大体的布局
(二级列表)
1 <?xml version="1.0" encoding="utf-8"?> 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 3 xmlns:app="http://schemas.android.com/apk/res-auto" 4 xmlns:tools="http://schemas.android.com/tools" 5 android:layout_width="match_parent" 6 android:layout_height="match_parent" 7 android:orientation="vertical" 8 tools:context="mvpframework.bwie.com.a1509agoodcart.view.MainActivity"> 9 10 <TextView 11 android:layout_width="match_parent" 12 android:layout_height="40dp" 13 android:background="#990000ff" 14 android:gravity="center" 15 android:text="购物车" 16 android:textColor="#ff3660" 17 android:textSize="25sp" /> 18 19 <ExpandableListView 20 android:id="@+id/elv" 21 android:layout_width="match_parent" 22 android:layout_height="match_parent" 23 android:layout_weight="1" /> 24 25 <RelativeLayout 26 android:layout_width="match_parent" 27 android:layout_height="50dp" 28 android:layout_alignParentBottom="true" 29 android:background="@android:color/white" 30 android:gravity="center_vertical"> 31 32 <CheckBox 33 android:id="@+id/checkbox2" 34 android:layout_width="wrap_content" 35 android:layout_height="wrap_content" 36 android:layout_centerVertical="true" 37 android:layout_marginLeft="10dp" 38 android:focusable="false" /> 39 40 <TextView 41 android:layout_width="wrap_content" 42 android:layout_height="50dp" 43 android:layout_centerVertical="true" 44 android:layout_marginLeft="10dp" 45 android:layout_toRightOf="@+id/checkbox2" 46 android:gravity="center_vertical" 47 android:text="全选" 48 android:textSize="20sp" /> 49 50 <LinearLayout 51 android:layout_width="wrap_content" 52 android:layout_height="wrap_content" 53 android:layout_alignParentRight="true" 54 android:orientation="horizontal"> 55 56 <TextView 57 android:layout_width="wrap_content" 58 android:layout_height="wrap_content" 59 android:layout_marginLeft="10dp" 60 android:text="合计 :" /> 61 62 63 <TextView 64 android:id="@+id/tv_price" 65 android:layout_width="wrap_content" 66 android:layout_height="50dp" 67 android:layout_marginLeft="10dp" 68 android:paddingRight="10dp" 69 android:text="0" 70 android:textColor="@android:color/holo_red_light" /> 71 72 73 <TextView 74 android:id="@+id/tv_num" 75 android:layout_width="wrap_content" 76 android:layout_height="50dp" 77 android:background="@android:color/holo_red_dark" 78 android:gravity="center" 79 android:padding="10dp" 80 android:text="结算(0)" 81 android:textColor="@android:color/white" /> 82 </LinearLayout> 83 </RelativeLayout> 84 85 86 </LinearLayout>
<?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:gravity="center_vertical" android:orientation="horizontal"> <CheckBox android:id="@+id/cb_parent" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginBottom="30dp" android:layout_marginLeft="20dp" android:layout_marginTop="30dp" android:focusable="false" /> <TextView android:id="@+id/tv_sign" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="20dp" android:text="标记" /> <TextView android:id="@+id/tv_number" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="20dp" android:text="12345678" /> </LinearLayout>
<?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:background="@android:color/darker_gray" android:gravity="center_vertical" 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="40dp" android:layout_marginTop="30dp" android:focusable="false" /> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="vertical"> <TextView android:id="@+id/tv_tel" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="20dp" android:text="iphone6" /> <TextView android:id="@+id/tv_content" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="20dp" android:text="什么手机" /> <TextView android:id="@+id/tv_time" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="20dp" android:text="2016-12-10" /> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_weight="1" android:orientation="vertical"> <TextView android:id="@+id/tv_pri" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="¥3000.00" /> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:gravity="center_vertical"> <ImageView android:id="@+id/iv_del" android:layout_width="20dp" android:layout_height="20dp" android:src="@drawable/shopcart_minus_grey" /> <TextView android:id="@+id/tv_num" 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> <TextView android:id="@+id/tv_del" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="删除" /> </LinearLayout>
