Android二级列表仿购物车布局

//一级列表

<?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="100dp"
android:orientation="horizontal">
<CheckBox
android:id="@+id/cb_group"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="30dp"
android:layout_marginBottom="30dp"
android:layout_marginLeft="20dp"
android:focusable="false"/>
<TextView
android:id="@+id/tv_sign"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="20dp"
android:layout_marginTop="30dp"
android:text="标记"/>
<TextView
android:id="@+id/tv_dian"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="20dp"
android:layout_marginTop="30dp"
android:text="标记"/>
</LinearLayout>

//二级列表

<?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">

<CheckBox
android:id="@+id/cb_child"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="30dp"
android:layout_marginLeft="50dp"
android:layout_marginTop="45dp"
android:focusable="false" />

<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">

<TextViewandroid:id="@+id/tv_title"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="20dp"
android:layout_marginTop="35dp"
android:text="苹果" />

<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="20dp"
android:layout_weight="1"
android:orientation="horizontal">

<ImageView
android:id="@+id/iv"
android:layout_width="100dp"
android:layout_height="100dp" />
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
android:layout_marginLeft="20dp">
<TextViewandroid:id="@+id/tv_pri"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="123" />
<TextViewandroid:id="@+id/tv_infor"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="颜色:黑；尺寸:23L" />
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal">

<ImageView
android:id="@+id/iv_del"
android:layout_width="20dp"
android:layout_height="20dp"
android:src="@drawable/shopcart_minus_grey" />

<TextViewandroid:id="@+id/tv_num"

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android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="5dp"
android:background="@drawable/shopcart_add_btn"
android:paddingBottom="2dp"
android:paddingLeft="20dp"
android:paddingRight="20dp"
android:paddingTop="2dp"
android:text="1" />

<ImageView
android:id="@+id/iv_add"
android:layout_width="20dp"
android:layout_height="20dp"
android:layout_marginLeft="5dp"
android:src="@drawable/shopcart_add_red" />

</LinearLayout>
</LinearLayout>
</LinearLayout>
</LinearLayout>

<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<TextViewandroid:id="@+id/tv_del"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_marginTop="35dp"
android:text="删除" />
</RelativeLayout>

</LinearLayout>

//自定义椭圆-shopcart_add_btn.xml

//在drawable目录下新建xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
<corners android:radius="200dp"></corners>
<stroke android:color="@color/colorPrimaryDark" android:width="1dp"></stroke>
</shape>

//购物车页面

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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:orientation="vertical"
tools:context="com.bwie.exam.view.GoodsActivity">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="50dp"
android:background="#ff3660">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:textSize="20dp"
android:text="购物车"/>
</RelativeLayout>
<ExpandableListView
android:id="@+id/elv"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"/>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="50dp"
android:background="@color/colorPrimary">
<CheckBox
android:id="@+id/checkAll"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="20sp"
android:layout_toRightOf="@id/checkAll"
android:layout_marginTop="10dp"
android:text="全选"/>
<TextView
android:id="@+id/tv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:textSize="20sp"
android:text="合计:"/>
<TextView
android:id="@+id/price"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="￥"
android:layout_toRightOf="@id/tv"
android:textSize="20sp"
android:layout_marginTop="10dp"
android:textColor="#ff3660"/>
<TextView
android:id="@+id/number"
android:layout_width="150dp"
android:layout_height="match_parent"
android:layout_alignParentRight="true"
android:background="#ff3660"
android:textSize="20sp"
android:gravity="center"
android:text="结算(0)"/>
</RelativeLayout>
</LinearLayout>

//展示列表的页面GoodsActivity

public class GoodsActivity extends AppCompatActivity implements IGoodsActivity {

private ExpandableListView mElv;
private CheckBox mCheckAll;
/**
* ￥价钱
*/
private TextView mPrice;
/**
* 结算(0)
*/
private TextView mNumber;
private ElvAdapter adapter;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_goods);
initView();
new GoodsPresenter(this).getGoods();
}

private void initView() {
mElv = (ExpandableListView) findViewById(R.id.elv);
mCheckAll = (CheckBox) findViewById(R.id.checkAll);
mPrice = (TextView) findViewById(R.id.price);
mNumber = (TextView) findViewById(R.id.number);
}

@Override
public void show(List<GoodsBean.DataBean> group, List<List<GoodsBean.DataBean.ListBean>> child) {
adapter = new ElvAdapter(this, group, child);
mElv.setAdapter(adapter);
mElv.setGroupIndicator(null);
//默认二级列表展开
for (int i = 0; i < group.size(); i++) {
mElv.expandGroup(i);
}
}
}

//IGoodsActivity

public interface IGoodsActivity {
public void show(List<GoodsBean.DataBean> group,List<List<GoodsBean.DataBean.ListBean>> child);
}

