Question 410816 in Flutter Question posted in
The official Flutter documentation can be found here.

Flutter – Why is the group list empty even though this contact is a member of a group?

I have grouped the contacts, but when I run the print() command in the console, the list of groups is empty.
Why is the group list empty even though this contact is a member of a group?

enter image description here

import 'package:flutter/material.dart';
import 'package:flutter_contacts/contact.dart';
import 'package:flutter_contacts/flutter_contacts.dart';

class ContactsPage extends StatefulWidget {
  const ContactsPage({super.key});

  @override
  State<ContactsPage> createState() => _ContactsPageState();
}

class _ContactsPageState extends State<ContactsPage> {
  List<Contact> _contacts =[];

  @override
  void initState() {
    super.initState();
    _fetchContacts();
  }

  Future _fetchContacts() async {
    if (!await FlutterContacts.requestPermission()) {
    } else {
      List<Contact> contacts = await FlutterContacts.getContacts(withProperties: true);
      setState(() => _contacts = contacts);
      print(_contacts);
    }
    return _contacts;
  }


  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: FutureBuilder(
        future: _fetchContacts(),
        builder: (BuildContext context, index) {
          return ListView.builder(
            itemCount: _contacts.length,
            itemBuilder: (BuildContext context, int index) {
              return ListTile(
                title: Text(_contacts[index].groups[0].name),
              );
            }, );
        },),
    );
  }
}

console result:

I/flutter ( 9205): [Contact(id=253, displayName=A. H pahlozadeh, thumbnail=null, photo=null, isStarred=false, name=Name(first=A., last=pahlozadeh, middle=H, prefix=, suffix=, nickname=, firstPhonetic=, lastPhonetic=, middlePhonetic=), phones=[], emails=[Email([email protected], label=EmailLabel.other, customLabel=, isPrimary=true)], addresses=[], organizations=[], websites=[Website(url=http://www.google.com/profiles/114734360510822226117, label=WebsiteLabel.profile, customLabel=)], socialMedias=[], events=[], notes=[], accounts=[], groups=[]
Tags:

2

Answers


  1. 0

    By your log, you can notice that all of the properties regarding your contact are missing:

    I/flutter ( 9205): [Contact(id=253, displayName=A. H pahlozadeh, thumbnail=null, photo=null, isStarred=true, name=Name(first=, last=, middle=, prefix=, suffix=, nickname=, firstPhonetic=, lastPhonetic=, middlePhonetic=), phones=[], emails=[], addresses=[], organizations=[], websites=[], socialMedias=[], events=[], notes=[], accounts=[], groups=[])

    That is because when you request contacts through the FlutterContacts API, you didn’t add the argument to get the properties.

    To do so, you can do this:

    Future _fetchContacts() async {
    if (!await FlutterContacts.requestPermission()) {
    } else {
      List<Contact> contacts = await FlutterContacts.getContacts(
  withProperties: true); /// <---- HERE
      setState(() => _contacts = contacts);
      print(_contacts);
    }
    return _contacts;
  }

    You can also see this in the example of the package in pub.dev.

    Login or Signup to reply.
  2. 0

    if you change your code like this everythings will be ok

    import 'package:flutter/material.dart';
import 'package:flutter_contacts/contact.dart';
import 'package:flutter_contacts/flutter_contacts.dart';

class ContactsPage extends StatefulWidget {
  const ContactsPage({super.key});

  @override
  State<ContactsPage> createState() => _ContactsPageState();
}

class _ContactsPageState extends State<ContactsPage> {
  List<Contact> _contacts =[];

  @override
  void initState() {
    super.initState();
    _fetchContacts();
  }

  Future<void> _fetchContacts() async {
    if (!await FlutterContacts.requestPermission()) {
    } else {
      List<Contact> contacts = await FlutterContacts.getContacts(withProperties: true);
      setState(() { _contacts = contacts; print(_contacts);});
    }
  }


  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: ListView.builder(
            itemCount: _contacts.length,
            itemBuilder: (BuildContext context, int index) {
              return ListTile(
                title: Text(_contacts[index].groups[0].name),
              );
            })
    );
  }
}
    Login or Signup to reply.
Please signup or login to give your own answer.

Back To Top
Search