RequestHist.kt

val hintRequest = HintRequest.Builder()
            .setPhoneNumberIdentifierSupported(true)
            .build()
        val credentialsClient = Credentials.getClient(this)
        val intent = credentialsClient.getHintPickerIntent(hintRequest)
        try {
            startIntentSenderForResult(
                intent.intentSender,
                CREDENTIAL_PICKER_REQUEST,
                null, 0, 0, 0
            )
        } catch (e: IntentSender.SendIntentException) {
            Log.e("MainActivity", "Could not start intent: $e")
        }