Gain insights into building applications with React Native Expo. Learn essential development concepts to create career opportunities and enhance your skills using familiar web technologies.

final.tar.gz

React Native

firstapp

components

states

style

flex

sound

camera

forms

forms_bonus

forms_bonus-solution

navigation

stack_challenge_solution

drawer_navigation

effect

storage

todo

React Native-test

You’ll learn to build applications using React Native Expo. It’s an amazing technology for web developers to learn building apps using technologies they would already be familiar with. It would be an amazing opportunity for companies to train their developers on this instead of hiring new app developers. 

This course contains a complete package with the most commonly used concepts in application development. It would create a foundation for you to explore this technology further.

Taking this course would open doors to many opportunities out there to progress further in your career as application developer.

Building Applications with React Native

The `Edit` screen is used to edit the task items.

node_modules/
.expo/
dist/
npm-debug.*
*.jks
*.p8
*.p12
*.key
*.mobileprovision
*.orig.*
web-build/
package-lock.json

# macOS
.DS_Store


import { StatusBar } from "expo-status-bar";
import { StyleSheet, Text, View, LogBox } from "react-native";
import { NavigationContainer } from "@react-navigation/native";
import { createNativeStackNavigator } from "@react-navigation/native-stack";
import { NativeBaseProvider } from "native-base";
import Home from "./comps/Home.js";
import Edit from "./comps/Edit.js";
import New from "./comps/New.js";


export default function App() {
    const Stack = createNativeStackNavigator();
    LogBox.ignoreAllLogs();
    return (
        <NativeBaseProvider>
            <NavigationContainer>
                <Stack.Navigator
                    initialRouteName="Home"
                    screenOptions={{
                        title: "Todo List",
                        headerTitleAlign: "center",
                        headerStyle: {
                            backgroundColor: "#141E30",
                        },
                        headerTintColor: "#fff",
                    }}
                >
                    <Stack.Screen name="Home" component={Home} />
                    <Stack.Screen name="Edit" component={Edit} />
                    <Stack.Screen name="New" component={New} />
                </Stack.Navigator>
            </NavigationContainer>
        </NativeBaseProvider>
    );
}

const styles = StyleSheet.create({
    container: {
        flex: 1,
        backgroundColor: "#fff",
        alignItems: "center",
        justifyContent: "center",
    },
});


module.exports = function(api) {
  api.cache(true);
  return {
    presets: ['babel-preset-expo'],
  };
};


React

Dart

GoJS React

Typescript React

Vue.js

> **Note:** Once the server starts, click the URL next to “Your app can be found at:” to view the output.

# Code explanation
The `Edit` component is very similar to the `New` component. We’ll discuss the changes to be made.

## States

The `Edit` component has three states:
- `title`: The title of the item.
- `error`: The error message.
- `id`: The ID of the current item.

## The `useEffect` hook 
Unlike the `New` component, the `Edit` component fills the title with the previous data of the item.

First, we get the data from the `route.params`. Next, we set the `title` and `id` states.

## The `handleSubmit` function
The `handleSubmit` function is very similar to the `handleSubmit` function in the `New` component. The only difference is that we are using the `id` state to find the item to be edited. Then we update the title of the item within the list. Next, we store the new list in the `AsyncStorage`, using the `storeData` function. Finally, we navigate to the `Home` component.


Learn about the functionalities of the edit component. 

Welcome to the Course

Let's Get Started With React Native

Creating Our First Application

Handling Forms

Assessment on the Basics of React Native

Navigating Between Screens

Build a Music Player Application Using React Native

The useEffect Hook

Assessment on Navigating the Components and their Lifecycle

AsyncStorage

The Todo List Application

To-do List Assessment

Connecting To External API's

Assessment on APIs

State Management

Firebase

Password Manager

Final Quiz

Conclusion

The Edit Component

Code explanation