Quick Example
싱글 및 리스트형태의 스크린을 예시로 하였습니다.
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싱글 및 리스트형태의 스크린을 예시로 하였습니다.
Last updated
ViewController의 부모노드에 들어갈 자식 노드를 정의해서 사용하는 방법입니다. 비즈니스 로직이나 명세에 따라서 복잡도가 증가할수록 Massive 해질 수도 있습니다.
final class TestNodeController: ASDKViewController<ASDisplayNode> {
// MARK: UI
private let imageNode: ASImageNode = {
let node = ASImageNode()
node.image = UIImage(named: "image")
node.borderColor = UIColor.gray.cgColor
node.borderWidth = 1.0
node.cornerRadius = 15.0
node.contentMode = .scaleAspectFit
return node
}()
private let titleNode: ASTextNode = {
let node = ASTextNode()
let paragraphStyle = NSMutableParagraphStyle()
paragraphStyle.alignment = .center
node.attributedText = NSAttributedString(
string: "Welcome to Texture-KR",
attributes: [
.font: UIFont.boldSystemFont(ofSize: 15.0),
.foregroundColor: UIColor.gray,
.paragraphStyle: paragraphStyle
]
)
return node
}()
// MARK: Initializing
override init() {
super.init(node: ASDisplayNode())
self.node.backgroundColor = .white
self.node.automaticallyManagesSubnodes = true
self.node.automaticallyRelayoutOnSafeAreaChanges = true
self.node.layoutSpecBlock = { [weak self] (node, constraintedSize) -> ASLayoutSpec in
return self?.layoutSpecThatFits(constraintedSize) ?? ASLayoutSpec()
}
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
// MARK: Layout
private func layoutSpecThatFits(_ constraintedSize: ASSizeRange) -> ASLayoutSpec {
var containerInsets: UIEdgeInsets = self.node.safeAreaInsets
containerInsets.left += 15.0
containerInsets.right += 15.0
containerInsets.top = containerInsets.bottom
return ASInsetLayoutSpec(
insets: containerInsets,
child: self.contentLayoutSpec()
)
}
private func contentLayoutSpec() -> ASLayoutSpec {
return ASStackLayoutSpec(
direction: .vertical,
spacing: 10.0,
justifyContent: .center,
alignItems: .center,
children: [
self.imageLayoutSpec(),
self.titleNode
]
)
}
private func imageLayoutSpec() -> ASLayoutSpec {
return ASRatioLayoutSpec(ratio: 1.0, child: self.imageNode).styled {
$0.flexShrink = 1.0
}
}
}앞서 설명했듯이 ASViewController는 제네릭형태로 ASDisplayNode의 모든 Subclass를 받아서 사용할 수 있습니다.
따라서 아래의 코드와 같이 ViewController에 들어간 화면 구성요소들을 모듈화 시켜서 ViewController가 Massive해지는 것을 피할 수도 있습니다.
