title: ImageButton tint selector is not changing color based on state
body: <p>I want to change <code>ImageButton</code> icon color tint based on <code>Button</code> state. Its working with background for generic <code>Button</code>, but for <code>ImageButton</code> icon, its not working at all. Its still in &quot;enabled&quot; state even if I disable it.</p>
  <pre><code>&lt;style name=&quot;newbutton.iconified&quot;&gt;
      &lt;item name=&quot;android:layout_width&quot;&gt;@dimen/button_height&lt;/item&gt;
      &lt;item name=&quot;android:layout_height&quot;&gt;@dimen/button_height&lt;/item&gt;
      &lt;item name=&quot;android:minHeight&quot;&gt;0dp&lt;/item&gt;
      &lt;item name=&quot;android:minWidth&quot;&gt;0dp&lt;/item&gt;
      &lt;item name=&quot;android:paddingStart&quot;&gt;@dimen/small_padding_start&lt;/item&gt;
      &lt;item name=&quot;android:paddingEnd&quot;&gt;@dimen/small_padding_end&lt;/item&gt;
      &lt;item name=&quot;android:paddingTop&quot;&gt;@dimen/small_padding_top&lt;/item&gt;
      &lt;item name=&quot;android:paddingBottom&quot;&gt;@dimen/small_padding_bottom&lt;/item&gt;
      &lt;item name=&quot;android:background&quot;&gt;@null&lt;/item&gt;
      &lt;item name=&quot;android:tint&quot;&gt;@color/buttons_button_iconified&lt;/item&gt;
  &lt;/style&gt;
  </code></pre>
  <p>buttons_button_iconified.xml</p>
  <pre><code>&lt;selector
      xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;
      android:exitFadeDuration=&quot;200&quot;
      android:enterFadeDuration=&quot;200&quot;&gt;
      &lt;item
          android:state_enabled=&quot;false&quot;
          android:alpha=&quot;0.4&quot;
          android:color=&quot;@color/button_primary&quot;
          /&gt;
      &lt;item
          android:state_pressed=&quot;true&quot;
          android:alpha=&quot;0.4&quot;
          android:color=&quot;@color/button_primary&quot;
          /&gt;
      &lt;item
          android:alpha=&quot;1&quot;
          android:color=&quot;@color/button_primary&quot;/&gt;
  &lt;/selector&gt;
  </code></pre>