如何不调用notifyDataSetChanged()时更新ListView的某一项数据

通过结合使用View#getChildAt(int index)和ListView#getFirstVisiblePosition().　
示例如下：

public boolean updateListView(int position, int newProgress) {
int first = mListView.getFirstVisiblePosition();
int last = mListView.getLastVisiblePosition();
if(position < first || position > last) {
    //just update your DataSet
    //the next time getView is called
    //the ui is updated automatically
    return false;
}
else {
    View convertView = mListView.getChildAt(position - first);
    //this is the convertView that you previously returned in getView
    //just fix it (for example:)
    ProgressBar bar = (ProgressBar) convertView.findViewById(R.id.progress);
    bar.setProgress(newProgress);
    return true;
}
}

方法取自StackOverFlow：
[1] http://stackoverflow.com/questions/3724874/how-can-i-update-a-single-row-in-a-listview
[2]http://stackoverflow.com/questions/19025841/how-to-update-some-data-in-a-listview-without-using-notifydatasetchanged