Making a drop down list using swift

Question

What is the library to make drop down menu in swift  I am new to Xcode and the Swift language  so can anyone please direct me on how to implement the drop down list in swift

User · Answer

Unfortunately if you re looking to apply UIPopoverController in iOS9  you ll get a deprecated class warning  Instead you need to set your desired view s  UIModalPresentationPopover property to achieve the same result      Popover      In a horizontally regular environment  a presentation style   where the content is displayed in a popover view  The background   content is dimmed and taps outside the popover cause the popover to be   dismissed  If you do not want taps to dismiss the popover  you can   assign one or more views to the passthroughViews property of the   associated UIPopoverPresentationController object  which you can get   from the popoverPresentationController property       In a horizontally compact environment  this option behaves the same as   UIModalPresentationFullScreen       Available in iOS 8 0 and later    Reference  https   developer apple com documentation uikit uiviewcontroller 1621355-modalpresentationstyle

User · Answer

Swift 3  Add text box and uipickerview to the storyboard then add delegate and data source to uipickerview and add delegate to textbox  Follow video for assistance 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        public func numberOfComponents in pickerView  UIPickerView  - gt  Int          return 1            public func pickerView   pickerView  UIPickerView  numberOfRowsInComponent component  Int  - gt  Int           return list count            func pickerView   pickerView  UIPickerView  titleForRow row  Int  forComponent component  Int  - gt  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 don t want the users to se the keyboard type               textField endEditing true

User · Answer

A  drop down menu  is a web control   term  In iOS we don t have these  You might be better looking at UIPopoverController  Check out this tutorial for a bit of an insight to PopoverControllers  http   www raywenderlich com 29472 ipad-for-iphone-developers-101-in-ios-6-uipopovercontroller-tutorial

User · Answer

Using UIPickerview is the right way to go to implement it according to Apple s Human Interface Guidelines  If you select drop down in mobile safari it will show UIPickerview to let the use choose drop down items   Alternatively   you can use UIPopoverController till iOS 9 as its deprecated but its better to stick with UIModalPresentationPopover of view you want o show as well  you can use UIActionsheet to show the items but it s better to use UIAlertViewController and choose UIActionSheetstyle to show as the former is deprecated in latest versions

User · Answer

You have to be sure to use UIPickerViewDataSource and UIPickerViewDelegate protocols or it will throw an AppDelegate error as of swift 3  Also please take note of the change in syntax   func numberOfComponentsInPickerView pickerView  UIPickerView  - gt  Int   is now    public func numberOfComponents in pickerView  UIPickerView  - gt  Int   The following below worked for me   import UIkit  class ViewController  UIViewController  UIPickerViewDataSource  UIPickerViewDelegate         IBOutlet weak var textBox  UITextField       IBOutlet weak var dropDown  UIPickerView       var list     1    2    3        public func numberOfComponents in pickerView  UIPickerView  - gt  Int          return 1            public func pickerView   pickerView  UIPickerView  numberOfRowsInComponent component  Int  - gt  Int           return list count            func pickerView   pickerView  UIPickerView  titleForRow row  Int  forComponent component  Int  - gt  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 don t want the users to se the keyboard type               textField endEditing true

[ios] Making a drop down list using swift?

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