我需要使用增加或减少项目数量的选项来执行添加到购物车功能
I need to perform add to cart functionality with the option of increment or decrement quantity of item
product quantity changes button 但是当我点击添加到购物车按钮并将可见性更改为 gone others + , - buttons visibility to visible show on the screen 然后我点击这两个按钮中的任何一个，他们的听众没有' 工作，重新启动应用程序后 + ， - 按钮开始正常工作。还有一件事，如果一种产品已经在购物车中然后更改其数量，我需要我的通知徽章值不应该更改，但在我的情况下，如果我增加或减少产品的数量，值会改变。提前致谢
主页片段
package colon.semi.com.dealMall.fragments;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.SharedPreferences;
import android.graphics.Color;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import android.widget.Toast;
import androidx.fragment.app.Fragment;
import androidx.lifecycle.Observer;
import androidx.lifecycle.ViewModelProvider;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import com.smarteist.autoimageslider.SliderAnimations;
import com.smarteist.autoimageslider.SliderView;
import java.util.ArrayList;
import java.util.List;
import colon.semi.com.dealMall.R;
import colon.semi.com.dealMall.Utils.AppClass;
import colon.semi.com.dealMall.Utils.Constants;
import colon.semi.com.dealMall.adapters.DealsSliderAdapter;
import colon.semi.com.dealMall.adapters.DevicesParentRecyclerAdapter;
import colon.semi.com.dealMall.adapters.SliderAdapterExample;
import colon.semi.com.dealMall.adapters.TopSellingAdapter;
import colon.semi.com.dealMall.dataModels.CartDataTable;
import colon.semi.com.dealMall.dataModels.CartResponse;
import colon.semi.com.dealMall.dataModels.HomeDataModel;
import colon.semi.com.dealMall.dataModels.ImagesListDM;
import colon.semi.com.dealMall.dataModels.Points;
import colon.semi.com.dealMall.dataModels.Product;
import colon.semi.com.dealMall.dataModels.SliderImagesResponse;
import colon.semi.com.dealMall.dataModels.TopSellingResponse;
import colon.semi.com.dealMall.viewModels.CartViewModel;
import colon.semi.com.dealMall.viewModels.HomeFragmentViewModel;
import colon.semi.com.dealMall.viewModels.PointsViewModel;
public class HomeFragment extends Fragment {
HomeFragmentViewModel homeFragmentViewModel;
View view;
SliderView sliderView;
SliderView imageSliderDeals;
RecyclerView recyclerView;
private ArrayList<String> listTitleRecycler = new ArrayList<>();
DevicesParentRecyclerAdapter homeParentRecyclerAdapter;
boolean topSellingComplete = false;
boolean latestComplete = false;
boolean allproductsComplete = false;
HomeDataModel homeDataModel = new HomeDataModel();
CartViewModel cartViewModel;
ProgressDialog progressDialog;
RecyclerView recylerTimeDeal;
TopSellingAdapter timeDealAdapter;
int[] imgResLounge = {R.drawable.ic_get_free, R.drawable.ic_seasonal_deals,
R.drawable.ic_grocery_deals,
R.drawable.ic_stationary_deals};
//CategoryNames
String[] imgNamesLounge = {"Men\nLounge", "Women\nLounge", "Cosmetic\nLounge", "Garments\nLounge"};
//Liststudent ERP OBJECT
ArrayList<ImagesListDM> loungeList = new ArrayList<>();
SharedPreferences sharedPreferences;
private TextView totalPointsTextView;
private TextView totalPrice;
private PointsViewModel pointsViewModel;
private View viewParent;
private boolean isLogin;
private int userId;
private List<CartDataTable> cartDataTableList = new ArrayList<>();
private int pos;
private int pQun;
private int pId;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
view = inflater.inflate(R.layout.fragment_home, container, false);
initViews();
initListeners();
getSliderImages();
// getCartItem();
isLogin = sharedPreferences.getBoolean(Constants.USER_IS_LOGIN, false);
if (Constants.topSellingProduct != null) {
if (!Constants.topSellingProduct.isEmpty()) {
recylerTimeDeal.setLayoutManager(new LinearLayoutManager(getActivity(),
LinearLayoutManager.HORIZONTAL, false));
timeDealAdapter = new TopSellingAdapter(Constants.topSellingProduct, cartDataTableList,
getActivity());
recylerTimeDeal.setAdapter(timeDealAdapter);
clickListner(view);
}
} else {
getTopSellingProducts(1);
}
if (Constants.latestProduct != null) {
if (!Constants.latestProduct.isEmpty()) {
homeDataModel.setLatestList(Constants.latestProduct);
homeParentRecyclerAdapter = new DevicesParentRecyclerAdapter(getActivity(),
homeDataModel);
recyclerView.setAdapter(homeParentRecyclerAdapter);
}
} else {
