pavlospt

private fun initiateGoogleSignIn() {
    val signInIntent = Auth.GoogleSignInApi.getSignInIntent(googleApiClient)
    startActivityForResult(signInIntent, RC_SIGN_IN)
}

pavlospt

override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
    super.onActivityResult(requestCode, resultCode, data)

    when (requestCode) {
        RC_SIGN_IN -> handleGoogleSignInResolution(resultCode, data)
    }
}

pavlospt

private fun initGoogleApiClient() {
    googleApiClient = GoogleApiClient.Builder(this)
            .addConnectionCallbacks(this)
            .enableAutoManage(this, this)
            .addApi(Auth.GOOGLE_SIGN_IN_API, googleSignInOptions)
            .addApi(Auth.CREDENTIALS_API)
            .build()
}

pavlospt

private fun saveCredentials() {

    val emailInvalid: Boolean = emailAddressTextInput.editText?.text.toString().trim().isNullOrEmpty() ?: false
    val passwordInvalid: Boolean = passwordTextInput.editText?.text.toString().trim().isNullOrEmpty() ?: false

    if (emailInvalid) {
        emailRequirementError()
        return
    }

pavlospt

private fun requestCredentials() {
    Auth
            .CredentialsApi
            .request(googleApiClient, smartlockCredentialsRequest)
            .setResultCallback({ credentialRequestResult ->
                handleCredentialRequestResult(credentialRequestResult)
            })
}

pavlospt

private fun initSmartlockCredentialsRequest() {
    smartlockCredentialsRequest = CredentialRequest.Builder()
            .setPasswordLoginSupported(true)
            .build()
}

pavlospt

private fun initHintRequest() {
    hintRequest = HintRequest.Builder()
            .setHintPickerConfig(
                    CredentialPickerConfig.Builder()
                            .setShowCancelButton(true)
                            .setPrompt(CredentialPickerConfig.Prompt.SIGN_IN)
                            .build()
            )
            .setEmailAddressIdentifierSupported(true)
            .build()

pavlospt

private fun requestEmailHints() {
    val intent = Auth.CredentialsApi.getHintPickerIntent(googleApiClient, hintRequest)
    try {
        startIntentSenderForResult(intent.intentSender, RC_HINT_REQUEST, null, 0, 0, 0)
    } catch (e: IntentSender.SendIntentException) {
        emailHintRequestFailure()
    }
}

pavlospt

override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
    super.onActivityResult(requestCode, resultCode, data)

    when (requestCode) {
        RC_HINT_REQUEST -> handleEmailHintRequestResolution(resultCode, data)
    }
}

pavlospt

private fun handleEmailHintRequestResolution(resultCode: Int, data: Intent?) {
    if (resultCode == AppCompatActivity.RESULT_CANCELED) {
        emailHintRequestCancelled()
    } else {
        emailHintRequestSuccess(data)
    }
}