android - 购物车页面【仿】京东App
16lz
2022-01-27
drawable【这是两张图片】
xml
- activity_second
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical"> <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="40dp"> <CheckBox android:id="@+id/cb" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerVertical="true" android:text="全选" /> <TextView android:id="@+id/tvTotal" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerVertical="true" android:layout_marginLeft="15dp" android:layout_toRightOf="@id/cb" android:text="合计:" /> <TextView android:id="@+id/tvCount" android:layout_width="100dp" android:layout_height="match_parent" android:layout_alignParentRight="true" android:layout_centerVertical="true" android:background="#ff0000" android:gravity="center" android:text="去结算(0)" android:textColor="#ffffff" /> RelativeLayout>LinearLayout>- elv_child
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="120dp" android:descendantFocusability="blocksDescendants" android:gravity="center_vertical" android:orientation="horizontal" android:paddingLeft="50dp"> <CheckBox android:id="@+id/cbChild" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <ImageView android:id="@+id/iv" android:layout_width="100dp" android:layout_height="100dp" /> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_weight="1" android:orientation="vertical"> <TextView android:id="@+id/tvTitle" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <TextView android:id="@+id/tvSubhead" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:gravity="center_vertical" android:orientation="horizontal"> <TextView android:id="@+id/tvPrice" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <ImageView android:layout_marginLeft="10dp" android:id="@+id/ivDel" android:layout_width="25dp" android:layout_height="25dp" android:background="@drawable/iv_del" /> <TextView android:id="@+id/tvNum" android:layout_width="wrap_content" android:layout_height="wrap_content" android:textSize="25sp" android:layout_marginLeft="3dp" android:layout_marginRight="3dp" android:text="1"/> <ImageView android:id="@+id/ivAdd" android:layout_width="25dp" android:layout_height="25dp" android:background="@drawable/iv_add" /> LinearLayout> LinearLayout> <Button android:id="@+id/btDel" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="删除" />LinearLayout>- elv_group
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="wrap_content" android:gravity="center_vertical" android:orientation="horizontal"> <CheckBox android:id="@+id/cbGroup" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <TextView android:id="@+id/tvGroup" android:layout_width="match_parent" android:layout_height="40dp" android:gravity="center_vertical" />LinearLayout>veiw层
- ISecondListener
public interface ISecondListener { void show(List group, List> child);} - SecondActivity
public class SecondActivity extends AppCompatActivity implements ISecondListener { private GetCartPresenter getCartPresenter; private ExpandableListView mElv; private CheckBox mCb; private TextView mTvTotal; private TextView mTvCount; private ElvAdapter elvAdapter; private PriceAndCount priceAndCount; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_second); initView(); getCartPresenter = new GetCartPresenter(this); getCartPresenter.getCart(); mCb.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { elvAdapter.AllOrNone(mCb.isChecked()); } }); } @Override protected void onDestroy() { super.onDestroy(); getCartPresenter.dettach(); } @Override public void show(List group, List> child) { elvAdapter = new ElvAdapter(this, group, child); mElv.setGroupIndicator(null); mElv.setAdapter(elvAdapter); for (int i = 0; i < group.size(); i++) { mElv.expandGroup(i); } } private void initView() { mElv = (ExpandableListView) findViewById(R.id.elv); mCb = (CheckBox) findViewById(R.id.cb); mTvTotal = (TextView) findViewById(R.id.tvTotal); mTvCount = (TextView) findViewById(R.id.tvCount); mTvCount.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { //跳转到确认订单页面 Intent intent = new Intent(SecondActivity.this, ConfirmActivity.class); if (priceAndCount != null) { intent.putExtra("money", priceAndCount.getPrice() + ""); } startActivity(intent); } }); } public void setPriceAndCount(PriceAndCount priceAndCount) { this.priceAndCount = priceAndCount; mTvTotal.setText("合计：" + priceAndCount.getPrice()); mTvCount.setText("去结算(" + priceAndCount.getCount() + ")"); } public void setAllChecked(boolean bool) { mCb.setChecked(bool); } presenter
- GetCartPresenter
public class GetCartPresenter { private ISecondListener iSecondListener; private final GetCartService getCartService; public GetCartPresenter(ISecondListener iSecondListener) { this.iSecondListener = iSecondListener; getCartService = new GetCartModel(); } public void dettach() { iSecondListener = null; } public void getCart() { Map params = new HashMap<>(); params.put("uid", "100"); params.put("pid", "71"); getCartService.getCart(params, new OnNetListener() { @Override public void onSuccess(GetCartBean getCartBean) { if (iSecondListener != null) { List group = getCartBean.getData(); List> child = new ArrayList<>(); for (int i = 0; i < group.size(); i++) { child.add(group.get(i).getList()); } iSecondListener.show(group, child); } } @Override public void onFailure(Exception e) { } }); }} model