getLatestProducts(1);
}
if (Constants.allProducts != null) {
if (!Constants.allProducts.isEmpty()) {
homeDataModel.setAllProductList(Constants.allProducts);
homeParentRecyclerAdapter = new DevicesParentRecyclerAdapter(getActivity(),
homeDataModel);
recyclerView.setAdapter(homeParentRecyclerAdapter);
}
} else {
getAllProducts(1);
}
return view;
}
@Override
public void onResume() {
isLogin = sharedPreferences.getBoolean(Constants.USER_IS_LOGIN, false);
// if (isLogin) {
userId = sharedPreferences.getInt(Constants.USER_ID, 0);
cartViewModel.getCartDataTableLiveData(userId).observe(getActivity(), new
Observer<List<CartDataTable>>() {
@Override
public void onChanged(List<CartDataTable> cartDataTables) {
if (cartDataTables != null) {
cartDataTableList = cartDataTables;
}
});
//}
super.onResume();
}
private void clickListner(View view1) {
timeDealAdapter.setOnItemClickListener(new TopSellingAdapter.OnItemClickListener() {
@Override
public void onAddtoCartClick(View view, Product product) {
Log.e("onAddtoCartClick", "called");
userId = sharedPreferences.getInt(Constants.USER_ID, 0);
progressDialog = new ProgressDialog(getActivity());
progressDialog.setIndeterminate(true);
progressDialog.setMessage("Please Wait...");
progressDialog.setCancelable(false);
progressDialog.setCanceledOnTouchOutside(false);
progressDialog.show();
viewParent = (View) view.getParent();
progressDialog.dismiss();
int quantity = 1;
cartViewModel.addProductToCart(userId, product.getProduct_id(),
quantity).observe(getActivity(), new Observer<CartResponse>() {
@Override
public void onChanged(CartResponse cartResponse) {
if (cartResponse != null) {
progressDialog.dismiss();
if (cartResponse.getMessage().equals("Product added successfully")) {
progressDialog.dismiss();
CartDataTable cartDataTable = new CartDataTable();
cartDataTable.setProductId(product.getProduct_id());
cartDataTable.setProductQuantity(1);
cartDataTable.setUserId(userId);
cartViewModel.insertCart(cartDataTable);
progressDialog.invalidateOptionsMenu();
} else {
Toast.makeText(getActivity(), cartResponse.getMessage(),
Toast.LENGTH_SHORT).show();
}
} else {
Toast.makeText(getActivity(), "Something went wrong",
Toast.LENGTH_SHORT).show();
}
}
});
}
@Override
public void updateCartData(int productId, int quantity, int position, View view) {
pId = productId;
pQun = quantity;
pos = position;
viewParent = (View) view.getParent();
Log.d("updateCartData2", pId + " " + pQun);
CartDataTable cartDataTable = cartViewModel.getCart2(productId, userId);
userId = sharedPreferences.getInt(Constants.USER_ID, 0);
Log.d("userId2", String.valueOf(userId));
if (cartDataTable != null) {
if (pQun == 0) {
cartViewModel.deleteCart(cartDataTable);
} else {
CartDataTable cartDataTable1 = new CartDataTable();
cartDataTable1.setProductQuantity(pQun);
cartDataTable1.setProductId(pId);
cartDataTable1.setCartId(cartDataTable.getCartId());
cartDataTable1.setUserId(userId);
cartViewModel.updateCart(cartDataTable1);
Log.d("cart2", "updated");
}
}
}
});
}
private void getSliderImages() {
if (AppClass.isOnline(getActivity())) {
homeFragmentViewModel.getSliderImages().observe(getActivity(), new
Observer<SliderImagesResponse>() {
@Override
public void onChanged(SliderImagesResponse sliderImagesResponse) {
if (sliderImagesResponse.getStatus() == 1) {
SliderAdapterExample adapter = new SliderAdapterExample(getContext(),
sliderImagesResponse.getData());
sliderView.setSliderAdapter(adapter);
sliderView.setSliderTransformAnimation(SliderAnimations.SIMPLETRANSFORMATION);
sliderView.setAutoCycleDirection(SliderView.AUTO_CYCLE_DIRECTION_BACK_AND_FORTH);
sliderView.setIndicatorSelectedColor(Color.WHITE);
sliderView.setIndicatorUnselectedColor(Color.GRAY);
sliderView.setScrollTimeInSec(4); //set scroll delay in seconds :
sliderView.startAutoCycle();
} else {
progressDialog.dismiss();
Toast.makeText(getContext(), ""+sliderImagesResponse.getMessage(),
Toast.LENGTH_SHORT).show();
}
}
});
} else {
AppClass.offline(getActivity());
}
}
private void getTopSellingProducts(int page) {
if (AppClass.isOnline(getActivity())) {
progressDialog.show();
homeFragmentViewModel.getTopSellingProducts(page).observe(getActivity(), new
