二级列表购物车
要实现此功能首先需要导入一个compile 'org.greenrobot:eventbus:3.1.1'依赖没有提供数据自己写数据
MyAdapter类
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseExpandableListAdapter;
import android.widget.CheckBox;
import android.widget.ImageView;
import android.widget.TextView;
import org.greenrobot.eventbus.EventBus;
import java.util.List;
import mvpframework.bwie.com.a1509agoodcart.R;
import mvpframework.bwie.com.a1509agoodcart.bean.GoosBean;
import mvpframework.bwie.com.a1509agoodcart.eventbusevent.MessageEvent;
import mvpframework.bwie.com.a1509agoodcart.eventbusevent.PriceAndCountEvent;
/**
*
*/
public class MyAdapter extends BaseExpandableListAdapter {
private Context context;
private List groupList;
private List> childList;
private final LayoutInflater inflater;
public MyAdapter(Context context, List groupList, List> childList) {
this.context = context;
this.groupList = groupList;
this.childList = childList;
inflater = LayoutInflater.from(context);
}
@Override
public int getGroupCount() {
return groupList.size();
}
@Override
public int getChildrenCount(int groupPosition) {
return childList.get(groupPosition).size();
}
@Override
public Object getGroup(int groupPosition) {
return groupList.get(groupPosition);
}
@Override
public Object getChild(int groupPosition, int childPosition) {
return childList.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(final int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) {
View view;
final GroupViewHolder holder;
if (convertView == null) {
holder = new GroupViewHolder();
view = inflater.inflate(R.layout.item_parent_market, null);
holder.cbGroup = view.findViewById(R.id.cb_parent);
holder.tv_number = view.findViewById(R.id.tv_number);
view.setTag(holder);
} else {
view = convertView;
holder = (GroupViewHolder) view.getTag();
}
final GoosBean.DataBean dataBean = groupList.get(groupPosition);
holder.cbGroup.setChecked(dataBean.isChecked());
holder.tv_number.setText(dataBean.getTitle());
//一级checkbox
holder.cbGroup.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
dataBean.setChecked(holder.cbGroup.isChecked());
changeChildCbState(groupPosition, holder.cbGroup.isChecked());
EventBus.getDefault().post(compute());
changeAllCbState(isAllGroupCbSelected());
notifyDataSetChanged();
}
});
return view;
}
@Override
public View getChildView(final int groupPosition, final int childPosition, boolean isLastChild, View convertView, ViewGroup parent) {
View view;
final ChildViewHolder holder;
if (convertView == null) {
holder = new ChildViewHolder();
view = inflater.inflate(R.layout.item_child_market, null);
holder.cbChild = view.findViewById(R.id.cb_child);
holder.tv_tel = view.findViewById(R.id.tv_tel);
holder.tv_content = view.findViewById(R.id.tv_content);
holder.tv_time = view.findViewById(R.id.tv_time);
holder.tv_price = view.findViewById(R.id.tv_pri);
holder.tv_del = view.findViewById(R.id.tv_del);
holder.iv_add = view.findViewById(R.id.iv_add);
holder.iv_del = view.findViewById(R.id.iv_del);
holder.tv_num = view.findViewById(R.id.tv_num);
view.setTag(holder);
} else {
view = convertView;
holder = (ChildViewHolder) view.getTag();
}
final GoosBean.DataBean.DatasBean datasBean = childList.get(groupPosition).get(childPosition);
holder.cbChild.setChecked(datasBean.isChecked());
holder.tv_tel.setText(datasBean.getType_name());
holder.tv_content.setText(datasBean.getMsg());
holder.tv_time.setText(datasBean.getAdd_time());
holder.tv_price.setText(datasBean.getPrice() + "");
holder.tv_num.setText(datasBean.getNum() + "");
//二级checkbox
holder.cbChild.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//设置该条目对象里的checked属性值
datasBean.setChecked(holder.cbChild.isChecked());
PriceAndCountEvent priceAndCountEvent = compute();
EventBus.getDefault().post(priceAndCountEvent);
if (holder.cbChild.isChecked()) {
//当前checkbox是选中状态
if (isAllChildCbSelected(groupPosition)) {
changGroupCbState(groupPosition, true);
changeAllCbState(isAllGroupCbSelected());
}
} else {
changGroupCbState(groupPosition, false);
changeAllCbState(isAllGroupCbSelected());
}
notifyDataSetChanged();
}
});
//加号
holder.iv_add.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
int num = datasBean.getNum();
holder.tv_num.setText(++num + "");
datasBean.setNum(num);
if (holder.cbChild.isChecked()) {
PriceAndCountEvent priceAndCountEvent = compute();
EventBus.getDefault().post(priceAndCountEvent);
}
}
});
//减号
holder.iv_del.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
int num = datasBean.getNum();
if (num == 1) {
return;
}
holder.tv_num.setText(--num + "");
datasBean.setNum(num);
if (holder.cbChild.isChecked()) {
PriceAndCountEvent priceAndCountEvent = compute();
EventBus.getDefault().post(priceAndCountEvent);
}
}
});
//删除
holder.tv_del.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
