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Requesting permissions while using Flutter Clean Architecture?

I need to request permissions for the camera and Bluetooth in one of my features, and I’m using the permission_handler package. I’m not sure if I should inject the permission_handler package inside the feature’s data layers by passing it as a local datasource, or if I should create a separate feature specifically for handling permissions with different use cases for the camera and Bluetooth.

For example, let’s say I need to access camera permission in the profile feature to click an image.

Is adding PermissionHandler in ProfileLocalDataSourceImpl correct?

class ProfileLocalDataSourceImpl implements ProfileLocalDataSource {

    private final SharedPreferences sharedPref;
    private final PermissionHandler permissionHandler;

    // Constructor and methods...
}

Or should I create a new feature, such as ProfileHandling, with its own data, domain, and presentation layers?"

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2

Answers


  1. 0

    I think it’s reasonable to implement the permission handler as a feature. This is not an infrastructure layer (which can be changed), but an application layer, that is, an application service (controller) which can use infrastructure storage service (for example, SharedPreferences, a text file, or a remote database).

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  2. 0

    The ProfileLocalDataSourceImpl only focuses on data from your local/remote storage. It doesn’t need to be aware of permission handling.

    So a good approach is to create a common usecase i.e. RequestCameraPermissionUsecase.

    Keeping your permission logic separate from data sources promotes Separation of Concerns.

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