Observer<TopSellingResponse>() {
@Override
public void onChanged(TopSellingResponse topSellingResponse) {
if (topSellingResponse.getStatus() == 1) {
progressDialog.dismiss();
topSellingComplete = true;
Constants.topSellingProduct = topSellingResponse.getData();
recylerTimeDeal.setLayoutManager(new LinearLayoutManager(getActivity(),
LinearLayoutManager.HORIZONTAL, false));
timeDealAdapter = new TopSellingAdapter(topSellingResponse.getData(),
cartDataTableList, getActivity());
recylerTimeDeal.setAdapter(timeDealAdapter);
clickListner(view);
if (latestComplete || allproductsComplete) {
homeParentRecyclerAdapter.notifyDataSetChanged();
} else {
homeParentRecyclerAdapter = new DevicesParentRecyclerAdapter(getActivity(),
homeDataModel);
recyclerView.setAdapter(homeParentRecyclerAdapter);
}
} else {
progressDialog.dismiss();
Toast.makeText(getContext(), ""+topSellingResponse.getMessage(),
Toast.LENGTH_SHORT).show();
}
}
});
} else {
AppClass.offline(getActivity());
}
}
private void getLatestProducts(int page) {
if (AppClass.isOnline(getActivity())) {
progressDialog.show();
homeFragmentViewModel.getLatestProducts(page).observe(getActivity(), new
Observer<TopSellingResponse>() {
@Override
public void onChanged(TopSellingResponse topSellingResponse) {
if (topSellingResponse.getStatus() == 1) {
progressDialog.dismiss();
latestComplete = true;
Constants.latestProduct = topSellingResponse.getData();
homeDataModel.setLatestList(topSellingResponse.getData());
if(topSellingComplete || allproductsComplete) {
homeParentRecyclerAdapter.notifyDataSetChanged();
} else {
homeParentRecyclerAdapter = new DevicesParentRecyclerAdapter(getActivity(),
homeDataModel);
recyclerView.setAdapter(homeParentRecyclerAdapter);
}
} else {
progressDialog.dismiss();
Toast.makeText(getContext(), ""+topSellingResponse.getMessage(),
Toast.LENGTH_SHORT).show();
}
}
});
} else {
AppClass.offline(getActivity());
}
}
private void getAllProducts(int page) {
if (AppClass.isOnline(getActivity())) {
progressDialog.show();
homeFragmentViewModel.getAllProducts(page).observe(getActivity(), new
Observer<TopSellingResponse>() {
@Override
public void onChanged(TopSellingResponse topSellingResponse) {
if (topSellingResponse.getStatus() == 1) {
progressDialog.dismiss();
allproductsComplete = true;
Constants.allProducts = topSellingResponse.getData();
homeDataModel.setAllProductList(topSellingResponse.getData());
if(topSellingComplete || latestComplete) {
homeParentRecyclerAdapter.notifyDataSetChanged();
} else {
homeParentRecyclerAdapter = new DevicesParentRecyclerAdapter(getActivity(),
homeDataModel);
recyclerView.setAdapter(homeParentRecyclerAdapter);
}
} else {
progressDialog.dismiss();
Toast.makeText(getContext(), ""+topSellingResponse.getMessage(),
Toast.LENGTH_SHORT).show();
}
}
});
} else {
AppClass.offline(getActivity());
}
}
private void getPoints(int userId) {
pointsViewModel.getUserPointsById(userId).observe(getActivity(), new Observer<Points>() {
@Override
public void onChanged(Points points) {
progressDialog.dismiss();
if (points.getStatus() == 1) {
progressDialog.dismiss();
if (points.getTotalPoints() != null && points.getTotalDiscount() != null) {
totalPointsTextView.setText(points.getTotalPoints() + "");
totalPrice.setText(points.getTotalDiscount() + "");
} else {
Toast.makeText(getActivity(), "No Data Found", Toast.LENGTH_SHORT).show();
}
} else {
progressDialog.dismiss();
Toast.makeText(getActivity(), points.getMessage(), Toast.LENGTH_SHORT).show();
}
}
});
}
private void initViews() {
homeFragmentViewModel = new ViewModelProvider(this).get(HomeFragmentViewModel.class);
cartViewModel = new ViewModelProvider(this).get(CartViewModel.class);
sliderView = view.findViewById(R.id.imageSlider);
imageSliderDeals = view.findViewById(R.id.imageSliderDeals);
recyclerView = view.findViewById(R.id.recyclerView);
recylerTimeDeal = view.findViewById(R.id.recy_timeDeal);
totalPointsTextView = view.findViewById(R.id.pointsTextView);
totalPrice = view.findViewById(R.id.totalPrice);
pointsViewModel = new ViewModelProvider(this).get(PointsViewModel.class);
sharedPreferences = getActivity().getSharedPreferences(Constants.LOGIN_PREFERENCE,
Context.MODE_PRIVATE);
