Firebase blog application with react native

Step 1 : In this step we will set up firebase

Click on Add project

Enter a project name

Disable / enable google analytics based on your requirement and click on “Create Project”

Click on Web icon

Register the application , copy and store the code somewhere and move forward with the app

Now go to authentication tab and click on Get Started

Select Email/password as provider

Go to firestore database and click on create database

Start in production -> Next -> Move forward

Start a collection

Collection should look like this

Now start an expo app.

Run -> expo init firebaseblog

Required packages -> firebase , @react-navigation/native , @react-navigation/native-stack .

Create a folder name it Component and create new files Card.js , Createpost.js , Home.js , Login.js .

Card.js

import { View, Text, StyleSheet } from 'react-native';
import React from 'react';
export default function Card({title,authorName,description}) {
return (
<View style={styles.card_container}>
<View style={styles.upperhalf}>
<Text style={{fontSize:22}}>
{title}
</Text>
<Text style={{fontSize:22}}>
X
</Text>
</View>
<View style={styles.lowerhalf}>
<Text>
{description}
</Text>
<Text>
{`@ ${authorName}`}
</Text>
</View>
</View>
);
}
const styles = StyleSheet.create({
card_container:{
backgroundColor:'#23C4ED',
margin:5,
borderRadius:10,
},
upperhalf:{
flex:1,
flexDirection:'row',
justifyContent:'space-between',
marginHorizontal:5,
},
lowerhalf:{
backgroundColor:'#fff',
margin:2,
borderRadius:10,
}
})

Createpost.js

import { View ,TextInput, StyleSheet, Button} from 'react-native';
import React, { useState } from 'react';
import { addDoc, collection } from 'firebase/firestore';
import { auth, db } from '../firebase';
export default function Createpost({navigation}) {
const[posttitle,setPosttitle] = useState()
const[description,setdescription] = useState()
const postref = collection(db,"posts")
const addpost = async()=>{
await addDoc(postref,{title:posttitle,description:description,authorName:auth.currentUser.email})
alert('post added')
navigation.navigate('Home')
}
return (
<View style={styles.textareacontainer}>
<TextInput style={styles.texttitle} value={posttitle} onChangeText={(posttext)=>setPosttitle(posttext)} placeholder='Enter title'/>
<TextInput style={styles.textdescription} value={description} onChangeText={(postdesc)=>setdescription(postdesc)} placeholder='Enter description'/>
<View style={styles.submitbutton}>
<Button title='Submit Post' onPress={addpost}/>
</View>
</View>
);
}
const styles = StyleSheet.create({
textareacontainer:{
justifyContent:'center',
backgroundColor:'#fff',
padding:10
},
texttitle:{
marginTop:50,
padding:20,
borderWidth:2,
borderColor:'#FF6666',
borderRadius:20
}
,
textdescription:{
height:150,
marginTop:12,
borderWidth:2,
borderColor:'#FF6666',
borderRadius:20,
padding:10
},
submitbutton:{
marginTop:15
}
})

Home.js

import { View, Text,StyleSheet,SafeAreaView,ScrollView, Button } from 'react-native';
import React, { useEffect, useState } from 'react';
import Card from './Card';
import { collection, doc, getDocs } from 'firebase/firestore';
import { db } from '../firebase';
export default function Home({navigation}) {
const [blogpost,setBlog] = useState([])
const postref = collection(db,"posts")
useEffect(()=>{
const getPost=async()=>{
const querySnapshot = await getDocs(postref);
setBlog(querySnapshot.docs.map((doc)=>({...doc.data(),id:doc.id})))
}
getPost()
})
return (
<SafeAreaView style={styles.container}>
<Button title='Add A Post' onPress={()=>navigation.navigate('Createpost')}/>
<ScrollView>
{
blogpost.map((post)=>(<Card title={post.title} authorName={post.authorName} description={post.description}/>))
}
</ScrollView>
</SafeAreaView>
);
}
const styles = StyleSheet.create({
container: {
flex: 1,
backgroundColor: '#fff',
}
});

Login.js

import { View, Text ,KeyboardAvoidingView,TextInput,StyleSheet,TouchableOpacity} from 'react-native';
import React, { useState } from 'react';
import { createUserWithEmailAndPassword, signInWithEmailAndPassword } from 'firebase/auth';
import { auth } from '../firebase';
export default function Login({navigation}) {
const [email,setEmail] = useState()
const [password,setPassword] = useState()
const handleRegister = ()=>{
createUserWithEmailAndPassword(auth,email,password).then((userCredential)=>{
const user = userCredential.user;
alert(`Welcome ${user.email}`)
navigation.navigate('Home')
}).catch((error)=>alert(error.message))
}
const handleSignIn = ()=>{
signInWithEmailAndPassword(auth,email,password).then((userCredential)=>{
const user = userCredential.user;
alert(`Welcome back ${user.email}`)
navigation.navigate('Home')
}).catch((error)=>alert(error.message))
}
return (
<KeyboardAvoidingView behavior='padding' style={styles.container}>
<View style={styles.inputContainer}>
<TextInput style={styles.input} value={email} onChangeText={(text)=>setEmail(text)} placeholder='Enter email'/>
<TextInput style={styles.input} value={password} onChangeText={(text)=>setPassword(text)} placeholder='Enter password' secureTextEntry/>
</View>
<View style={styles.buttonContainer}>
<TouchableOpacity style={styles.buttons} onPress={handleSignIn}>
<Text style={{alignSelf:'center',color:'white'}}>Login</Text>
</TouchableOpacity>
<TouchableOpacity style={styles.buttons} onPress={handleRegister}>
<Text style={{alignSelf:'center',color:'white'}}>Register</Text>
</TouchableOpacity>
</View>
</KeyboardAvoidingView>
);
}
const styles = StyleSheet.create({
container:{
alignItems:'center',
justifyContent:'center',
flex:1
},
buttonContainer:{
width:'60%',
alignItems:'center',
justifyContent:'center',
marginTop:30,
},
buttons:{
backgroundColor:'#0782F9',
padding:10,
borderRadius:10,
width:'100%',
marginTop:5
},
inputContainer:{
width:"80%"
},
input:{
backgroundColor:'white',
paddingHorizontal:15,
paddingVertical:10,
borderRadius:10,
marginTop:5
}
})

App.js

import { NavigationContainer, NavigationRouteContext, useNavigation } from '@react-navigation/native';
import { createNativeStackNavigator } from '@react-navigation/native-stack';
import { StyleSheet, Text, View  ,Button} from 'react-native';
import Createpost from './Components/Createpost';
import Home from './Components/Home';
import Login from './Components/Login';
const Stack = createNativeStackNavigator()
export default function App() {
return (
<NavigationContainer>
<Stack.Navigator>
<Stack.Screen name='Login' options={{headerTitleAlign:'center'}} component={Login}/>
<Stack.Screen name='Home' component={Home} options={({navigation})=>({
title:'Home',
headerTitleAlign:'center',
headerTitleStyle:{
color:'#120E43'
},
headerStyle:{
backgroundColor:'#51E1ED',
headerTitleAlign:'center'
},
headerRight:()=>(
<Button
title='Logout'
onPress={()=>navigation.navigate('Login')}
/>
),
headerLeft:()=>(<Text></Text>)
})}/>
<Stack.Screen name='Createpost' component={Createpost}/>
</Stack.Navigator>
</NavigationContainer>
);
}

Run -> expo start

Result :

Code : 49paunilay/Fireblog-React-Native: Fireblog React Native (github.com)