Using onClick attribute in layout xml causes a NoSuchMethodException in Android dialogs

I have created a custom dialog and a layout xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">
    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Tap Me"
        android:onClick="dialogClicked" />
</LinearLayout>

In the dialog class I've implemented the method "dialogClicked(View v)":

public class TestDialog extends Dialog {

 public TestDialog(final Context context)
 {
  super(context);
 }

 @Override
 protected void onCreate(final Bundle savedInstanceState)
 {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.dialog);
 }

 public void dialogClicked(final View view)
 {
  System.out.println("clicked");
 }

}

When I tap the button I get a NoSuchMethodException 'dialogClicked'. Setting the onClick handler in layout xml works fine for activities, but not in dialogs. Any ideas? What I'm doing wrong?