requestPermission does not return result

[NeroJz]

🔙 Regression

List permissions_group = [PermissionGroup.contacts, PermissionGroup.storage];

Map<PermissionGroup, PermissionStatus> permissions =
await PermissionHandler().requestPermissions(permissions_group);

print(permissions)

Hi, I tried to run the code above. Unfortunately, I cannot get the result after granting the permission from the dialog. Any suggestion?

[marinat]

any suggestions?

[marinat]

🔙 Regression

List permissions_group = [PermissionGroup.contacts, PermissionGroup.storage];

Map<PermissionGroup, PermissionStatus> permissions =
await PermissionHandler().requestPermissions(permissions_group);

print(permissions)

Hi, I tried to run the code above. Unfortunately, I cannot get the result after granting the permission from the dialog. Any suggestion?

Show code, pls

[mvanbeusekom]

@NeroJz, some more information would be appreciated. The example app with the plugin doesn't show this behaviour.

Things I would be interested in is:

• Does this happen on both iOS and Android?
• Which version of Flutter are you using (e.g. supply the output of flutter doctor -v command)?
• Which version of the plugin are you using?

The best way for us to help you would be to share a example app reproducing the problem.

[kevincaicedo]

I have also presented the same problem and this happens when you add some dependency using register.addRequestPermissionsResultListener
happens to me with the ImagePicker

[gvstrmrgh]

Experiencing the same issue, tested on huawei p9 Android 7.0

try {
      final permissionNames = await permissionHandler.requestPermissions(permissionsNeeded);
      print("got permissions: $permissionNames");
} catch(e) {
      print("request permission error: $e");
}

the print statement in the try block is never called.
if i rerun the function (after having chosen deny or approve on the permission dialogs) I get ERROR_ALREADY_REQUESTING_PERMISSIONS in the catch block

Flutter version 1.2.1
Latest version of the plugin (^3.0.0 specified in pubspec)

Hey @mvanbeusekom I'm having the exact same issue. My app gets stuck on this line:
await PermissionHandler() .requestPermissions([PermissionGroup.locationWhenInUse]);

Even though permissions are granted, it doesn't move further than this. If I restart the app, it recognizes that permissions were granted and then progresses further.

This is the result of flutter doctor -v:

[√] Flutter (Channel master, v1.5.9-pre.216, on Microsoft Windows [Version 10.0.17763.475], locale en-US)
    • Flutter version 1.5.9-pre.216 at C:\flutter
    • Framework revision 829bdeb426 (9 hours ago), 2019-05-10 15:53:41 -0700
    • Engine revision 6e3c043141
    • Dart version 2.3.1 (build 2.3.1-dev.0.0 a0290f823c)


[√] Android toolchain - develop for Android devices (Android SDK version 28.0.3)
    • Android SDK at C:\Users\Fawad\AppData\Local\Android\sdk
    • Android NDK location not configured (optional; useful for native profiling support)
    • Platform android-28, build-tools 28.0.3
    • Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1343-b01)
    • All Android licenses accepted.

[√] Android Studio (version 3.4)
    • Android Studio at C:\Program Files\Android\Android Studio
    • Flutter plugin version 35.0.1
    • Dart plugin version 183.6270
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1343-b01)

[√] VS Code (version 1.33.1)
    • VS Code at C:\Users\Fawad\AppData\Local\Programs\Microsoft VS Code
    • Flutter extension version 3.0.1

[√] Connected device (1 available)
    • SM G950F • ce03171369b23cc90c • android-arm64 • Android 9 (API 28)

Also this line shows up in the debug console:
E/location_permissions(20056): Flutter result object is null.

Not sure if this is relevant but figured it might help if it is.

[ened]

Should be fixed in #109 already, please retest.

[evelyne24]

I have the same issue in version 3.1.0 which apparently is the latest version at the moment of testing. This happens on iOS 12+.

I execute the following code:

Future<bool> checkPermissions() async {
    try {
      PermissionStatus permission = await PermissionHandler().checkPermissionStatus(PermissionGroup.contacts);
      _log.debug('Current contacts permissions: $permission');
      if (permission != PermissionStatus.granted) {
        _log.debug('Asking for contacts permissions: $permission');
        Map<PermissionGroup, PermissionStatus> result =
            await PermissionHandler().requestPermissions([PermissionGroup.contacts]);
        _log.debug('Permission result: ${result[permission]}');
        return result[permission] == PermissionStatus.granted;
      }
      return true;
    } catch (e) {
      // somethings this crashes on iOS with an error inside the library - monitor
      _log.error('Crash when asking permissions', e);
      return false;
    }
  }

Aside from the crash that happens (a separate issue, probably related to this), this is what I get when I Deny the permissions:

14:31:41.044 110 fine Current contacts permissions: PermissionStatus.denied
14:31:41.046 111 fine Asking for contacts permissions: PermissionStatus.denied
14:31:41.048 112 fine Permission result: null

Ideally, there would be a way to show the permission dialog again, to be able to press Allow

[boskokg]

I also had this problem on android but it turns out that imei_plugin plugin invoked it...

kevincaicedo/imei_plugin#9

Facing the same problem now, no progress? await never receive any response from requestPermissions.

[dmskys]

Facing the same problem now, no progress? await never receive any response from requestPermissions.

Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel dev, v1.10.13, on Mac OS X 10.14.6 18G103, locale zh-Hans-CN)

[✓] Android toolchain - develop for Android devices (Android SDK version 28.0.3)
[✓] Xcode - develop for iOS and macOS (Xcode 11.0)
[✓] Android Studio (version 3.5)
[✓] VS Code (version 1.39.0)
[✓] Connected device (1 available)

[dmskys]

I found this reason because imei_plugin prevented the return

[pablanka]

I'm facing this issue.
package version: ^4.4.0+hotfix.2
os: android

My code:

final handler = PermissionHandler(); 
handler.requestPermissions(perms).then((value) => print(value));

print(value) is never called