int userId = sharedPreferences.getInt(Constants.USER_ID, 0);
listTitleRecycler.add(0, "Top Selling");
listTitleRecycler.add(1, "Latest Products");
listTitleRecycler.add(2, "All Products");
homeDataModel.setTitleList(listTitleRecycler);
recyclerView.setLayoutManager(new LinearLayoutManager(getActivity(),
LinearLayoutManager.VERTICAL, false));
recyclerView.setHasFixedSize(true);
progressDialog = new ProgressDialog(getContext(), R.style.exitDialogTheme);
progressDialog.setIndeterminate(true);
progressDialog.setMessage("Please wait...");
progressDialog.setCancelable(false);
progressDialog.setCanceledOnTouchOutside(false);
getPoints(userId);
}
private void initListeners() {
addLoungeToList();
DealsSliderAdapter adapter = new DealsSliderAdapter(getContext(), loungeList);
imageSliderDeals.setSliderAdapter(adapter);
imageSliderDeals.setSliderTransformAnimation(SliderAnimations.SIMPLETRANSFORMATION);
imageSliderDeals.setAutoCycleDirection(SliderView.AUTO_CYCLE_DIRECTION_BACK_AND_FORTH);
imageSliderDeals.setScrollTimeInSec(4); //set scroll delay in seconds :
imageSliderDeals.startAutoCycle();
}
public void addLoungeToList() {
int i = 0;
for (String name : imgNamesLounge) {
ImagesListDM imagesListDM = new ImagesListDM();
imagesListDM.setImg(imgResLounge[i]);
imagesListDM.setNameImg(name);
loungeList.add(imagesListDM);
i++;
}
}
}
畅销适配器
package colon.semi.com.dealMall.adapters;
import android.content.Context;
import android.content.Intent;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.TextView;
import android.widget.Toast;
import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;
import com.bumptech.glide.Glide;
import com.bumptech.glide.Priority;
import com.bumptech.glide.load.engine.DiskCacheStrategy;
import com.bumptech.glide.request.RequestOptions;
import java.util.ArrayList;
import java.util.List;
import colon.semi.com.dealMall.R;
import colon.semi.com.dealMall.Utils.Constants;
import colon.semi.com.dealMall.dataModels.CartDataTable;
import colon.semi.com.dealMall.dataModels.Product;
import colon.semi.com.dealMall.uiActivities.ProductDetailActivity;
public class
TopSellingAdapter extends RecyclerView.Adapter<TopSellingAdapter.SingleItemRowHolder> {
private static OnItemClickListener mlistener; //just a variable
private ArrayList<Product> topSellingList;
private Context context;
private List<CartDataTable> cartDataTables;
int[] quantity;int[] pid;
int size;
public TopSellingAdapter(ArrayList<Product> topSellingList, List<CartDataTable> cartDataTableList, Context context) {
this.topSellingList = topSellingList;
this.cartDataTables = cartDataTableList;
this.context = context;
}
@Override
public void onBindViewHolder(@NonNull SingleItemRowHolder holder, final int position) {
SingleItemRowHolder viewHolder = (SingleItemRowHolder) holder;
Product product = topSellingList.get(position);
RequestOptions options = new RequestOptions()
.centerInside()
.diskCacheStrategy(DiskCacheStrategy.AUTOMATIC)
.skipMemoryCache(true)
.priority(Priority.HIGH);
Glide
.with(context)
.load(topSellingList.get(position).getImage_name())
.apply(options)
.into(viewHolder.image);
viewHolder.name.setText(topSellingList.get(position).getProduct_title());
viewHolder.price.setText(topSellingList.get(position).getPrice());
viewHolder.linear_label.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent intent = new Intent(context, ProductDetailActivity.class);
intent.putExtra(Constants.PRODUCT_OBJECT, product);
context.startActivity(intent);
}
});
holder.addtocart.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if(mlistener!=null && position != RecyclerView.NO_POSITION){
viewHolder.addtocart.setVisibility(View.GONE);
viewHolder.cartLayout.setVisibility(View.VISIBLE);
viewHolder.quanTv.setText("1");
mlistener.onAddtoCartClick(v, topSellingList.get(position));
}
}
});
if (cartDataTables != null && cartDataTables.size() > 0) {
for (int i = 0; i < cartDataTables.size(); i++) {
if (cartDataTables.get(i).getProductId() == product.getProduct_id()) {
viewHolder.addtocart.setVisibility(View.GONE);
viewHolder.cartLayout.setVisibility(View.VISIBLE);
viewHolder.quanTv.setText(String.valueOf(cartDataTables.get(i).getProductQuantity()));
