gistfile1.java

//OnClickListener stub
public class ButtonListener implements OnClickListener {
  
	private UpdateUIListener mUIListener;

	public ButtonListener(UpdateUIListener uiListener){
		mUIListener = uiListener;
	}

	@Override
	public void onClick(View v) {
		switch(v.getId()){
		case R.id.other_buttons:
			doStuff();
			break;
		//whatever other buttons you have
		case R.id.update_ui_button:
			updateUI();
			break;
		}
	}

	private void updateUI() {
		mUIListener.updateUI("Whatever you want to send to update the UI");
	}
	
	public interface UpdateUIListener{
		public abstract void updateUI(String text);
	}
}