List datasBeen = childList.get(groupPosition);
GoosBean.DataBean.DatasBean remove = datasBeen.remove(childPosition);
if (datasBeen.size() == 0) {
childList.remove(groupPosition);
groupList.remove(groupPosition);
}
EventBus.getDefault().post(compute());
notifyDataSetChanged();
}
});
return view;
}
@Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
return true;
}
class GroupViewHolder {
CheckBox cbGroup;
TextView tv_number;
}
class ChildViewHolder {
CheckBox cbChild;
TextView tv_tel;
TextView tv_content;
TextView tv_time;
TextView tv_price;
TextView tv_del;
ImageView iv_del;
ImageView iv_add;
TextView tv_num;
}
/**
* 改变全选的状态
*
* @param flag
*/
private void changeAllCbState(boolean flag) {
MessageEvent messageEvent = new MessageEvent();
messageEvent.setChecked(flag);
EventBus.getDefault().post(messageEvent);
}
/**
* 改变一级列表checkbox状态
*
* @param groupPosition
*/
private void changGroupCbState(int groupPosition, boolean flag) {
GoosBean.DataBean dataBean = groupList.get(groupPosition);
dataBean.setChecked(flag);
}
/**
* 改变二级列表checkbox状态
*
* @param groupPosition
* @param flag
*/
private void changeChildCbState(int groupPosition, boolean flag) {
List datasBeen = childList.get(groupPosition);
for (int i = 0; i < datasBeen.size(); i++) {
GoosBean.DataBean.DatasBean datasBean = datasBeen.get(i);
datasBean.setChecked(flag);
}
}
/**
* 判断一级列表是否全部选中
*
* @return
*/
private boolean isAllGroupCbSelected() {
for (int i = 0; i < groupList.size(); i++) {
GoosBean.DataBean dataBean = groupList.get(i);
if (!dataBean.isChecked()) {
return false;
}
}
return true;
}
/**
* 判断二级列表是否全部选中
*
* @param groupPosition
* @return
*/
private boolean isAllChildCbSelected(int groupPosition) {
List datasBeen = childList.get(groupPosition);
for (int i = 0; i < datasBeen.size(); i++) {
GoosBean.DataBean.DatasBean datasBean = datasBeen.get(i);
if (!datasBean.isChecked()) {
return false;
}
}
return true;
}
/**
* 计算列表中，选中的钱和数量
*/
private PriceAndCountEvent compute() {
int count = 0;
int price = 0;
for (int i = 0; i < childList.size(); i++) {
List datasBeen = childList.get(i);
for (int j = 0; j < datasBeen.size(); j++) {
GoosBean.DataBean.DatasBean datasBean = datasBeen.get(j);
if (datasBean.isChecked()) {
price += datasBean.getNum() * datasBean.getPrice();
count += datasBean.getNum();
}
}
}
PriceAndCountEvent priceAndCountEvent = new PriceAndCountEvent();
priceAndCountEvent.setCount(count);
priceAndCountEvent.setPrice(price);
return priceAndCountEvent;
}
/**
* 设置全选、反选
*
* @param flag
*/
public void changeAllListCbState(boolean flag) {
for (int i = 0; i < groupList.size(); i++) {
changGroupCbState(i, flag);
changeChildCbState(i, flag);
}
EventBus.getDefault().post(compute());
notifyDataSetChanged();
}
}
Activity类
package mvpframework.bwie.com.a1509agoodcart.view;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.CheckBox;
import android.widget.ExpandableListView;
import android.widget.TextView;
import org.greenrobot.eventbus.EventBus;
import org.greenrobot.eventbus.Subscribe;
import java.util.List;
import mvpframework.bwie.com.a1509agoodcart.R;
import mvpframework.bwie.com.a1509agoodcart.adapter.MyAdapter;
import mvpframework.bwie.com.a1509agoodcart.bean.GoosBean;
import mvpframework.bwie.com.a1509agoodcart.eventbusevent.MessageEvent;
import mvpframework.bwie.com.a1509agoodcart.eventbusevent.PriceAndCountEvent;
import mvpframework.bwie.com.a1509agoodcart.presenter.MainPresenter;
public class MainActivity extends AppCompatActivity implements IMainActivity {
private ExpandableListView mElv;
private CheckBox mCheckbox2;
/**
* 0
*/
private TextView mTvPrice;
/**
* 结算(0)
*/
private TextView mTvNum;
private MyAdapter adapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
EventBus.getDefault().register(this);
initView();
new MainPresenter(this).getGoods();
mCheckbox2.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
adapter.changeAllListCbState(mCheckbox2.isChecked());
}
});
}
@Override
protected void onDestroy() {
super.onDestroy();
EventBus.getDefault().unregister(this);
}
private void initView() {
mElv = (ExpandableListView) findViewById(R.id.elv);
mCheckbox2 = (CheckBox) findViewById(R.id.checkbox2);
mTvPrice = (TextView) findViewById(R.id.tv_price);
mTvNum = (TextView) findViewById(R.id.tv_num);
}
@Override
public void showList(List groupList, List> childList) {
adapter = new MyAdapter(this, groupList, childList);
mElv.setAdapter(adapter);
mElv.setGroupIndicator(null);
//默认让其全部展开
for (int i = 0; i < groupList.size(); i++) {
mElv.expandGroup(i);
}
}
@Subscribe
public void onMessageEvent(MessageEvent event) {
mCheckbox2.setChecked(event.isChecked());
}
@Subscribe
public void onMessageEvent(PriceAndCountEvent event) {
mTvNum.setText("结算(" + event.getCount() + ")");
mTvPrice.setText(event.getPrice() + "");
}
}
MainActivity布局
一级列表布局
二级列表布局
Drowable样式
