Android 中怎么利用Okhttp請求查詢購物車,相信很多沒有經驗的人對此束手無策,為此本文總結了問題出現的原因和解決方法,通過這篇文章希望你能解決這個問題。
查詢購物車的model層
public class SelectCarModel {
private String url="http://120.27.23.105/product/getCarts";
private HashMap<String, String> map = new HashMap<>();
public void verifySelectCarInfo(int uid, final ISelectCarPresenter iSelectCarPresenter){
map.put("uid",uid+"");
OkHttpUtils.getInstance().doPost(url,map, new CallBack() {
@Override
public void onFailed(String msg) {
iSelectCarPresenter.onFailed("請求失敗");
}
@Override
public void onSuccess(String request) {
SelectCarBean selectCarBean = GsonUtils.getInstance().fromJson(request, SelectCarBean.class);
String code = selectCarBean.getCode();
if ("0".equals(code)){
List<SelectCarBean.DataBean> data = selectCarBean.getData();
iSelectCarPresenter.onSuccess(data);
}else{
iSelectCarPresenter.onFailed("請求失敗");
}
}
});
}
}查詢購物車的接口
m層的
public interface ISelectCarPresenter {
void onFailed(String msg);
void onSuccess(List<SelectCarBean.DataBean> data);
}p層的
public interface ISelectCarView {
void onFailed(String msg);
void onSuccess(List<SelectCarBean.DataBean> data);
}查詢購物車的presenter層
public class SelectCarPresenter implements ISelectCarPresenter{
private ISelectCarView iSelectCarView;
private SelectCarModel selectCarModel;
public SelectCarPresenter (ISelectCarView iSelectCarView){
this.iSelectCarView = iSelectCarView;
selectCarModel = new SelectCarModel();
}
//執行集合信息
public void excuteSelectCarData(int uid){
//傳到model
selectCarModel.verifySelectCarInfo(uid,this);
}
@Override
public void onFailed(String msg) {
iSelectCarView.onFailed(msg);
}
@Override
public void onSuccess(List<SelectCarBean.DataBean> data) {
iSelectCarView.onSuccess(data);
}
}查詢購物車的view層
public class ShoppingCartActivity extends AppCompatActivity implements ISelectCarView,View.OnClickListener{
private boolean isLogin;
private SelectCarPresenter selectCarPresenter;
private ExpandableListView car_elv;
private List<Group> glist = new ArrayList<>();
private List<List<Child>> clist = new ArrayList<>();
private CarExpandAdapter carExpandAdapter;
private TextView edit_tv;
private CheckBox chooseAll;
private TextView totalPrice;
private TextView btnAmount;
private boolean isAll;
private double p;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_shoppingcar);
//初始化數據
init();
chooseAll.setOnClickListener(this);
btnAmount.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent intent = new Intent(ShoppingCartActivity.this, IndentActivity.class);
intent.putExtra("price",p+"");
startActivity(intent);
}
});
}
/**
* 查詢購物車
*/
private void selectShoppingCar() {
selectCarPresenter = new SelectCarPresenter(this);
selectCarPresenter.excuteSelectCarData(3381);
carExpandAdapter = new CarExpandAdapter(this,glist,clist,this);
car_elv.setAdapter(carExpandAdapter);
}
/**
* 初始化屬性
*/
private void init() {
car_elv = (ExpandableListView) findViewById(R.id.car_elv);
edit_tv = (TextView) findViewById(R.id.edit_tv);
chooseAll = (CheckBox) findViewById(R.id.chooseAll);
totalPrice = (TextView) findViewById(R.id.totalPrice);
btnAmount = (TextView) findViewById(R.id.btnAmount);
//登錄購物車
selectShoppingCar();
}
@Override
public void onFailed(String msg) {
}
@Override
public void onSuccess(List<SelectCarBean.DataBean> data) {
glist.clear();
clist.clear();
for(int i = 0;i<data.size();i++){
glist.add(new Group(false,data.get(i).getSellerName()));
List<SelectCarBean.DataBean.ListBean> list = data.get(i).getList();
List<Child> cl = new ArrayList<>();
for (int j = 0; j< list.size(); j++){
cl.add(new Child(false, list.get(j).getTitle(),list.get(j).getPrice(), list.get(j).getImages(), list.get(j).getNum(),list.get(j).getSubhead(),list.get(j).getPid()));
}
clist.add(cl);
}
for(int s = 0; s < carExpandAdapter.getGroupCount(); s++){
car_elv.expandGroup(s);
}
carExpandAdapter.notifyDataSetChanged();
}
@Override
public void onResume() {
super.onResume();
init();
}
/**
* 反選
* @param isAll
*/
public void getisAll(Boolean isAll) {
chooseAll.setChecked(isAll);
}
/**
* 全選按鈕
* @param view
*/
@Override
public void onClick(View view) {
isAll = chooseAll.isChecked();
if (!(isAll==true)) {
for (int i = 0; i < glist.size(); i++) {
glist.get(i).setFlag(false);
Log.e("Song","123");
}
for (int i=0 ;i<clist.size();i++){
for (int j=0;j<clist.get(i).size();j++){
clist.get(i).get(j).setFlag(false);
}
}
if (isAll==true){
isAll=false;
}
js();
carExpandAdapter.notifyDataSetChanged();
} else {