}
}
size = cartDataTables.size();
quantity = new int[size];
pid = new int[size];
}
// if (cartDataTables != null && cartDataTables.size() > 0) {
// int size = cartDataTables.size();
// int[] quantity = new int[size];
// int[] pid = new int[size];
Log.d("CartDataSize", String.valueOf(size));
for (int i = 0; i < size; i++) {
quantity[i] = cartDataTables.get(i).getProductQuantity();
pid[i] = cartDataTables.get(i).getProductId();
Log.d("CartData1", quantity[i] + " " + pid[i]);
}
holder.addProdButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
for (int i = 0; i < size; i++) {
quantity[i]++;
viewHolder.quanTv.setText(String.valueOf(quantity[i]));
}
// int id = pid[size - 1];
//int q1 = quantity[size - 1];
// Log.d("q1", String.valueOf(q1));
for (int i = 0; i < size; i++) {
if (cartDataTables.get(i).getProductId() == product.getProduct_id()) {
// q1 = q1 + 1;
//Log.d("q2", String.valueOf(q1));
//Toast.makeText(context, String.valueOf(q1), Toast.LENGTH_SHORT).show();
mlistener.updateCartData(pid[i], quantity[i], holder.getAdapterPosition(), v);
}
else {
mlistener.updateCartData(pid[i], quantity[i], holder.getAdapterPosition(), v);
}
}
}
});
holder.minusProdButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
for (int i = 0; i < size; i++) {
if (quantity[i] < 1) {
holder.cartLayout.setVisibility(View.GONE);
holder.addtocart.setVisibility(View.VISIBLE);
} else {
quantity[i]--;
if (quantity[i] < 1) {
holder.cartLayout.setVisibility(View.GONE);
holder.addtocart.setVisibility(View.VISIBLE);
}
viewHolder.quanTv.setText(String.valueOf(quantity[i]));
}
}
Toast.makeText(context, "Already added", Toast.LENGTH_SHORT).show();
for (int i = 0; i < size; i++) {
if (cartDataTables.get(i).getProductId() == product.getProduct_id()) {
mlistener.updateCartData(pid[i], quantity[i], holder.getAdapterPosition(),
v);
}
else {
mlistener.updateCartData(pid[i], quantity[i], holder.getAdapterPosition(), v);
}
}
}
});
}
@NonNull
@Override
public SingleItemRowHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {
View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.temp_top_selling_products, viewGroup, false);
SingleItemRowHolder categoriesListVH = new SingleItemRowHolder(view);
return categoriesListVH;
}
@Override
public int getItemCount() {
return (null != topSellingList ? topSellingList.size() : 0);
}
public void setOnItemClickListener(OnItemClickListener listener) {
this.mlistener = listener;
}
public interface OnItemClickListener {
void onAddtoCartClick(View view, Product product);
void updateCartData(int productId, int quantity, int position, View view);
}
public class SingleItemRowHolder extends RecyclerView.ViewHolder {
ImageView image;
TextView name;
TextView price;
LinearLayout linear_label;
Button addtocart;
Button addProdButton;
Button minusProdButton;
TextView quanTv;
RelativeLayout cartLayout;
public SingleItemRowHolder(View view) {
super(view);
image = view.findViewById(R.id.image);
name = view.findViewById(R.id.name);
price = view.findViewById(R.id.price);
linear_label = view.findViewById(R.id.linear_label);
addtocart = view.findViewById(R.id.addToCartButtonHome);
cartLayout = view.findViewById(R.id.rel_prodCart_home);
addProdButton = view.findViewById(R.id.prodAddButtonHome);
quanTv = view.findViewById(R.id.productQuanTextViewHome);
minusProdButton = view.findViewById(R.id.prodMinusButtonHome);
}
}
}
第一次调用适配器构造函数时，cartDataTables 列表中没有数据，并且由于我的条件 if (cartDataTables != null && cartDataTables.size() > 0)，当我单击“添加到购物车”按钮时，它们在 cartDataTables 列表中没有发现数据，因为我没有调用 notifyDataSetChanged() 方法或再次调用适配器构造函数，并且我的 addtocart 点击监听器在这种情况下 if (cartDataTables != null && cartDataTables.size() > 0)这就是为什么添加到购物车按钮点击监听器不起作用的原因。
解决方法：再次调用适配器构造函数。
product quantity changes button 但是当我点击添加到购物车按钮并将可见性更改为 gone others + , - buttons visibility to visible show on the screen 然后我点击这两个按钮中的任何一个，他们的听众没有' 工作，重新启动应用程序后 + ， - 按钮开始正常工作。还有一件事，如果一种产品已经在购物车中然后更改其数量，我需要我的通知徽章值不应该更改，但在我的情况下，如果我增加或减少产品的数量，值会改变。提前致谢
主页片段
package colon.semi.com.dealMall.fragments;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.SharedPreferences;
import android.graphics.Color;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import android.widget.Toast;
