Button.js

import React from 'react';
import {
  StyleSheet,
  Text,
  FlatList,
  View,
  Image,
  Button,
  ImageBackground,
  TouchableHighlight,
} from 'react-native';

const ThemedButton = (props) => {
  return (
    <View style={styles.container}>
      <TouchableHighlight
        style={[styles.button, props.style]}
        underlayColor="#f194ff"
        onPress={props.onPress}
      >
        <Text style={styles.text}>{props.title}</Text>
      </TouchableHighlight>
    </View>
  );
};

const styles = StyleSheet.create({
  container: {
    alignItems: 'center',
  },
  button: {
    padding: 10,
    alignSelf: 'center',
    paddingBottom: 10,
    backgroundColor: '#3C437D',
    borderRadius: 10,
    borderWidth: 1,
    borderColor: '#fff',
    marginTop: 20,
    marginBottom: 10,
    minWidth: '75%',
  },
  text: {
    color: '#fff',
    textAlign: 'center',
    fontWeight: '600',
    paddingLeft: 10,
    fontSize: 17,
    paddingRight: 10,
  },
});

export default ThemedButton;