title: Issue with alignment using TextInputLayout and Spinner
body: <p>I'm having an alignment issue with the TextInputLayout and the Spinner, I want the Spinner underline aligned with the EditText underline inside of TextInputLayout. This is what I'm doing:</p>
  
  <pre><code>&lt;LinearLayout
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      android:orientation="horizontal"
      android:gravity="bottom"&gt;
  
      &lt;android.support.design.widget.TextInputLayout
          android:layout_width="0dp"
          android:layout_height="wrap_content"
          android:layout_weight="1"&gt;
  
          &lt;EditText
              android:id="@+id/txt_discipline_code"
              android:layout_width="match_parent"
              android:layout_height="wrap_content"
              android:hint="@string/lbl_input_discipline_code"/&gt;
      &lt;/android.support.design.widget.TextInputLayout&gt;
  
      &lt;Spinner
          android:id="@+id/spnnr_color_discipline_register"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          style="@style/Base.Widget.AppCompat.Spinner.Underlined"&gt;
  
      &lt;/Spinner&gt;
  &lt;/LinearLayout&gt;
  </code></pre>
  
  <p>But the Spinner is a 
  <a href="https://i.stack.imgur.com/QazJE.png" rel="noreferrer">little bit below</a>. Anyone can help me? Thanks in advance.</p>
  
  <p><strong>EDIT:</strong></p>
  
  <p>Here is what I want: <a href="https://i.stack.imgur.com/UHhGF.png" rel="noreferrer"><img src="https://i.stack.imgur.com/UHhGF.png" alt="The Y underline of the EditText equal to the Y underline of the Spinner"></a></p>
  
  <p>I reach this alignment setting the Spinner layout_marginBottom to 1.5dp:</p>
  
  <pre><code>&lt;LinearLayout
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      android:orientation="horizontal"
      android:gravity="bottom"&gt;
  
      &lt;android.support.design.widget.TextInputLayout
          android:layout_width="0dp"
          android:layout_height="wrap_content"
          android:layout_weight="1"&gt;
  
          &lt;EditText
              android:id="@+id/txt_discipline_code"
              android:layout_width="match_parent"
              android:layout_height="wrap_content"
              android:hint="Code"/&gt;
      &lt;/android.support.design.widget.TextInputLayout&gt;
  
      &lt;Spinner
          android:id="@+id/spnnr_color_discipline_register"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          style="@style/Base.Widget.AppCompat.Spinner.Underlined"
          android:layout_marginBottom="1.5dp"&gt;
  
      &lt;/Spinner&gt;
  &lt;/LinearLayout&gt;
  </code></pre>
  
  <p>But I'm afraid this will not work properly in others device, with different size. It is the only solution?</p>