Android ExpandableListView的组视图充气错误

我正在我的项目中实现ExpandableListView，我有以下问题

在我提供给扩展BaseExpandableListAdapter的expandablelistview适配器的列表中，有一个名为Type的变量。仅基于类型1、2或3的值，我正在膨胀3种不同布局中的一种。因此，我的getGroupView

@Override
public View getGroupView(int groupPosition, boolean isExpanded,
        View convertView, ViewGroup parent) {

    LayoutInflater inflater = (LayoutInflater) context.getSystemService
(Activity.LAYOUT_INFLATER_SERVICE);

    final int type =  ((cast) getGroup(groupPosition)).getType();

    if(convertView == null){
        if(type == 1){
            convertView = inflater.inflate(R.layout.layout1, parent, false);
        }else if(type == 2){
            convertView = inflater.inflate(R.layout.layout2, parent, false);
        }else if(type == 3){
            convertView = inflater.inflate(R.layout.layout3, parent, false);
        }   
    }

    TextView text = (TextView) convertView.findViewById(R.id.tvID);

    text.setText("some text");

    return convertView;
}

因此，当活动最初加载时，一切正常。但是当我扩展第一个组时，下面的组的布局也会改变。展开第二组，并将组3、4、5……的布局改为1……等。当我崩溃时，一切都很好

这里有什么问题吗？我遗漏了什么吗？我的方法正确吗

此外，由于我正在膨胀3种不同的布局，我如何获得对不同元素的引用SimageView、textview，。。。在那些布局中，以便我可以用所需的值填充它们

编辑：完整适配器实现

public class EventExpandableListViewAdapter extends BaseExpandableListAdapter{

/* Class1 {
    var1;
    var2;
    ...
    ArrayList<Class2> var3;
}
*/

Context context;
final List<Class1> events;

public EventExpandableListViewAdapter(Context context, ArrayList<Class1> events) {
    this.context = context;
    this.events = events;
}


@Override
public Object getChild(int groupPosition, int childPosition) {

    return events.get(groupPosition).getVar3().get(childPosition);
}

@Override
public long getChildId(int groupPosition, int childPosition) {

    return childPosition;
}

@Override
public View getChildView(int groupPosition, int childPosition,
        boolean isLastChild, View convertView, ViewGroup parent) {
    LayoutInflater inflater = (LayoutInflater) context.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);

    if(convertView == null){

        convertView = inflater.inflate(R.layout.childlayout, parent, false);
    }

    return convertView;
}

@Override
public int getChildrenCount(int groupPosition) {
    return events.get(groupPosition).getVar3().size();
}

@Override
public Object getGroup(int groupPosition) {
    return events.get(groupPosition);
}

@Override
public int getGroupCount() {
    return events.size();
}

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

@Override
public View getGroupView(int groupPosition, boolean isExpanded,
        View convertView, ViewGroup parent) {

    LayoutInflater inflater = (LayoutInflater) context.getSystemService
(Activity.LAYOUT_INFLATER_SERVICE);

    final int type =  ((cast) getGroup(groupPosition)).getType();

    if(convertView == null){
        if(type == 1){
            convertView = inflater.inflate(R.layout.layout1, parent, false);
        }else if(type == 2){
            convertView = inflater.inflate(R.layout.layout2, parent, false);
        }else if(type == 3){
            convertView = inflater.inflate(R.layout.layout3, parent, false);
        }   
    }

    TextView text = (TextView) convertView.findViewById(R.id.tvID);

    text.setText("some text");

    return convertView;
}

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

@Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
    return true;
}

}

---

编辑2：我试图创建3个不同布局的幻觉，只使用1个布局，并根据类型的值隐藏/显示不同的视图。仍然是相同的结果。

从0开始检查以下类型的条件：

    if(type == 0){
        convertView = inflater.inflate(R.layout.layout1, parent, false);
    }else if(type == 1){
        convertView = inflater.inflate(R.layout.layout2, parent, false);
    }else if(type == 2){
        convertView = inflater.inflate(R.layout.layout3, parent, false);
    }   

---

用完整的文本更新您的问题adapter@EngrWaseemArain类型的值是我为测试目的硬编码的东西。。我知道确切的价值。。您的解决方案有何帮助？