接下来是适配器类
public class MyAdapter extends BaseExpandableListAdapter { private Context context; private List<GoosBean.DataBean> groupList; private List<List<GoosBean.DataBean.DatasBean>> childList; private final LayoutInflater inflater; public MyAdapter(Context context, List<GoosBean.DataBean> groupList, List<List<GoosBean.DataBean.DatasBean>> 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<GoosBean.DataBean.DatasBean> 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<GoosBean.DataBean.DatasBean> 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<GoosBean.DataBean.DatasBean> 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<GoosBean.DataBean.DatasBean> 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(); } }
Bean类
public class GoosBean { /** * code : 200 * data : [{"datas":[{"add_time":"2016-12-10 14:54:58","cart_id":"445162","house_id":"1","msg":"购买渠道:大陆国行","price":500,"type_name":"苹果 iPhone 6(白金色)","type_sn_id":"ggh"},{"add_time":"2016-12-10 14:55:18","cart_id":"445163","house_id":"1","msg":"购买渠道:水货无锁","price":1000,"type_name":"苹果 iPhone 7 (亮黑色)","type_sn_id":"tgg"}],"title":"苹果","title_id":"59280"},{"datas":[{"add_time":"2016-12-10 14:54:58","cart_id":"445162","house_id":"1","msg":"边框背板:全新未使用","price":50,"type_name":"小米4s (白金色)","type_sn_id":"ggh"},{"add_time":"2016-12-10 14:55:18","cart_id":"445163","house_id":"1","msg":"屏幕性能:色差/亮点/轻微发黄","price":100,"type_name":"小米5s (亮黑色)","type_sn_id":"tgg"}],"title":"小米","title_id":"59279"},{"datas":[{"add_time":"2016-12-10 14:54:58","cart_id":"445162","house_id":"1","msg":"边框背板:全新未使用","price":50,"type_name":"三星 (白金色)","type_sn_id":"ggh"},{"add_time":"2016-12-10 14:55:18","cart_id":"445163","house_id":"1","msg":"屏幕性能:色差/亮点/轻微发黄","price":100,"type_name":"三星 (亮黑色)","type_sn_id":"tgg"}],"title":"三星","title_id":"59279"},{"datas":[{"add_time":"2016-12-10 14:54:58","cart_id":"445162","house_id":"1","msg":"边框背板:全新未使用","price":50,"type_name":"华为 (白金色)","type_sn_id":"ggh"},{"add_time":"2016-12-10 14:55:18","cart_id":"445163","house_id":"1","msg":"屏幕性能:色差/亮点/轻微发黄","price":100,"type_name":"华为 (亮黑色)","type_sn_id":"tgg"},{"add_time":"2016-12-10 4:55:28","cart_id":"445164","house_id":"1","msg":"屏幕性能:色差/亮点/轻微发黄","price":150,"type_name":"华为 (纯黑色)","type_sn_id":"hgg"}],"title":"华为","title_id":"59279"}] * flag : Success * msg : 描述 */ private String code; private String flag; private String msg; private List<DataBean> data; public String getCode() { return code; } public void setCode(String code) { this.code = code; } public String getFlag() { return flag; } public void setFlag(String flag) { this.flag = flag; } public String getMsg() { return msg; } public void setMsg(String msg) { this.msg = msg; } public List<DataBean> getData() { return data; } public void setData(List<DataBean> data) { this.data = data; } public static class DataBean { /** * datas : [{"add_time":"2016-12-10 14:54:58","cart_id":"445162","house_id":"1","msg":"购买渠道:大陆国行","price":500,"type_name":"苹果 iPhone 6(白金色)","type_sn_id":"ggh"},{"add_time":"2016-12-10 14:55:18","cart_id":"445163","house_id":"1","msg":"购买渠道:水货无锁","price":1000,"type_name":"苹果 iPhone 7 (亮黑色)","type_sn_id":"tgg"}] * title : 苹果 * title_id : 59280 */ private boolean checked; private String title; private String title_id; private List<DatasBean> datas; public boolean isChecked() { return checked; } public void setChecked(boolean checked) { this.checked = checked; } public String getTitle() { return title; } public void setTitle(String title) { this.title = title; } public String getTitle_id() { return title_id; } public void setTitle_id(String title_id) { this.title_id = title_id; } public List<DatasBean> getDatas() { return datas; } public void setDatas(List<DatasBean> datas) { this.datas = datas; } public static class DatasBean { /** * add_time : 2016-12-10 14:54:58 * cart_id : 445162 * house_id : 1 * msg : 购买渠道:大陆国行 * price : 500 * type_name : 苹果 iPhone 6(白金色) * type_sn_id : ggh */ private boolean checked; private int num = 1; private String add_time; private String cart_id; private String house_id; private String msg; private int price; private String type_name; private String type_sn_id; public int getNum() { return num; } public void setNum(int num) { this.num = num; } public boolean isChecked() { return checked; } public void setChecked(boolean checked) { this.checked = checked; } public String getAdd_time() { return add_time; } public void setAdd_time(String add_time) { this.add_time = add_time; } public String getCart_id() { return cart_id; } public void setCart_id(String cart_id) { this.cart_id = cart_id; } public String getHouse_id() { return house_id; } public void setHouse_id(String house_id) { this.house_id = house_id; } public String getMsg() { return msg; } public void setMsg(String msg) { this.msg = msg; } public int getPrice() { return price; } public void setPrice(int price) { this.price = price; } public String getType_name() { return type_name; } public void setType_name(String type_name) { this.type_name = type_name; } public String getType_sn_id() { return type_sn_id; } public void setType_sn_id(String type_sn_id) { this.type_sn_id = type_sn_id; } } } }
Model层
public interface IMainModel {
public void getGoods(OnNetListener<GoosBean> onNetListener);
}
调用接口请求数据
public class MainModel implements IMainModel {
private Handler handler = new Handler(Looper.getMainLooper());
public void getGoods(final OnNetListener<GoosBean> onNetListener) {
HttpUtils.getHttpUtils().doGet(Api.url, new Callback() {
@Override
public void onFailure(Call call, IOException e) {
}
@Override
public void onResponse(Call call, Response response) throws IOException {
String string = response.body().string();
final GoosBean goosBean = new Gson().fromJson(string, GoosBean.class);
handler.post(new Runnable() {
@Override
public void run() {
onNetListener.onSuccess(goosBean);
}
});
}
});
}
}
net层
网络请求
public class HttpUtils {
private static volatile HttpUtils httpUtils;
private final OkHttpClient client;
private HttpUtils() {
HttpLoggingInterceptor logging = new HttpLoggingInterceptor();
logging.setLevel(HttpLoggingInterceptor.Level.BODY);
client = new OkHttpClient.Builder()
.addInterceptor(logging)
.build();
}
public static HttpUtils getHttpUtils() {
if (httpUtils == null) {
synchronized (HttpUtils.class) {
if (httpUtils == null) {
httpUtils = new HttpUtils();
}
}
}
return httpUtils;
}
/**
* GET请求
*
* @param url
* @param callback
*/
public void doGet(String url, Callback callback) {
Request request = new Request.Builder().url(url).build();
client.newCall(request).enqueue(callback);
}
}
返回成功或失败
public interface OnNetListener<T> {
public void onSuccess(T t);
public void onFailure(Exception e);
}
Api类 需要的url
Presenter层
里面是关于model层的逻辑
public class MainPresenter {
private final IMainModel imainModel;
private final IMainActivity iMainActivity;
public MainPresenter(IMainActivity iMainActivity) {
this.iMainActivity = iMainActivity;
imainModel = new MainModel();
}
public void getGoods() {
imainModel.getGoods(new OnNetListener<GoosBean>() {
@Override
public void onSuccess(GoosBean goosBean) {
//List<GoosBean.DataBean> groupList, List<List<GoosBean.DataBean.DatasBean>> childList
List<GoosBean.DataBean> dataBean = goosBean.getData();
List<List<GoosBean.DataBean.DatasBean>> childList = new ArrayList<List<GoosBean.DataBean.DatasBean>>();
for (int i = 0; i < dataBean.size(); i++) {
List<GoosBean.DataBean.DatasBean> datas = dataBean.get(i).getDatas();
childList.add(datas);
}
iMainActivity.showList(dataBean, childList);
}
@Override
public void onFailure(Exception e) {
}
});
}
}
View层
定义一个接口
public interface IMainActivity {
public void showList(List<GoosBean.DataBean> groupList, List<List<GoosBean.DataBean.DatasBean>> childList);
}
Mainactivity类
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<GoosBean.DataBean> groupList, List<List<GoosBean.DataBean.DatasBean>> 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() + "");
}
}
<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>