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我创建了一个ExpandableListView搜索活动，它显示 3 个组 -曲目、艺术家、专辑。当用户在 中键入文本时EditText，相应的搜索结果会显示在 ExpandableListView 中。

问题： 当用户单击任何子项时，我想执行一些操作。起初这个功能工作正常，但是当我向上或向下滚动列表时，OnChildClickListener停止工作。并且没有孩子在点击时被选中。

这是视图更新和位置的问题吗？

注意：我正在使用BaseExpandableListAdapter

这是代码：（我已经粘贴了我认为必要的内容。如果需要其他部分，请告诉我）：

    protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.search);

            etSearchBar = (EditText) findViewById(R.id.etSearchBar);
            etSearchBar.addTextChangedListener(this);

            lvExpSearchResult = (ExpandableListView) findViewById(R.id.lvExpSearchResult);
            lvExpSearchResult.setGroupIndicator(null);
            lvExpSearchResult.setChildIndicator(null);
            lvExpSearchResult.setOnTouchListener(this);
            lvExpSearchResult.setOnChildClickListener(this);
        }

    @Override
        public boolean onChildClick(ExpandableListView parent, View view, int groupPosition,
                int childPosition, long id) {
            lvExpSearchResult.smoothScrollToPosition(groupPosition);
            Toast.makeText(SearchActivity.this, group[groupPosition], Toast.LENGTH_SHORT).show();
            //Toast.makeText(SearchActivity.this, children[groupPosition][childPosition], Toast.LENGTH_LONG).show();
            return true;
        }

@Override
    public void onTextChanged(CharSequence s, int start, int before, int count) {
        if (s.length() > 0) {
            group = new String[] { "Tracks", "Albums", "Artists" };
            ArrayList<String> result = null;

            result = getQueryResult(MediaStore.Audio.Media.TITLE);
            result = new Utilities().removeDuplicatesAL(result);
            String[] tracks = result.toArray(new String[result.size()]);

            result = getQueryResult(MediaStore.Audio.Media.ALBUM);
            result = new Utilities().removeDuplicatesAL(result);
            String[] albums = result.toArray(new String[result.size()]);

            result = getQueryResult(MediaStore.Audio.Media.ARTIST);
            result = new Utilities().removeDuplicatesAL(result);
            String[] artists = result.toArray(new String[result.size()]);

            children = new String[][] { tracks, albums, artists };

            adapter = new SearchAdapter(this, group, children);
        } else {
            adapter = new SearchAdapter(this, new String[0], new String[0][0]);
        }
    }

    @Override
    public void afterTextChanged(Editable s) {
        lvExpSearchResult.setAdapter(adapter);
    }

// BaseExpandableListAdapter code - getGroupView & getChildView
@Override
    public View getChildView(int groupPosition, int childPosition,
            boolean isLastChild, View convertView, ViewGroup parent) {
        TextView childRow = (TextView) convertView;
        if (childRow == null) {
            LayoutInflater inflator = (LayoutInflater) context
                    .getSystemService(context.LAYOUT_INFLATER_SERVICE);
            try {
                childRow = (TextView) inflator.inflate(
                        android.R.layout.simple_expandable_list_item_1, null);
            } catch (Exception e) {
                Toast.makeText(context, e.toString(), Toast.LENGTH_SHORT)
                        .show();
            }
        }
        childRow.setText(children[groupPosition][childPosition]);
        return childRow;
    }

@Override
    public View getGroupView(int groupPosition, boolean isExpanded,
            View convertView, ViewGroup parent) {
        TextView headerRow = (TextView) convertView;
        if (headerRow == null) {
            LayoutInflater inflator = (LayoutInflater) context
                    .getSystemService(context.LAYOUT_INFLATER_SERVICE);
            headerRow = (TextView) inflator.inflate(
                    android.R.layout.simple_expandable_list_item_1, null);
        }
        headerRow.setTypeface(Typeface.DEFAULT_BOLD);
        headerRow.setText(group[groupPosition]);

        ExpandableListView eLV = (ExpandableListView)parent;
        eLV.expandGroup(groupPosition);

        return headerRow;
    }
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1 回答 1

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我认为你的孩子方法问题，只是这个代码实现并尝试一下，

    @Override
    public boolean isChildSelectable(int groupPosition, int childPosition) {
        return ;
        // false = default and do not get click 
        // true = get the focus of child and got the click
    }
于 2013-06-29T10:16:27.193 回答