App.js

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

class Blink extends Component {
  constructor(props) {
    super(props);
    this.state = {isShowingText: true};

    setInterval(() => {
      this.setState(previousState => {
        return { isShowingText: !previousState.isShowingText };
      });
    }, 1000);
  }

  render() {
    let display = this.state.isShowingText ? this.props.text : '  ';
    return (
      <Text>{display}</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='aaaaaaaaaa' />
      </View>
    );
  }
}

AppRegistry.registerComponent('react-native-turorial', () => BlinkApp);