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Trying to come out with a filter function for my app. Render Error: Too many re-renders. React limits the number of renders

The idea I have for this to work is to copy my main array from firebase (Array with all my info) into a temporary array. Then I will filter this temporary array and have it displayed in flatlist. The onPress for the buttons serves to select the type of information to be filtered (Eg type 1 or 2 or 3).
import React, { useState, setState, useEffect } from 'react';
import { View, Text, StyleSheet, ImageBackground, FlatList, Button, TouchableHighlight } from 'react-native'
import Card from '../components/Card';
import colors from '../config/colors';
import {MaterialCommunityIcons} from '#expo/vector-icons'
import { useNavigation } from '#react-navigation/core';
import AppButton from '../components/AppButton'
import { SearchBar } from 'react-native-screens';
import { Firestore, getDoc, collection, getDocs,
addDoc, deleteDoc, doc,
query, where, onSnapshot
} from 'firebase/firestore';
import {db} from '../../firebase';
import { async } from '#firebase/util';
//run: 1
//swim: 2
//cycle: 3
function EventsPage(props) {
const [events, setEvents] = useState([]);
const [bool, setBool] = useState(false);
const [arr, setArr] = useState([])
const colRef = collection(db, 'events');
const q = query(colRef, where('type', '>=', 0))
onSnapshot(q, (snapshot) => {
const events = []
snapshot.docs.forEach((doc) => {
events.push({...doc.data()}) //put the data into an array
})
if (bool === false) {
setEvents(events);
setBool(true)
}
})
const updateSearch = search => {
setArr({ search }, () => {
if (type == search) {
setArr({
data: [...arr.temp]
});
return;
}
arr.data = arr.temp.filter(function(item){
return item.name.includes(search);
}).map(function({date, subTitle, title, type}){
return {date, subTitle, title, type};
});
});
};
return (
<View style = {styles.container}>
<ImageBackground
source = {require('../assets/splash-page.jpg')}
style = {{width: '100%', height: '100%'}}
blurRadius={8}
>
<View style = {styles.backIcon}>
<MaterialCommunityIcons name='arrow-left-bold' color="black" size={35} onPress={() => {
navigation.replace("Connect_me")
}} />
</View>
<Text style = {styles.text}>EVENTS</Text>
<View style = {styles.buttons}>
<Button title={'All'} />
<Button title={'Run'} onPress = {updateSearch(1)}/>
<Button title={'Swim'} onPress = {updateSearch(2)}/>
<Button title={'Cycle'} onPress = {updateSearch(3)}/>
</View>
<FlatList
data={arr.data}
renderItem={({ item }) => (
<View style = {styles.cardContainer}>
<Card title={item.title} subTitle = {item.subTitle}/>
</View>
)}
/>
<Text></Text>
<Text></Text>
<Text></Text>
<Text></Text>
<Text></Text>
</ImageBackground>
</View>
// trolling
);
}
const styles = StyleSheet.create({
text: {
fontSize: 80,
textAlign:'center',
paddingBottom: 20,
color: colors.primary,
fontWeight: 'bold',
},
container: {
backgroundColor: 'white',
},
cardContainer: {
width: '95%',
alignSelf: 'center'
},
backIcon: {
paddingLeft: 10,
paddingTop: 30,
},
searchIcon: {
paddingLeft: 10,
paddingTop: 15,
position: 'relative',
left: 330,
bottom: 47
},
buttons: {
flexDirection: 'row',
padding: 20,
}
})
export default EventsPage;

Side effects code like listening to data change events should be handled inside the useEffect hook.
The app continues to listen to data change events for each component re-render which causes an infinity loop.
useEffect(() => {
const unsubscribe = onSnapshot(q, (snapshot) => {
const events = [];
snapshot.docs.forEach((doc) => {
events.push({ ...doc.data() }); //put the data into an array
});
if (bool === false) {
setEvents(events);
setBool(true);
}
});
// unsubscribe to data change events when component unmount
return () => {
unsubscribe();
};
}, []);

