# SPStorkController
### About
Controller **as in Apple Music, Podcasts and Mail** apps. Help if you need customize height or suppport modal style in iOS 12.
Simple adding close button and centering arrow indicator. Customizable height. Using custom `TransitionDelegate`.
Alert you can find in [SPAlert](https://github.com/ivanvorobei/SPAlert) project. It support diffrents presets, some animatable.
If you like the project, don't forget to `put star ★` and follow me on GitHub:
## Navigate
- [Requirements](#requirements)
- [Installation](#installation)
- [CocoaPods](#cocoapods)
- [Carthage](#carthage)
- [Swift Package Manager](#swift-package-manager)
- [Manually](#manually)
- [Quick Start](#quick-start)
- [Usage](#usage)
- [Light StatusBar](#light-statusbar)
- [Custom Height](#custom-height)
- [Close Button](#close-button)
- [Arrow Indicator](#arrow-indicator)
- [Dismissing](#dismissing)
- [Corner Radius](#corner-radius)
- [Haptic](#haptic)
- [Snapshots](#snapshots)
- [Navigation Bar](#navigation-bar)
- [Working with UIScrollView](#working-with-uiscrollview)
- [UITableView & UICollectionView](#working-with-uitableview--uicollectionview)
- [Confirm before dismiss](#confirm-before-dismiss)
- [Delegate](#delegate)
- [Storyboard](#storyboard)
- [Sheets in iOS 13](#sheets-in-ios-13)
- [Other Projects](#other-projects)
- [Russian Community](#russian-community)
## Requirements
Swift `4.2` & `5.0`. Ready for use on iOS 10+
## Installation
### CocoaPods:
[CocoaPods](https://cocoapods.org) is a dependency manager for Cocoa projects. For usage and installation instructions, visit their website. To integrate `SPStorkController` into your Xcode project using CocoaPods, specify it in your `Podfile`:
```ruby
pod 'SPStorkController'
```
### Carthage
[Carthage](https://github.com/Carthage/Carthage) is a decentralized dependency manager that builds your dependencies and provides you with binary frameworks. To integrate `SPStorkController` into your Xcode project using Carthage, specify it in your `Cartfile`:
```ogdl
github "ivanvorobei/SPStorkController"
```
### Swift Package Manager
The [Swift Package Manager](https://swift.org/package-manager/) is a tool for managing the distribution of Swift code. It’s integrated with the Swift build system to automate the process of downloading, compiling, and linking dependencies.
To integrate `SPStorkController` into your Xcode project using Xcode 11, specify it in `Project > Swift Packages`:
```ogdl
https://github.com/ivanvorobei/SPStorkController
```
### Manually
If you prefer not to use any of the aforementioned dependency managers, you can integrate `SPStorkController` into your project manually. Put `Source/SPStorkController` folder in your Xcode project. Make sure to enable `Copy items if needed` and `Create groups`.
## Quick Start
Create controller and call func `presentAsStork`:
```swift
import UIKit
import SPStorkController
class ViewController: UIViewController {
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)
let controller = UIViewController()
self.presentAsStork(controller)
}
}
```
If you want customize controller (remove indicator, set custom height and other), create controller and set `transitioningDelegate` to `SPStorkTransitioningDelegate` object. Use `present` or `dismiss` functions:
```swift
let controller = UIViewController()
let transitionDelegate = SPStorkTransitioningDelegate()
controller.transitioningDelegate = transitionDelegate
controller.modalPresentationStyle = .custom
controller.modalPresentationCapturesStatusBarAppearance = true
self.present(controller, animated: true, completion: nil)
```
Please, do not init `SPStorkTransitioningDelegate` like this:
```swift
controller.transitioningDelegate = SPStorkTransitioningDelegate()
```
You will get an error about weak property.
