UStack

A tool for StackView in UIKit.

Requirements

• iOS 11.0+
• Xcode 12.5+

Use cases

HStackView use-case:

letlabel=UILabel()letbutton=UIButton()letsimpleView=UIView()lethstack=HStackView{
label
button
simpleView
}

VStackView use-case:

letlabel=UILabel()letbutton=UIButton()letsimpleView=UIView()letvstack=VStackView{
label
button
simpleView
}

Nested use-case:

letrefresh=Bool.random()letrefreshAnother=Bool.random()letidx=Int.random(in:1...12)HStackView{VStackView{UILabel()UIButton()}if refresh {VStackView{UIImageView()UIView()}}if refreshAnother {VStackView{UIImageView()UIView()}}else{UIView()}UIView().withSubViews{HStackView{UILabel()UIButton()}}}

ps: every control flow will be treated as a block, give the simplest VStack for example:

• buildExpression(_:) -> UILabel
• buildExpression(_:) -> UIButton
• buildBlock(_:) -> VStackView
• buildExpression(_:) -> VStackView

Sample

As the example image above, the implement code:

private lazy varregisterActionStack=VStackView(spacing: minorSpacing, alignment:.fill){
registerButton
UIView.spacer()
loginButton
}private lazy varregisterPolicyStack=HStackView(spacing: mediumSpacing){UIView.spacer()
policyCircleButton
tipLabel
policyInfoButton
UIView.spacer()}private lazy varcontentStack=VStackView(spacing: mainMargin, alignment:.center){
sloganImageView
loginLogoImageView
registerActionStack
UIView.spacer()
registerPolicyStack
}

and the layout code:

view.withSubViews{
contentStack
}
contentStack.snp.makeConstraints{
$0.top.equalTo(view.safeAreaLayoutGuide.snp.top).offset(topPadding)
$0.leading.trailing.equalToSuperview().inset(horizontalPadding)
$0.bottom.equalTo(view.safeAreaLayoutGuide.snp.bottom)}
registerButton.snp.makeConstraints{
$0.width.equalTo(view).inset(horizontalPadding)}

Installation

Swift Package Manager

• File > Swift Packages > Add Package Dependency
• Add https://github.com/foxsin10/UStack.git
• Select "Up to Next Major" with "2.0.0"

CocoaPods

source'https://github.com/CocoaPods/Specs.git'platform:ios,'11.0'use_frameworks!target'MyApp'dopod'UStack','~> 2.3.0'end

License

UStack is released under the MIT license. See LICENSE for details.