ExpandableListView分类

 资源文件xml：

<ExpandableListView    android:id="@+id/expandable_view_id"    android:layout_width="match_parent"    android:layout_height="wrap_content"    android:layout_marginLeft="10dp" />

初始化：

private void init() {    super.onContentChanged();    listView = (ExpandableListView) findViewById(R.id.expandable_view_id);    listView.setDivider(null);    // 每个分组下的每个子项的 GridView 数据集合    itemList.add(mDatas_jiazheng);    itemList.add(mDatas_jiaoyu);    itemList.add(mDatas_liren);    itemList.add(mDatas_xiuxian);    itemList.add(mDatas_yundong);    itemList.add(mDatas_meishi);    itemList.add(mDatas_hua);    itemList.add(mDatas_shi);    // 创建适配器    MyExpandableListViewAdapter adapter = new MyExpandableListViewAdapter(ClassifydetilActivity.this, mclassify, itemList);    listView.setAdapter(adapter);    // 隐藏分组指示器    listView.setGroupIndicator(null);    // 默认展开第一组    listView.expandGroup(0);}

数据源：

private void initData() {    mclassify = new ArrayList<Classify>();    mclassify.add(new Classify("蔬菜", R.mipmap.sucai));    mclassify.add(new Classify("水果", R.mipmap.shuiguo));    mclassify.add(new Classify("海鲜", R.mipmap.haixian));    mclassify.add(new Classify("特价区", R.mipmap.tejiaqu));    mclassify.add(new Classify("蛋类", R.mipmap.danlei));    mclassify.add(new Classify("肉禽", R.mipmap.rouqing));    mclassify.add(new Classify("积分商城", R.mipmap.jifengshangcheng));    mclassify.add(new Classify("畅销区", R.mipmap.changxiaoqu));}

 数据封装：

private List<String> mDatas_jiazheng = new ArrayList<>(Arrays.asList("土豆", "黄瓜", "小白菜", "茄子", "豆芽", "豆腐", "葱花", "小米"));private List<String> mDatas_jiaoyu = new ArrayList<>(Arrays.asList("苹果", "鸭梨", "葡萄", "哈密瓜", "红提子", "青提子", "驴蹄子", "马蹄子"));private List<String> mDatas_liren = new ArrayList<>(Arrays.asList("大鱼", "小鱼", "海带", "带鱼", "虾米", "螃蟹", "娃娃鱼", "鲤鱼"));private List<String> mDatas_xiuxian = new ArrayList<>();private List<String> mDatas_yundong = new ArrayList<>();private List<String> mDatas_meishi = new ArrayList<>();private List<String> mDatas_hua = new ArrayList<>();private List<String> mDatas_shi = new ArrayList<>();

 

加载数据：

public class ClassifydetilActivity extends AppCompatActivity {    private ExpandableListView listView;    public static List<Classify> mclassify;    /**     * 所有分组的所有子项的 GridView 数据集合     */    public static List<List<String>> itemList = new ArrayList<>();    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_classifydetil);        initData();        init();    }

    数据源：

public class MyExpandableListViewAdapter extends BaseExpandableListAdapter {    private Context mContext;    /**     * 每个分组的名字的集合     */    private List<Classify> groupList;    /**     * 所有分组的所有子项的 GridView 数据集合     */    private List<List<String>> itemList;    private NoScrollGridView gridView;    public MyExpandableListViewAdapter(Context context, List<Classify> groupList,                                       List<List<String>> itemList) {        mContext = context;        this.groupList = groupList;        this.itemList = itemList;    }    @Override    public int getGroupCount() {        return groupList.size();    }    @Override    public int getChildrenCount(int groupPosition) {        return 1;    }    @Override    public Object getGroup(int groupPosition) {        return groupList.get(groupPosition);    }    @Override    public Object getChild(int groupPosition, int childPosition) {        return itemList.get(groupPosition).get(childPosition);    }    @Override    public long getGroupId(int groupPosition) {        return groupPosition;    }    @Override    public long getChildId(int groupPosition, int childPosition) {        return childPosition;    }    @Override    public boolean hasStableIds() {        return false;    }    @Override    public View getGroupView(int groupPosition, boolean isExpanded, View convertView, ViewGroup            parent) {        if (null == convertView) {            convertView = View.inflate(mContext, R.layout.classify_list_ltem, null);        }        ImageView ivGroup = (ImageView) convertView.findViewById(R.id.imageView2);        ImageView ivGroupHead = (ImageView) convertView.findViewById(R.id.classify_head);        TextView tvGroup = (TextView) convertView.findViewById(R.id.classify_text);        // 如果是展开状态，就显示展开的箭头，否则，显示折叠的箭头        if (isExpanded) {            ivGroup.setImageResource(R.mipmap.icon_xiangxia);        } else {            ivGroup.setImageResource(R.mipmap.icon_xiangshang);        }        // 设置分组组名        tvGroup.setText(groupList.get(groupPosition).name);        //设置分组图标        ivGroupHead.setImageResource(groupList.get(groupPosition).headId);        return convertView;    }    @Override    public View getChildView(final int groupPosition, final int childPosition, boolean isLastChild, View            convertView, ViewGroup parent) {        if (null == convertView) {            convertView = View.inflate(mContext, R.layout.gradview, null);        }        // 因为 convertView 的布局就是一个 GridView，        // 所以可以向下转型为 GridView        gridView = (NoScrollGridView) convertView;        // 创建 GridView 适配器        MyGridViewAdapter gridViewAdapter = new MyGridViewAdapter(mContext, itemList.get                (groupPosition));        gridView.setAdapter(gridViewAdapter);        gridView.setOnItemClickListener(new AdapterView.OnItemClickListener() {            @Override            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {                Toast.makeText(mContext, "点击了第" + (groupPosition + 1) + "组，第" +                        (position + 1) + "项", Toast.LENGTH_SHORT).show();            }        });        return convertView;    }    @Override    public boolean isChildSelectable(int groupPosition, int childPosition) {        return false;    }

 

 item_lsit:

<RelativeLayout    android:padding="8dp"    android:orientation="horizontal"    android:layout_width="match_parent"    android:layout_height="wrap_content">    <TextView        android:id="@+id/classify_text"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:textSize="18sp"        android:text="家政服务"        android:layout_centerVertical="true"        android:layout_toRightOf="@+id/classify_head"        android:layout_toEndOf="@+id/classify_head"        android:layout_marginLeft="12dp"        android:layout_marginStart="12dp" />    <ImageView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:src="@mipmap/icon_xiangxia"        android:layout_centerVertical="true"        android:layout_alignParentRight="true"        android:layout_alignParentEnd="true"        android:layout_marginRight="11dp"        android:layout_marginEnd="11dp"        android:id="@+id/imageView2" />    <ImageView        android:id="@+id/classify_head"        android:layout_width="35dp"        android:layout_height="35dp"        android:src="@mipmap/ic_launcher"        android:layout_alignParentTop="true"        android:layout_alignParentLeft="true"        android:layout_alignParentStart="true" /></RelativeLayout>

 

 

/** * 首页分类model * zhangy * Created by Administrator on 2017/5/15. */public class Classify {    public String name; //用户名    public int headId;  //用用户头像资源    public Classify(String name, int headId)    {        super();        this.name = name;        this.headId = headId;    }    public static class ClassifyBaby1 {        public String id;        public String name;        public String icon;        public List<ClassifyBaby2> good_class_two;    }    public static class ClassifyBaby2 {        public String id;        public String name;        public String icon;    }}