for (int i = 0; i < glist.size(); i++) {
glist.get(i).setFlag(true);
}
for (int i=0 ;i<clist.size();i++){
for (int j=0;j<clist.get(i).size();j++){
clist.get(i).get(j).setFlag(true);
}
}
if (isAll==false){
isAll=true;
}
js();
carExpandAdapter.notifyDataSetChanged();
}
}
//結算
public void js(){
p = 0;
int s = 0;//選中商品數量
for(int i=0;i<clist.size();i++){
for(int j=0;j<clist.get(i).size();j++){
if(clist.get(i).get(j).isFlag()){
double price = clist.get(i).get(j).getPrice();
int num = clist.get(i).get(j).getNum();
p += price * num;
s++;
}
}
}
totalPrice.setText("總價:"+ p +"¥");
btnAmount.setText("結算:("+s+")");
}
}view層布局
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="match_parent" android:layout_height="match_parent"> <RelativeLayout android:id="@+id/car_title" android:layout_width="match_parent" android:layout_height="0dp" android:layout_weight="1" android:background="#fff" > <TextView android:layout_width="match_parent" android:layout_height="match_parent" android:gravity="center" android:text="購物車" android:textColor="#000" android:textSize="35dp" /> <TextView android:id="@+id/edit_tv" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_weight="1.5" android:text="編輯" android:textSize="20dp" android:layout_marginRight="30dp" android:layout_centerVertical="true" android:layout_alignParentRight="true" android:layout_alignParentEnd="true" android:layout_marginEnd="30dp" /> </RelativeLayout> <ExpandableListView android:id="@+id/car_elv" android:layout_width="match_parent" android:layout_height="0dp" android:layout_weight="9" android:layout_below="@+id/car_title"></ExpandableListView> <LinearLayout android:layout_width="match_parent" android:layout_height="0dp" android:layout_weight="1" android:orientation="horizontal" android:layout_gravity="bottom" > <CheckBox android:id="@+id/chooseAll" android:layout_width="wrap_content" android:layout_height="wrap_content" android:textSize="25sp" android:padding="10dp" android:text="全選"/> <TextView android:id="@+id/totalPrice" android:layout_width="wrap_content" android:layout_height="wrap_content" android:textSize="25sp" android:layout_weight="1" android:padding="10dp" android:gravity="center" android:text="合計:0.00 ¥"/> <TextView android:id="@+id/btnAmount" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="結算 : (0)" android:gravity="center" android:background="@android:color/holo_orange_light" android:textColor="@android:color/black" android:textSize="25sp" android:padding="10dp"/> </LinearLayout> </LinearLayout>
二級購物車列表的適配器
public class CarExpandAdapter extends BaseExpandableListAdapter{
private Context context;
private List<Group> groupList;
private List<List<Child>> childList;
private ShoppingCartActivity s;
public static boolean flog;
public CarExpandAdapter(Context context, List<Group> groupList, List<List<Child>> childList,ShoppingCartActivity s) {
this.context = context;
this.groupList = groupList;
this.childList = childList;
this.s = s;
}
@Override
public int getGroupCount() {
return groupList.size();
}
@Override
public int getChildrenCount(int i) {
return childList.get(i).size();
}
@Override
public Object getGroup(int i) {
return groupList.get(i);
}
@Override
public Object getChild(int i, int i1) {
return childList.get(i).get(i1);
}
@Override
public long getGroupId(int i) {
return i;
}
@Override
public long getChildId(int i, int i1) {
return i1;
}
@Override
public boolean hasStableIds() {
return false;
}
//第一級列表viewhodel
class GroupViewHolder{
CheckBox group_box;
TextView group_tv;
}
//第二級列表的viewhodel
class ChildViewHodel{
CheckBox child_box;
ImageView child_iv;
TextView child_tv_name;
TextView child_tv_attr;
TextView child_tv_price;
TextView child_tv_num;
TextView child_tv_minus;
TextView child_tv_show_num;
TextView child_tv_add;
Button delete;
}
@Override
public View getGroupView(final int i, boolean b, View view, ViewGroup viewGroup) {
final GroupViewHolder holder;
if (view==null){
holder = new GroupViewHolder();
view = View.inflate(context, R.layout.group_layout,null);
holder.group_box = view.findViewById(R.id.group_box);
holder.group_tv = view.findViewById(R.id.group_tv);
view.setTag(holder);
}else{
holder = (GroupViewHolder) view.getTag();
}
holder.group_tv.setText(groupList.get(i).getName());
holder.group_box.setChecked(groupList.get(i).isFlag());
holder.group_box.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
//group布爾值變成選中狀態
groupList.get(i).setFlag(holder.group_box.isChecked());
