title: Change hover image button without selector on android
body: <p>I have many buttons for my view. Each button has different image resource. <br>I want to change the click and hover effect for each button like this:</p>
  
  <p><strong>Button 1</strong></p>
  
  <pre><code> &lt;Button
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:background="@drawable/btn1_selector"
          android:text="name"
           /&gt; 
  </code></pre>
  
  <p><strong>btn1_selector</strong>:</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="@drawable/hover_btn" android:state_pressed="true"&gt;&lt;/item&gt;
   &lt;item android:drawable="@drawable/hover_btn" android:state_focused="true"&gt;/item&gt;
   &lt;item android:drawable="@drawable/btn1"&gt;&lt;/item&gt;
  
   &lt;/selector&gt;
  </code></pre>
  
  <p><strong>Button 2</strong></p>
  
  <pre><code> &lt;Button
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:background="@drawable/btn2_selector"
          android:text="name"
           /&gt; 
  </code></pre>
  
  <p><strong>btn2_selector</strong>:</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="@drawable/hover_btn" android:state_pressed="true"&gt;&lt;/item&gt;
   &lt;item android:drawable="@drawable/hover_btn" android:state_focused="true"&gt;/item&gt;
   &lt;item android:drawable="@drawable/btn2"&gt;&lt;/item&gt;
  
   &lt;/selector&gt;
  
  // etc...
  </code></pre>
  
  <p>The problem is that I have to create many selectors for all buttons. But I just need to change the hover state for all of them with 1 image <code>hover_btn.png</code>.<br> Is there any way to have a hover state by default <strong>without creating all selectors for all buttons</strong>?  </p>