Permissions

This library provides support for out-of-the-box access to device permissions.

Supported device features:

• Bluetooth
• Calendar
• Camera
• Contacts
• Location (both with and without background)
• Microphone
• Notifications
• Storage (aka Photos on iOS)

Installing

This library is available on Maven Central. You can import Kaluga Permissions as follows:

repositories {
 // ...
 mavenCentral()
}
// ...
dependencies {
 // ...
 implementation("com.splendo.kaluga:base-permissions:$kalugaVersion")
}

Usage

Permissions can be requested through an instance of the Permissions class. This class is instantiated with a PermissionsBuilder, which defaults to requesting permissions for the Application Context (Android) or Main NSBundle (iOS). A custom PermissionContext can be provided. To be able to use builder, specific permission should be registered. Use the register<feature>Permission() (single use only) or register<feature>PermissionIfNotRegistered() (multiple uses) method of the PermissionsBuilder.

Permissions are modelled as a Flow of State, providing updates should the state change during observation. A permission can either be Allowed or Denied. A Denied permission can in turn be Locked, preventing the app from requesting it, or Requestable.

To request a permission, simply call permissions[$type].request(), where $type is the Permission you want to request. This function will return true or false when the user has given or explicitly denied the permission. This function returns false if the user denies any part of the permission, even if the other permissions are granted. For instance the Location permission will be denied if background support is requested but only foreground is given. If a request fails, a new request with a more limited scope can then be made.

val permissionBuilder = PermissionBuilder().apply {
    registerLocationPermissionIfNotRegistered()
}
val permissions = Permissions(permissionBuilder)
val locationPermission = Permission.Location(background=true, precise=true)
launch {
    if (permissions[locationPermission].request()) {
        // Permission granted
    }
}

Testing

Use the test-utils-permissions module to get a mockable PermissionBuilder, PermissionManager, or PermissionStateRepo.