Android Bug BaseExpandableListAdapter, getChildView

        @Override

        public View getChildView(final int groupPosition, final int childPosition,

                boolean isLastChild, View convertView, ViewGroup parent) {

            Log.d(TAG, "getChildView() group="+groupPosition+", child="+childPosition);

            final String children = (String) getChild(groupPosition,childPosition);

            if (convertView == null || children != ((ViewHolder) convertView.getTag()).text.getText()) {

                Log.d(TAG, "getChildView() - initialize converView");

                LayoutInflater inflater = LayoutInflater.from(context);

                convertView = inflater.inflate(R.layout.expandable_list_row, null);

                ViewHolder viewHolder = new ViewHolder();

                viewHolder.text = (TextView) convertView.findViewById(R.id.textView1);

                viewHolder.image = (ImageView) convertView.findViewById(R.id.imageCheck);

                convertView.setTag(viewHolder);

                convertView.setOnClickListener(new View.OnClickListener() {

                    @Override

                    public void onClick(View v) {

                        Log.e("test","group="+groupPosition+", child="+childPosition);

                        final ImageView imageCheck = (ImageView)v.findViewById(R.id.imageCheck);

                        imageCheck.setVisibility(ImageView.VISIBLE);

                        int dialogType = getAntecedentType(groupPosition, childPosition);

                        int antecedentId = getAntecedentId(groupPosition, childPosition);

                        if(antecedentId != -1) {

                            MedicalAntecedentDialog dialog = dialogs.get(antecedentId);

                            if(dialog != null) {

                                dialog.show();

                            }

                            else {

                                MedicalAntecedentDialog dialog2 = new MedicalAntecedentDialog(context, children, dialogType);

                                dialogs.append(antecedentId, dialog2);

                                dialog2.show();

                            }

                        }

                    }

                });

            }

            ViewHolder holder = (ViewHolder) convertView.getTag();

            holder.text.setText(children);

            return convertView;

        }

这里出现问题：
if (convertView == null || children != ((ViewHolder) convertView.getTag()).text.getText()) {

                Log.d(TAG, "getChildView() - initialize converView");

Group1里前9项都被初始化了，而第十个和第十一个没有，第十二个元素初始化正确。不知道为什么。。。

Android Bug BaseExpandableListAdapter, getChildView