using Onclick, fetch api data in react native

I am new to React Native.
I am facing an issue with this view. Basically it is something like this when you click a button it generates any random number, now this random number becomes an id and it goes to at the end of the API url, And using this new API - with ID at the end of it. - data gets fetched. Now i've divided this task in two parts generating random number code (i.e. snippet 1) and fetching data from api ( i.e. snippet 2). As of now, I don't know how to combine them because i am new to react native so a little help here would be appreciated from anyone.
Snipppet 1
import { StyleSheet, View, Button, Text } from 'react-native';
export default class MyProject extends Component {
constructor(){
super();
this.state={
// This is our Default number value
NumberHolder : 0
}
}
GenerateRandomNumber=()=>
{
var RandomNumber = Math.floor(Math.random() * 5000) + 1 ;
this.setState({
NumberHolder : RandomNumber
})
}
render() {
return (
<View style={styles.MainContainer} >
<Text style={{marginBottom: 10, fontSize: 20}}>{this.state.NumberHolder}</Text>
<Button title="Generate Random Number" onPress={this.GenerateRandomNumber} />
</View>
);
}
}
const styles = StyleSheet.create(
{
MainContainer: {
flex: 1,
justifyContent: 'center',
alignItems: 'center',
}
});
Snippet 2
import React, { useState } from "react";
import { Box, FlatList, Center, NativeBaseProvider, Button } from "native-base";
import { StyleSheet, View, ActivityIndicator, Text, TouchableOpacity, Image } from 'react-native';
export default function MyFUnction() {
const [data, setData] = useState(null);
const [visible, setVisible] = useState(true);
const fetchData = async () => {
const resp = await fetch("https://jsonplaceholder.typicode.com/photos/7");
const data = await resp.json();
setData(data);
setVisible(false);
};
const renderItem = ({ item }) => {
return (
<TouchableOpacity style={styles.list}>
<Text>{item.title}</Text>
</TouchableOpacity>
);
};
return (
<NativeBaseProvider>
<Center flex={1}>
{visible && <Button onPress={() => fetchData()}>Press</Button>}
{data && (
<FlatList
data={data}
renderItem={(item) => this.renderItem(item)}
keyExtractor={(item) => item.id.toString()}
/>
)}
</Center>
</NativeBaseProvider>
);
}
const styles = StyleSheet.create({
list: {
paddingVertical: 4,
margin: 5,
backgroundColor: '#fff',
},
});
Thanks in advance!!

I think you must understand components clearly! React is component based! But your case is not 2 components! You have a component for fetching api and showing in list! Generating a random number is not a component, but it is a method(or function) in your list component! I think it is better to use one component for list and wrap a function to it for generating random number.
import React, { useState } from "react";
import { Box, FlatList, Center, NativeBaseProvider, Button } from "native-base";
import { StyleSheet, View, ActivityIndicator, Text, TouchableOpacity, Image } from 'react-native';
export default function MyFUnction() {
const [data, setData] = useState(null);
const [visible, setVisible] = useState(true);
const generatRandomNumber = () => {
return Math.floor(Math.random() * 5000) + 1
}
const fetchData = async () => {
const resp = await fetch(`https://jsonplaceholder.typicode.com/photos/${generatRandomNumber()}`);
const data = await resp.json();
setData(data);
setVisible(false);
};
const renderItem = ({ item }) => {
return (
<TouchableOpacity style={styles.list}>
<Text>{item.title}</Text>
</TouchableOpacity>
);
};
return (
<NativeBaseProvider>
<Center flex={1}>
{visible && <Button onPress={() => fetchData()}>Press</Button>}
{data && (
<FlatList
data={data}
renderItem={(item) => this.renderItem(item)}
keyExtractor={(item) => item.id.toString()}
/>
)}
</Center>
</NativeBaseProvider>
);
}
const styles = StyleSheet.create({
list: {
paddingVertical: 4,
margin: 5,
backgroundColor: '#fff',
},
});
But if you want to passing data between components you are have, it is not related to function or class component and you can pass data between them with props! So your code like this:
Random Number Component
import { StyleSheet, View, Button, Text } from 'react-native';
export default class MyProject extends Component {
constructor(props){ //edited
super(props); //edited
this.state={
// This is our Default number value
NumberHolder : 0
}
}
GenerateRandomNumber=()=>
{
var RandomNumber = Math.floor(Math.random() * 5000) + 1 ;
this.props.randomNumber(RandomNumber)
}
render() {
return (
<View style={styles.MainContainer} >
<Text style={{marginBottom: 10, fontSize: 20}}>{this.state.NumberHolder}</Text>
<Button title="Generate Random Number" onPress={this.GenerateRandomNumber} />
</View>
);
}
}
const styles = StyleSheet.create(
{
MainContainer: {
flex: 1,
justifyContent: 'center',
alignItems: 'center',
}
});
Your list component:
import React, { useState } from "react";
import { Box, FlatList, Center, NativeBaseProvider, Button } from "native-base";
import { StyleSheet, View, ActivityIndicator, Text, TouchableOpacity, Image } from 'react-native';
// import MyProject
export default function MyFUnction() {
const [data, setData] = useState(null);
const [visible, setVisible] = useState(true);
const [number, setNumber] = useState(null);
const fetchData = async () => {
const resp = await fetch(`https://jsonplaceholder.typicode.com/photos/${number}`);
const data = await resp.json();
setData(data);
setVisible(false);
};
const renderItem = ({ item }) => {
return (
<TouchableOpacity style={styles.list}>
<Text>{item.title}</Text>
</TouchableOpacity>
);
};
return (
<NativeBaseProvider>
<Center flex={1}>
<MyProject radomNumber={(number) => setNumber(number)}
{visible && <Button onPress={() => fetchData()}>Press</Button>}
{data && (
<FlatList
data={data}
renderItem={(item) => this.renderItem(item)}
keyExtractor={(item) => item.id.toString()}
/>
)}
</Center>
</NativeBaseProvider>
);
}
const styles = StyleSheet.create({
list: {
paddingVertical: 4,
margin: 5,
backgroundColor: '#fff',
},
});

