java – 我在尝试编写if条件时收到死代码警告

Topic topic = findTopicByID(point.getIDTopic());

if (topic != null)
{
   ...
}
else if (topic == null)
{
    // I get Dead code warning for every thing I write here!
}

有时当我收到警告但一切看起来都没问题时,我重新启动IDE并且我不再收到警告了！但这一次……

编辑：

public Topic findTopicByID(int IDTopic) {
    for (Topic topic : topics)
        if (topic.getID() == IDTopic)
            return topic;
    return null;
}

编辑：
完整代码：

Topic topic = Res.getSchedule().getTopicBox().findTopicByID(point.getIDTopic());
            Section section =     topic.findSectionByID(point.getIDSection());

            if (topic != null)
            {
                View rowView = inflater.inflate(R.layout.daily_day_day_row,lLDoneWorks,false);

                TextView tVLabel = (TextView) rowView.findViewById(R.id.daily_day_day_row_label);
                TextView tVNum = (TextView) rowView.findViewById(R.id.daily_day_day_row_num);
                TextView tVTopic = (TextView) rowView.findViewById(R.id.daily_day_day_row_topic);
                TextView tVSection = (TextView) rowView.findViewById(R.id.daily_day_day_row_section);

                int color = topic.getColor();
                tVLabel.setBackgroundColor(color);
                tVNum.setTextColor(color);
                tVTopic.setTextColor(color);
                tVSection.setTextColor(color);

                tVLabel.setText(topic.getName().substring(0,1).toUpperCase(Locale.US));
                tVNum.setText(Integer.toString(point.getCount()));
                tVTopic.setText(topic.getName());
                if (point.getIDSection() != Point.DEFAULT_SECTION)
                    tVSection.setText(section.getName());

                lLDoneWorks.addView(rowView);
            }
            else if (topic == null)
            {
                TopicArchived archivedTopic = Res.getSchedule().getTopicBox()
                            .findArchivedTopicByID(point.getIDTopic());
                    if (archivedTopic == null)
                        removedTopicsPoint += point.getCount();
                    else
                        archivedTopicsPoint += point.getCount();
            }