react native inifinite scroll code example

Example 1: react native scrollview

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

export default function App() {
  return (
      <ScrollView style={styles.scrollView}>
        <Text style={styles.text}>
          Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do
          eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad
          minim veniam, quis nostrud exercitation ullamco laboris nisi ut
          aliquip ex ea commodo consequat. Duis aute irure dolor in
          reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla
          pariatur. Excepteur sint occaecat cupidatat non proident, sunt in
          culpa qui officia deserunt mollit anim id est laborum.
        </Text>
      </ScrollView>
  );
}

const styles = StyleSheet.create({
  scrollView: {
    backgroundColor: 'gray',
    marginHorizontal: 20,
  },
  text: {
    fontSize: 42,
  },
});

Example 2: make an infinite list in react native

export default function App() {
  const [enteredGoal,setEnteredGoal] = useState('');
  const [courseGoals, setCourseGoals] = useState([]);
  const goalInputHandler = (enteredText) => {
    setEnteredGoal(enteredText);
  }
  const addGoalHandler = () => {
    setCourseGoals(currentGoals => 
      [...currentGoals,{key:Math.random().toString(),value:enteredGoal}]
    )
  }

  return (
    <View style={styles.screen}>
      <View>
        <View style={styles.otherview}>
          <TextInput 
          placeholder='A goal' 
          style={styles.textinput} 
          onChangeText={goalInputHandler} 
          value={enteredGoal}/>
          <Button title='Add' onPress={addGoalHandler}/>
        </View>
      </View>
      
      <FlatList 
        data={courseGoals}
        renderItem={itemData => (
          <View style={styles.listItem}>
            <Text>{itemData.item.value}</Text>
          </View>
        )}
      />
        
          
      
    </View>
  );
}

Example 3: react native scroll to

import React, { useRef } from 'react';
import { ScrollView, View, Button } from 'react-native';

export default function scrollTo() {
  	const scrollRef = useRef();
  
  	const handleClick = number => {
    	scrollRef.current.ScrollTo({
          y: (100 * number),
          animated: true,
    };
  
	return (
      <ScrollView ref={scrollRef} >
      	<View style={{height: '100px'}}>
      		<Button onPress={() => handleClick(1) title="1"/>
		</View>
		<View style={{height: '100px'}}>
      		<Button onPress={() => handleClick(2) title="2"/>
		</View>
		<View style={{height: '100px'}}>
      		<Button onPress={() => handleClick(3) title="3"/>
		</View>
		<View style={{height: '100px'}}>
      		<Button onPress={() => handleClick(4) title="4"/>
		</View>
		<View style={{height: '100px'}}>
      		<Button onPress={() => handleClick(5) title="5"/>
		</View>
      </ScrollView>
    );
}