react-native-halloween-fadein2.js

class StartPage extends Component {
  render() {
    return (
      <FadeIn>
        <TouchableHighlight onPress={() => this.props.handlePage("main")}>
          <Text style={styles.text}>Go to the MainPage</Text>
        </TouchableHighlight>
      </FadeIn>
    );
  }
}

class MainPage extends Component {
  render() {
    return (
      <FadeIn>
        <TouchableHighlight onPress={() => this.props.handlePage("start")}>
          <Text style={styles.text}>Go to the StartPage</Text>
        </TouchableHighlight>
      </FadeIn>
    );
  }
}