Login.jsx

import React, { Component } from "react";
import {
  View,
  Button
} from 'react-native';
import { connect } from 'react-redux';

import actionGenerators from "../../../redux/actionGenerators";

@connect(null, ({
    login: actionGenerators.auth.login.start
  }))
export default class Login extends Component {
  render() {
    return (
      <View>
        <Button title="LOGIN" onPress={this.props.login} />
      </View> 
    )
  }
}