Who Me Too'd this topic

When the native App written in kotlin starts I call this method always :- 

private fun sendAuthRequest() {

    val request = AuthorizationRequest.Builder(
        SpotifyConstants.SPOTIFY_CLIENT_ID,
        AuthorizationResponse.Type.TOKEN,
        SpotifyConstants.SPOTIFY_REDIRECT_URI
    )
        .setShowDialog(true)
        .setScopes(arrayOf(SpotifyConstants.SPOTIFY_SCOPES))
        .build()

    // Starting the authorization window or intent
    AuthorizationClient.openLoginActivity(
        this,
        SpotifyConstants.SPOTIFY_AUTH_REQUEST_CODE,
        request
    )
}

This grants me the accessToken for the user.

Need Help with :-

1. If this is the best practice to follow this flow or shall I use a layer of backend since the client id is stored in the app.

2. The loading screen of Spotify intent shows everytime I open the app which I want to avoid. I will attach a screenshot of the screen which I am trying to avoid.