An elegant selection list or dropdown menu for iOS with single or multiple selections

by iOS Example

RSSelectionMenu

An elegant selection list or dropdown menu for iOS with single or multiple selections.

Features

  • Single and Multiple selection.
  • Show menu with presentation styles like Present, Push, Popover, Formsheet, Alert, Actionsheet
  • Set UITableViewCell types like Basic, Subtitle, Right Detail
  • Set UITableViewCell selection style Tickmark or Checkbox
  • Search Items from the list
  • Works with Custom UITableViewCells
  • Works with Custom model classes and structs
  • Set Maximum selection limit
  • Provide Empty data set text
  • Provide header row as Empty, All, None or Custom Text
  • Customizable design for UINavigationBar and UISearchBar

Requirements

iOS 9.0+ | Xcode 8.3+ | Swift 3.0+

Installation

CocoaPods

pod 'RSSelectionMenu' or pod 'RSSelectionMenu', '~> 6.0.5'

Carthage

Carthage is a decentralized dependency manager that builds your dependencies and provides you with binary frameworks.

You can install Carthage with Homebrew using the following command:

$ brew update
$ brew install carthage

To integrate RSSelectionMenu into your Xcode project using Carthage, specify it in your Cartfile:

github "rushisangani/RSSelectionMenu" ~> 6.0

Then follow below steps:

  • Run carthage update to build the framework.
  • Set Framework search path in target build settings : Build Settings -> Framework Search Paths : $(PROJECT_DIR)/Carthage/Build/iOS
  • Add RSSelectionMenu.framework in Embedded Binaries.
  • Add RSSelectionMenu.framework in Linked Frameworks and Libraries.

Usage

Simple Selection List

let simpleDataArray = ["Sachin", "Rahul", "Saurav", "Virat", "Suresh", "Ravindra", "Chris"]
var simpleSelectedArray = [String]()

// Show menu with datasource array - Default SelectionStyle = single
// Here you'll get cell configuration where you'll get array item for each index
// Cell configuration following parameters.
// 1. UITableViewCell   2. Item of type T   3. IndexPath

let selectionMenu = RSSelectionMenu(dataSource: simpleDataArray) { (cell, item, indexPath) in
    cell.textLabel?.text = item
}

// set default selected items when menu present on screen.
// here you'll get handler each time you select a row
// 1. Selected Item  2. Index of Selected Item  3. Selected or Deselected  4. All Selected Items

selectionMenu.setSelectedItems(items: simpleSelectedArray) { [weak self] (item, index, isSelected, selectedItems) in

    // update your existing array with updated selected items, so when menu show menu next time, updated items will be default selected.
    self?.simpleSelectedArray = selectedItems
}

// show as PresentationStyle = push
selectionMenu.show(style: .push, from: self)

Multiple Selection List

let selectionMenu = RSSelectionMenu(selectionStyle: .multiple, dataSource: simpleDataArray) { (cell, name, indexPath) in

    cell.textLabel?.text = name

    // customization
    // set image
    cell.imageView?.image = #imageLiteral(resourceName: "profile")
    cell.tintColor = #colorLiteral(red: 0.2745098174, green: 0.4862745106, blue: 0.1411764771, alpha: 1)
}
  • Set Maximum selection limit (Optional)
selectionMenu.setSelectedItems(items: selectedDataArray, maxSelected: 3) { (item, selected, selectedItems) in
}
// or 
selectionMenu.maxSelectionLimit = 3

Cell Selection Style

selectionMenu.cellSelectionStyle = .tickmark
// or
selectionMenu.cellSelectionStyle = .checkbox

Presentation Style - Formsheet, Popover, Alert, Actionsheet

// show as formSheet
selectionMenu.show(style: .formSheet, from: self)


// show as popover
selectionMenu.show(style: .popover(sourceView: sourceView, size: nil), from: self) 

// or specify popover size
selectionMenu.show(style: .popover(sourceView: sender, size: CGSize(width: 200, height: 300)), from: self)


// show as alert
selectionMenu.show(style: .alert(title: "Select", action: nil, height: nil), from: self)

// or specify alert button title
selectionMenu.show(style: .alert(title: "Select", action: "Done", height: nil), from: self)


// show as actionsheet
selectionMenu.show(style: .actionSheet(title: nil, action: "Done", height: nil), from: self)