## Usage
### Light StatusBar
To set light status bar for presented controller, use `preferredStatusBarStyle` property. Also set `modalPresentationCapturesStatusBarAppearance`. See example:
```swift
import UIKit
class ModalViewController: UIViewController {
override var preferredStatusBarStyle: UIStatusBarStyle {
return .lightContent
}
}
```
### Custom Height
Property `customHeight` sets custom height for controller. Default is `nil`:
```swift
transitionDelegate.customHeight = 350
```
### Close Button
Property `showCloseButton` added circle button with dismiss action. Default is `false`:
```swift
transitionDelegate.showCloseButton = false
```
### Arrow Indicator
On the top of controller you can add arrow indicator with animatable states. It simple configure.
Property `showIndicator` shows or hides top arrow indicator. Default is `true`:
```swift
transitionDelegate.showIndicator = true
```
Property Parameter `indicatorColor` for customize color of arrow. Default is `gray`:
```swift
transitionDelegate.indicatorColor = UIColor.white
```
Property `hideIndicatorWhenScroll` shows or hides indicator when scrolling. Default is `false`:
```swift
transitionDelegate.hideIndicatorWhenScroll = true
```
You can set always line or arrow indicator. Set `indicatorMode`:
```swift
transitionDelegate.indicatorMode = .alwaysLine
```
### Dismissing
You can also configure events that will dimiss the controller.
Property `swipeToDismissEnabled` enables dismissal by swipe gesture. Default is `true`:
```swift
transitionDelegate.swipeToDismissEnabled = true
```
Property `translateForDismiss` sets how much need to swipe down to close the controller. Work only if `swipeToDismissEnabled` is true. Default is `240`:
```swift
transitionDelegate.translateForDismiss = 100
```
Property `tapAroundToDismissEnabled` enables dismissal by tapping parent controller. Default is `true`:
```swift
transitionDelegate.tapAroundToDismissEnabled = true
```
### Corner Radius
Property `cornerRadius` for customize corner radius of controller's view. Default is `10`:
```swift
transitionDelegate.cornerRadius = 10
```
### Haptic
Property `hapticMoments` allow add taptic feedback for some moments. Default is `.willDismissIfRelease`:
```swift
transitionDelegate.hapticMoments = [.willPresent, .willDismiss]
```
### Snapshots
The project uses a snapshot of the screen in order to avoid compatibility and customisation issues. Before controller presentation, a snapshot of the parent view is made, and size and position are changed for the snapshot. Sometimes you will need to update the screenshot of the parent view, for that use static func:
```swift
SPStorkController.updatePresentingController(modal: controller)
```
and pass the controller, which is modal and uses `SPStorkTransitioningDelegate`.
If the parent controller scrollings and you try to show `SPStorkController`, you will see how it froze, and in a second its final position is updated. I recommend before present `SPStorkController` stop scrolling force:
```swift
scrollView.setContentOffset(self.contentOffset, animated: false)
```
### Navigation Bar
You may want to add a navigation bar to your modal controller. Since it became impossible to change or customize the native controller in swift 4 (I couldn’t even find a way to change the height of the bar), I had to recreate navigation bar from the ground up. Visually it looks real, but it doesn’t execute the necessary functions:
```swift
import UIKit
import SPFakeBar
class ModalController: UIViewController {
let navBar = SPFakeBarView(style: .stork)
override func viewDidLoad() {
super.viewDidLoad()
self.view.backgroundColor = UIColor.white
self.navBar.titleLabel.text = "Title"
self.navBar.leftButton.setTitle("Cancel", for: .normal)
self.navBar.leftButton.addTarget(self, action: #selector(self.dismissAction), for: .touchUpInside)
self.view.addSubview(self.navBar)
}
}
```
You only need to add a navigation bar to the main view, it will automatically layout. Use style `.stork` in init of `SPFakeBarView`. Here is visual preview with Navigation Bar and without it:
To use it, you need to install [SPFakeBar](https://github.com/ivanvorobei/SPFakeBar) pod:
```ruby
pod 'SPFakeBar'
```
### Working with UIScrollView
If you use `UIScrollView` (or UITableView & UICollectionView) on controller, I recommend making it more interactive. When scrolling reaches the top position, the controller will interactively drag down, simulating a closing animation. Also available close controller by drag down on `UIScrollView`. To do this, set the delegate and in the function `scrollViewDidScroll` call:
```swift
func scrollViewDidScroll(_ scrollView: UIScrollView) {
SPStorkController.scrollViewDidScroll(scrollView)
}
```
### Working with UITableView & UICollectionView
Working with a collections classes is not difficult. In the `Example` folder you can find an implementation. However, I will give a couple of tips for making the table look better.
