title: com.firebase.ui.authui class not found whenever I try to import it
body: <p>I am using this code to do so but com.firebase.ui.authui is not present in the library. Where can I get it or How can I use it in the code. Please help.</p>
  
  <pre><code>startActivityForResult(
                              AuthUI.getInstance()
                                      .createSignInIntentBuilder()
                                      .setIsSmartLockEnabled(false)
                                      .setProviders(
                                              AuthUI.EMAIL_PROVIDER,
                                              AuthUI.GOOGLE_PROVIDER)
                                      .build(),
                              RC_SIGN_IN);
  </code></pre>
  
  <p>Here is my build.gradle file:</p>
  
  <pre><code>dependencies {
      compile fileTree(include: ['*.jar'], dir: 'libs')
      testCompile 'junit:junit:4.12'
      //noinspection GradleCompatible
      compile 'com.android.support:design:24.2.1'
      compile 'com.android.support:appcompat-v7:26.0.0'
      // Displaying images
      compile 'com.github.bumptech.glide:glide:3.6.1'
      compile 'com.google.firebase:firebase-database:11.8.0'
      compile 'com.google.firebase:firebase-auth:11.8.0'
      compile 'com.firebaseui:firebase-ui-database:3.2.1'
  }
  </code></pre>