ContentView.swift
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 | //// ContentView.swift// swiftuidev15ios//// Created by Cairocoders//import SwiftUIstruct ContentView: View { @State private var username = "" @State private var password = "" @State private var wrongUsername: Float = 0 @State private var wrongPassword: Float = 0 @State private var showingLoginScreen = false var body: some View { NavigationView { ZStack { Color.orange .ignoresSafeArea() Circle() .scale(1.9) .foregroundColor(.white.opacity(0.29)) Circle() .scale(1.7) .foregroundColor(.white) VStack { Text("Login") .font(.largeTitle) .bold() .padding() TextField("Username", text: $username) .padding() .frame(width: 300, height: 50) .background(Color.black.opacity(0.05)) .cornerRadius(10) .border(.red, width: CGFloat(wrongUsername)) SecureField("Password", text: $password) .padding() .frame(width: 300, height: 50) .background(Color.black.opacity(0.05)) .cornerRadius(10) .border(.red, width: CGFloat(wrongPassword)) Button("Login") { authenticateUser(username: username, password: password) } .foregroundColor(.white) .frame(width: 300, height: 50) .background(Color.orange) .cornerRadius(10) NavigationLink(destination: Text("You are logged in @\(username)"), isActive: $showingLoginScreen) { EmptyView() } } }.navigationBarHidden(true) } } func authenticateUser(username: String, password: String) { if username.lowercased() == "cairocoders" { wrongUsername = 0 if password.lowercased() == "123456" { wrongPassword = 0 showingLoginScreen = true } else { wrongPassword = 2 } } else { wrongUsername = 2 } }}struct ContentView_Previews: PreviewProvider { static var previews: some View { ContentView() }} |