final class TestNode: ASDisplayNode {
// MARK: UI
private let imageNode: ASImageNode = {
let node = ASImageNode()
node.image = UIImage(named: "image")
node.borderColor = UIColor.gray.cgColor
node.borderWidth = 1.0
node.cornerRadius = 15.0
node.contentMode = .scaleAspectFit
return node
}()
private let titleNode: ASTextNode = {
let node = ASTextNode()
let paragraphStyle = NSMutableParagraphStyle()
paragraphStyle.alignment = .center
node.attributedText = NSAttributedString(
string: "Welcome to Texture-KR",
attributes: [
.font: UIFont.boldSystemFont(ofSize: 15.0),
.foregroundColor: UIColor.gray,
.paragraphStyle: paragraphStyle
]
)
return node
}()
// MARK: Initializing
override init() {
super.init()
self.automaticallyManagesSubnodes = true
self.automaticallyRelayoutOnSafeAreaChanges = true
}
// MARK: Node Life Cycle
override func layout() {
super.layout()
self.imageNode.cornerRadius = 15.0
}
// MARK: Layout
override func layoutSpecThatFits(_ constraintedSize: ASSizeRange) -> ASLayoutSpec {
var containerInsets: UIEdgeInsets = self.safeAreaInsets
containerInsets.left += 15.0
containerInsets.right += 15.0
containerInsets.top = containerInsets.bottom
return ASInsetLayoutSpec(
insets: containerInsets,
child: self.contentLayoutSpec()
)
}
private func contentLayoutSpec() -> ASLayoutSpec {
return ASStackLayoutSpec(
direction: .vertical,
spacing: 10.0,
justifyContent: .center,
alignItems: .center,
children: [
self.imageLayoutSpec(),
self.titleNode
]
)
}
private func imageLayoutSpec() -> ASLayoutSpec {
return ASRatioLayoutSpec(ratio: 1.0, child: self.imageNode).styled {
$0.flexShrink = 1.0
}
}
}final class TestNodeController: ASDKViewController<TestNode> {
// MARK: Initializing
override init() {
super.init(node: TestNode())
self.node.backgroundColor = .white
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
}앞서 설명했듯이 ASViewController는 제네릭형태로 ASDisplayNode의 모든 Subclass를 받아서 사용할 수 있습니다. ASTableNode는 ASDisplayNode의 subclass이므로 ASViewController를 만들때 ASVIewController<ASTableNode> 를 상속받아 ViewController를 만듭니다.
final class TestCellNode: ASCellNode {
// MARK: UI
private let imageNode: ASImageNode = {
let node = ASImageNode()
node.image = UIImage(named: "image")
node.borderColor = UIColor.gray.cgColor
node.borderWidth = 1.0
node.contentMode = .scaleAspectFit
return node
}()
private let titleNode: ASTextNode = {
let node = ASTextNode()
node.maximumNumberOfLines = 1
return node
}()
// MARK: Initializing
init(item: String) {
super.init()
self.automaticallyManagesSubnodes = true
self.selectionStyle = .none
self.backgroundColor = .white
self.titleNode.attributedText = NSAttributedString(
string: item,
attributes: [
.font: UIFont.boldSystemFont(ofSize: 15.0),
.foregroundColor: UIColor.gray
]
)
}
// MARK: Node Life Cycle
override func layout() {
super.layout()
self.imageNode.cornerRadius = 15.0
}
// MARK: Layout
override func layoutSpecThatFits(_ constrainedSize: ASSizeRange) -> ASLayoutSpec {
return ASInsetLayoutSpec(
insets: UIEdgeInsets(top: 15.0, left: 15.0, bottom: 15.0, right: 15.0),
child: self.contentLayoutSpec()
)
}
private func contentLayoutSpec() -> ASLayoutSpec {
return ASStackLayoutSpec(
direction: .horizontal,
spacing: 10.0,
justifyContent: .start,
alignItems: .stretch,
children: [
self.imageLayoutSpec().styled {
$0.flexBasis = ASDimension(unit: .fraction, value: 0.3)
},
self.titleNode.styled {
$0.flexBasis = ASDimension(unit: .fraction, value: 0.7)
}
]
)
}
private func imageLayoutSpec() -> ASLayoutSpec {
return ASRatioLayoutSpec(ratio: 1.0, child: self.imageNode)
}
}final class TestNodeController: ASDKViewController<ASTableNode> {
// MARK: Properties
var items: [String] = [
"Welcome to Texture-KR",
"Welcome to Texture-KR",
"Welcome to Texture-KR, long test!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
]
// MARK: Initializing
override init() {
super.init(node: ASTableNode(style: .plain))
self.node.backgroundColor = .white
self.node.dataSource = self
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
}
// MARK: - ASTableDataSource
extension TestNodeController: ASTableDataSource {
func numberOfSections(in tableNode: ASTableNode) -> Int {
return 1
}
func tableNode(_ tableNode: ASTableNode, numberOfRowsInSection section: Int) -> Int {
return items.count
}
func tableNode(_ tableNode: ASTableNode, nodeBlockForRowAt indexPath: IndexPath) -> ASCellNodeBlock {
let item = self.items[indexPath.row]
return {
return TestCellNode(item: item)
}
}
}
