title: FirebaseUI forced landscape mode
body: <p>I use FirebaseUI for register user. My application always use landscape mode. When on device disabled auto landscape mode, that at opened <code>AuthUI</code> window device set portrait mode. How make <code>AuthUI</code> opened on landscape mode?</p>
  <p>Manifest:</p>
  <pre><code>&lt;?xml version=&quot;1.0&quot; encoding=&quot;utf-8&quot;?&gt;
  &lt;manifest xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;
      package=&quot;...&quot;&gt;
      &lt;application&gt;
          &lt;activity
              android:name=&quot;.Activity&quot;
              android:screenOrientation=&quot;landscape&quot;&gt;
          &lt;/activity&gt;
      &lt;/application&gt;
  &lt;/manifest&gt;
  </code></pre>
  <p>Theme for <code>AuthUI</code>:</p>
  <pre><code>&lt;?xml version=&quot;1.0&quot; encoding=&quot;utf-8&quot;?&gt;
  &lt;resources&gt;
      &lt;style name=&quot;AuthUI_theme&quot; parent=&quot;@style/FirebaseUI&quot;&gt;
          &lt;item name=&quot;android:screenOrientation&quot;&gt;landscape&lt;/item&gt;
      &lt;/style&gt;
  &lt;/resources&gt;
  </code></pre>
  <p>Code:</p>
  <pre><code>val at = AuthUI.getInstance(...).setTheme(R.style.AuthUI_theme).build()
  </code></pre>