thanks everyone for helping me.
here i am posting answer to my question, if anybody in future need an answer.
import React, { useEffect, useState, Component } from 'react';
import { StyleSheet, View, Button, FlatList, Text, Image } from 'react-native';
export default class MyProject extends Component {
constructor(){
super();
this.state={
// This is our Default number value
NumberHolder : 1,
books: []
}
}
GenerateRandomNumber=()=>
{
var RandomNumber = Math.floor(Math.random() * 5000) + 1;
fetch(`https://jsonplaceholder.typicode.com/photos/${RandomNumber}`)
.then((response) => response.json())
.then(booksList => {
this.setState({ books: booksList });
});
this.setState({
NumberHolder : RandomNumber
})
}
render() {
let Image_Http_URL ={ uri: 'https://reactnativecode.com/wp-content/uploads/2017/05/react_thumb_install.png'};
return (
<View style={styles.MainContainer} >
<Text style={{marginBottom: 10, fontSize: 20}}>{this.state.NumberHolder}</Text>
<Image
style={{width: '100%', height: 200,resizeMode : 'stretch' }}
source={{uri: this.state.books.url}}
/>
<Text style={{marginBottom: 10, fontSize: 12}}>{this.state.books.title}</Text>
<Text style={{marginBottom: 10, fontSize: 12}}>{this.state.books.url}</Text>
<Text style={{marginBottom: 10, fontSize: 12}}>{this.state.books.thumbnailUrl}</Text>
<Button title="Generate Random Number" onPress={this.GenerateRandomNumber} />
</View>
);
}
}
const styles = StyleSheet.create(
{
MainContainer: {
flex: 1,
justifyContent: 'center',
alignItems: 'center',
}
});

React Native: How to navigate to a page?