- GetCartService
public interface GetCartService { void getCart(Map params, OnNetListener onNetListener);} - GetCartModel
public class GetCartModel implements GetCartService { private Handler handler = new Handler(Looper.getMainLooper()); @Override public void getCart(Map params, final OnNetListener onNetListener) { OkHttpUtils.getOkHttpUtils().doPost(Api.str2, params, 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 GetCartBean getCartBean = new Gson().fromJson(string, GetCartBean.class); handler.post(new Runnable() { @Override public void run() { onNetListener.onSuccess(getCartBean); } }); } }); }} adapter
- ElvAdapter
public class ElvAdapter extends BaseExpandableListAdapter { private Context context; private List group; private List> child; private final LayoutInflater inflater; public ElvAdapter(Context context, List group, List> 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(final int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) { View view; final GroupViewHolder holder; if (convertView == null) { view = inflater.inflate(R.layout.elv_group, null); holder = new GroupViewHolder(); holder.tv = view.findViewById(R.id.tvGroup); holder.cbGroup = view.findViewById(R.id.cbGroup); view.setTag(holder); } else { view = convertView; holder = (GroupViewHolder) view.getTag(); } final GetCartBean.DataBean dataBean = group.get(groupPosition); holder.tv.setText(dataBean.getSellerName()); holder.cbGroup.setChecked(dataBean.isChecked()); holder.cbGroup.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { //需要改变三个checkbox的状态值 //1.一级列表的checkbox状态值 dataBean.setChecked(holder.cbGroup.isChecked()); //2.二级列表的checkbox状态值 setChildrenCb(groupPosition, holder.cbGroup.isChecked()); //3.全选的checkbox状态值 ((SecondActivity) context).setAllChecked(isAllGroupCbChecked()); //计算钱和数量并显示 setPriceAndCount(); //刷新界面 notifyDataSetChanged(); } }); return view; } @Override public View getChildView(final int groupPosition, final int childPosition, boolean isLastChild, final View convertView, ViewGroup parent) { View view; final ChildViewHolder holder; if (convertView == null) { view = inflater.inflate(R.layout.elv_child, null); holder = new ChildViewHolder(); holder.iv = view.findViewById(R.id.iv); holder.tvTitle = view.findViewById(R.id.tvTitle); holder.tvSubhead = view.findViewById(R.id.tvSubhead); holder.tvPrice = view.findViewById(R.id.tvPrice); holder.cbChild = view.findViewById(R.id.cbChild); holder.btDel = view.findViewById(R.id.btDel); holder.tvNum = view.findViewById(R.id.tvNum); holder.ivDel = view.findViewById(R.id.ivDel); holder.ivAdd = view.findViewById(R.id.ivAdd); view.setTag(holder); } else { view = convertView; holder = (ChildViewHolder) view.getTag(); } final GetCartBean.DataBean.ListBean listBean = child.get(groupPosition).get(childPosition); String images = listBean.getImages(); Glide.with(context).load(images.split("\\|")[0]).into(holder.iv); holder.tvTitle.setText(listBean.getTitle()); holder.cbChild.setChecked(child.get(groupPosition).get(childPosition).isChecked()); holder.tvSubhead.setText(listBean.getSubhead()); holder.tvPrice.setText(listBean.getPrice() + "元"); holder.tvNum.setText(listBean.getCount() + ""); //给checkbox设置点击事件 holder.cbChild.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { //需要改变三个checkbox的状态值 //1.二级列表的checkbox状态值 listBean.setChecked(holder.cbChild.isChecked()); //2.一级列表的checkbox状态值 group.get(groupPosition).setChecked(isAllChildCbChecked(groupPosition)); //3.全选的checkbox状态值 ((SecondActivity) context).setAllChecked(isAllGroupCbChecked()); //计算钱和数量并显示 setPriceAndCount(); //刷新界面 notifyDataSetChanged(); } }); holder.ivAdd.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { //获取目前显示的值 int count = listBean.getCount(); count++; //改变JavaBean里的状态值 listBean.setCount(count); //计算钱和数量并显示 setPriceAndCount(); //刷新列表 notifyDataSetChanged(); } }); holder.ivDel.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { //获取目前显示的值 int count = listBean.getCount(); if (count <= 1) { count = 1; } else { count--; } //改变JavaBean里的状态值 listBean.setCount(count); //计算钱和数量并显示 setPriceAndCount(); //刷新列表 notifyDataSetChanged(); } }); holder.btDel.