Auto Dismissal

Prevent auto dismissal for single selection

selectionMenu.dismissAutomatically = false

Event Handlers

On Dismiss

selectionMenu.onDismiss = { [weak self] selectedItems in
    self?.selectedDataArray = selectedItems
    
    // perform any operation once you get selected items
}

On WillAppear

selectionMenu.onWillAppear = {
    /// do something..
}

Customization

  • You'll get notified via handler, when user starts typing in searchbar.
// show searchbar
selectionMenu.showSearchBar { [weak self] (searchText) -> ([String]) in

  // return filtered array based on any condition
  // here let's return array where name starts with specified search text

  return self?.dataArray.filter({ $0.lowercased().hasPrefix(searchText.lowercased()) }) ?? []
}

Cell Style - Right Detail or Sub Title

let selectionMenu = RSSelectionMenu(selectionType: .single, dataSource: dataArray, cellType: .rightDetail) { (cell, item, indexPath) in

    // here you can set any text from object
    // let's set firstname in title and lastname as right detail

    let firstName = item(separatedBy: " ").first
    let lastName = item.components(separatedBy: " ").last

    cell.textLabel?.text = firstName
    cell.detailTextLabel?.text = lastName
}

selectionMenu.setSelectedItems(items: selectedDataArray) { [weak self] (item, selected, selectedItems) in
    self?.selectedDataArray = selectedItems
}

// show as default
selectionMenu.show(from: self)

Custom Cells

  • Provide custom cell with xib file name and cell identifier.
let cellNibName = "CustomTableViewCell"
let cellIdentifier = "cell"

// create menu with multi selection and custom cell

let selectionMenu =  RSSelectionMenu(selectionStyle: .multiple, dataSource: customDataArray, cellType: .custom(nibName: cellNibName, cellIdentifier: cellIdentifier)) { (cell, person, indexPath) in

    // cast cell to your custom cell type
    let customCell = cell as! CustomTableViewCell

    // here you'll get specified model object
    // set data based on your need
    customCell.setData(person)
}

Header Row - Empty, None, All, or Custom

// To show first row as Empty, when dropdown as no value selected by default
// add first row as empty -> Allow empty selection

let isEmpty = (selectedDataArray.count == 0)
selectionMenu.addFirstRowAs(rowType: .empty, showSelected: isEmpty) { (text, selected) in

    /// do some stuff...
    if selected {
        print("Empty Option Selected")
    }
}

Empty Data String

// show message 'No data found'
menu.showEmptyDataLabel()

// or
menu.showEmptyDataLabel(text: "No players found")

DataSource - Codable Objects, NSObject Subclasses or Dictionary Array

  • Implement UniquePropertyDelegate protocol to model class or structure.
class Person: NSObject, UniquePropertyDelegate {

    let id: Int
    let firstName: String
    let lastName: String

    init(id: Int, firstName: String, lastName: String) {
        self.id = id
        self.firstName = firstName
        self.lastName = lastName
    }

    // MARK: - UniquePropertyDelegate   
    // Here id has the unique value for each person

    func getUniquePropertyName() -> String {
        return "id"
    }
}

or

struct Employee: Codable, UniquePropertyDelegate {
    
    let empId: Int?
    let name: String?
    
    func getUniquePropertyName() -> String {
        return "empId"
    }
}

or

selectionMenu.uniquePropertyName = "empId" or "keyname of unique value in dictionary"

UI Customization

  • Set Title, BarButton Titles, TintColor, and Title Color
// set navigation bar title and attributes
selectionMenu.setNavigationBar(title: "Select Player", attributes: [NSAttributedString.Key.foregroundColor: UIColor.white], barTintColor: #colorLiteral(red: 0.1019607857, green: 0.2784313858, blue: 0.400000006, alpha: 1), tintColor: UIColor.white)

// right barbutton title - Default is 'Done'
selectionMenu.rightBarButtonTitle = "Submit"

// left barbutton title - Default is 'Cancel'
selectionMenu.leftBarButtonTitle = "Close"
  • Set Placeholder, Tint Color
// show searchbar with placeholder and barTintColor
selectionMenu.showSearchBar(withPlaceHolder: "Search Player", barTintColor: UIColor.lightGray.withAlphaComponent(0.2)) { [weak self] (searchText) -> ([String]) in

    return self?.dataArray.filter({ $0.lowercased().starts(with: searchText.lowercased()) }) ?? []
}

Example

See Example for more details.

GitHub