import androidx.fragment.app.Fragment;
import androidx.lifecycle.Observer;
import androidx.lifecycle.ViewModelProvider;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import com.smarteist.autoimageslider.SliderAnimations;
import com.smarteist.autoimageslider.SliderView;
import java.util.ArrayList;
import java.util.List;
import colon.semi.com.dealMall.R;
import colon.semi.com.dealMall.Utils.AppClass;
import colon.semi.com.dealMall.Utils.Constants;
import colon.semi.com.dealMall.adapters.DealsSliderAdapter;
import colon.semi.com.dealMall.adapters.DevicesParentRecyclerAdapter;
import colon.semi.com.dealMall.adapters.SliderAdapterExample;
import colon.semi.com.dealMall.adapters.TopSellingAdapter;
import colon.semi.com.dealMall.dataModels.CartDataTable;
import colon.semi.com.dealMall.dataModels.CartResponse;
import colon.semi.com.dealMall.dataModels.HomeDataModel;
import colon.semi.com.dealMall.dataModels.ImagesListDM;
import colon.semi.com.dealMall.dataModels.Points;
import colon.semi.com.dealMall.dataModels.Product;
import colon.semi.com.dealMall.dataModels.SliderImagesResponse;
import colon.semi.com.dealMall.dataModels.TopSellingResponse;
import colon.semi.com.dealMall.viewModels.CartViewModel;
import colon.semi.com.dealMall.viewModels.HomeFragmentViewModel;
import colon.semi.com.dealMall.viewModels.PointsViewModel;
public class HomeFragment extends Fragment {
HomeFragmentViewModel homeFragmentViewModel;
View view;
SliderView sliderView;
SliderView imageSliderDeals;
RecyclerView recyclerView;
private ArrayList<String> listTitleRecycler = new ArrayList<>();
DevicesParentRecyclerAdapter homeParentRecyclerAdapter;
boolean topSellingComplete = false;
boolean latestComplete = false;
boolean allproductsComplete = false;
HomeDataModel homeDataModel = new HomeDataModel();
CartViewModel cartViewModel;
ProgressDialog progressDialog;
RecyclerView recylerTimeDeal;
TopSellingAdapter timeDealAdapter;
int[] imgResLounge = {R.drawable.ic_get_free, R.drawable.ic_seasonal_deals,
R.drawable.ic_grocery_deals,
R.drawable.ic_stationary_deals};
//CategoryNames
String[] imgNamesLounge = {"Men\nLounge", "Women\nLounge", "Cosmetic\nLounge", "Garments\nLounge"};
//Liststudent ERP OBJECT
ArrayList<ImagesListDM> loungeList = new ArrayList<>();
SharedPreferences sharedPreferences;
private TextView totalPointsTextView;
private TextView totalPrice;
private PointsViewModel pointsViewModel;
private View viewParent;
private boolean isLogin;
private int userId;
private List<CartDataTable> cartDataTableList = new ArrayList<>();
private int pos;
private int pQun;
private int pId;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
view = inflater.inflate(R.layout.fragment_home, container, false);
initViews();
initListeners();
getSliderImages();
// getCartItem();
isLogin = sharedPreferences.getBoolean(Constants.USER_IS_LOGIN, false);
if (Constants.topSellingProduct != null) {
if (!Constants.topSellingProduct.isEmpty()) {
recylerTimeDeal.setLayoutManager(new LinearLayoutManager(getActivity(),
LinearLayoutManager.HORIZONTAL, false));
timeDealAdapter = new TopSellingAdapter(Constants.topSellingProduct, cartDataTableList,
getActivity());
recylerTimeDeal.setAdapter(timeDealAdapter);
clickListner(view);
}
} else {
getTopSellingProducts(1);
}
if (Constants.latestProduct != null) {
if (!Constants.latestProduct.isEmpty()) {
homeDataModel.setLatestList(Constants.latestProduct);
homeParentRecyclerAdapter = new DevicesParentRecyclerAdapter(getActivity(),
homeDataModel);
recyclerView.setAdapter(homeParentRecyclerAdapter);
}
} else {
getLatestProducts(1);
}
if (Constants.allProducts != null) {
if (!Constants.allProducts.isEmpty()) {
homeDataModel.setAllProductList(Constants.allProducts);
homeParentRecyclerAdapter = new DevicesParentRecyclerAdapter(getActivity(),
homeDataModel);
recyclerView.setAdapter(homeParentRecyclerAdapter);
}
} else {
getAllProducts(1);
}
return view;
}
@Override
public void onResume() {
isLogin = sharedPreferences.getBoolean(Constants.USER_IS_LOGIN, false);
// if (isLogin) {
userId = sharedPreferences.getInt(Constants.USER_ID, 0);
cartViewModel.getCartDataTableLiveData(userId).observe(getActivity(), new
