I want this output:
if I click the "A" alphabet header then "A" alphabet data only hide
if I click the "A" alphabet header then the "A" alphabet data only show
if I click the "B" alphabet header then the "B" alphabet data only hide
if I click the "B" alphabet header then the "B" alphabet data only show
demo:https://imgur.com/a/leXgBpw
but I try to do it’s working like this:
if I click the "A" alphabet header then all data is hidden
if I click the "A" alphabet header then all data is shown
if I click the "B" alphabet header then all data is shown
if I click the "B" alphabet header then all data is hidden
demo :https://imgur.com/a/ZfALzVg
Code
Main.js
import React, { useState } from 'react';
import { Text, View, Image, StyleSheet, TouchableOpacity } from 'react-native';
import StickyHeaderFlatlist from 'react-native-sticky-header-flatlist';
import { nameData } from './dummydata';
const App = () => {
const [shouldShow, setShouldShow] = useState(true);
const renderheader = ({ item }) => {
return (
<>
{item.title == 'A' ? (
<TouchableOpacity onPress={() => setShouldShow(!shouldShow)}>
<Text style={style.text}>{item.title}</Text>
</TouchableOpacity>
) : null}
{item.title == 'B' ? (
<TouchableOpacity onPress={() => setShouldShow(!shouldShow)}>
<Text style={style.text}>{item.title}</Text>
</TouchableOpacity>
) : null}
</>
);
};
const renderitem = ({ item }) => {
return (
<>
<>
{shouldShow ? (
<View
style={{
padding: 10,
height: 80,
//borderWidth: 0.5,
//borderColor: '#000',
//backgroundColor: '#000',
marginTop: 10,
}}>
<View style={{ flexDirection: 'row' }}>
<Image
source={{ uri: item.img }}
style={{ width: 50, height: 50, borderRadius: 30 }}
/>
<Text
style={{
fontSize: 20,
marginTop: 0,
marginLeft: 10,
}}>
{item.name}
</Text>
</View>
<Text
style={{
marginLeft: 60,
marginTop: -20,
fontSize: 14,
}}>
{item.contact}
</Text>
</View>
) : null}
</>
</>
);
};
return (
<View>
<>
<Text
style={{
textAlign: 'center',
fontSize: 30,
padding: 10,
fontWeight: 'bold',
}}>
contact List
</Text>
<StickyHeaderFlatlist
data={nameData}
keyExtractor={(_, i) => i + ''}
childrenKey={'contactList'}
renderHeader={renderheader}
renderItem={renderitem}
/>
</>
</View>
);
};
export default App;
const style = StyleSheet.create({
text: {
padding: 10,
backgroundColor: '#000',
fontWeight: 'bold',
fontSize: 30,
fontWeight: 'bold',
color: '#fff',
},
});
dummydata.js
export const nameData = [
{
title: 'A',
contactList: [
{
name: 'Aacgman',
contact: 2902912712,
img: 'https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcT4oOTHA8YZSX72pio8djNOBHxnOP5pFdUC6A&usqp=CAU',
},
{
name: 'Aadesh',
contact: 2902912712,
img: 'https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcT4oOTHA8YZSX72pio8djNOBHxnOP5pFdUC6A&usqp=CAU',
},
{
name: 'Aadi',
contact: 2902912712,
img: 'https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcT4oOTHA8YZSX72pio8djNOBHxnOP5pFdUC6A&usqp=CAU',
},
{
name: 'Aadidev',
contact: 2902912712,
img: 'https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcT4oOTHA8YZSX72pio8djNOBHxnOP5pFdUC6A&usqp=CAU',
},
{
name: 'Aadijay',
contact: 2902912712,
img: 'https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcT4oOTHA8YZSX72pio8djNOBHxnOP5pFdUC6A&usqp=CAU',
},
{
name: 'Aadimoolan',
contact: 2902912712,
img: 'https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcT4oOTHA8YZSX72pio8djNOBHxnOP5pFdUC6A&usqp=CAU',
},
{
name: 'Aadipat',
contact: 2902912712,
img: 'https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcT4oOTHA8YZSX72pio8djNOBHxnOP5pFdUC6A&usqp=CAU',
},
{
name: 'Aadit',
contact: 2902912712,
img: 'https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcT4oOTHA8YZSX72pio8djNOBHxnOP5pFdUC6A&usqp=CAU',
},
{
name: 'Aaditeya',
contact: 2902912712,
img: 'https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcT4oOTHA8YZSX72pio8djNOBHxnOP5pFdUC6A&usqp=CAU',
},
],
},
{
title: 'B',
contactList: [
{
name: 'Baalaark',
contact: 2902912712,
img: 'https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcT4oOTHA8YZSX72pio8djNOBHxnOP5pFdUC6A&usqp=CAU',
},
{
name: 'Baalan',
contact: 2902912712,
img: 'https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcT4oOTHA8YZSX72pio8djNOBHxnOP5pFdUC6A&usqp=CAU',
},
{
name: 'Baalakrishan',
contact: 2902912712,
img: 'https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcT4oOTHA8YZSX72pio8djNOBHxnOP5pFdUC6A&usqp=CAU',
},
{
name: 'Baanbhatt',
contact: 2902912712,
img: 'https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcT4oOTHA8YZSX72pio8djNOBHxnOP5pFdUC6A&usqp=CAU',
},
{
name: 'Baanke Bihaari',
contact: 2902912712,
img: 'https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcT4oOTHA8YZSX72pio8djNOBHxnOP5pFdUC6A&usqp=CAU',
},
{
name: 'Baasim',
contact: 2902912712,
img: 'https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcT4oOTHA8YZSX72pio8djNOBHxnOP5pFdUC6A&usqp=CAU',
},
],
},
];
I’m also able to use this lib but I don’t know how to use this in my code
if you able to apply any option in my code please help me ?
2
Answers
you are having problem with useEffect setShouldShow, as in current scenario you are having problem due to this event onPress={() => setShouldShow(!shouldShow)}
as shouldShow some time get set to true and sometime to false… if its true then set to false and false then set to true. due to this you are having issues.
You should declare the
shouldShow
variable as an array and add/remove the title shown/hidden:Link to playground.