NotificationBanner

by Daltron

The easiest way to display highly customizable in app notification banners in iOS

3.9K Stars 468 Forks Last release: 8 months ago (3.0.4) MIT License 292 Commits 44 Releases

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Notification Banner

Version Platform Language: Swift License

Written in Swift 5

NotificationBanner is an extremely customizable and lightweight library that makes the task of displaying in app notification banners and drop down alerts an absolute breeze in iOS.

| Basic Banners | Banners with Side Views | Status Bar Banners | | ------------- | ------------- | ------------- | | Basic Banners | Banners with Side Views | Status Bar Banners |

| Growing Banners | Floating Banners | Stacked Banners | | ------------- | ------------- | ------------- | | Growing Banners | Floating Banners | Floating Banners |

Features

  • Highly customizable ✅
  • NSAttributedString
    support ✅
  • iPhone, iPhoneX, & iPad Support ✅
  • Orientation change support ✅
  • Custom
    UIView
    support ✅
  • Custom colors support ✅
  • Support for long titles/ subtitles ✅
    • NotificationBanner
      uses horizontal scrolling labels
    • GrowingNotificationBanner
      grows in height as needed
  • Presenting from top or bottom support ✅
  • Haptic feeback support ✅
  • Built in banner queue ✅
  • Allow to display several banners simultaneously, configurable in banners queue

Requirements

  • iOS 10.0+
  • Xcode 10.0+

Installation

CocoaPods

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

Swift 5 + xCode 11 + iOS 13 Support

pod 'NotificationBannerSwift', '~> 3.0.0'

Swift 5 + xCode 10.x

pod 'NotificationBannerSwift', '2.5.0'

Swift 4.2

pod 'NotificationBannerSwift', '2.0.1'

Swift 4.0

pod 'NotificationBannerSwift', '1.6.3'
pod 'MarqueeLabel/Swift', '3.1.6'

Then add

import NotificationBannerSwift
at the top of each file you use NotificationBanner in your project.

Carthage

To use NotificationBanner via Carthage simply add this line to your

Cartfile
:

Swift 5

github "Daltron/NotificationBanner" "master"

Then add

NotificationBanner.framework
and the dependencies
SnapKit.framework
and
MarqueeLabel.framework
in your project.

Usage

Creating drop down alerts with NotificationBanner is easy. To create a regular banner (with scrolling labels) and show it, simply:

let banner = NotificationBanner(title: title, subtitle: subtitle, style: .success)
banner.show()

If you want to create a banner which grows in height as needed and show it accordingly just use

GrowingNotificationBanner
instead of
NotificationBanner
:
let banner = GrowingNotificationBanner(title: title, subtitle: subtitle, style: .success)
banner.show()

To create a status bar alert, simply:

let banner = StatusBarNotificationBanner(title: title, style: .success)
banner.show()

By default, each banner will be displayed on the main application window. If you are wanting to show a banner below a navigation bar, simply show on the view controller that is within the navigation system:

banner.show(on: viewController)

By default, each banner will present from the top. If you are wanting to display from the bottom, simply:

banner.show(bannerPosition: .bottom)

Each of the show properties defined above can be mixed and matched to work flawlessly with eachother.

By default, each banner will automatically dismiss after 5 seconds. To dismiss programatically, simply:

banner.dismiss()

To show a banner infinitely until it is manually dismissed, simply:

banner.autoDismiss = false

NotificationBanner has five prebuilt styles that you can choose from:

public enum BannerStyle {
    case danger
    case info
    case customView
    case success
    case warning
}

You can override the predefined colors that NotificationBanner uses for any style by conforming to the

BannerColorsProtocol
:
public protocol BannerColorsProtocol {
    func color(for style: BannerStyle) -> UIColor
}

Its as easy as creating a custom banner colors class:

class CustomBannerColors: BannerColorsProtocol {

internal func color(for style: BannerStyle) -> UIColor {
    switch style {
        case .danger:   // Your custom .danger color
        case .info:     // Your custom .info color
        case .customView:   // Your custom .customView color
        case .success:  // Your custom .success color
        case .warning:  // Your custom .warning color
    }
}

}

And then passing in that class to any notification banner you create:

let banner = NotificationBanner(title: title, style: .success, colors: CustomBannerColors())
banner.show()

By default, the

.info
style will be applied to the banner if no style is provided in the init method. You can set the background color of a banner at any time by simply setting the
backgroundColor
.

Banners with Side Views

A notification banner can have a left accessory view, a right accessory view, or both:

// Success Style Notification with Left View
let leftView = UIImageView(image: #imageLiteral(resourceName: "success"))
let banner = NotificationBanner(title: title, subtitle: subtitle, leftView: leftView, style: .success)
banner.show()

// Danger Style Notification with Right View let rightView = UIImageView(image: #imageLiteral(resourceName: "danger")) let banner = NotificationBanner(title: title, subtitle: subtitle, rightView: rightView, style: .danger) banner.show()

// Info Style Notification with Left and Right Views let leftView = UIImageView(image: #imageLiteral(resourceName: "info")) let rightView = UIImageView(image: #imageLiteral(resourceName: "right_chevron")) let banner = NotificationBanner(title: title, subtitle: subtitle, leftView: leftView, rightView: rightView, style: .info) banner.show()

