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https://github.com/emrepun/StickyTabBarViewController
Sticky and Collapsible View on top of tab bar
https://github.com/emrepun/StickyTabBarViewController
bottom-sheet bottomsheet collapsible swift tabbarcontroller ui-components
Last synced: 4 months ago
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Sticky and Collapsible View on top of tab bar
- Host: GitHub
- URL: https://github.com/emrepun/StickyTabBarViewController
- Owner: emrepun
- License: mit
- Created: 2020-03-23T08:16:39.000Z (over 4 years ago)
- Default Branch: master
- Last Pushed: 2023-05-13T12:49:12.000Z (about 1 year ago)
- Last Synced: 2024-02-28T10:22:15.963Z (4 months ago)
- Topics: bottom-sheet, bottomsheet, collapsible, swift, tabbarcontroller, ui-components
- Language: Swift
- Homepage:
- Size: 147 KB
- Stars: 147
- Watchers: 7
- Forks: 15
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Lists
- awesome-ios - TabBarAnimation
README
# StickyTabBarViewController
Sticky and Collapsible View Controller on top of tab bar
## Requirements:
- iOS 10.0
- Tab bar is visible as long as there is a sticky view controller allocated on top of it (any vc pushed at any point should not set ```hidesBottomBarWhenPushed``` to ```true```.
## Installation
StickyTabBarViewController is available through [SPM](https://swift.org/package-manager/) and [CocoaPods](http://cocoapods.org).
- SPM Installation:
Add it as a new package dependency with https://github.com/emrepun/StickyTabBarViewController.git
- CocoaPods Installation:
Simply add the following line to your Podfile:
```ruby
pod 'StickyTabBarViewController', '1.0.5'
```
## Usage
Subclass ```StickyViewControllerSupportingTabBarController``` from your tab bar controller.
Configure animation duration or collapsed view height directly from your tabbar controller:
From ```viewDidLoad```:
```swift
import UIKit
import StickyTabBarViewController
class MainTabBarController: StickyViewControllerSupportingTabBarController {
override func viewDidLoad() {
super.viewDidLoad()
collapsedHeight = 50.0
animationDuration = 0.5
}
}
```
By overriding initialisers of the tabbar controller:
```swift
override init(nibName nibNameOrNil: String?, bundle nibBundleOrNil: Bundle?) {
super.init(nibName: nibNameOrNil, bundle: nibBundleOrNil)
// here if you are using xib
collapsedHeight = 50.0
animationDuration = 0.5
}
required init?(coder: NSCoder) {
super.init(coder: coder)
// configure also on required init (if you are using storyboard for example)
collapsedHeight = 50.0
animationDuration = 0.5
}
```
Can also update it any time by accessing to tabBarController.
## Presented View Controller Configurations:
Any view controller to have sticky behaviour must conform to ```Expandable``` and implement a ```minimisedView```.
The implemented ```minimisedView``` should be ideally anchored on top of the view controller's view and its height (either by a direct height constraint or some other constraints) should be equal to the value of ```collapsedHeight```. You don't need to worry about hiding or showing it since it is handled by StickyTabBarViewController itself.
```swift
var minimisedView: UIView {
return UIView() // or return your outlet for minimised view.
}
```
Collapse sticky view from the view controller that conforms to ```Expandable``` as following:
```swift
container?.collapseChild()
```
Expand sticky view from the view controller that conforms to ```Expandable``` as following:
```swift
container?.expandChild()
```
Remove sticky view from the view controller that conforms to ```Expandable``` as following:
```swift
container?.removeCollapsableChild(animated:)
```
Configure a Sticky child ViewController as following:
```swift
if let tabBarController = tabBarController as? StickyViewControllerSupportingTabBarController {
let viewControllerToStick = SampleChildViewController()
tabBarController.configureCollapsableChild(viewControllerToStick,
isFullScreenOnFirstAppearance: true)
}
```
## Interaction with the presented sticky child view controller from anywhere with tabBarController access:
Access tabBarController to interact with sticky child view controller:
```swift
var tabController: StickyViewControllerSupportingTabBarController? {
if let tabBarController = tabBarController as? StickyViewControllerSupportingTabBarController {
return tabBarController
}
return nil
}
```
Expand/collapse child view controller:
```swift
tabController?.collapseChild()
```
```swift
tabController?.expandChild()
```
## Pending Improvements:
- It would be nice to have the ability to hide tab bar and status bar upon expanding, in parameterised way.
- Right now it is not possible to configure or overwrite the implemented sticky VC, one must first remove it and then implement another if needed. Maybe implement overwriting if configure is called while there is already a view controller allocated?