Observer<List<CartDataTable>>() {
@Override
public void onChanged(List<CartDataTable> cartDataTables) {
if (cartDataTables != null) {
cartDataTableList = cartDataTables;
}
});
//}
super.onResume();
}
private void clickListner(View view1) {
timeDealAdapter.setOnItemClickListener(new TopSellingAdapter.OnItemClickListener() {
@Override
public void onAddtoCartClick(View view, Product product) {
Log.e("onAddtoCartClick", "called");
userId = sharedPreferences.getInt(Constants.USER_ID, 0);
progressDialog = new ProgressDialog(getActivity());
progressDialog.setIndeterminate(true);
progressDialog.setMessage("Please Wait...");
progressDialog.setCancelable(false);
progressDialog.setCanceledOnTouchOutside(false);
progressDialog.show();
viewParent = (View) view.getParent();
progressDialog.dismiss();
int quantity = 1;
cartViewModel.addProductToCart(userId, product.getProduct_id(),
quantity).observe(getActivity(), new Observer<CartResponse>() {
@Override
public void onChanged(CartResponse cartResponse) {
if (cartResponse != null) {
progressDialog.dismiss();
if (cartResponse.getMessage().equals("Product added successfully")) {
progressDialog.dismiss();
CartDataTable cartDataTable = new CartDataTable();
cartDataTable.setProductId(product.getProduct_id());
cartDataTable.setProductQuantity(1);
cartDataTable.setUserId(userId);
cartViewModel.insertCart(cartDataTable);
progressDialog.invalidateOptionsMenu();
} else {
Toast.makeText(getActivity(), cartResponse.getMessage(),
Toast.LENGTH_SHORT).show();
}
} else {
Toast.makeText(getActivity(), "Something went wrong",
Toast.LENGTH_SHORT).show();
}
}
});
}
@Override
public void updateCartData(int productId, int quantity, int position, View view) {
pId = productId;
pQun = quantity;
pos = position;
viewParent = (View) view.getParent();
Log.d("updateCartData2", pId + " " + pQun);
CartDataTable cartDataTable = cartViewModel.getCart2(productId, userId);
userId = sharedPreferences.getInt(Constants.USER_ID, 0);
Log.d("userId2", String.valueOf(userId));
if (cartDataTable != null) {
if (pQun == 0) {
cartViewModel.deleteCart(cartDataTable);
} else {
CartDataTable cartDataTable1 = new CartDataTable();
cartDataTable1.setProductQuantity(pQun);
cartDataTable1.setProductId(pId);
cartDataTable1.setCartId(cartDataTable.getCartId());
cartDataTable1.setUserId(userId);
cartViewModel.updateCart(cartDataTable1);
Log.d("cart2", "updated");
}
}
}
});
}
private void getSliderImages() {
if (AppClass.isOnline(getActivity())) {
homeFragmentViewModel.getSliderImages().observe(getActivity(), new
Observer<SliderImagesResponse>() {
@Override
public void onChanged(SliderImagesResponse sliderImagesResponse) {
if (sliderImagesResponse.getStatus() == 1) {
SliderAdapterExample adapter = new SliderAdapterExample(getContext(),
sliderImagesResponse.getData());
sliderView.setSliderAdapter(adapter);
sliderView.setSliderTransformAnimation(SliderAnimations.SIMPLETRANSFORMATION);
sliderView.setAutoCycleDirection(SliderView.AUTO_CYCLE_DIRECTION_BACK_AND_FORTH);
sliderView.setIndicatorSelectedColor(Color.WHITE);
sliderView.setIndicatorUnselectedColor(Color.GRAY);
sliderView.setScrollTimeInSec(4); //set scroll delay in seconds :
sliderView.startAutoCycle();
} else {
progressDialog.dismiss();
Toast.makeText(getContext(), ""+sliderImagesResponse.getMessage(),
Toast.LENGTH_SHORT).show();
}
}
});
} else {
AppClass.offline(getActivity());
}
}
private void getTopSellingProducts(int page) {
if (AppClass.isOnline(getActivity())) {
progressDialog.show();
homeFragmentViewModel.getTopSellingProducts(page).observe(getActivity(), new
Observer<TopSellingResponse>() {
@Override
public void onChanged(TopSellingResponse topSellingResponse) {
if (topSellingResponse.getStatus() == 1) {
progressDialog.dismiss();
topSellingComplete = true;
Constants.topSellingProduct = topSellingResponse.getData();
recylerTimeDeal.setLayoutManager(new LinearLayoutManager(getActivity(),
LinearLayoutManager.HORIZONTAL, false));
timeDealAdapter = new TopSellingAdapter(topSellingResponse.getData(),
cartDataTableList, getActivity());
recylerTimeDeal.setAdapter(timeDealAdapter);
clickListner(view);
if (latestComplete || allproductsComplete) {
