如何将自定义图标和组指示器添加到ExpandableListview android

如何将自定义图标和组指示器添加到ExpandableListview android,android,expandablelistview,Android,Expandablelistview,我正在使用带有自定义组指示符的ExpandableListview。 我在这方面很成功 但是,现在有一种情况,我需要左侧的自定义图标,右侧的组指示器 我如何做到这一点 请建议我如何更改适配器类 list_group.xml <?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:lay

我正在使用带有自定义
组指示符的
ExpandableListview
。 我在这方面很成功 但是,现在有一种情况,我需要左侧的
自定义图标
,右侧的
组指示器
我如何做到这一点

请建议我如何更改适配器类

list_group.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="match_parent"
    android:padding="8dp"
    android:background="#FEFFFF">





    <RelativeLayout android:layout_width="match_parent"
        android:layout_height="wrap_content">

          <ImageView android:id="@+id/shape_icon"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:background="@null"
            android:src="@drawable/off"     
            android:layout_centerVertical="true"
            android:layout_alignParentLeft="true"
            android:padding="5dp"
            />

    <TextView
        android:id="@+id/lblListHeader"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"

        android:layout_centerInParent="true"
        android:paddingLeft="?android:attr/expandableListPreferredItemPaddingLeft"
        android:text="Group Header"
        android:textColor="#272727"
        android:textSize="17dp" />



    <ImageView android:src="@drawable/listview_expander_group"
     android:contentDescription="expand image"
    android:id="@+id/explist_indicator"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerVertical="true"
    android:layout_alignParentRight="true"/>

    </RelativeLayout> 
</RelativeLayout>

ExpandableListAdapter.java

public class ExpandableListAdapter extends BaseExpandableListAdapter {

    private static final int[] EMPTY_STATE_SET = {};
    private static final int[] GROUP_EXPANDED_STATE_SET =
            {android.R.attr.state_expanded};
    private static final int[][] GROUP_STATE_SETS = {
        EMPTY_STATE_SET, // 0
        GROUP_EXPANDED_STATE_SET // 1
    };
    private Context _context;
    private List<String> _listDataHeader; // header titles
    // child data in format of header title, child title
    private HashMap<String, List<String>> _listDataChild;

    public ExpandableListAdapter(Context context, List<String> listDataHeader, HashMap<String, List<String>> listChildData) {
        this._context = context;
        this._listDataHeader = listDataHeader;
        this._listDataChild = listChildData;
    }

    @Override
    public Object getChild(int groupPosition, int childPosititon) {
        return this._listDataChild.get(this._listDataHeader.get(groupPosition))
                .get(childPosititon);
    }

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

    @Override
    public View getChildView(int groupPosition, final int childPosition,
            boolean isLastChild, View convertView, ViewGroup parent) {

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

        if (convertView == null) {
            LayoutInflater infalInflater = (LayoutInflater) this._context
                    .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            convertView = infalInflater.inflate(R.layout.list_child, null);
        }

        TextView txtTitle = (TextView) convertView.findViewById(R.id.list_child_chkbox);




        txtTitle.setText(childText);
        return convertView;
    }

    @Override
    public int getChildrenCount(int groupPosition) {
        Log.e("groupPosition", "kargr "+groupPosition);

            return this._listDataChild.get(this._listDataHeader.get(groupPosition))
                    .size();


    }

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

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

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

    @Override
    public View getGroupView(int groupPosition, boolean isExpanded,
            View convertView, ViewGroup parent) {
        String headerTitle = (String) getGroup(groupPosition);              

        if (convertView == null) {
            LayoutInflater infalInflater = (LayoutInflater) this._context
                    .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            convertView = infalInflater.inflate(R.layout.list_group, null);
        }

        View ind = convertView.findViewById( R.id.explist_indicator);
        if( ind != null ) {
            ImageView indicator = (ImageView)ind;
            if( getChildrenCount( groupPosition ) == 0 ) {
                indicator.setVisibility( View.INVISIBLE );
            } else {
                indicator.setVisibility( View.VISIBLE );
                int stateSetIndex = ( isExpanded ? 1 : 0) ;
                Drawable drawable = indicator.getDrawable();
                drawable.setState(GROUP_STATE_SETS[stateSetIndex]);
            }
        }


