listentocontacts 0.0.1+3 listentocontacts: ^0.0.1+3 copied to clipboard
Listen to changes to the user's contacts. This uses a ContentObserver on Android and a NotificationCenter observer on iOS. It does NOT query your contacts; only listen to changes to them.
import 'package:flutter/material.dart';
import 'dart:async';
import 'package:flutter/services.dart';
import 'package:listentocontacts/listentocontacts.dart';
import 'package:permission_handler/permission_handler.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatefulWidget {
@override
_MyAppState createState() => _MyAppState();
}
class _MyAppState extends State<MyApp> {
int changes = 0;
Future<PermissionStatus> _getPermission() async {
final PermissionStatus permission = await Permission.contacts.status;
if (permission != PermissionStatus.granted &&
permission != PermissionStatus.denied) {
final Map<Permission, PermissionStatus> permissionStatus =
await [Permission.contacts].request();
return permissionStatus[Permission.contacts] ??
PermissionStatus.undetermined;
} else {
return permission;
}
}
@override
void initState() {
super.initState();
startListening();
}
void startListening() async {
print("Start Listening in Flutter");
final PermissionStatus permissionStatus = await _getPermission();
if (permissionStatus == PermissionStatus.granted)
Listentocontacts().onContactsChanged.listen((event) {
setState(() {
changes += 1;
});
});
}
// Platform messages are asynchronous, so we initialize in an async method.
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
appBar: AppBar(
title: const Text('Plugin example app'),
),
body: Center(
child:
Container(child: Text("Listening. Nr of changes: $changes"),)
),
),
);
}
}