Banners with Side Views

Each side view will be automically reisized to fit perfectly

Banners with a Custom View

A notification banner can also be initalized with a custom view:

let banner = NotificationBanner(customView: NorthCarolinaBannerView())
banner.show()

Custom Banner

Handling User Interaction

By default, when a banner is tapped or swiped up by a user, it will be dismissed. If you want to detect when the user taps or swipes up on a banner, simply:

banner.onTap = {
    // Do something regarding the banner
}
banner.onSwipeUp = {
    // Do something regarding the banner
}

Banner Events

You can choose to opt into a notification banner's events by registering as its delegate:

banner.delegate = self

Then just make sure to implement the following methods:

internal func notificationBannerWillAppear(_ banner: BaseNotificationBanner)
internal func notificationBannerDidAppear(_ banner: BaseNotificationBanner)
internal func notificationBannerWillDisappear(_ banner: BaseNotificationBanner)
internal func notificationBannerDidDisappear(_ banner: BaseNotificationBanner)

Haptic Feedback Support

By default, when a banner is displayed, a haptic feedback will be generated on devices that support it. The types of haptic feedback are as follows:

public enum BannerHaptic {
    case light
    case medium
    case heavy
    case none
}

To change the type of haptic feedback to generate when a banner is shown, simply:

banner.haptic = .heavy

Banner Queue

By default, each notification banner is placed onto a singleton of an auto-managed

NotificationBannerQueue
. This allows an infinite amount of banners to be displayed without one hiding the other. If you have multiple controllers within your navigation stack that need to be managed by a seperate queue (like a tab bar controller), simply create an instance of a
NotificationBannerQueue
and pass it in to the show function:
banner.show(queue: customQueue)

By default, each notification banner is placed on the back of the queue. If you would rather place the banner in the front and show it immediately no matter how many banners are in the queue, simply state it in the

show()
method:
banner.show(queuePosition: .front)

Adding a banner to the front of the queue will temporarily suspend the currently displayed banner (if there is one) and will resume it after the banner in front of it dismisses.

To get the number of banners currently on the queue, simply:

let numberOfBanners = NotificationBannerQueue.default.numberOfBanners

This is all automatically managed!

Banner Queue and display banners simultaneously (stacked)

You can also create the queue to display several banners at once with controlling of maximum number of banners to be displayed simultaneously. You can "show" more banners than allowed by queue settings - banners what exceed this value will be displayed some time later, after some banners already displayed on screen will be closed. In example below we create queue with maximum simultaneous banners allowed - 3:

let bannerQueueToDisplaySeveralBanners = NotificationBannerQueue(maxBannersOnScreenSimultaneously: 3)

Create five different banners:

let banner1 = FloatingNotificationBanner(title: "Success Notification - 1",
                                         subtitle: "First Notification from 5 in current queue with 3 banners allowed simultaneously",
                                         style: .success)
banner1.delegate = self

let banner2 = FloatingNotificationBanner(title: "Danger Notification - 2", subtitle: "Second Notification from 5 in current queue with 3 banners allowed simultaneously", style: .danger) banner2.delegate = self

let banner3 = FloatingNotificationBanner(title: "Info Notification - 3", subtitle: "Third Notification from 5 in current queue with 3 banners allowed simultaneously", style: .info) banner3.delegate = self

let banner4 = FloatingNotificationBanner(title: "Success Notification - 4", subtitle: "Fourth Notification from 5 in current queue with 3 banners allowed simultaneously", style: .success) banner4.delegate = self

let banner5 = FloatingNotificationBanner(title: "Info Notification - 5", subtitle: "Fifth Notification from 5 in current queue with 3 banners allowed simultaneously", style: .info) banner5.delegate = self

and show all five banners at once:

swift
showBanners([banner1, banner2, banner3, banner4, banner5],
            in: bannerQueue5AllowedMixed)

using this supporting method

func showBanners(_ banners: [FloatingNotificationBanner],
                 in notificationBannerQueue: NotificationBannerQueue) {
    banners.forEach { banner in
        banner.show(bannerPosition: selectedBannerPosition(),
                    queue: notificationBannerQueue,
                    cornerRadius: 8,
                    shadowColor: UIColor(red: 0.431, green: 0.459, blue: 0.494, alpha: 1),
                    shadowBlurRadius: 16,
                    shadowEdgeInsets: UIEdgeInsets(top: 8, left: 8, bottom: 0, right: 8))
    }
}

It will display first three banners at once, and after some time (or by user tap) it will be hidden and 4 and 5 banner will be displayed when. All it with fancy animation.

Feature Requests

I'd love to know anything that you think NotificationBanner is missing. Open an issue and I'll add the

feature request
label to it and I'll do everything I can to accomodate that request if it is in the library's best interest. 😄

Apps that Use NotificationBanner

Q - Talk About Music VH Dispatch Stikkr CardCast Happy Scale Wanderings Modern Magic 8 Ball Envision: Habits Tracker TSUM RIS LukaPizza

Feel free to add yours!

Author

Dalton Hinterscher, [email protected]

License

NotificationBanner is available under the MIT license. See the LICENSE file for more info.

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