        TextView lblListHeader = (TextView) convertView
                .findViewById(R.id.lblListHeader);
        lblListHeader.setTypeface(null, Typeface.BOLD);
        lblListHeader.setText(headerTitle);

        return convertView;
    }

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

    @Override
    public boolean isChildSelectable(int groupPosition, int childPosition) {
        return true;
    }
}
公共类ExpandableListAdapter扩展了BaseExpandableListAdapter{
私有静态final int[]空_STATE_SET={};
私有静态final int[]组\扩展\状态\集=
{android.R.attr.state_expanded};
私有静态最终整数[][]组状态集合={
空的\u状态\u集,//0
组\扩展\状态\集//1
};
私人语境(private Context)(私人语境);;
私有列表_listDataHeader;//头标题
//标题标题、子标题格式的子数据
私有HashMap_listDataChild;
公共ExpandableListAdapter(上下文上下文、列表listDataHeader、HashMap listChildData){
这._context=context;
这。_listDataHeader=listDataHeader;
这。_listDataChild=listChildData;
}
@凌驾
公共对象getChild(int-groupPosition、int-ChildPosition){
返回此。_listDataChild.get(此。_listDataHeader.get(groupPosition))
.get(childpositionon);
}
@凌驾
公共长getChildId(int-groupPosition,int-childPosition){
返回子位置;
}
@凌驾
公共视图getChildView(int groupPosition,final int childPosition,
布尔值isLastChild、视图转换视图、视图组父级){
最终字符串childText=(字符串)getChild(groupPosition,childPosition);
if(convertView==null){
LayoutInflater infalInflater=(LayoutInflater)this.\u上下文
.getSystemService(上下文布局\充气机\服务);
convertView=infalInflater.flate(R.layout.list_child,null);
}
TextView txtTitle=(TextView)convertView.findViewById(R.id.list\u child\u chkbox);
txtTitle.setText(childText);
返回视图;
}
@凌驾
公共整数getChildrenCount(整数组位置){
Log.e(“groupPosition”、“kargr”+groupPosition);
返回此。_listDataChild.get(此。_listDataHeader.get(groupPosition))
.size();
}
@凌驾
公共对象getGroup(int-groupPosition){
返回此。\u listDataHeader.get(groupPosition);
}
@凌驾
public int getGroupCount(){
返回此值。_listDataHeader.size();
}
@凌驾
公共长getGroupId(int-groupPosition){
返回组位置;
}
@凌驾
公共视图getGroupView(int-groupPosition,布尔值isExpanded,
视图(视图、视图组父级){
字符串头文件=(字符串)getGroup(groupPosition);
if(convertView==null){
LayoutInflater infalInflater=(LayoutInflater)this.\u上下文
.getSystemService(上下文布局\充气机\服务);
convertView=infalInflater.充气(R.layout.list_组,空);
}
视图ind=convertView.findViewById(R.id.explist\u指示符);
如果(ind!=null){
ImageView指示器=(ImageView)ind;
如果(getChildrenCount(groupPosition)==0){
指示器。设置可见性(视图。不可见);
}否则{
指示器.setVisibility(View.VISIBLE);
int stateSetIndex=(isExpanded?1:0);
Drawable Drawable=indicator.getDrawable();
drawable.setState(组状态集合[stateSetIndex]);
}
}
TextView lblistheader=(TextView)convertView
.findviewbyd(R.id.lblistheader);
lblListHeader.setTypeface(null,Typeface.BOLD);
lblListHeader.setText(标题);
返回视图;
}
@凌驾
公共布尔表ID(){
返回false;
}
@凌驾
公共布尔值isChildSelectable(int-groupPosition,int-childPosition){
返回true;
}
}

您的代码在我看来是正确的。工作正常吗?正确,但仅适用于“组指示器”。不适用于左侧的自定义图标和右侧的组指示器。。。