The below code is of Menu.js .I want to navigate to Settings.js by clicking on Settings .
I mentioned the code of Menu.js below.
Can I use the onPress to navigate to the next page wheni click on something?
I don't understand how to add this feature in the below code to the items.
import 'react-native-gesture-handler';
import React, { useState } from 'react';
import { Text, TextInput, View, StyleSheet ,TouchableOpacity,Image,Button,
ImageBackground,FlatList,StatusBar,SafeAreaView} from 'react-native';
const DATA = [
{
id: "bd7acbea-c1b1-46c2-aed5-3ad53abb28ba",
title: "Tasks Done",
},
{
id: "3ac68afc-c605-48d3-a4f8-fbd91aa97f63",
title: "Goals",
},
{
id: "58694a0f-3da1-471f-bd96-145571e29d72",
title: "Rank",
},
{
id: "58694a0f-3da1-471f-bd96-145571e29d74",
title: "Week Plan",
},
{
id: "58694a0f-3da1-471f-bd96-145571e29d73",
title: "Settings",
},
];
const Item = ({ item, onPress, style }) => (
<TouchableOpacity onPress={onPress} style={[styles.item, style]}>
<Text style={styles.title}>{item.title}</Text>
</TouchableOpacity>
);
const Menu = () => {
const [selectedId, setSelectedId] = useState(null);
const renderItem = ({ item }) => {
const backgroundColor = item.id === selectedId ? "#6e3b6e" : "#f9c2ff";
return (
<Item
item={item}
onPress={() => setSelectedId(item.id)}
style={{ backgroundColor }}
/>
);
};
return (
<SafeAreaView style={styles.container}>
<FlatList
data={DATA}
renderItem={renderItem}
keyExtractor={(item) => item.id}
extraData={selectedId}
/>
</SafeAreaView>
);
};
const styles = StyleSheet.create({
container: {
flex: 1,
marginTop: StatusBar.currentHeight || 0,
},
item: {
padding: 20,
marginVertical: 8,
marginHorizontal: 16,
},
title: {
fontSize: 25,
},
});
export default Menu;
I want to navigate to Settings.js as soon as I click on settings .
But I don't want to lose existing function of color changing .
How do I do this??

First of all, it is worth looking at the official docs here: https://reactnative.dev/docs/navigation
Official docs recommend react navigation, have a look at react navigation: https://reactnavigation.org/
Integrate this navigation in your project, once you have this you'd be able to user the navigation.navigate(nameOfYourView).

React native app stuck on white screen without any errors

I am learning React native and was trying to build an app. However, the app is stuck on a white screen and doesn't show anything nor gives any error. This code is going to render a flatlist from an array and will have a delete to swipe button on the right. I am not getting any errors though.
Message.js
import React, { useState } from 'react'
import {
View,
Text,
StyleSheet,
FlatList,
SafeAreaView,
StatusBar,
ItemSeparatorComponent,
Platform
} from 'react-native'
import ListItem from '../components/ListItem'
import ListItemSeparator from '../components/ListItemSeparator'
import DeleteSwipe from '../components/DeleteSwipe'
const messages = [
{
id: 1,
name: 'T1',
description: 'D2',
image: require('../assets/mosh.jpg')
},
{
id: 2,
name: 'T2',
description: 'D2',
image: require('../assets/mosh.jpg')
},
{
id: 3,
name: 'T3',
description: 'D3',
image: require('../assets/mosh.jpg')
},
{
id: 4,
name: 'T4',
description: 'D4',
image: require('../assets/mosh.jpg')
}
]
export default function Message () {
const [messages, setMessage] = useState(messages)
const handleDelete = messages => {
const newMessages = messages.filter(m => m.id != messages.id)
setMessage(newMessages)
}
return (
<SafeAreaView style={styles.screen}>
<FlatList
data={messages}
keyExtractor={messages => messages.id.toString()}
renderItem={({ item }) => (
<ListItem
name={item.name}
description={item.description}
image={item.image}
onPress={() => console.log('touched', item)}
renderRightActions={() => (
<DeleteSwipe onPress={() => handleDelete(item)} />
)}
/>
)}
ItemSeparatorComponent={ListItemSeparator}
/>
<FlatList />
</SafeAreaView>
)
}
const styles = StyleSheet.create({
screen: {
padding: Platform.OS === 'android' ? StatusBar.currentHeight : 0
}
})
DeleteSwipe.js
import React from 'react'
import { View, Text, StyleSheet, TouchableWithoutFeedback } from 'react-native'
import Swipeable from 'react-native-gesture-handler/Swipeable'
import { AntDesign } from '#expo/vector-icons'
const DeleteSwipe = props => {
const { renderRightActions } = props
return (
<TouchableWithoutFeedback onPress={console.log('delete it')}>
<View style={styles.container}>
<AntDesign name='delete' size={24} color='white' />
</View>
</TouchableWithoutFeedback>
)
}
const styles = StyleSheet.create({
container: {
width: 70,
justifyContent: 'center',
alignItems: 'center',
backgroundColor: '#ff5252'
}
})
export default DeleteSwipe

If it is a debugger issue, Restart the debugger if react native debugger is running. and again start
Or it could be a flexbox issue, Try to add or remove display: flex and flex:1 on this and parent.
Or it could be component is too small, Open inspector from dev menu and check component names in screen.

