Nativify

Setting Up Your Environment

Make sure you have Node.js and npm installed. You can create a new React Native project using Expo:

1. Install Expo CLI if you haven’t already:bashCopy codenpm install -g expo-cli
2. Create a new project:bashCopy codeexpo init nativify-app cd nativify-app
3. Choose a blank template when prompted.

Step 2: Create Basic Components

We’ll create two main components: ItemList and AddItem.

1. Create ItemList.js

In the components folder (create it if it doesn’t exist), create a new file called ItemList.js:

jsxCopy code// components/ItemList.js
import React from 'react';
import { View, Text, FlatList, StyleSheet } from 'react-native';

const ItemList = ({ items }) => {
  return (
    <FlatList
      data={items}
      keyExtractor={(item, index) => index.toString()}
      renderItem={({ item }) => (
        <View style={styles.itemContainer}>
          <Text style={styles.itemText}>{item}</Text>
        </View>
      )}
    />
  );
};

const styles = StyleSheet.create({
  itemContainer: {
    padding: 15,
    borderBottomWidth: 1,
    borderBottomColor: '#ccc',
  },
  itemText: {
    fontSize: 18,
  },
});

export default ItemList;

2. Create AddItem.js

Now create another file called AddItem.js:

jsxCopy code// components/AddItem.js
import React, { useState } from 'react';
import { View, TextInput, Button, StyleSheet } from 'react-native';

const AddItem = ({ onAdd }) => {
  const [inputValue, setInputValue] = useState('');

  const handleSubmit = () => {
    if (inputValue) {
      onAdd(inputValue);
      setInputValue('');
    }
  };

  return (
    <View style={styles.container}>
      <TextInput
        style={styles.input}
        placeholder="Add new item"
        value={inputValue}
        onChangeText={setInputValue}
      />
      <Button title="Add" onPress={handleSubmit} />
    </View>
  );
};

const styles = StyleSheet.create({
  container: {
    flexDirection: 'row',
    marginVertical: 20,
  },
  input: {
    borderWidth: 1,
    borderColor: '#ccc',
    flex: 1,
    padding: 10,
    marginRight: 10,
  },
});

export default AddItem;

Step 3: Main Application Component

Now, let’s integrate everything in App.js.

jsxCopy code// App.js
import React, { useState } from 'react';
import { View, Text, StyleSheet } from 'react-native';
import ItemList from './components/ItemList';
import AddItem from './components/AddItem';

const App = () => {
  const [items, setItems] = useState([]);

  const addItem = (item) => {
    setItems([...items, item]);
  };

  return (
    <View style={styles.container}>
      <Text style={styles.title}>Nativify Item List</Text>
      <AddItem onAdd={addItem} />
      <ItemList items={items} />
    </View>
  );
};

const styles = StyleSheet.create({
  container: {
    flex: 1,
    padding: 20,
    backgroundColor: '#fff',
  },
  title: {
    fontSize: 24,
    fontWeight: 'bold',
    marginBottom: 20,
  },
});

export default App;

Step 4: Run Your Application

Start your application using:

bashCopy codeexpo start

This command will open a new tab in your browser, allowing you to run the app on an emulator or your physical device using the Expo Go app.

Summary

In this tutorial, you created a simple React Native app that allows users to add items to a list. You learned how to manage state and create reusable components in React Native.

You can enhance the application by adding features like:

• Removing items
• Editing items
• Storing data with AsyncStorage