Discover all the tech
Issue #715
I remember this time last year in December 2019, I spent almost every single bit of my free time on Puma because I want a Swift friendly version of fastlane that suits my need and leverages Swift 5 features.
Here’s my review of my …
Issue #856
Use PKPaymentRequest and PKPaymentAuthorizationViewController
@MainActor
final class WalletViewModel: NSObject, ObservableObject {
var canMakePayments: Bool {
PKPaymentAuthorizationViewController.canMakePayments()
} …Issue #855
Use CoreImage to generate QR image
import SwiftUI
import CoreImage.CIFilterBuiltins
struct QRView: View {
let qrCode: String
@State private var image: UIImage?
var body: some View {
ZStack {
if let image = …Issue #854
If you use enum case as key in Dictionary, JSONEncoder will encode it as Array. For example
enum Vehicle: String, Codable {
case car
case truck
}
struct Container: Codable {
var map: [Vehicle: String]
}
struct Container2: …Issue #853
With ButtonStyle, the disabled modifier does not seem to work, we need to use allowsHitTesting.
import SwiftUI
struct ActionButtonStyle: ButtonStyle {
func makeBody(configuration: Configuration) -> some View {
HStack { …Issue #852
Supposed we have Book object
struct Book: Identifiable, Codable, Hashable {
@DocumentID var id: String?
}
We should use FieldPath instead of id for query
let booksRef: CollectionReference = ...
let ids: [String] = ...
booksRef
. …Issue #851
Use DefaultValue to provide defaultValue in our property wrapper DefaultCodable
public protocol DefaultValue {
associatedtype Value: Codable
static var defaultValue: Value { get }
}
public enum DefaultBy {
public enum True: …Issue #850
Erase with AnyShape
struct AnyShape: Shape {
init<S: Shape>(_ wrapped: S) {
innerPath = { rect in
let path = wrapped.path(in: rect)
return path
}
}
func path(in rect: CGRect) -> …Issue #849
We need to explicitly specify optional in tag
extension AVCaptureDevice: Identifiable {
public var id: String { uniqueID }
}
@State var device: AVCaptureDevice?
Picker("Camera", selection: $device) {
ForEach(manager. …Issue #848
Hold a weak reference to NSWindow, and let system window server manages its lifetime
weak var window = NSWindow()
window.isReleasedWhenClosed = true
Issue #847
We should use Dynamic Font Type as much as possible, as per Typography guide and https://www.iosfontsizes.com/
But in case we have to use a specific font, we can scale it with UIFontMetrics
import SwiftUI
import UIKit
extension Font { …Issue #846
We use UIBezierPath with addArc to draw specific corner with different rounding values.
import SwiftUI
extension View {
func clipCorners(
topLeft: CGFloat = 0,
bottomLeft: CGFloat = 0,
topRight: CGFloat = 0, …Issue #845
Suppose we have struct Payment as the state, we declare custom Binding<String> that derives from our state.
struct Payment {
var amount: Int = 0
}
To show our suffix view, we use .fixedSize(horizontal: true, vertical: false) to …
Issue #844
Use custom Binding and validate the text. In case of zero, return empty string to let TextField display placeholder
var textField: some View {
let text = Binding<String>(
get: {
state.amount > 0 ? "$\( …Issue #843
This can be used in message bar input or some popover form. We use sizeThatFits to calculate the height so that it grow under certain height limit
import SwiftUI
import UIKit
struct MessageTextField: View {
let placeholder: String …Issue #842
Declare EnvironmentKey and read safeAreaInsets from key window in connectedScenes
struct SafeAreaInsetsKey: EnvironmentKey {
static var defaultValue: EdgeInsets {
UIApplication.shared.keyWindow?.safeAreaInsets.swiftUIInsets ?? …Issue #841
Declare generic on RawRepresentable
import SwiftUI
struct TabStrip<T: RawRepresentable & Hashable>: View where T.RawValue == String {
let values: [T]
@Binding var selected: T
var body: some View {
ScrollView …Issue #840
Used to replace credit card regex 30[0-5]#-######-###L in EasyFake
We can use ? to have non-greedy behavior, or I here use square bracket to fine-tune the expression \{[\d*,]*\d*\}
Also, I need to reversed the matches because each …
Issue #839
Use locales data from faker.js to https://github.com/onmyway133/EasyFake, renaming files since files, regardless of sub directories in Xcode, must have different name.
We use enumerator API on FileManager to traverse all files in all …
Issue #838
We can write our custom Binding
import SwiftUI
extension Binding where Value == Date? {
func flatten(defaultValue: Date) -> Binding<Date> {
Binding<Date>(
get: { wrappedValue ?? defaultValue }, …Issue #837
I usually use GeometryReader in background to get size of view, and encapsulate it inside a ViewModifier
struct GetHeightModifier: ViewModifier {
@Binding var height: CGFloat
func body(content: Content) -> some View { …I’m a thinker and storyteller with a passion for exploring the intersection of creativity and technology
🧑💻 I love crafting high quality and useful apps
🔥 I love open source. My GitHub open source has 2.3k followers with packages that are integrated by 45k+ apps and over 3.4m+ downloads on CocoaPods.
✍️ I write here on my blog and on Medium, which has over 2.7k+ followers with tons of articles and 90k+ monthly views.
🖥 Follow me for sharings about Swift, SwiftUI, iOS and macOS development.