title: Padding not working on ImageButton
body: <p>In an app I am working on, I have several ImageButtons. Each ImageButton has a background and content in the form of a drawable. Right now the drawable is at maximum size within the confines of the ImageButton, but I want it to scale down so I need to add some padding. The thing is that when I try to do that, it doesn't have any effect. My XML is as follows for each ImageButton:</p>
  
  <pre><code>&lt;ImageButton
      android:id="@+id/button_zero"
      android:layout_width="0dip"
      android:layout_height="wrap_content"
      android:layout_weight="1"
      android:padding="10dip"
      android:src="@drawable/button_zero"
      android:background="@drawable/button_background" /&gt;
  </code></pre>
  
  <p>Any ideas why the padding doesn't do anything?</p>
  
  <p><strong>Full XML code:</strong></p>
  
  <pre><code>&lt;RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
      xmlns:tools="http://schemas.android.com/tools"
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      android:background="#222222"
      tools:context=".Main" &gt;
  
      &lt;LinearLayout
          android:layout_width="match_parent"
          android:layout_height="wrap_content"
          android:orientation="vertical" &gt;
  
          &lt;!-- Row One --&gt;
          &lt;LinearLayout
              android:layout_width="match_parent"
              android:layout_height="wrap_content"
              android:orientation="horizontal" &gt;
              &lt;ImageButton
                  android:id="@+id/button_zero"
                  android:layout_width="0dip"
                  android:layout_height="wrap_content"
                  android:layout_weight="1"
                  android:padding="10dip"
                  android:src="@drawable/button_zero"
                  android:background="@drawable/button_front" /&gt;
              &lt;ImageButton
                  android:id="@+id/button_one"
                  android:layout_width="0dip"
                  android:layout_height="wrap_content"
                  android:layout_weight="1"
                  android:padding="10dip"
                  android:src="@drawable/button_one"
                  android:background="@drawable/button_front" /&gt;
              &lt;ImageButton
                  android:id="@+id/button_two"
                  android:layout_width="0dip"
                  android:layout_height="wrap_content"
                  android:layout_weight="1"
                  android:padding="10dip"
                  android:src="@drawable/button_two"
                  android:background="@drawable/button_front" /&gt;
              &lt;ImageButton
                  android:id="@+id/button_three"
                  android:layout_width="0dip"
                  android:layout_height="wrap_content"
                  android:layout_weight="1"
                  android:padding="10dip"
                  android:src="@drawable/button_three"
                  android:background="@drawable/button_front" /&gt;
              &lt;ImageButton
                  android:id="@+id/button_four"
                  android:layout_width="0dip"
                  android:layout_height="wrap_content"
                  android:layout_weight="1"
                  android:padding="10dip"
                  android:src="@drawable/button_four"
                  android:background="@drawable/button_front" /&gt;
          &lt;/LinearLayout&gt;
  
          ... same for other rows
  
      &lt;/LinearLayout&gt;
  </code></pre>
  
  <p></p>