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { //其实就是删除集合 List listBeans = child.get(groupPosition); if (listBeans.size() > 0) { listBeans.remove(childPosition); } if (listBeans.size() == 0) { child.remove(groupPosition); group.remove(groupPosition); } //计算钱和数量并显示 setPriceAndCount(); //改变全选状态 ((SecondActivity) context).setAllChecked(isAllGroupCbChecked()); //刷新列表 notifyDataSetChanged(); } }); return view; } @Override public boolean isChildSelectable(int groupPosition, int childPosition) { return false; } class GroupViewHolder { TextView tv; CheckBox cbGroup; } class ChildViewHolder { ImageView iv; TextView tvTitle; TextView tvSubhead; TextView tvPrice; CheckBox cbChild; Button btDel; TextView tvNum; ImageView ivDel; ImageView ivAdd; } /** * 设置一级列表对应的二级列表checkbox状态 */ private void setChildrenCb(int groupPosition, boolean bool) { List listBeans = child.get(groupPosition); for (int i = 0; i < listBeans.size(); i++) { listBeans.get(i).setChecked(bool); } } /** * 判断一级列表checkbox状态 */ private boolean isAllGroupCbChecked() { if (group.size() == 0) { return false; } for (int i = 0; i < group.size(); i++) { if (!group.get(i).isChecked()) { return false; } } return true; } /** * 判断二级列表checkbox状态 */ private boolean isAllChildCbChecked(int groupPosition) { List listBeans = child.get(groupPosition); for (int i = 0; i < listBeans.size(); i++) { if (!listBeans.get(i).isChecked()) { return false; } } return true; } /** * 设置钱和数量 */ private void setPriceAndCount() { ((SecondActivity) context).setPriceAndCount(compute()); } /** * 计算钱和数量 */ private PriceAndCount compute() { double price = 0; int count = 0; for (int i = 0; i < group.size(); i++) { List listBeans = child.get(i); for (int j = 0; j < listBeans.size(); j++) { if (listBeans.get(j).isChecked()) { price += listBeans.get(j).getPrice() * listBeans.get(j).getCount(); count += listBeans.get(j).getCount(); } } } return new PriceAndCount(price, count); } /** * 全选或者全不选 */ public void AllOrNone(boolean bool) { for (int i = 0; i < group.size(); i++) { group.get(i).setChecked(bool); setChildrenCb(i, bool); } setPriceAndCount(); notifyDataSetChanged(); }} bean包
- GetCartBean
public class GetCartBean { private String msg; private String code; private List data; public String getMsg() { return msg; } public void setMsg(String msg) { this.msg = msg; } public String getCode() { return code; } public void setCode(String code) { this.code = code; } public List getData() { return data; } public void setData(List data) { this.data = data; } public static class DataBean { private boolean checked; private String sellerName; private String sellerid; private List list; public boolean isChecked() { return checked; } public void setChecked(boolean checked) { this.checked = checked; } public String getSellerName() { return sellerName; } public void setSellerName(String sellerName) { this.sellerName = sellerName; } public String getSellerid() { return sellerid; } public void setSellerid(String sellerid) { this.sellerid = sellerid; } public List getList() { return list; } public void setList(List list) { this.list = list; } public static class ListBean { private boolean checked; private int count = 1; private double bargainPrice; private String createtime; private String detailUrl; private String images; private int num; private int pid; private double price; private int pscid; private int selected; private int sellerid; private String subhead; private String title; public boolean isChecked() { return checked; } public void setChecked(boolean checked) { this.checked = checked; } public int getCount() { return count; } public void setCount(int count) { this.count = count; } public double getBargainPrice() { return bargainPrice; } public void setBargainPrice(double bargainPrice) { this.bargainPrice = bargainPrice; } public String getCreatetime() { return createtime; } public void setCreatetime(String createtime) { this.createtime = createtime; } public String getDetailUrl() { return detailUrl; } public void setDetailUrl(String detailUrl) { this.detailUrl = detailUrl; } public String getImages() { return images; } public void setImages(String images) { this.images = images; } public int getNum() { return num; } public void setNum(int num) { this.num = num; } public int getPid() { return pid; } public void setPid(int pid) { this.pid = pid; } public double getPrice() { return price; } public void setPrice(double price) { this.price = price; } public int getPscid() { return pscid; } public void setPscid(int pscid) { this.pscid = pscid; } public int getSelected() { return selected; } public void setSelected(int selected) { this.selected = selected; } public int getSellerid() { return sellerid; } public void setSellerid(int sellerid) { this.sellerid = sellerid; } public String getSubhead() { return subhead; } public void setSubhead(String subhead) { this.subhead = subhead; } public String getTitle() { return title; } public void setTitle(String title) { this.title = title; } } }} - PriceAndCount
public class PriceAndCount { private double price; private int count; public PriceAndCount(double price, int count) { this.price = price; this.count = count; } public double getPrice() { return price; } public void setPrice(double price) { this.price = price; } public int getCount() { return count; } public void setCount(int count) { this.count = count; }更多相关文章
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