add onclick listener to predefined button?
<p>I've got the following button in my xml layout file...</p>

<pre><code>    &lt;Button android:layout_width="150dip" android:id="@+id/button1" android:layout_height="50dip" android:text="@string/login" android:layout_marginRight="10dip"&gt;&lt;/Button&gt;
</code></pre>

<p>I'd like to programmatically add an <code>onclick()</code> listener in it's Java file. How would I do this?</p>
