HomeScreen.js

import React from 'react'
import { View, Text, Button } from 'react-native'
import { connect } from 'react-redux'
import { dummyAction } from '../actions/dummyAction'

class HomeScreen extends React.Component {
    render() {
      return (
        <View style={{ flex: 1, alignItems: 'center', justifyContent: 'center' }}>
          <Text>Home Screen</Text>
          <Button
            title="Go to Details"
            onPress={() => {
              this.props.dispatch(dummyAction('John Doe'))
              this.props.navigation.navigate('Details') 
            }}
          />
        </View>
      );
    }  
}

export default connect(({dispatch}) => ({dispatch}))(HomeScreen)