//GoodsModel

public class GoodsModel extends BaseModel implements IGoodsModel {

@Override
public void getGoods(final OnNetListener<GoodsBean> onNetListener) {
HttpUtil.getHttpUtil().doGet(Api.URL, new Callback() {
@Override
public void onFailure(Call call, final IOException e) {
handler.post(new Runnable() {
@Override
public void run() {
onNetListener.onFailure(e);
}
});
}

@Override
public void onResponse(Call call, Response response) throws IOException {
String string = response.body().string();
final GoodsBean goodsBean = new Gson().fromJson(string, GoodsBean.class);
handler.post(new Runnable() {
@Override
public void run() {
onNetListener.onSuccess(goodsBean);
}
});
}
});
}
}

//BaseModel

public class BaseModel {
public static Handler handler = new Handler(Looper.getMainLooper());
}

//IGoodsModel

public interface IGoodsModel {
public void getGoods(OnNetListener<GoodsBean> onNetListener);
}

//GoodsPresenter

public class GoodsPresenter {
private IGoodsModel iGoodsModel;
private IGoodsActivity iGoodsActivity;

public GoodsPresenter(IGoodsActivity iGoodsActivity) {
this.iGoodsActivity = iGoodsActivity;
iGoodsModel = new GoodsModel();
}
public void getGoods(){
iGoodsModel.getGoods(new OnNetListener<GoodsBean>() {
@Override
public void onSuccess(GoodsBean goodsBean) {
List<GoodsBean.DataBean> data = goodsBean.getData();
List<List<GoodsBean.DataBean.ListBean>> child = new ArrayList<List<GoodsBean.DataBean.ListBean>>();
for (int i = 0; i < data.size(); i++) {
List<GoodsBean.DataBean.ListBean> list = data.get(i).getList();
child.add(list);
}
iGoodsActivity.show(data,child);
}

@Override
public void onFailure(Exception e) {

}
});
}
}

//二级列表适配器

public class ElvAdapter extends BaseExpandableListAdapter {
private Context context;
private List<GoodsBean.DataBean> group;
private List<List<GoodsBean.DataBean.ListBean>> child;
private LayoutInflater inflater;

public ElvAdapter(Context context, List<GoodsBean.DataBean> group, List<List<GoodsBean.DataBean.ListBean>> child) {
this.context = context;
this.group = group;
this.child = child;
inflater = LayoutInflater.from(context);
}

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

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

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

@Override
public Object getChild(int groupPosition, int childPosition) {
return child.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) {
GroupViewHolder holder;
if (convertView == null){
holder = new GroupViewHolder();
convertView = inflater.inflate(R.layout.group,null);
holder.cb_group = (CheckBox) convertView.findViewById(R.id.cb_group);
holder.tv_dian = (TextView) convertView.findViewById(R.id.tv_dian);
convertView.setTag(holder);
} else {
holder = (GroupViewHolder) convertView.getTag();
}
GoodsBean.DataBean dataBean = group.get(groupPosition);
holder.tv_dian.setText(dataBean.getSellerName());
return convertView;
}

@Override
public View getChildView(int groupPosition, int childPosition, boolean isLastChild, View convertView, ViewGroup parent) {
ChildViewHolder holder;
if (convertView == null){
holder = new ChildViewHolder();
convertView = inflater.inflate(R.layout.child,null);
holder.cb_child = (CheckBox) convertView.findViewById(R.id.cb_group);
holder.tv_title = (TextView) convertView.findViewById(R.id.tv_title);
holder.iv = (ImageView) convertView.findViewById(R.id.iv);
holder.tv_pri = (TextView) convertView.findViewById(R.id.tv_pri);
holder.tv_infor = (TextView) convertView.findViewById(R.id.tv_infor);
holder.iv_del = (ImageView) convertView.findViewById(R.id.iv_del);
holder.tv_num = (TextView) convertView.findViewById(R.id.tv_num);
holder.iv_add = (ImageView) convertView.findViewById(R.id.iv_add);
holder.tv_del = (TextView) convertView.findViewById(R.id.tv_del);
convertView.setTag(holder);
} else {
holder = (ChildViewHolder) convertView.getTag();
}
GoodsBean.DataBean.ListBean listBean = child.get(groupPosition).get(childPosition);
holder.tv_title.setText(listBean.getTitle().substring(0,9));
String[] split = listBean.getImages().split("\\|");
ImageLoader.getInstance().displayImage(split[1],holder.iv);
holder.tv_pri.setText(listBean.getPrice()+"");
holder.tv_num.setText(listBean.getNum()+"");
//二级列表的CheckBox
holder.cb_child.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//设置该条目对象里面的CheckBox属性值

}
});
return convertView;
}
//优化列表
//一级
class GroupViewHolder{
CheckBox cb_group;
TextView tv_dian;
}
//二级
class ChildViewHolder{
CheckBox cb_child;
TextView tv_title;
ImageView iv;
TextView tv_pri;
TextView tv_infor;
ImageView iv_del;
TextView tv_num;
ImageView iv_add;
TextView tv_del;
}
@Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
return true;
}
}