Android custom list -- SimpleAdapter

Write a custom List and reload SimpleAdapter. In the previous List, there were only three options, and the fourth one was added. The fourth image is displayed in the same way as the first one. No change is correct. Finally, I found that a non-empty judgment is added to the Adapter. If convertView has a value, it will not be parsed ,. After deletion, the Bug-> resoved [java] public class PersonsSelectAdapter extends SimpleAdapter {... @ Override public View getView (int position, View convertView, ViewGroup parent) {if (convertView = null ){...}