//遍歷Group的集合
for (int i=0;i<groupList.size();i++){
//如果有一個未選中 全選變成FALSE并跳出
if (!groupList.get(i).isFlag()){
s.getisAll(false);
break;
}else{
s.getisAll(true);
}
}
//Child集合布爾值為選中的狀態
for (int j=0;j<childList.get(i).size();j++){
childList.get(i).get(j).setFlag(holder.group_box.isChecked());
}
//刷新適配器
notifyDataSetChanged();
s.js();
}
});
return view;
}
@Override
public View getChildView(final int i, final int i1, boolean b, View view, ViewGroup viewGroup) {
final ChildViewHodel hodel;
if (view == null){
hodel = new ChildViewHodel();
view = View.inflate(context,R.layout.child_layout,null);
hodel.child_box=view.findViewById(R.id.child_box);
hodel.child_iv = view.findViewById(R.id.child_iv);
hodel.child_tv_name = view.findViewById(R.id.child_tv_name);
hodel.child_tv_attr = view.findViewById(R.id.child_tv_attr);
hodel.child_tv_price = view.findViewById(R.id.child_tv_price);
hodel.child_tv_minus = view.findViewById(R.id.child_tv_minus);
hodel.child_tv_show_num = view.findViewById(R.id.child_tv_show_num);
hodel.child_tv_add = view.findViewById(R.id.child_tv_add);
hodel.child_tv_num = view.findViewById(R.id.child_tv_num);
hodel.delete=view.findViewById(R.id.delete);
view.setTag(hodel);
}else{
hodel = (ChildViewHodel) view.getTag();
}
hodel.child_tv_name.setText(childList.get(i).get(i1).getTitle());
hodel.child_tv_show_num.setText(childList.get(i).get(i1).getNum()+"");
hodel.child_tv_attr.setText(childList.get(i).get(i1).getColor());
hodel.child_tv_price.setText(childList.get(i).get(i1).getPrice()+"");
Glide.with(context).load(childList.get(i).get(i1).getImage().split("\\|")[0]).into(hodel.child_iv);
hodel.child_box.setChecked(childList.get(i).get(i1).isFlag());
//刪除的點擊事件,根據接口刪除的
hodel.delete.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
DeletePresenter presenter = new DeletePresenter(new DeleteView() {
@Override
public void onDeleteFailure(String error) {
Toast.makeText(context, error, Toast.LENGTH_SHORT).show();
}
@Override
public void onDeleteSuccesss(String code) {
Toast.makeText(context, "刪除成功", Toast.LENGTH_SHORT).show();
}
});
int pid = childList.get(i).get(i1).getPid();
presenter.verfiy(3381+"",pid+"");
childList.get(i).remove(i1);
// if (childList.get(i).size()==0){
// groupList.remove(i);
// }
notifyDataSetChanged();
}
});
hodel.child_box.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
//Child布爾值變成選中狀態
childList.get(i).get(i1).setFlag(hodel.child_box.isChecked());
//遍歷Child集合
for (int i=0;i<childList.size();i++){
for (int j=0;j<childList.get(i).size();j++){
//如果有一個未選中 全選與商家按鈕變成false并跳出
if(!childList.get(i).get(j).isFlag()){
groupList.get(i).setFlag(false);
s.getisAll(false);
break;
}else{//全部選中 全選與商家按鈕變成true
groupList.get(i).setFlag(true);
s.getisAll(false);
}
}
}
//二次遍歷
for(int i=0;i<groupList.size();i++){
boolean flag = groupList.get(i).isFlag();
if(flag){
s.getisAll(true);
}else{
s.getisAll(false);
break;
}
}
notifyDataSetChanged();
//計算加減
s.js();
}
});
////
hodel.child_tv_minus.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
String num = hodel.child_tv_show_num.getText().toString();
int num1 = Integer.parseInt(num);
num1--;
childList.get(i).get(i1).setNum(num1);
hodel.child_tv_show_num.setText(childList.get(i).get(i1).getNum()+"");
notifyDataSetChanged();
s.js();
}
});
hodel.child_tv_add.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
String num = hodel.child_tv_show_num.getText().toString();
int num1 = Integer.parseInt(num);
num1++;
childList.get(i).get(i1).setNum(num1);
hodel.child_tv_show_num.setText(childList.get(i).get(i1).getNum()+"");
notifyDataSetChanged();
s.js();
}
});
return view;
}
@Override
public boolean isChildSelectable(int i, int i1) {
return false;
}
}適配器的一級布局
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="horizontal" android:layout_width="match_parent" android:layout_height="match_parent"> <CheckBox android:id="@+id/group_box" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <TextView android:id="@+id/group_tv" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="商家" /> </LinearLayout>
適配器二級布局
