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https://github.com/HeroTransitions/Hero

Elegant transition library for iOS & tvOS
https://github.com/HeroTransitions/Hero

animation animations carthage custom-transitions hero ios ios-animation ios-framework ios-lib ios-swift ios-transition layout material-design swift swiftpm transition-animation xcode

Last synced: 25 days ago
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Elegant transition library for iOS & tvOS

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README 

        



**Hero** is a library for building iOS view controller transitions. It provides a declarative layer on top of the UIKit's cumbersome transition APIs—making custom transitions an easy task for developers.



[![Carthage compatible](https://img.shields.io/badge/Carthage-Compatible-brightgreen.svg?style=flat)](https://github.com/Carthage/Carthage)

[![Accio supported](https://img.shields.io/badge/Accio-supported-0A7CF5.svg?style=flat)](https://github.com/JamitLabs/Accio)

[![codecov](https://codecov.io/gh/HeroTransitions/Hero/branch/develop/graph/badge.svg)](https://codecov.io/gh/HeroTransitions/Hero)

[![Version](https://img.shields.io/cocoapods/v/Hero.svg?style=flat)](http://cocoapods.org/pods/Hero)

[![License](https://img.shields.io/cocoapods/l/Hero.svg?style=flat)](https://github.com/lkzhao/Hero/blob/master/LICENSE?raw=true)

![Xcode 10.0+](https://img.shields.io/badge/Xcode-10.0%2B-blue.svg)

![iOS 10.0+](https://img.shields.io/badge/iOS-10.0%2B-blue.svg)

![Swift 4.0+](https://img.shields.io/badge/Swift-4.0%2B-orange.svg)

[![中文 README](https://img.shields.io/badge/%E4%B8%AD%E6%96%87-README-blue.svg?style=flat)](https://github.com/lkzhao/Hero/blob/master/README.zh-cn.md)

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[![Unit Test](https://github.com/HeroTransitions/Hero/actions/workflows/test.yml/badge.svg)](https://github.com/HeroTransitions/Hero/actions/workflows/test.yml)

[![Swift PM](https://github.com/HeroTransitions/SwiftPMTest/actions/workflows/spm.yml/badge.svg)](https://github.com/HeroTransitions/SwiftPMTest/actions/workflows/spm.yml)



      




Hero is similar to Keynote's **Magic Move**. It checks the `heroID` property on all source and destination views. Every matched view pair is then automatically transitioned from its old state to its new state.



Hero can also construct animations for unmatched views. It is easy to define these animations via the `heroModifiers` property. Hero will run these animations alongside the **Magic Move** animations. All of these animations can be **interactively controlled** by user gestures.



At view controller level, Hero provides several template transitions that you can set through `heroModalAnimationType`, `heroNavigationAnimationType`, and `heroTabBarAnimationType`. These can be used as the foundation of your custom transitions. Combine with `heroID` & `heroModifiers` to make your own unique transitions.



      




By default, Hero provides **dynamic duration** based on the [Material Design Motion Guide](https://material.io/design/motion/speed.html#easing). Duration is automatically determined by changes to distance and size—saving you the hassle, while providing consistent and delightful animations.



Hero doesn't make any assumptions about how the view is built or structured. It won't modify any of your views' states other than hiding them during the animation. This makes it work with **Auto Layout**, **programmatic layout**, **UICollectionView** (without modifying its layout object), **UITableView**, **UINavigationController**, **UITabBarController**, etc...



## Usage Example 1






### View Controller 1



```swift

redView.hero.id = "ironMan"

blackView.hero.id = "batMan"

```



### View Controller 2



```swift

self.hero.isEnabled = true

redView.hero.id = "ironMan"

blackView.hero.id = "batMan"

whiteView.hero.modifiers = [.translate(y:100)]

```



## Usage Example 2






### View Controller 1



```swift

greyView.hero.id = "skyWalker"

```



### View Controller 2



```swift

self.hero.isEnabled = true

greyView.hero.id = "skyWalker"



// collectionView is the parent view of all red cells

collectionView.hero.modifiers = [.cascade]

for cell in redCells {

    cell.hero.modifiers = [.fade, .scale(0.5)]

}

```



You can do these in the **storyboard** too!








## Installation



### CocoaPods



Add the following entry to your Podfile:



```rb

pod 'Hero'

```



Then run `pod install`.



Don't forget to `import Hero` in every file you'd like to use Hero.



### Carthage



Add the following entry to your `Cartfile`:



```text

github "HeroTransitions/Hero"

```



Then run `carthage update`.



If this is your first time using Carthage in the project, you'll need to go through some additional steps as explained [over at Carthage](https://github.com/Carthage/Carthage#adding-frameworks-to-an-application).



### Accio



Add the following to your `Package.swift`:



```swift

.package(url: "https://github.com/HeroTransitions/Hero.git", .upToNextMajor(from: "1.4.0")),

```



Next, add `Hero` to your App targets dependencies like so:



```swift

.target(

    name: "App",

    dependencies: [

        "Hero",

    ]

),

```



Then run `accio update`.



### Swift Package Manager



To integrate using Apple's Swift package manager, add the following as a dependency to your `Package.swift`:



```swift

.package(url: "https://github.com/HeroTransitions/Hero.git", .upToNextMajor(from: "1.3.0"))

```



and then specify `"Hero"` as a dependency of the Target in which you wish to use Hero.

Here's an example `PackageDescription`:



```swift

// swift-tools-version:4.0

import PackageDescription



let package = Package(

    name: "MyPackage",

    products: [

        .library(

            name: "MyPackage",

            targets: ["MyPackage"]),

    ],

    dependencies: [

        .package(url: "https://github.com/HeroTransitions/Hero.git", .upToNextMajor(from: "1.6.3"))

    ],

    targets: [

        .target(

            name: "MyPackage",

            dependencies: ["Hero"])

    ]

)

```



### Manually



- Drag the **Sources** folder anywhere in your project.



## Documentations



Checkout the **[WIKI PAGES (Usage Guide)](https://github.com/lkzhao/Hero/wiki/Usage-Guide)** for documentations.



For more up-to-date ones, please see the header-doc. (use **alt+click** in Xcode)




Dash compatible API docs: https://HeroTransitions.github.io/Hero/



## Interactive Transition Tutorials



[Interactive transitions with Hero (Part 1)](https://lkzhao.gitbooks.io/hero/content/docs/InteractiveTransition.html)



## FAQ



### Not able to use Hero transition even when `self.hero.isEnabled` is set to true



Make sure that you have also enabled `self.hero.isEnabled` on the navigation controller if you are doing a push/pop inside the navigation controller.



### Views being covered by another matched view during the transition



Matched views use global coordinate space while unmatched views use local coordinate space by default. Local coordinate spaced views might be covered by other global coordinate spaced views. To solve this, use the `useGlobalCoordinateSpace` modifier on the views being covered. Checkout [Coordinate Space Wiki page](https://github.com/lkzhao/Hero/wiki/Coordinate-Space) for details.



### Push animation is shown along side my custom animation



This is the default animation for navigation controller provided by Hero. To disable the push animation, set `self.hero.navigationAnimationType` to `.fade` or `.none` on the navigation controller.



### How do I use a different default animation when dismissing



You can use the animation type `.selectBy(presenting:dismissing)` to specify a different default animation for dismiss.



For example:



```swift

    self.hero.modalAnimationType = .selectBy(presenting:.zoom, dismissing:.zoomOut)

```



## Contribute



We welcome any contributions. Please read the [Contribution Guide](https://github.com/lkzhao/Hero/wiki/Contribution-Guide).