【求教】android：listview优化相关，为什么中文很卡，英文就比较顺滑了？求答案！求解释！求教育！解决方案

    public class PrivacyAdapter extends BaseAdapter {

        public Context context;
        public List<PrivacyText> list;

        public HashMap<Integer, View> m = new HashMap<Integer, View>(); 
        /**
         * 
         */
        public PrivacyAdapter(Context context, List<PrivacyText> list) {
            this.context = context;
            this.list = list;
        }

        @Override
        public int getCount() {
            return list.size();
        }

        @Override
        public Object getItem(int position) {
            return list.get(position);
        }
        @Override
        public long getItemId(int position) {
            return position;
        }

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            ViewHoder hoder = null;
            final PrivacyText privacyText = list.get(position);
            convertView = m.get(position);
            if (convertView != null){
                hoder = (ViewHoder) convertView.getTag();
                return convertView;
            }else {
                hoder = new ViewHoder();
                convertView = LayoutInflater.from(context).inflate(
                    R.layout.privacy_text_list, null);
                convertView.setTag(hoder);
                m.put(position, convertView);
            }
            
            hoder.privacyTitle = (TextView) convertView
                    .findViewById(R.id.privacy_text_title);
            hoder.privacyBody = (MTextView) convertView
                    .findViewById(R.id.privacy_text_body);
            hoder.privacyBody.setText(list.get(position).pribacyBody);
            if(privacyText.privacyTitle != null){
                hoder.privacyTitle.setVisibility(View.VISIBLE);
                hoder.privacyTitle.setText(privacyText.privacyTitle);
            }else{
                hoder.privacyTitle.setVisibility(View.GONE);
            }
            return convertView;
        }
        public class ViewHoder {
            TextView privacyTitle;
            MTextView privacyBody;
        }

    }


/**
     * 初始化privacy页面
     */
    public  void init() {
        
        listView =(ListView) findViewById(R.id.login_policy_listview);
        PrivacyAdapter adapter = new PrivacyAdapter(this, list);
        listView.setAdapter(adapter);
        listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);
        listView.setFastScrollAlwaysVisible(true);
        listView.setFastScrollEnabled(true);
        listView.setDivider(null);
        listView.setScrollBarStyle(ListView.SCROLLBARS_OUTSIDE_INSET);