What's the effect of implementing the OnClickListener with an Activity?
<p>I don't understand why I have to implement the OnClickListener to use the OnClick-method. Assuming this code:</p>

<pre><code>public class KlickitestActivity extends Activity implements OnClickListener {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
}

@Override
public void onClick(View v) {
    // code what happens when a click is made
}
</code></pre>

<p>From the class OnClickListener I only use the method onClick(View v) - and this one is overwritten. Why can't I just define the onClick-method without implementing the OnClickListener?</p>