Firstly, if you use `SPFakeBarView`, don't forget to set top insets for content & scroll indicator. Also, I recommend setting bottom insets (it optional):
```swift
tableView.contentInset.top = self.navBar.height
tableView.scrollIndicatorInsets.top = self.navBar.height
```
Please, also use `SPStorkController.scrollViewDidScroll` function in scroll delegate for more interactiveness with your collection or table view.
### Confirm before dismiss
For confirm closing by swipe, tap around, close button and indicator use `SPStorkControllerConfirmDelegate`. Implenet protocol:
```swift
@objc public protocol SPStorkControllerConfirmDelegate: class {
var needConfirm: Bool { get }
func confirm(_ completion: @escaping (_ isConfirmed: Bool)->())
}
```
and set `confirmDelegate` property to object, which protocol impleneted. Function `confirm` call if `needConfirm` return true. Pass `isConfirmed` with result. Best options use `UIAlertController` with `.actionSheet` style for confirmation.
If you use custom buttons, in the target use this code:
```swift
SPStorkController.dismissWithConfirmation(controller: self, completion: nil)
```
It call `confirm` func and check result of confirmation. See example project for more details.
### Delegate
You can check events by implement `SPStorkControllerDelegate` and set delegate for `transitionDelegate`:
```swift
transitionDelegate.storkDelegate = self
```
Delagate has this functions:
```swift
protocol SPStorkControllerDelegate: class {
optional func didDismissStorkBySwipe()
optional func didDismissStorkByTap()
}
```
### Storyboard
If need using `SPStorkController` with storyboard, set class `SPStorkSegue` for transition setting in storyboard file. I will give the class code so that you understand what it does:
```swift
import UIKit
class SPStorkSegue: UIStoryboardSegue {
public var transitioningDelegate: SPStorkTransitioningDelegate?
override func perform() {
transitioningDelegate = transitioningDelegate ?? SPStorkTransitioningDelegate()
destination.transitioningDelegate = transitioningDelegate
destination.modalPresentationStyle = .custom
super.perform()
}
}
```
Open your storyboard, choose transition and open right menu. Open `Attributes Inspector` and in Class section insert `SPStorkSegue`.
### Modal presentation of other controller
If you want to present modal controller on `SPStorkController`, please set:
```swift
controller.modalPresentationStyle = .custom
```
It’s needed for correct presentation and dismissal of all modal controllers.
## Sheets in iOS 13
Apple present in `WWDC 2019` new modal presentation style - `Sheets`. It ready use Support interactive dismiss and work with navigations bars. Available since iOS 13. I will add more information when I study this in more detail. You can see presentation [here](https://developer.apple.com/videos/play/wwdc2019/224/).
## Other Projects
I love being helpful. Here I have provided a list of libraries that I keep up to date. For see `video previews` of libraries without install open [opensource.ivanvorobei.by](https://opensource.ivanvorobei.by) website.
I have libraries with native interface and managing permissions. Also available pack of useful extensions for boost your development process.
## Russian Community
Подписывайся в телеграмм-канал, если хочешь получать уведомления о новых туториалах.
Со сложными и непонятными задачами помогут в чате.
Видео-туториалы выклыдываю на [YouTube](https://tutorials.ivanvorobei.by/youtube):
[](https://tutorials.ivanvorobei.by/youtube)