title: Border color on Android button
body: <p>I have a button created and have set the background color and text color as can be seen below. My question is: how do I set the buttons border color? I want to set the border color to white</p>
  
  <p>Here is the button in my <code>res -&gt; layout -&gt; main_nav.xml</code></p>
  
  <pre><code>&lt;Button 
          android:id="@+id/btn_emergency"
          style="@style/buttonStyle"
          android:layout_width="fill_parent"
          android:layout_height="wrap_content"
          android:layout_weight="1"
          android:text="Contact and Emergency" 
          android:onClick="onClickHandleStates" /&gt;
  </code></pre>
  
  <p>And here is its associated style in <code>res -&gt; values -&gt; styles</code>. The first 2 "items" work fine on their own. The final "item" was my attempt at changing button border to white without success. </p>
  
  <pre><code>&lt;!-- The button styles --&gt;
  &lt;style name="buttonStyle"&gt;
      &lt;item name="android:textColor"&gt;#ffffff&lt;/item&gt;
      &lt;item name="android:background"&gt;#80000000&lt;/item&gt;
  
      &lt;item name="android:button"&gt;
          &lt;shape
              android:shape="rectangle" &gt;
              &lt;stroke
                  android:width="0.5dp"
                  android:color="#ffffff" /&gt;  
          &lt;/shape&gt;
      &lt;/item&gt;
  &lt;/style&gt;
  </code></pre>