SwiftUI4RN-State

State.jsx

import React, { Component } from 'react';
import { AppRegistry, Text, View } from 'react-native';

class Blink extends Component {

    componentDidMount(){
    // Toggle the state every second
        setInterval(() => (
          this.setState(previousState => (
            { isShowingText: !previousState.isShowingText }
          ))
        ), 1000);
     }

    //state object
    state = { isShowingText: true };

  render() {
    if (!this.state.isShowingText) {
      return null;
    }

    return (
      <Text>{this.props.text}</Text>
    );
  }
}

export default class BlinkApp extends Component {
  render() {
    return (
      <View>
        <Blink text='I love to blink' />
        <Blink text='Yes blinking is so great' />
        <Blink text='Why did they ever take this out of HTML' />
        <Blink text='Look at me look at me look at me' />
      </View>
    );
  }
}

State.swift

import UIKit
import SwiftUI
import PlaygroundSupport

// https://facebook.github.io/react-native/docs/state

struct Blink: View {
    
    @State var isShowingText: Bool = true
    
    var body: some View {
        Group {
            Spacer()
            Toggle(isOn: $isShowingText) {
                Text("Show Text")
            }
            Spacer()
            
            (self.isShowingText)
                ? Text("I love to toggle")
                : nil
            (self.isShowingText)
                ? Text("Yes blinking is so great")
                : nil
            (self.isShowingText)
                ? Text("Why did they ever take this out of Swift")
                : nil
            (self.isShowingText)
                ? Text("Look at me look at me look at me")
                : nil
            Spacer()
        }
        
    }
}

PlaygroundPage.current.liveView = UIHostingController(rootView: Blink())