如何使用SWIFT 3來實現iOS中的下拉菜單圖如下圖所示: 如何使一個下拉菜單中的斯威夫特3
我尋覓SO問題,但他們更喜歡利用UIPicker的但我希望實現這一目標。是否可以通過使用表視圖來實現這種類型?
這給我需要從下拉菜單中選擇日期:
如何顯示在表視圖的日期,如下圖所示?
如何使用SWIFT 3來實現iOS中的下拉菜單圖如下圖所示: 如何使一個下拉菜單中的斯威夫特3
我尋覓SO問題,但他們更喜歡利用UIPicker的但我希望實現這一目標。是否可以通過使用表視圖來實現這種類型?
這給我需要從下拉菜單中選擇日期:
如何顯示在表視圖的日期,如下圖所示?
有一堆Demo和DropDown示例,當用戶單擊按鈕時,可以通過使用tableView只是tableview來實現此目的。 或者您可以使用此 https://cocoapods.org/pods/DropDown
let dropDown = DropDown()
// The view to which the drop down will appear on
dropDown.anchorView = view // UIView or UIBarButtonItem
// The list of items to display. Can be changed dynamically
dropDown.dataSource = ["Car", "Motorcycle", "Truck"]
Optional properties:
// Action triggered on selection
dropDown.selectionAction = { [unowned self] (index: Int, item: String) in
print("Selected item: \(item) at index: \(index)")
}
// Will set a custom width instead of the anchor view width
dropDownLeft.width = 200
Display actions:
dropDown.show()
dropDown.hide()
(SWIFT 3)添加文本框和uipickerview故事板再加入委託和數據源uipickerview並添加委託給文本框。按照視頻尋求幫助 https://youtu.be/SfjZwgxlwcc
import UIKit
class ViewController: UIViewController, UIPickerViewDelegate, UIPickerViewDataSource, UITextFieldDelegate {
@IBOutlet weak var textBox: UITextField!
@IBOutlet weak var dropDown: UIPickerView!
var list = ["1", "2", "3"]
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
public func numberOfComponents(in pickerView: UIPickerView) -> Int{
return 1
}
public func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int{
return list.count
}
func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
self.view.endEditing(true)
return list[row]
}
func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
self.textBox.text = self.list[row]
self.dropDown.isHidden = true
}
func textFieldDidBeginEditing(_ textField: UITextField) {
if textField == self.textBox {
self.dropDown.isHidden = false
//if you dont want the users to se the keyboard type:
textField.endEditing(true)
}
}
}
您可以使用表創建下拉菜單。你可以找到很多Dropdown的演示。但我也會建議使用Picker來選擇日期而不是表格。 – Surjeet