Introduction

NVActivityIndicatorView is a collection of awesome loading animations.

This is original a fork from DGActivityIndicatorView, inspired by Loaders.css, written in Swift with full implementation of animations, plus more.

You can also find Objective-C version of this here.

Demo

For first-hand experience, just open the project and run it.

Animation types

Type	Type	Type	Type
1. BallPulse	2. BallGridPulse	3. BallClipRotate	4. SquareSpin
5. BallClipRotatePulse	6. BallClipRotateMultiple	7. BallPulseRise	8. BallRotate
9. CubeTransition	10. BallZigZag	11. BallZigZagDeflect	12. BallTrianglePath
13. BallScale	14. LineScale	15. LineScaleParty	16. BallScaleMultiple
17. BallPulseSync	18. BallBeat	19. LineScalePulseOut	20. LineScalePulseOutRapid
21. BallScaleRipple	22. BallScaleRippleMultiple	23. BallSpinFadeLoader	24. LineSpinFadeLoader
25. TriangleSkewSpin	26. Pacman	27. BallGridBeat	28. SemiCircleSpin
29. BallRotateChase	30. Orbit	31. AudioEqualizer

Installation

Cocoapods

Install Cocoapods if need be.

$ gem install cocoapods

Add NVActivityIndicatorView in your Podfile.

use_frameworks!

pod 'NVActivityIndicatorView'

Then, run the following command.

$ pod install

Carthage

Install Carthage if need be.

$ brew update
$ brew install carthage

Add NVActivityIndicatorView in your Cartfile.

github "ninjaprox/NVActivityIndicatorView"

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

_Note: You might encounter compile issue, if so please use carthage branch instead. Check issue #101 for more information.

Manual

Copy NVActivityIndicatorView folder to your project. That's it.

Note: Make sure that all files in NVActivityIndicatorView included in Compile Sources in Build Phases.

Migration

Vesrion 3.0

This version requires Xcode 8.0 and Swift 3.

NVActivityIndicatorView.startAnimation() and NVActivityIndicatorView.stopAnimation() are deleted. Use NVActivityIndicatorView.startAnimating() and NVActivityIndicatorView.stopAnimating() instead.
UIViewController.startActivityAnimating() and UIViewController.stopActivityAnimating() are deleted. Use UIViewController.startAnimating() and UIViewController.stopAnimating() instead.

Version 2.0

This version continues to spport Xcode 7.0 and Swift 2.2 and earlier. For Swift 2.3 support, use swift2.3 branch instead.

pod 'NVActivityIndicatorView', :git => 'https://github.com/ninjaprox/NVActivityIndicatorView.git', :branch => 'swift2.3'

Usage

Firstly, import NVActivityIndicatorView.

import NVActivityIndicatorView

Initialization

Then, there are two ways you can create NVActivityIndicatorView:

By storyboard, changing class of any UIView to NVActivityIndicatorView.

Note: Set Module to NVActivityIndicatorView.

By code, using initializer. All parameters other than frame are optional and NVActivityIndicatorView.DEFAULT_* are used as default values.

NVActivityIndicatorView(frame: frame, type: type, color: color, padding: padding)

Note: Check DEFAULTS for default values.

Control

Start animating.

activityIndicatorView.startAnimating()

Stop animating.

activityIndicatorView.stopAnimating()

Determine if it is animating.

animating = activityIndicatorView.animating

Change properties

In storyboard, you can change all properties in Attributes inspector tab of Utilities panel.

Note: Use one of values (case-insensitive) in Animation types for Type Name.

All properties are public so you can change them all after initiating.

Note: All changes must be made before calling startAnimating().

UI blocker

By conforming NVActivityIndicatorViewable protocol, you can use NVActivityIndicatorView as UI blocker for UIViewController.

class ViewController: UIViewController, NVActivityIndicatorViewable { }

Start animating.

startAnimating(size, message) // plus other parameters as in initializer.

Stop animating.

stopAnimating()

Or you can use NVActivityIndicatorPresenter to display UI blocker anywhere.

Start animating.

let activityData = ActivityData()

NVActivityIndicatorPresenter.sharedInstance.startAnimating(activityData)

Note: Check documentation for detail of ActivityData.

Stop animating.

NVActivityIndicatorPresenter.sharedInstance.stopAnimating()

DEFAULTS

There are global defaults for all NVActivityIndicatorView instances.

Default animation type.

NVActivityIndicatorView.DEFAULT_TYPE = .BallSpinFadeLoader

Default color of activity indicator view.

NVActivityIndicatorView.DEFAULT_COLOR = UIColor.white

Default padding of activity indicator view.

NVActivityIndicatorView.DEFAULT_PADDING = CGFloat(0)

Default size of activity indicator view used in UI blocker.

NVActivityIndicatorView.DEFAULT_BLOCKER_SIZE = CGSizeMake(60, 60)

Default background color of UI blocker.

NVActivityIndicatorView.DEFAULT_BLOCKER_BACKGROUND_COLOR = UIColor(red: 0, green: 0, blue: 0, alpha: 0.5)

Default display time threshold.

Default time that has to be elapsed (between calls of startAnimating() and stopAnimating()) in order to actually display UI blocker. It should be set thinking about what the minimum duration of an activity is to be worth showing it to the user. If the activity ends before this time threshold, then it will not be displayed at all.

NVActivityIndicatorView.DEFAULT_BLOCKER_DISPLAY_TIME_THRESHOLD = 0 // in milliseconds

Default minimum display time.

Default minimum display time of UI blocker. Its main purpose is to avoid flashes showing and hiding it so fast. For instance, setting it to 200ms will force UI blocker to be shown for at least this time (regardless of calling stopAnimating() ealier).

NVActivityIndicatorView.DEFAULT_BLOCKER_MINIMUM_DISPLAY_TIME = 0 // in milliseconds

Default message displayed in UI blocker.

NVActivityIndicatorView.DEFAULT_BLOCKER_MESSAGE: String? = nil

Default font of message displayed in UI blocker.

NVActivityIndicatorView.DEFAULT_BLOCKER_MESSAGE_FONT = UIFont.boldSystemFont(ofSize: 20)

Acknowledgment

Thanks Connor Atherton for great loaders and Danil Gontovnik for kick-start.

License

The MIT License (MIT)