Example of using AccountManager.newChooseAccountIntent without GET_ACCOUNTS permission

MainActivity.kt

/*
 * Copyright 2018 Google LLC. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.example.android.accountchoose

import android.accounts.AccountManager
import android.content.Intent
import android.os.Bundle
import android.support.v7.app.AppCompatActivity
import android.util.Log

class MainActivity : AppCompatActivity() {
    private var promptedForAccount = false

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
    }

    override fun onResume() {
        super.onResume()

        if (!promptedForAccount) {
            promptedForAccount = true
            val intent = AccountManager.newChooseAccountIntent(
                    null,
                    null,
                    arrayOf("com.google"),
                    false,
                    null,
                    null,
                    null,
                    null)
            startActivityForResult(intent, ACCOUNT_PICK)
        }
    }

    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
        super.onActivityResult(requestCode, resultCode, data)
        if (requestCode == ACCOUNT_PICK) {
            val accountName = data?.extras?.get(AccountManager.KEY_ACCOUNT_NAME) ?: "NONE"
            Log.d("MainActivity", "Selected account: $accountName")
        }
    }
}

private const val ACCOUNT_PICK = 10