ExpandableListView의 기본 사용(접을 수 있는 목록)

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/ res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="horizontal"
    android:padding="5dp"
    android:Background="../style/images/android -tutorial-expandablelistview.html">

    <ImageView
        android:id="@+id/img_icon"
        android:layout_width="48dp"
        android:layout_height="48dp"
        및 roid:src="@mipmap /iv_lol_icon1"
        android:focusable="false"/>

    <TextView
        android:id="@+id/tv_name"
        android:layout_width="wrap_content"
        android:layout_height=" Wrap_content"
        안드로이드: layout_marginLeft="15dp"
        android:layout_marginTop="15dp"
        android:focusable="false"
        android:text="提莫"
        android:textSize="18sp" />

< ;/LinearLayout>

/**
 * 2015년 9월 25일 0025에 Jay가 작성함.
 */
public 클래스 MyBaseExpandableListAdapter는 BaseExpandableListAdapter를 확장합니다.{

    private ArrayList<Group> gData;
    비공개 ArrayList<ArrayList<Item>> iData;
    private Context mContext;

    public MyBaseExpandableListAdapter(ArrayList<Group> gData,ArrayList<ArrayList<Item>> iData, Context mContext) {
        this.gData = gData;
        this.iData = iData;
        this.mContext = mContext;
    }

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

    @Override
    public int getChildrenCount(int groupPosition) {
        iData.get(groupPosition).size(를 반환합니다. );
    }

    @Override
    public Group getGroup(int groupPosition) {
        return gData.get(groupPosition);
    }

    @Override
    public Item getChild(int groupPo sition, int childPosition) {
        return iData.get( groupPosition).get(childPosition);
    }

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

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

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

    //取得用于显示给定分组的视图. 这个方法仅返回分组的视图对象
    @Override
    공개 View getGroupView(int groupPosition, boolean isExpanded, View convertView, ViewGroup 상위) {

        ViewHolderGroup groupHolder;
       if(convertView == null){
            convertView = LayoutInflater.from(m Context).inflate(
                   R.layout.item_exlist_group, parent, false);
           groupHolder = new ViewHolderGroup();
           groupHolder.tv_group_name = (TextView) convertView.findViewById(R.id.tv_group_name);
            convertView.setTag( groupHolder);
        }else{
            groupHolder = (ViewHolderGroup) ConvertView.getTag();
        }
        groupHolder.tv_group_name.setText(gData.get(groupPosition).getgName());
        return ConvertView;
    }

    //取得显示给置的数据用视图를 결정하는 방법 ㅋㅋㅋ
            convertView = LayoutInflater.from(mContext).inflate(
R.layout.item_exlist_item, parent, false);
            itemHolder = new ViewHolderItem();
           itemHolder.img_icon = (ImageView) convertView.findViewById(R.id.img_icon);
            itemHolder.tv_name = (TextView) convertView.findViewById( R.id.tv_name);
            convertView.setTag(itemHolder);
}else{
                                                                                              ItemHolder. tv_name.setText(iData.get (groupposition) .get (childposition) .getINAME ());
Return ConvertView
}

// 후속 목록을 선택할 수 있는지 여부@oublic boolean (Int GroupPosition , Int Childposition) {
Return True;
}


private static class ViewHolderGroup{
private TextView tv_group_name;
}

static class ViewHolderItem{
private ImageView img_ icon;
               private TextView tv_name;
     }

}

추신: 하위 목록에 저장된 데이터가 반드시 ArrayList<ArrayList>를 사용하려면 필요에 따라 정의해야 하는 것은 아닙니다~

마지막으로 MainActivity 및 Java 코드의 레이아웃:

레이아웃 파일: Activity_main.xml:

< ;RelativeLayout xmlns:android="http://schemas .android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding= "5dp"
tools:context=".MainActivity">

<ExpandableListView
android:id="@+id/exlist_lol"
android:layout_width="match_parent "
android:layout_height ="match_parent"
  android: childDivider="#E02D2F"/>

</RelativeLayout>

MainActivity.java：