DeclarativeUIKit

中文介绍

A simple library(only 200 lines of code of Core) make UIKit declaretive like SwiftUI, no custom component, all UIKit original component.

Use EGChainable to call API chainable.

Use RxSwift to make UI component update automatic when data update.

Also work perfectly with Autolayout or it's API wrapper like SnapKit, no limit when apply layout constraint in resulutBuilder.

When something DeclarativeUIKit can't do, you can do it imperative way, like normal UIKit usage, it's ok.

Usage

DeclarativeUIKit/Example/DeclarativeUIKit/ViewController.swift

Lines 22 to 144 in 5a4a20a

	class ViewController: UIViewController {
	@RxUIPublished var text = "Hello"
	@RxUIPublished var text1 = "Hello"
	var stack: UIStackView?
	var ahh: [UIView]?
	override func viewDidLoad() {
	super.viewDidLoad()
	// Do any additional setup after loading the view, typically from a nib.
	DispatchQueue.main.asyncAfter(deadline: .now() + 2) {
	self.text1 = "World"
	}
	view.body {
	[UIView().C.backgroundColor(.red), UILabel()].asBuildItems
	UIView().C.backgroundColor(.red)
	UIView().C.backgroundColor(.red).asView()
	UILabel().apply { label in
	label.R.text(Observable.combineLatest($text, $text1).flatMap { PublishSubject.just([$0, $1].joined(separator: " ")) })
	label.C.textColor(.black)
	.text("Hello, World!")
	label.S.makeConstraints { make in
	make.centerX.equalToSuperview()
	make.top.equalToSuperview().offset(70)
	}
	}
	UIView {
	UIView().alias("Round cornder backgound").body {
	UIStackView.V {
	UIListView(with: NSLayoutConstraint.Axis.horizontal) {
	for i in 0..<50 {
	UILabel().apply { label in
	label.C.text("\(i)").textAlignment(.center)
	label.C.backgroundColor(.random)
	label.S.makeConstraints { make in
	make.width.equalTo(30)
	}
	}
	}
	}.apply { view in
	view.S.makeConstraints { maker in
	maker.height.equalTo(30)
	maker.leading.trailing.equalToSuperview()
	}
	}
	["ahh", "ahhh"].map { s in
	UILabel().apply { label in
	label.C.text(s).textAlignment(.center)
	}
	}.assign(to: &ahh)
	UILabel().alias("Title").apply { label in
	label.text = "Delete your account?"
	}.spacingAfterSelf(8)
	UIStackView.H {
	UILabel().apply { label in
	label.text = "ahh"
	}
	UILabel().alias("Red Alert").apply { label in
	label.text = "Deleting account is permanent"
	label.textColor = .red.withAlphaComponent(0.4)
	}
	}
	UILabel().alias("Long text, desc of alert.").apply { label in
	label.text = "Your Favourite Meditation and Music、your progress of mediation journey will be permanently deleted."
	label.numberOfLines = 0
	label.textAlignment = .center
	label.S.makeConstraints { make in
	make.leading.equalToSuperview().offset(16)
	make.trailing.equalToSuperview().offset(-16)
	}
	}.spacingAfterSelf(20)
	CircleView {
	UIButton().apply { button in
	button.C.setTitle("ahhhhhhhhhhhhhhhh", for: .normal).setTitleColor(.white, for: .normal)
	button.S.makeConstraints { make in
	make.edges.equalToSuperview()
	make.width.equalTo(250)
	make.height.equalTo(40)
	}
	}
	}.apply { view in
	view.backgroundColor = .red.withAlphaComponent(0.6)
	}.spacingAfterSelf(10)
	CircleView {
	UIButton().apply { button in
	button.setTitle("Cancel", for: .normal)
	button.setTitleColor(.white, for: .normal)
	button.S.makeConstraints { make in
	make.edges.equalToSuperview()
	make.width.equalTo(250)
	make.height.equalTo(40)
	}
	}
	}.apply { view in
	view.backgroundColor = .gray.withAlphaComponent(0.6)
	}
	UISpace()
	}.apply { stack in
	stack.alignment = .center
	stack.S.makeConstraints { make in
	make.edges.equalToSuperview()
	}
	}.assign(to: &stack)
	}.apply { view in
	view.backgroundColor = .white
	view.layer.cornerRadius = 8
	view.clipsToBounds = true
	view.S.makeConstraints { make in
	make.width.equalTo(300)
	make.height.equalTo(400)
	make.center.equalToSuperview()
	}
	}
	}.apply { view in
	view.backgroundColor = UIColor.black.withAlphaComponent(0.5)
	view.S.makeConstraints { make in
	make.edges.equalToSuperview()
	}
	}
	}
	}

Example

To run the example project, clone the repo, and run pod install from the Example directory first.

Requirements

iOS 10+

Installation

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

pod 'EGDeclarativeUIKit'

Author

EkkoG, beijiu572@gmail.com

License

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