Android 可扩展列表返回0作为childCount（）

我有一个可扩展的列表，它填充在init函数中（1个父函数，10个子函数）。当我的应用程序启动（扩展列表）时，我可以看到条目，但

getChildCount（）=0

我需要折叠并展开列表才能使用它。命令

getCount（）

返回正确的值，但这对我没有帮助

我想在开始时标记一个条目（更改背景），但我不能，因为列表似乎是空的

致意

（安卓2.3.3）

编辑：

抱歉耽搁了。下面是我使用的可扩展列表视图的示例

Init函数（称为onCreate（））

private void init_List（）{
Log.i（“函数”，“Init_List（）”）；
mExpandableList=（ExpandableListView）findViewById（R.id.expandableList）；
ArrayList arrayParents=新的ArrayList（）；
ArrayList arrayChildren=新的ArrayList（）；
//我们把父母和孩子放在这里
ListParent=新的ListParent（）；
setTitle（this.getString（R.string.parent_title））；
arrayChildren=新的ArrayList（）；
对于（int i=0；i可能会显示一些代码。到目前为止，我所能想到的是，您正在将子项添加到错误的布局中。如果没有代码片段，则无法入侵。我用代码更新了帖子。您知道问题可能是什么吗？作为替代方案，有人知道如何模拟可扩展列表上的触摸吗？只要我折叠并展开，代码就会工作列表（不是在使用expList.expandgroup（0）时，必须有其他命令）。
private void init_List() {

Log.i("Function", "Init_List()");
mExpandableList = (ExpandableListView) findViewById(R.id.expandableList);

ArrayList<ListParent> arrayParents = new ArrayList<ListParent>();
ArrayList<String> arrayChildren = new ArrayList<String>();

// here we set the parents and the children

ListParent parent = new ListParent();
parent.setTitle(this.getString(R.string.parent_title));

arrayChildren = new ArrayList<String>();

for (int i=0; i<10; i++){
    arrayChildren.add(i+1+". "+names[i]);

}

parent.setArrayChildren(arrayChildren);

// In this array we add the Parent object. We will use the arrayParents
// at the setAdapter
arrayParents.add(parent);

// Sets the adapter that provides data to the list.
mExpandableList.setAdapter(new ListAdapter(this,
        arrayParents));

mExpandableList.setOnChildClickListener(this);
mExpandableList.setOnGroupClickListener(this);
}

private LayoutInflater inflater;
private ArrayList<ListParent> mParent;

public ListAdapter(Context context, ArrayList<ListParent> parent){
    mParent = parent;
    inflater = LayoutInflater.from(context);
}

@Override
//counts the number of group/parent items so the list knows how many times calls getGroupView() method
public int getGroupCount() {
    return mParent.size();
}

@Override
//counts the number of children items so the list knows how many times calls getChildView() method
public int getChildrenCount(int i) {
    return mParent.get(i).getArrayChildren().size();
}

@Override
//gets the title of each parent/group
public Object getGroup(int i) {
    return mParent.get(i).getTitle();
}

@Override
//gets the name of each item
public Object getChild(int i, int i1) {
    return mParent.get(i).getArrayChildren().get(i1);
}

@Override
public long getGroupId(int i) {
    return i;
}

@Override
public long getChildId(int i, int i1) {
    return i1;
}

@Override
public boolean hasStableIds() {
    return true;
}

@Override
//in this method you must set the text to see the parent/group on the list
public View getGroupView(int i, boolean b, View view, ViewGroup viewGroup) {

    ViewHolder holder = new ViewHolder();
    holder.groupPosition = i; //Group position

    if (view == null) {
        view = inflater.inflate(R.layout.list_item_parent, viewGroup,false);
    }

    TextView textView = (TextView) view.findViewById(R.id.list_item_text_view);
    //"i" is the position of the parent/group in the list
    textView.setText(getGroup(i).toString());


    view.setTag(holder);

    //return the entire view
    return view;
}

@Override
//in this method you must set the text to see the children on the list
public View getChildView(int i, int i1, boolean b, View view, ViewGroup viewGroup) {

    ViewHolder holder = new ViewHolder();
    holder.childPosition = i1; //child position
    holder.groupPosition = i; // group position

    if (view == null) {
        view = inflater.inflate(R.layout.list_item_child, viewGroup,false);
    }

    TextView textView = (TextView) view.findViewById(R.id.list_item_text_child);
    //"i" is the position of the parent/group in the list and
    //"i1" is the position of the child
    textView.setText(mParent.get(i).getArrayChildren().get(i1));

    view.setTag(holder);

    //return the entire view
    return view;
}

@Override
public boolean isChildSelectable(int i, int i1) {
    return true;
}

@Override
public void registerDataSetObserver(DataSetObserver observer) {
    /* used to make the notifyDataSetChanged() method work */
    super.registerDataSetObserver(observer);
}


protected class ViewHolder {
        protected int childPosition;
        protected int groupPosition;
 protected Button button;

private String mTitle;
private ArrayList<String> mArrayChildren;

public String getTitle() {
    return mTitle;
}

public void setTitle(String mTitle) {
    this.mTitle = mTitle;
}

public ArrayList<String> getArrayChildren() {
    return mArrayChildren;
}

public void setArrayChildren(ArrayList<String> mArrayChildren) {
    this.mArrayChildren = mArrayChildren;
}