lrlineroa

import React, { Component } from 'react';
import { View, Text } from 'react-native';
import { Card, CardItem, Button, Item, Label, Input } from 'native-base';
class AddACard extends Component {
    constructor(props) {
        super(props);
        this.state = {
            cardValue: '',//<--- Nuevo
            cards: [] //<--- Nuevo
        }

lrlineroa

import React, { Component } from 'react';
import { View, Text } from 'react-native';
import { Card, CardItem, Button, Item, Label, Input } from 'native-base';
class AddACard extends Component {
    constructor(props) {
        super(props);
        this.state = {
            cardValue: '',
            cards: []
        }

lrlineroa

import React, { Component } from 'react';
import { View,Text } from 'react-native';

class Training extends Component {
    constructor(props) {
        super(props);
        this.state = {  }
    }
    render() { 
        return ( <View>

lrlineroa

import { createStackNavigator, createAppContainer } from "react-navigation";
import AddACard from "./src/components/UI/AddACard";
import Training from "./src/components/UI/Training";

const AppNavigator = createStackNavigator({
  AddACard: {
    screen: AddACard
  },
  Training :{
      screen:Training

lrlineroa

import React from 'react';
import { StyleSheet, View } from 'react-native';

import Router from './Router';//<-- se añade esta importación

export default function App() {
  return (
    <Router/> //<se llama el Router
  );
}

lrlineroa

import React, { Component } from 'react';
import { View, Text } from 'react-native';
import { Card, CardItem, Button, Item, Label, Input } from 'native-base';
class AddACard extends Component {
    constructor(props) {
        super(props);
        this.state = {
            cardValue: '',
            cards: []
        }

lrlineroa

import React, { Component } from 'react';
import { View, Text } from 'react-native';
import { Card, CardItem, Button, Item, Label, Input } from 'native-base';
class AddACard extends Component {
    constructor(props) {
        super(props);
        this.state = {
            cardValue: '',
            cards: []
        }

lrlineroa

import React, { Component } from 'react';
import { View, Text } from 'react-native';
import { Card, CardItem, Button } from 'native-base';

class Training extends Component {
    //nuevo
    static navigationOptions = ({ navigation }) => {
        return {
            title: 'Repaso'
        }

lrlineroa

const mongoose = require('mongoose')
const Schema = mongoose.Schema;

const categorySchema=new Schema({
    name: String,
    icon: {
        name: String,
        type: String
    }
})

lrlineroa

var express = require('express');
var router = express.Router();
const Category = require('../models/category')
//index and form to create
router.get('/', async function (req, res, next) {
    console.log('index')
    categories = await Category.find();
    res.render('categories/index', { title: 'Tarjeta APP', categories: categories , query:req.query });
});
//create