mattyoung

struct KeyboardAvoidance: View {
    @State var text = ""

    var body: some View {
        VStack {
            // Only work if something is added below the list
            TextField("Enter", text: $text)
            List {
                ForEach(1...50, id: \.self) {
                    Text("More \($0)")

mattyoung

import SwiftUI

struct RedactedReasonReplaceIsPlaceholder: View {
    @Environment(\.redactionReasons) private var redactionReason
    let junk: RedactionReasons = .placeholder

    var body: some View {
        VStack {
            Text("Want this to be shown even when redacted!")
                .redacted(reason: .init())

mattyoung

import SwiftUI


struct AnimateForever: View {
    @State private var flag = false

    var body: some View {
        VStack {
            Rectangle()
                // on rectangle, foregroundColor() animate

mattyoung

//
// !!! SwiftUI 3: use .foregroundStyle()! Much simplified
//

import SwiftUI
import os

let logger = Logger(subsystem: "net.hddigitalworks.TextColorAnimate", category: "color")

mattyoung

struct User: Equatable {
    var firstName: String
    var lastName: String
}

@main
struct MyApp: App {
    @State var value = User(firstName: "", lastName: "")
    @State var showEdit = false

mattyoung

//
//  TextLabelViewForSeanHeber.swift
//  NewWorld12
//
//  Created by Matthew on 8/1/20.
//

// https://twitter.com/BigZaphod/status/1289674767684046848

import SwiftUI

mattyoung

import SwiftUI

// this demonstrate preference/onPreferenceChange propagate size value
// to set View size do not work. The value is propagated out as can be
// verified by seeing the print() output from closure of .onPreferenceChange()
// but size value is not reflected inside makeBody()
struct CircleProgressViewStyle: ProgressViewStyle, PreferenceKey {
    static var defaultValue: CGFloat = 0
    static func reduce(value: inout CGFloat, nextValue: () -> CGFloat) {
        value = nextValue()

mattyoung

import SwiftUI

struct ContentView: View {
    let orientationNotification = NotificationCenter.default
        .publisher(for: UIDevice.orientationDidChangeNotification)
        .map { _ in
            UIDevice.current.orientation
        }

    // .onReceive() mutate this @State var to trigger re-render on orientation change

mattyoung

import SwiftUI


struct ContentView: View {
    var body: some View {
        NavigationView {
            VStack {
                // accessiblity works normally
                VStack {
                    Text("NavigationLink accessiblilty is fine when not .combine")

mattyoung

import SwiftUI

struct ContentView: View {
    @State var value = -122.90
    let range = -300.0...300

    var body: some View {
        VStack {
            #warning("`alignment: .firstTextBaseline`, cause the Text inside Label is elided sometime")
            HStack(alignment: .firstTextBaseline) {