SwiftUI onChange Event Count Characters input

SwiftUI onChange Event Count Characters input

ContentView.swift

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// //  ContentView.swift //  SwiftUIProject // //  Created by Cairocoders //   import SwiftUI   struct ContentView: View {    @State private var text: String = ""    @State private var color: Color = Color.indigo    @State private var count: Int = 0         var body: some View {       ZStack {          HStack {             TextField("Enter Text", text: $text)                .onChange(of: text) { text in                   let letters = text.trimmingCharacters(in: .whitespaces).count                   self.count = letters                                       switch letters {                   case 1..<10:                      self.color = .red                   case 10..<20:                       self.color = .blue                   case 20...:                      self.color = .green                   default:                       self.color = .indigo                   }                }                .foregroundColor(color)                                         Text("\(count)")                .bold()                .foregroundColor(.gray)          }          .padding()          .overlay(             RoundedRectangle(cornerRadius: 30)             .stroke(color, lineWidth: 5)          )          .padding()       }    } }   struct ContentView_Previews: PreviewProvider {     static var previews: some View {         ContentView()     } }