如何重新加载选项卡中存在的活动?

• Restarting an activity in a single tab in a TabActivity?
• Communication between TabActivity and the embedded activity
• Android TabHost: update tabs from tab’s activity

所以谢谢贾斯汀的链接。在尝试了许多不同的方法之后,我终于找到了工作(我们将尽可能地缩短它,但是为了减少混乱,我们将在实际代码中编写它。)

ListAdapter adapter;

public void onCreate(Bundle savedInstanceState) {
    super.onCreate(SavedInstanceState);
    rssparser();
    adapter = new MyCustomAdapter(this, R.layout.list_item, rsstitles);
    setListAdapter(adapter);
}

public void onResume() {
    super.onResume();

    rsstitles.clear();  // this line is what finally got the notifyDataSetChanged() to work

    rssparser();
    ((MyCustomAdapter) adapter).notifyDataSetChanged();
    setListAdapter(getListAdapter());
}