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karigrooms / blog--observableobject+protocols--typical-usage.swift
Last active November 15, 2021 16:44
Blog: ObservableObjects and Protocols - Example ObservableObject
// Copyright 2021 Expedia, Inc.
// SPDX-License-Identifier: Apache-2.0
import Combine
struct Price {
let amount: String // "$42"
let description: String // "avg/night"
}
@karigrooms
karigrooms / swiftui-uicollectionviewcell-with-uibutton.swift
Created February 24, 2021 00:46
Blog post: SwiftUI with UICollectionView - 17. UIButton positioned on top of the SwiftUI View
import SwiftUI
import UIKit
class MyCollectionViewCell: SwiftUICollectionViewCell<Card> {
static var reuseIdentifier = "MyCollectionViewCell"
typealias Content = Card.Content
lazy var heartButton: UIHeartButton = {
@karigrooms
karigrooms / swiftui-uicollectionview-4.swift
Last active February 24, 2021 00:45
Blog post: SwiftUI with UICollectionView - 16. Present the property details when a property card is tapped
// MARK: UICollectionViewDelegate
extension CollectionViewExample: UICollectionViewDelegate {
func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
let item = items[indexPath.row]
let pdp = PropertyDetailsViewController(property: item)
pdp.modalPresentationStyle = .formSheet
present(pdp, animated: true)
}
@karigrooms
karigrooms / swiftui-card-view-with-environmentobject.swift
Created February 24, 2021 00:21
Blog post: SwiftUI with UICollectionView - 15. Use @EnvironementObject instead of @State when embedding SwiftUI Views inside of UICollectionViewCell
// MARK: Card
protocol CardContent {
var id: String { get }
var imageName: String { get }
var title: String { get }
var description: String { get }
}
struct Card: View {
@karigrooms
karigrooms / swiftui-card-view-with-state.swift
Created February 24, 2021 00:10
Blog post: SwiftUI with UICollectionView - 14. Do not use @State inside of a SwiftUI View embedded in a UICollectionViewCell
import SwiftUI
struct Card: View {
typealias Content = CardContent
let content: Content
@State var isHearted: Bool = false
@karigrooms
karigrooms / swiftui-card-view-final.swift
Created February 23, 2021 23:50
Blog post: SwiftUI with UICollectionView - 13. Add Spacer() to vertically align to the top of its container
import SwiftUI
protocol CardContent {
var imageName: String { get }
var title: String { get }
var description: String { get }
}
struct Card: View {
@karigrooms
karigrooms / swiftui-card-view-3.swift
Created February 23, 2021 23:46
Blog post: SwiftUI with UICollectionView - 12. Update SwiftUI Card to adapt to its container size
import SwiftUI
protocol CardContent {
var imageName: String { get }
var title: String { get }
var description: String { get }
}
struct Card: View {
@karigrooms
karigrooms / swiftui-uicollectionview-3.swift
Last active February 24, 2021 00:45
Blog post: SwiftUI with UICollectionView - 11. Sizing our cell via UICollectionViewDelegateFlowLayout
// MARK: UICollectionViewDelegateFlowLayout
extension CollectionViewExample: UICollectionViewDelegateFlowLayout {
func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
return CGSize(width: 240, height: 320)
}
}
@karigrooms
karigrooms / swiftui-uicollectionviewcell-4.swift
Created February 23, 2021 20:18
Blog post: SwiftUI with UICollectionView - 10. Update our cell to subclass SwiftUICollectionViewCell
import SwiftUI
import UIKit
class MyCollectionViewCell: SwiftUICollectionViewCell<Card> {
static var reuseIdentifier = "MyCollectionViewCell"
typealias Content = Card.Content
func configure(with content: Content, parent: UIViewController) {
@karigrooms
karigrooms / swiftuicollectionviewcell.swift
Created February 23, 2021 20:09
Blog post: SwiftUI with UICollectionView - 9. Subclass for embedding a SwiftUI View inside of UICollectionViewCell
import SwiftUI
import UIKit
/// Subclass for embedding a SwiftUI View inside of UICollectionViewCell
/// Usage: `class MySwiftUICell: SwiftUICollectionViewCell<Card> { ... }`
open class SwiftUICollectionViewCell<Content>: UICollectionViewCell where Content: View {
/// Controller to host the SwiftUI View
private(set) var host: UIHostingController<Content>?