android可扩展列表视图从子onclick侦听器获取组视图

我在我的应用程序中有一个可扩展的列表视图，每个组都有一个文本视图，比如说T有动态值，每个组都有一个子组。我想引用该组的T textview对象，该组的子项已被单击，因此我可以根据单击的子项相应地更改T的值

如果是groupClickListener，我可以很容易地获取TextView对象，但是如果是childClickListener，我无法获取。。。请看这两个

mExpandableListView.setOnGroupClickListener（新OnGroupClickListener（）{

setOnChildClickListener（新的OnChildClickListener（））{

---

我希望它对您有用。

使用“父级”上的

getExpandableListAdapter（）

，并相应地定义自定义类。 然后修改自定义对象中的值-ExpandableListView将自动更新。 例如：

---

不太清楚为什么会发生这种情况-似乎ExpandableAdapter正在跟踪对模型本身的更改…我没有时间检查有关这方面的详细信息…但它可以工作。

请显示您所做的工作。如何从中获取对TextView对象的引用，以及这里的listDataChild是什么。

        @Override
        public boolean onGroupClick(ExpandableListView parent, View v,
                int groupPosition, long id) {
            // TODO Auto-generated method stub
            TextView moreTextView = (TextView)v.findViewById(R.id.group_more);  // this works fine

            }
            return false;
        }
    });

        @Override
        public boolean onChildClick(ExpandableListView parent, View v,
                int groupPosition, int childPosition, long id) {
            // TODO Auto-generated method stub
            boolean isExpanded=false;
            if(groupStatus[groupPosition]==1)
            {
                isExpanded=true;
            }
            View v1 = parent.getExpandableListAdapter().getGroupView(groupPosition, isExpanded, v, parent);
            TextView moreTextView = (TextView)v1.findViewById(R.id.group_more);  // doesn,t work as v1 is null all the times
            return false;
        }
    });

// Listview on child click listener
expListView.setOnChildClickListener(new OnChildClickListener() {

    @Override
    public boolean onChildClick(ExpandableListView parent, View v,
            int groupPosition, int childPosition, long id) {
        // TODO Auto-generated method stub
        Toast.makeText(
                getApplicationContext(),
                listDataHeader.get(groupPosition)
                        + " : "
                        + listDataChild.get(
                                listDataHeader.get(groupPosition)).get(
                                childPosition), Toast.LENGTH_SHORT)
                .show();
        return false;
    }
});

@Override
public boolean onChildClick(ExpandableListView _parent, View _v,
        int _groupPosition, int _childPosition, long _id
) {
    // do required casts for your custom objects for groups and childs.
    // In my case, I'm using class "Group"
    Group group=(Group)parent.getExpandableListAdapter().getGroup(_groupPosition);
    // In my case, I'm using class "Child"
    Child item=(Child)optionsList.getExpandableListAdapter().getChild(_groupPosition, _childPosition);
    // In my custom Group class, I've defined a field that populates a different
    // TextView within the Group layout - so, getter/setter method for "selection" were defined.
    // The ExpandableListView will be updated automatically based on the adapter updates.
    group.setSelection(item.getName());
    return true;
}