java.lang.IllegalStateException-为什么？？？（Android、ListAdapter）

有时用户会遇到以下异常（我自己无法复制）：

我不明白为什么会这样。我使用线程，但所有底层数据都在主线程中更改。我总是调用_adapter.notifyDataSetChanged（）；数据更改后。请帮帮我！这是我的代码：

    private class SearchList extends LinkedList<PageInfo>
{
    private static final long serialVersionUID = 1L;

    private PagesListAdapter _adapter;

    public PagesListAdapter getAdapter()
    {
        return _adapter;
    }

    public SearchList(ListView listView)
    {
        super();
        _adapter = new PagesListAdapter(activity, this);
        listView.setAdapter(_adapter);
    }

    private void getSuggestions(final String typedText)
    {
        showProgressVisibility(true);
        new Thread(new Runnable() {

            public void run() {
                android.os.Process.setThreadPriority(android.os.Process.THREAD_PRIORITY_BACKGROUND);
                final String[] sugg = TfdMode.getMode().getSuggestions(typedText);

                activity.runOnUiThread(new Runnable() {
                    public void run() {
                        if (sugg != null)
                        {
                            clear();
                            for (String s: sugg) {
                                add(new PageInfo(s, PageInfo.PAGE_SUGGESTION, null));
                            }
                        }
                        _adapter.notifyDataSetChanged();
                        showProgressVisibility(false);
                    }
                });
            }
        }).start();
    }

    public void refresh(final String typedText)
    {
        if (typedText.length() >= 3)
        {
            // use suggestions (separate thread)
            getSuggestions(typedText);
        }
        else
        {
            // use recent
            clear();
            for (PageInfo p: TfdMode.getMode().recentManager.pages) {
                if (p.text.startsWith(typedText)) add(p);
            }

            if (size() == 0 && typedText.length() > 0)
                getSuggestions(typedText);  // if no recent - use suggestions
            else
                _adapter.notifyDataSetChanged();
        }

    }


    public class PagesListAdapter extends ArrayAdapter<PageInfo> {

        private LayoutInflater mInflater;

        public PagesListAdapter(Context context, List<PageInfo> objects) {
            super(context, R.layout.bookmarks_item, R.id.bookmark_title, objects);
            mInflater = (LayoutInflater) context.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
        }

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {   

            final PageInfo b = getItem(position);
            View row = convertView == null ?  mInflater.inflate(R.layout.bookmarks_item, null) : convertView;

            TextView title = (TextView) row.findViewById(R.id.bookmark_title);
            ImageView img = (ImageView) row.findViewById(R.id.bookmark_img);
            ImageView del = (ImageView) row.findViewById(R.id.bookmark_img_del);
            del.setVisibility(View.GONE);

            title.setText(b.text);
            int iconId = b.getIconResId(); 

            if (iconId != -1)
            {
                img.setImageResource(iconId);
                img.setVisibility(View.VISIBLE);
            }
            else
                img.setVisibility(View.INVISIBLE);


            return row;
        }
    }


};

---

您必须从UI线程调用refresh，该线程可能不是主线程。您可以使用它在UI线程上运行某些内容：

Activity.runOnUiThread(Runnable)

---

->

\u适配器。notifyDataSetChanged（）

这必须在UI线程上执行。使用处理程序或runOnUiThread
从何处调用刷新？我从以下位置调用刷新：1。editText的TextChangeListener。2.setDisplayMode方法。这个方法从代码周围的不同地方调用，但是在调用刷新之前，这个方法中涉及了很多UI对象，所以如果从非UI线程调用它，在“刷新”得到调用机会之前，它会失败得更多。
10-12 13:20:29.057: ERROR/AndroidRuntime(24746): FATAL EXCEPTION: Thread-27
10-12 13:20:29.057: ERROR/AndroidRuntime(24746): android.view.ViewRoot$CalledFromWrongThreadException: Only the original thread that created a view hierarchy can touch its views.
10-12 13:20:29.057: ERROR/AndroidRuntime(24746):     at android.view.ViewRoot.checkThread(ViewRoot.java:2837)
10-12 13:20:29.057: ERROR/AndroidRuntime(24746):     at android.view.ViewRoot.invalidateChild(ViewRoot.java:619)
10-12 13:20:29.057: ERROR/AndroidRuntime(24746):     at android.view.ViewRoot.invalidateChildInParent(ViewRoot.java:645)
10-12 13:20:29.057: ERROR/AndroidRuntime(24746):     at android.view.ViewGroup.invalidateChild(ViewGroup.java:2505)
10-12 13:20:29.057: ERROR/AndroidRuntime(24746):     at android.view.View.invalidate(View.java:5192)
10-12 13:20:29.057: ERROR/AndroidRuntime(24746):     at android.view.View.setFlags(View.java:4569)
10-12 13:20:29.057: ERROR/AndroidRuntime(24746):     at android.view.View.setVisibility(View.java:3083)
10-12 13:20:29.057: ERROR/AndroidRuntime(24746):     at com.tfd.mobile.TfdSearch.TfdSearch.showProgressVisibility(TfdSearch.java:315)
10-12 13:20:29.057: ERROR/AndroidRuntime(24746):     at com.tfd.mobile.TfdSearch.TfdSearch.access$0(TfdSearch.java:313)
10-12 13:20:29.057: ERROR/AndroidRuntime(24746):     at com.tfd.mobile.TfdSearch.TfdSearch$SearchList.getSuggestions(TfdSearch.java:783)
10-12 13:20:29.057: ERROR/AndroidRuntime(24746):     at com.tfd.mobile.TfdSearch.TfdSearch$SearchList.refresh(TfdSearch.java:823)
10-12 13:20:29.057: ERROR/AndroidRuntime(24746):     at com.tfd.mobile.TfdSearch.TfdSearch$8$1.run(TfdSearch.java:443)
10-12 13:20:29.057: ERROR/AndroidRuntime(24746):     at java.lang.Thread.run(Thread.java:1096)

Activity.runOnUiThread(Runnable)