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="horizontal" android:layout_width="match_parent" android:layout_height="wrap_content"> <CheckBox android:id="@+id/child_box" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerVertical="true" android:layout_marginLeft="5dp" android:scaleX="0.6" android:scaleY="0.6" /> <ImageView android:id="@+id/child_iv" android:layout_width="70dp" android:layout_height="80dp" android:layout_centerVertical="true" android:layout_marginLeft="5dp" android:background="@mipmap/ic_launcher" android:layout_toRightOf="@id/child_box" /> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="10dp" android:layout_marginTop="15dp" android:layout_toRightOf="@id/child_iv" android:orientation="vertical"> <TextView android:id="@+id/child_tv_name" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="酒紅色純紅色純羊毛西服套裝" android:textColor="@android:color/black" android:textSize="12sp" android:textStyle="bold" /> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="horizontal"> <TextView android:id="@+id/child_tv_attr" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="3dp" android:text="屬性:粉藍色" android:textSize="12sp" android:textColor="@color/colorPrimary" /> </LinearLayout> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="4dp" android:orientation="horizontal"> <TextView android:id="@+id/child_tv_price" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="¥390" android:textColor="@android:color/holo_red_dark" android:textSize="12sp" android:textStyle="bold" /> <TextView android:id="@+id/child_tv_num" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="20dp" android:text="x1" android:textColor="@android:color/darker_gray" /> <LinearLayout android:id="@+id/rl_edit" android:layout_width="120dp" android:background="@android:color/holo_orange_light" android:layout_height="30dp" android:layout_marginLeft="20dp" > <TextView android:id="@+id/child_tv_minus" android:layout_width="0dp" android:layout_weight="1" android:gravity="center" android:textColor="@android:color/black" android:background="@android:color/white" android:layout_margin="1dp" android:layout_height="match_parent" android:text=" - " /> <TextView android:id="@+id/child_tv_show_num" android:layout_width="0dp" android:layout_weight="1" android:gravity="center" android:background="@android:color/white" android:layout_margin="1dp" android:layout_height="match_parent" android:text="1" /> <TextView android:id="@+id/child_tv_add" android:layout_width="0dp" android:layout_weight="1" android:gravity="center" android:layout_margin="1dp" android:background="@android:color/white" android:layout_height="match_parent" android:text=" + " /> </LinearLayout> </LinearLayout> </LinearLayout> <Button android:id="@+id/delete" android:layout_width="30dp" android:layout_height="30dp" android:layout_alignParentRight="true" android:layout_centerVertical="true" android:gravity="center" android:text="?" android:background="@android:color/holo_blue_light" android:textSize="20sp" android:textColor="@android:color/holo_green_dark" android:layout_margin="5dp" android:visibility="visible" /> </RelativeLayout>
bean類Child
public class Child {
/*
false,
list.get(j).getTitle(),
(float) list.get(j).getPrice(),
list.get(j).getImages(),
list.get(j).getNum()
*/
private boolean flag;
private String title;
private double price;
private String image;
private int num;
private String color;
private int pid;
public Child(boolean flag, String title, double price, String image, int num,String color,int pid) {
this.flag = flag;
this.title = title;
this.price = price;
this.image = image;
this.num = num;
this.color = color;
this.pid = pid;
}
public boolean isFlag() {
return flag;
}
public void setFlag(boolean flag) {
this.flag = flag;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public double getPrice() {
return price;
}
public void setPrice(double price) {
this.price = price;
}
public String getImage() {
return image;
}
public void setImage(String image) {
this.image = image;
}
public int getNum() {
return num;
}
public void setNum(int num) {
this.num = num;
}
public String getColor() {
return color;
}
public void setColor(String color) {
this.color = color;
}
public int getPid() {
return pid;
}
public void setPid(int pid) {
this.pid = pid;
}
}group類
public class Group {
private boolean flag;
private String name;
public Group(boolean flag, String name) {
this.flag = flag;
this.name = name;
}
public boolean isFlag() {
return flag;
}
public void setFlag(boolean flag) {
this.flag = flag;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}看完上述內容,你們掌握Android 中怎么利用Okhttp請求查詢購物車的方法了嗎?如果還想學到更多技能或想了解更多相關內容,歡迎關注億速云行業資訊頻道,感謝各位的閱讀!
免責聲明:本站發布的內容(圖片、視頻和文字)以原創、轉載和分享為主,文章觀點不代表本網站立場,如果涉及侵權請聯系站長郵箱:is@yisu.com進行舉報,并提供相關證據,一經查實,將立刻刪除涉嫌侵權內容。