title: Firebase : Can't resolve google auth and GoogleSignInResult libraries
body: <p>I just started with Android and I am looking in to using Google Firebase for Google Sign-In. Unfortunately I am unable to import </p>
  
  <pre><code>import com.google.android.gms.auth.api.Auth;
  import com.google.android.gms.auth.api.signin.GoogleSignInResult;  
  </code></pre>
  
  <p>The error I get is </p>
  
  <pre><code>Cannot resolve symbol Auth
  Cannot resolve symbol GoogleSignInResult
  </code></pre>
  
  <p>My Project <code>build.gradle</code> looks like</p>
  
  <pre><code>dependencies {
      classpath 'com.android.tools.build:gradle:2.1.3'
      classpath 'com.google.gms:google-services:3.0.0'
  }
  </code></pre>
  
  <p>My Module <code>build.gradle</code> looks like</p>
  
  <pre><code>apply plugin: 'com.google.gms.google-services'
  .......
  .......
  .......
  dependencies {
      compile fileTree(dir: 'libs', include: ['*.jar'])
      testCompile 'junit:junit:4.12'
      compile 'com.android.support:appcompat-v7:24.2.0'
      compile 'com.android.support:design:24.2.0'
      compile 'com.facebook.android:facebook-android-sdk:[4,5)'
      compile 'com.android.support:support-v4:24.2.0'
      compile 'com.google.firebase:firebase-auth:9.4.0'
      compile 'com.google.firebase:firebase-core:9.4.0'
  }
  </code></pre>
  
  <p>Also following are the errors</p>
  
  <pre><code>Error:(229, 29) error: cannot find symbol variable disconnect_button
  Error:(227, 29) error: cannot find symbol variable sign_out_button
  Error:(225, 22) error: cannot find symbol variable sign_in_button
  Error:(214, 5) error: method does not override or implement a method from a supertype
  Error:(222, 5) error: method does not override or implement a method from a supertype
  Error:(117, 45) error: package Auth does not exist
  Error:(60, 25) error: cannot find symbol variable Auth
  Error:(210, 30) error: cannot find symbol variable sign_out_and_disconnect
  Error:(206, 13) error: cannot find symbol variable mStatusTextView
  Error:(201, 55) error: cannot find symbol variable firebase_status_fmt
  Error:(200, 13) error: cannot find symbol variable mStatusTextView
  Error:(164, 35) error: package Auth does not exist
  Error:(151, 44) error: cannot find symbol class GoogleSignInActivity
  Error:(204, 30) error: cannot find symbol variable sign_out_and_disconnect
  Error:(12, 39) error: package com.google.android.gms.auth.api does not exist
  Error:(198, 9) error: cannot find symbol method hideProgressDialog()
  Error:(174, 13) error: package Auth does not exist
  Error:(15, 46) error: cannot find symbol class GoogleSignInResult
  Error:(188, 13) error: package Auth does not exist
  Error:(59, 108) error: incompatible types: LoginActivity cannot be converted to OnConnectionFailedListener
  Error:(155, 25) error: cannot find symbol method hideProgressDialog()
  Error:(200, 55) error: cannot find symbol variable google_status_fmt
  Error:(206, 45) error: cannot find symbol variable signed_out
  Error:(117, 13) error: cannot find symbol class GoogleSignInResult
  Error:(209, 30) error: cannot find symbol variable sign_in_button
  Error:(201, 13) error: cannot find symbol variable mDetailTextView
  Error:(207, 13) error: cannot find symbol variable mDetailTextView
  Error:(203, 30) error: cannot find symbol variable sign_in_button
  Error:(136, 9) error: cannot find symbol method showProgressDialog()
  </code></pre>
  
  <p>Thanks.</p>