Device ID in Flutter: device_info_plus package returns null when requesting androidId

Question

I'm a new Flutter developer, I'm about to develop a Flutter app which needs to use device id so I decided to use the device_info_plus package to get androidId, but when I request device info in order to get androidId within it, it returns null and also does not even exist in toMap() object. I don't know exactly what happened but all the documentation I went through says that this package could give me the device id.

Here is the function

Future<Object?> getId() async {
    var deviceInfo = DeviceInfoPlugin();
    if (Platform.isIOS) { // import 'dart:io'
      var iosDeviceInfo = await deviceInfo.iosInfo;
      return iosDeviceInfo.identifierForVendor; // unique ID on iOS
    } else if(Platform.isAndroid) {
      var androidDeviceInfo = await deviceInfo.androidInfo;
      print(androidDeviceInfo.androidId);
      return androidDeviceInfo.androidId; // unique ID on Android
    }
    return false;
  }

Answer 1

androidId functionality was removed from version 4.0.0. You can see it from the Changelog here.

If you'd like to get androidId, you need to downgrade device_info_plus in pubspec.yaml

device_info_plus: 3.2.4

P.S. There is the issue on Github that you can upvote. Probably this functionality will be returned.

Answer 2

Try this

Future<String> getDeviceId() async {
  var deviceInfo = DeviceInfoPlugin();
  late String deviceId;

  if (Platform.isIOS) {
    var iosDeviceInfo = await deviceInfo.iosInfo;
    deviceId = iosDeviceInfo.identifierForVendor!;
  } else if (Platform.isAndroid) {
    var androidDeviceInfo = await deviceInfo.androidInfo;
    deviceId = androidDeviceInfo.androidId!;
  } else {
    deviceId = 'null';
  }
  return deviceId;
}

Answer 3

Last time I was using device_info_plus 4.0.0 to get Android information. It is a nice library to get the information from Android.

pub.dev ->device_info_plus

This line will get all information what you want. deviceData = _readAndroidBuildData(await deviceInfoPlugin.androidInfo);

import 'dart:async';
import 'dart:developer' as developer;
import 'dart:io';
import 'package:device_info_plus/device_info_plus.dart';
import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';

void main() {
  runZonedGuarded(() {
    runApp(const MyApp());
  }, (dynamic error, dynamic stack) {
    developer.log("Something went wrong!", error: error, stackTrace: stack);
  });
}

class MyApp extends StatefulWidget {
  const MyApp({Key? key}) : super(key: key);

  @override
  _MyAppState createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  static final DeviceInfoPlugin deviceInfoPlugin = DeviceInfoPlugin();
  Map<String, dynamic> _deviceData = <String, dynamic>{};

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

  Future<void> initPlatformState() async {
    var deviceData = <String, dynamic>{};

    try {

        if (Platform.isAndroid) {
          deviceData =
              _readAndroidBuildData(await deviceInfoPlugin.androidInfo);
        }

    } on PlatformException {
      deviceData = <String, dynamic>{
        'Error:': 'Failed to get platform version.'
      };
    }

    if (!mounted) return;

    setState(() {
      _deviceData = deviceData;
    });
  }

  Map<String, dynamic> _readAndroidBuildData(AndroidDeviceInfo build) {
    print(build.id);
    return <String, dynamic>{
      'version.securityPatch': build.version.securityPatch,
      'version.sdkInt': build.version.sdkInt,
      'version.release': build.version.release,
      'version.previewSdkInt': build.version.previewSdkInt,
      'version.incremental': build.version.incremental,
      'version.codename': build.version.codename,
      'version.baseOS': build.version.baseOS,
      'board': build.board,
      'bootloader': build.bootloader,
      'brand': build.brand,
      'device': build.device,
      'display': build.display,
      'fingerprint': build.fingerprint,
      'hardware': build.hardware,
      'host': build.host,
      'id': build.id,
      'manufacturer': build.manufacturer,
      'model': build.model,
      'product': build.product,
      'supported32BitAbis': build.supported32BitAbis,
      'supported64BitAbis': build.supported64BitAbis,
      'supportedAbis': build.supportedAbis,
      'tags': build.tags,
      'type': build.type,
      'isPhysicalDevice': build.isPhysicalDevice,
      'androidId': build.androidId,
      'systemFeatures': build.systemFeatures,
    };
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text(
            kIsWeb
                ? 'Web Browser info'
                : Platform.isAndroid
                ? 'Android Device Info'
                : Platform.isIOS
                ? 'iOS Device Info'
                : Platform.isLinux
                ? 'Linux Device Info'
                : Platform.isMacOS
                ? 'MacOS Device Info'
                : Platform.isWindows
                ? 'Windows Device Info'
                : '',
          ),
        ),
        body: ListView(
          children: _deviceData.keys.map(
                (String property) {
              return Row(
                children: <Widget>[
                  Container(
                    padding: const EdgeInsets.all(10.0),
                    child: Text(
                      property,
                      style: const TextStyle(
                        fontWeight: FontWeight.bold,
                      ),
                    ),
                  ),
                  Expanded(
                      child: Container(
                        padding: const EdgeInsets.fromLTRB(0.0, 10.0, 0.0, 10.0),
                        child: Text(
                          '${_deviceData[property]}',
                          maxLines: 10,
                          overflow: TextOverflow.ellipsis,
                        ),
                      )),
                ],
              );
            },
          ).toList(),
        ),
      ),
    );
  }
}