title: Need to change the color of an icon. tint does not work
body: <p>This is my imageview:</p>
  
  <pre><code>  &lt;ImageView
                  android:id="@+id/action_add_iv"
                  android:layout_width="20dp"
                  android:layout_height="20dp"
                  android:layout_centerVertical="true"
                  android:layout_marginRight="12dp"
                  android:tint="@color/gray32"
                  android:background="@drawable/plus_selector"
                  android:text="0" /&gt;
  </code></pre>
  
  <p>This is my selector:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;selector xmlns:android="http://schemas.android.com/apk/res/android"&gt;
  &lt;item android:state_pressed="true"&gt;
      &lt;bitmap android:alpha="160" android:src="@drawable/btn_plus_green" android:tint="@color/gray32" /&gt;
  &lt;/item&gt;
  &lt;item android:drawable="@drawable/btn_plus_green" android:state_pressed="false" android:tint="@color/gray32" /&gt;
  &lt;/selector&gt;
  </code></pre>
  
  <p>Now if I press on the icon, it becomes gray, like I want. But if it's not pressed, it shows green. Why doesn't the tint also apply for state_pressed=false?</p>