Observing livedata permissions

PermissionObserver.kt

override fun setupObserver(permissionResultLiveData: LiveData<PermissionResult>) {
    permissionResultLiveData.observe(this, Observer<PermissionResult> {
        when (it) {
            is PermissionResult.PermissionGranted -> {
                if (it.requestId == REQUEST_ID) {
                    //Add your logic here after user grants permission(s)
                }
            }
            is PermissionResult.PermissionDenied -> {
                if (it.requestId == REQUEST_ID) {
                    //Add your logic to handle permission denial
                }
            }
            is PermissionResult.PermissionDeniedPermanently -> {
                if (it.requestId == REQUEST_ID) {
                    //Add your logic here if user denied permission(s) permanently.
                    //Ideally you should ask user to manually go to settings and enable permission(s)
                }
            }
            is PermissionResult.ShowRational -> {
                if (it.requestId == REQUEST_ID) {
                    //If user denied permission frequently then she/he is not clear about why you are asking this permission.
                    //This is your chance to explain them why you need permission.
                }
            }
        }
    })
}