React native contacts in list works really slow - react-native

Question

I'm trying to add a feature to my app which is add your contacts to your profile. I'm using a package for this but it works slow (in my case 470 contact record I got in my phone).
The package
import Contacts from 'react-native-contacts';
My code
componentDidMount() {
this.getContacts();
}
getContacts() {
PermissionsAndroid.request(PermissionsAndroid.PERMISSIONS.READ_CONTACTS, {
title: 'Contacts',
message: 'This app would like to view your contacts.',
buttonPositive: 'Please accept bare mortal',
})
.then(
Contacts.getAllWithoutPhotos().then(contacts => {
var contactss = [];
contacts.map(contact => {
/// I'm mapping it for showing them in simple list with checkbox
contactss.push({...contact, checked: false});
});
// then sorting for alphabetical order by displayName
contactss.sort(function (a, b) {
if (a.displayName.toLowerCase() < b.displayName.toLowerCase())
return -1;
if (a.displayName.toLowerCase() > b.displayName.toLowerCase())
return 1;
return 0;
});
this.setState(
{contacts: contactss, loaded: true},
() => {
console.log('contacts', this.state.contacts);
},
);
}),
)
.then(contacts => {});
}
That's all code. Is this normal or should I do what?
Thank you.
I'm just trying to handle with this data. Also I'm giving select option to user which account you want, like this.
//function to select contact
checkContc(contc) {
console.log('checkFriend', contc);
let contactsTemp = this.state.contactsTemp.map(el =>
el.recordID == contc.recordID
? {...el, checked: !el.checked}
: {...el},
);
this.setState({contactsTemp}, () => {
console.log('check frined stateD ', this.state);
});
}
// render in scrollview
<ScrollView>
{this.state.contactsTemp?.map((follower, index) => {
return (
<TouchableOpacity
onPress={() => {
this.checkFriend(follower);
}}>
<FriendsComponent
checked={follower.checked}
nameSurname={follower.displayName}
key={index}
/>
</TouchableOpacity>
);
})}
</ScrollView>
result

Answer 1

I made a research and it looks like it is that slow. I'm not sure if the only solution isn't the native one.