App.js

import React from "react";
import { View } from "react-native";
import { connect } from "react-redux";

import ProgressOverlay from "react-native-progress-overlay";

const App = props => {
  return (
    <View>
      <ProgressOverlay visible={props.visible} text={props.text} />
    </View>
  );
};

const mapStateToProps = state => {
  return {
    visible: state.progress.visible,
    text: state.progress.text
  };
};

export default connect(mapStateToProps)(App);