为它在 iOS 9 中已被弃用。我也希望它在 Swift 中而不是在 Obj-C 中。我尝试了以下示例，但它对我不起作用。

http://makeapppie.com/2014/08/30/the-swift-swift-tutorials-adding-modal-views-and-popovers/

Answer 1

您的基本代码如下:

let alert = UIAlertController(title: title, message: message, preferredStyle: .actionSheet)
alert.isModalInPopover = true

//  Create a frame (placeholder/wrapper) for the picker and then create the picker
let pickerFrame = CGRect(x: 17, y: 52, width: 270, height: 100) // CGRectMake(left), top, width, height) - left and top are like margins
let picker = UIPickerView(frame: pickerFrame)

//  set the pickers datasource and delegate
picker.delegate = self
picker.dataSource = self

//  Add the picker to the alert controller
alert.view.addSubview(picker)

//Do stuff and action on appropriate object.

请查看以下答案。

Is there any way to add UIPickerView into UIAlertController (Alert or ActionSheet) in Swift?