Popularity
8.8
Stable
Activity
1.9
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2,602
63
410

Code Quality Rank: L5
Programming language: Swift
License: MIT License
Tags: UI     Menu    
Latest version: v0.7

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README

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Pod Version License: MIT Language <!--Build Status-->

Introduction

The elegant yet functional dropdown menu, written in Swift, appears underneath the navigation bar to display a list of defined items when a user clicks on the navigation title.

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Installation

CocoaPods

BTNavigationDropdownMenu is available through CocoaPods. To install it, simply add the following line to your Podfile:

use_frameworks!
pod 'BTNavigationDropdownMenu'

Go ahead and import BTNavigationDropdownMenu into your own Swift files

import BTNavigationDropdownMenu

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 BTNavigationDropdownMenu into your Xcode project using Carthage, specify it in your Cartfile:

github "PhamBaTho/BTNavigationDropdownMenu" ~> 0.7

Run carthage update to build the framework and drag the built BTNavigationDropdownMenu.framework into your Xcode project.

Usage

Instantiate

Start by creating an Array that contains strings as elements of a dropdown list:

let items = ["Most Popular", "Latest", "Trending", "Nearest", "Top Picks"]

Create a new instance of BTNavigationDropdownMenu:

let menuView = BTNavigationDropdownMenu(navigationController: self.navigationController, containerView: self.navigationController!.view, title: BTTitle.title("Dropdown Menu"), items: items)

or like this:

let menuView = BTNavigationDropdownMenu(title: BTTitle.index(1), items: items)

BTTitle is an enum. We can set BTTitle.title(string) or BTTitle.index(Int) (Note: BTTitle.index is the index of defined items array).

By default, navigationController is the topmost navigation controller and containerView is keyWindow.

(keyWindow is recommended for containerView so that the black overlay can cover the whole screen. In some cases, keyWindow doesn't work properly, like using with side menu (e.g. SWRevealViewController), the dropdown menu doesn't move along with the parent view or navigation controller. To workaround this issue, you can use self.navigationController!.view.)

Set title of navigation bar as menuView:

self.navigationItem.titleView = menuView

Call BTNavigationDropdownMenu closure to get the index of selected cell:

menuView.didSelectItemAtIndexHandler = {[weak self] (indexPath: Int) -> () in
            print("Did select item at index: \(indexPath)")
            self.selectedCellLabel.text = items[indexPath]
}

menuView.show() or menuView.hide() to show or hide dropdown menu manually.

menuView.toggle() to toogle dropdown menu shown/hide.

menuView.isShown (Boolean type) property to check showing state of dropdown menu.

menuView.updateItems(items: [AnyObject]) to update items in dropdown menu.

Customization

First, assign the items and frame for the dropdown menu. Then, customize the look and feel of the menu by overriding these properties:

Name Description Default value
navigationBarTitleFont Navigation bar title font System font, bold, size 17
cellHeight Cell height 50
arrowImage Arrow next to the navigation title Provided image
arrowPadding Padding between the navigation title and arrow 15
cellBackgroundColor Cell background color UIColor.white
cellSeparatorColor Cell separator color UIColor.darkGray
cellTextLabelColor Text color inside of the cell UIColor.darkGray
cellTextLabelFont Text font inside the cell System font, bold, size 17
cellTextLabelAlignment Text alignment inside of the cell NSTextAlignment.left
cellSelectionColor Selected color of the cell UIColor.lightGray
checkMarkImage Checkmark icon for the cell Provided image
animationDuration Animation duration for showing/hiding of the menu 0.3
maskBackgroundColor Mask layer color UIColor.black
maskBackgroundOpacity Opacity of the mask layer 0.3
menuTitleColor Title color displayed in the menu UIColor.lightGray
shouldKeepSelectedCellColor Selected cell color visibility when menu is shown false
shouldChangeTitleText Ability to change the selected title text true
selectedCellTextLabelColor Selected cell text label color UIColor.darkGray
arrowTintColor Tint color of the arrow UIColor.white

Requirement

  • iOS 9.0+

Changelog

See the CHANGELOG for details

License

BTNavigationDropdownMenu is available under the MIT License. See the LICENSE for details.


*Note that all licence references and agreements mentioned in the BTNavigationDropdownMenu README section above are relevant to that project's source code only.