Change onPress={console.log....} to onPress={() => console.log(...
)}
But it seems what you want is onPress={props.onPress}

When i want to delete one item in my list, everything gets deleted Expo, React Native

This is my app.js
the main body of my app.
...
import React, { useState } from "react";
import {
StyleSheet,
Text,
View,
Button,
TextInput,
FlatList,
} from "react-native";
import GoalItem from "./components/GoalItem";
import GoalInput from "./components/GoalInput";
export default function App() {
const [lifeGoals, setLifeGoals] = useState([]);
const addGoalHandler = (goalTitle) => {
setLifeGoals((currentGoals) => [
...currentGoals,
{ key: Math.random().toString(), value: goalTitle },
]);
};
const removeGoalHandler = (goalId) => {
setLifeGoals((currentGoals) => {
return currentGoals.filter((goal) => goal.id !== goalId);
});
};
return (
<View style={styles.Screen}>
<GoalInput onAddGoal={addGoalHandler} />
<FlatList
keyExtractor={(item, index) => item.id}
data={lifeGoals}
renderItem={(itemData) => (
<GoalItem
id={itemData.item.id}
onDelete={removeGoalHandler}
title={itemData.item.value}
/>
)}
/>
</View>
);
}
const styles = StyleSheet.create({
Screen: {
padding: 50,
},
});
...
This is my GoalItem which houses my list
...
import React from "react";
import { StyleSheet, View, Text, TouchableOpacity } from "react-native";
const GoalItem = (props) => {
return (
<TouchableOpacity onPress={props.onDelete.bind(this, props.id)}>
<View style={styles.ListItem}>
<Text>{props.title}</Text>
</View>
</TouchableOpacity>
);
};
const styles = StyleSheet.create({
ListItem: {
padding: 10,
marginVertical: 10,
backgroundColor: "#CCFFFF",
borderRadius: 15,
},
});
export default GoalItem;
...
This is my GoalInput which handles the userinput and appending onto the list
...
import React, { useState } from "react";
import { View, TextInput, Button, Stylesheet, StyleSheet } from "react-native";
const GoalInput = (props) => {
const [enteredGoal, setEnteredGoal] = useState("");
const InputGoalHandler = (enteredText) => {
setEnteredGoal(enteredText);
};
return (
<View style={styles.inputContainer}>
<TextInput
placeholder="Enter Task Here"
style={styles.InputBox}
onChangeText={InputGoalHandler}
value={enteredGoal}
/>
<Button title="add" onPress={props.onAddGoal.bind(this, enteredGoal)} />
</View>
);
};
const styles = StyleSheet.create({
InputBox: {
borderColor: "black",
borderWidth: 0,
padding: 10,
width: "80%",
},
inputContainer: {
flexDirection: "row",
justifyContent: "space-between",
alignItems: "center",
},
});
export default GoalInput;
...
I believe that the key might be the issue but i'm really not sure. What's supposed to happen is that when you click on an item in the list, it should be deleted, however it's deleting my whole list. How do i solve this?

const removeGoalHandler = (goalId) => {
setLifeGoals(lifeGoals.filter((m) => m.id !== goalId.id));
};
<FlatList
keyExtractor={(item) => item.id}
data={lifeGoals}
renderItem={(itemData) => (
<GoalItem
onDelete={removeGoalHandler}
title={itemData.item.value}
/>
)}
/>
const GoalItem = ({onDelete, title}) => {
return (
<TouchableOpacity onPress={onDelete}>
<View style={styles.ListItem}>
<Text>{title}</Text>
</View>
</TouchableOpacity>
);
};
try this