title: Android's selector for selected item does not work
body: <p>I have a listview, where I want to highlight selected items in a custom way.  I'm setting every item properties in the adapter's <code>getView</code> method, including <code>itemView.setSelected(true)</code>.</p>
  
  <p>The main layout defines the listview in the following way:</p>
  
  <pre><code>&lt;ListView
  android:id="@+id/list"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:choiceMode="multipleChoice"
  android:listSelector="@drawable/list_selector" /&gt;
  </code></pre>
  
  <p>(Playing with choice mode does not help either).</p>
  
  <p>The <strong>list_selector</strong> is an almost empty stub:</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:drawable="@android:color/transparent" /&gt;
  &lt;/selector&gt;
  </code></pre>
  
  <p>I don't need specific styles for listview as a whole, so I'd leave a default one, but according to <a href="https://stackoverflow.com/a/10501314/1102014">this answer</a>, we need a selector for a listview for item selector to work. Anyway, without the <strong>list_selector</strong> the problem remains.</p>
  
  <p>The listview item layout:</p>
  
  <pre><code>&lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
      android:layout_width="fill_parent"
      android:layout_height="wrap_content"
      android:minHeight="?android:attr/listPreferredItemHeight"
      android:background="@drawable/listitem_background"
      android:orientation="vertical"&gt;
  </code></pre>
  
  <p>and it references the following <strong>listitem_background</strong> 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_selected="true" android:drawable="@android:color/white" /&gt;
      &lt;item android:drawable="@android:color/transparent" /&gt;
  &lt;/selector&gt;
  </code></pre>
  
  <p>The problem is, that selected items do not have white background.</p>
  
  <p>If I change <code>android:state_selected="true"</code> selector in the <strong>listitem_background</strong> to, for example, <code>android:state_pressed="true"</code>, then the selector starts to work, that is item background becomes white if an item is touched.</p>
  
  <p>So, I suppose, there is an error either in the selectors, or in the way how I select items.</p>
  
  <p>I can write a workaround by setting background from Java or utilizing checkable states, but I want to understand and fix current problem with selectors. Thanks in advance.</p>