Unable to range and broadcast on Samsung Android 12

[wieger]

Hi, I have build an app to scan for beacons using this package. It all works flawlessly on iOS devices but I cannot get it to work on my Android device, a samsung S10 running android 12. I hope that someone which has managed to get it working can help me debug it, or point me towards a step I missed during the setup. To debug it I am now running the example code provided in the repository At first I was missing the proper permissions but I think I have that sorted, combining some previous posts on this forum.

I have the following permissions in main/AndroidManifest.xml

   <uses-permission android:name="android.permission.INTERNET" />
    <!--Before Android 12 (but still needed location, even if not requested)-->
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />

    <uses-permission android:name="android.permission.BLUETOOTH" tools:remove="android:maxSdkVersion" />
    <uses-permission android:name="android.permission.BLUETOOTH_ADMIN" android:maxSdkVersion="30" />

    <uses-permission android:name="android.permission.BLUETOOTH_SCAN" android:usesPermissionFlags="neverForLocation" />
    <uses-permission android:name="android.permission.BLUETOOTH_CONNECT" />
    <uses-permission android:name="android.permission.BLUETOOTH_ADVERTISE" />

I request the required permissions with the following code, and all statuses resolve to granted

import 'package:permission_handler/permission_handler.dart';  //permission_handler: ^10.2.0

    PermissionStatus scan = await Permission.bluetoothScan.request();
    PermissionStatus connect = await Permission.bluetoothConnect.request();
    PermissionStatus bt = await Permission.bluetooth.request();
    PermissionStatus advertise = await Permission.bluetoothAdvertise.request();

I listen for beacons using: _streamRanging = flutterBeacon.ranging(regions).listen((RangingResult result) { print(result);

this does print a result but it contains no beacons:

I/flutter (27838): {"region":{"identifier":"BeaconType2","proximityUUID":"6a84c716-0f2a-1ce9-f210-6a63bd873dd9"},"beacons":[]}
I/flutter (27838): {"region":{"identifier":"Cubeacon","proximityUUID":"cb10023f-a318-3394-4199-a8730c7c1aec"},"beacons":[]}
I/flutter (27838): {"region":{"identifier":"MyRegion","proximityUUID":"xxxx-x-x-xxxx"},"beacons":[]}

Any help is greatly appreciated, thanks

[dalilabennasr]

@wieger did you find a solution? I'm facing the same issue. Thank you in advance

[wieger]

Unfortunately not, it must be something silly in the configuration. but after spending too much time on it I finally gave up on it. If you do get it to work please post it here!

Regards Wieger

On Wed, Jul 31, 2024 at 2:23 PM Dalila Ben Nasr @.***> wrote:

@wieger https://github.com/wieger did you find a solution? I'm facing the same issue. Thank you in advance

— Reply to this email directly, view it on GitHub https://github.com/alann-maulana/flutter_beacon/issues/131#issuecomment-2260397677, or unsubscribe https://github.com/notifications/unsubscribe-auth/AACZGMJSPEUYG35A3IE52HDZPDJNBAVCNFSM6AAAAABLYLSAQCVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDENRQGM4TONRXG4 . You are receiving this because you were mentioned.Message ID: @.***>

[dalilabennasr]

@wieger do you remember what flutter sdk you were using?

[wieger]

My pubspec.lock for the project says:

sdks: dart: ">=3.2.3 <4.0.0" flutter: ">=3.16.6"

On Wed, Jul 31, 2024 at 2:31 PM Dalila Ben Nasr @.***> wrote:

@wieger https://github.com/wieger do you remember what flutter sdk you were using?

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[dalilabennasr]

is the project in a git repo? is it public?

[wieger]

Its not public i'm afraid

On Wed, Jul 31, 2024 at 2:39 PM Dalila Ben Nasr @.***> wrote:

is the project in a git repo? is it public?

— Reply to this email directly, view it on GitHub https://github.com/alann-maulana/flutter_beacon/issues/131#issuecomment-2260427115, or unsubscribe https://github.com/notifications/unsubscribe-auth/AACZGMLVV3QSGF7NP4NEH5TZPDLHLAVCNFSM6AAAAABLYLSAQCVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDENRQGQZDOMJRGU . You are receiving this because you were mentioned.Message ID: @.***>

[kjm0202]

Currently I'm using Galaxy S22 with One UI 4.1 (Android 12) for test and it works for now. I think you might missed the request for location permission. Here's what I'm using for permission acquirement, hope it works for you too:

import 'package:permission_handler/permission_handler.dart';
import 'package:device_info_plus/device_info_plus.dart';

Future<void> _requestPermissions() async {
    var androidInfo = await DeviceInfoPlugin().androidInfo;
    var androidSdk = androidInfo.version.sdkInt;

    final locationStatus = await Permission.location.request();
    if (locationStatus.isPermanentlyDenied) {
      openAppSettings();
    }

    if (androidSdk <= 30) {
      final bluetoothStatus = await Permission.bluetooth.request();
      if (bluetoothStatus.isPermanentlyDenied) {
        openAppSettings();
      }
      return;
    } else /* if (androidSdk > 30) */ {
      Map<Permission, PermissionStatus> statuses = await [
        Permission.bluetoothScan,
        Permission.bluetoothAdvertise,
        Permission.bluetoothConnect
      ].request();

      if (statuses[Permission.bluetoothScan] == PermissionStatus.denied ||
          statuses[Permission.bluetoothAdvertise] == PermissionStatus.denied ||
          statuses[Permission.bluetoothConnect] == PermissionStatus.denied) {
        openAppSettings();
      }
      return;
    }
  }