homeParentRecyclerAdapter.notifyDataSetChanged();
} else {
homeParentRecyclerAdapter = new DevicesParentRecyclerAdapter(getActivity(),
homeDataModel);
recyclerView.setAdapter(homeParentRecyclerAdapter);
}
} else {
progressDialog.dismiss();
Toast.makeText(getContext(), ""+topSellingResponse.getMessage(),
Toast.LENGTH_SHORT).show();
}
}
});
} else {
AppClass.offline(getActivity());
}
}
private void getLatestProducts(int page) {
if (AppClass.isOnline(getActivity())) {
progressDialog.show();
homeFragmentViewModel.getLatestProducts(page).observe(getActivity(), new
Observer<TopSellingResponse>() {
@Override
public void onChanged(TopSellingResponse topSellingResponse) {
if (topSellingResponse.getStatus() == 1) {
progressDialog.dismiss();
latestComplete = true;
Constants.latestProduct = topSellingResponse.getData();
homeDataModel.setLatestList(topSellingResponse.getData());
if(topSellingComplete || allproductsComplete) {
homeParentRecyclerAdapter.notifyDataSetChanged();
} else {
homeParentRecyclerAdapter = new DevicesParentRecyclerAdapter(getActivity(),
homeDataModel);
recyclerView.setAdapter(homeParentRecyclerAdapter);
}
} else {
progressDialog.dismiss();
Toast.makeText(getContext(), ""+topSellingResponse.getMessage(),
Toast.LENGTH_SHORT).show();
}
}
});
} else {
AppClass.offline(getActivity());
}
}
private void getAllProducts(int page) {
if (AppClass.isOnline(getActivity())) {
progressDialog.show();
homeFragmentViewModel.getAllProducts(page).observe(getActivity(), new
Observer<TopSellingResponse>() {
@Override
public void onChanged(TopSellingResponse topSellingResponse) {
if (topSellingResponse.getStatus() == 1) {
progressDialog.dismiss();
allproductsComplete = true;
Constants.allProducts = topSellingResponse.getData();
homeDataModel.setAllProductList(topSellingResponse.getData());
if(topSellingComplete || latestComplete) {
homeParentRecyclerAdapter.notifyDataSetChanged();
} else {
homeParentRecyclerAdapter = new DevicesParentRecyclerAdapter(getActivity(),
homeDataModel);
recyclerView.setAdapter(homeParentRecyclerAdapter);
}
} else {
progressDialog.dismiss();
Toast.makeText(getContext(), ""+topSellingResponse.getMessage(),
Toast.LENGTH_SHORT).show();
}
}
});
} else {
AppClass.offline(getActivity());
}
}
private void getPoints(int userId) {
pointsViewModel.getUserPointsById(userId).observe(getActivity(), new Observer<Points>() {
@Override
public void onChanged(Points points) {
progressDialog.dismiss();
if (points.getStatus() == 1) {
progressDialog.dismiss();
if (points.getTotalPoints() != null && points.getTotalDiscount() != null) {
totalPointsTextView.setText(points.getTotalPoints() + "");
totalPrice.setText(points.getTotalDiscount() + "");
} else {
Toast.makeText(getActivity(), "No Data Found", Toast.LENGTH_SHORT).show();
}
} else {
progressDialog.dismiss();
Toast.makeText(getActivity(), points.getMessage(), Toast.LENGTH_SHORT).show();
}
}
});
}
private void initViews() {
homeFragmentViewModel = new ViewModelProvider(this).get(HomeFragmentViewModel.class);
cartViewModel = new ViewModelProvider(this).get(CartViewModel.class);
sliderView = view.findViewById(R.id.imageSlider);
imageSliderDeals = view.findViewById(R.id.imageSliderDeals);
recyclerView = view.findViewById(R.id.recyclerView);
recylerTimeDeal = view.findViewById(R.id.recy_timeDeal);
totalPointsTextView = view.findViewById(R.id.pointsTextView);
totalPrice = view.findViewById(R.id.totalPrice);
pointsViewModel = new ViewModelProvider(this).get(PointsViewModel.class);
sharedPreferences = getActivity().getSharedPreferences(Constants.LOGIN_PREFERENCE,
Context.MODE_PRIVATE);
int userId = sharedPreferences.getInt(Constants.USER_ID, 0);
listTitleRecycler.add(0, "Top Selling");
listTitleRecycler.add(1, "Latest Products");
listTitleRecycler.add(2, "All Products");
homeDataModel.setTitleList(listTitleRecycler);
recyclerView.setLayoutManager(new LinearLayoutManager(getActivity(),
LinearLayoutManager.VERTICAL, false));
recyclerView.setHasFixedSize(true);
progressDialog = new ProgressDialog(getContext(), R.style.exitDialogTheme);
progressDialog.setIndeterminate(true);
progressDialog.setMessage("Please wait...");
progressDialog.setCancelable(false);
progressDialog.setCanceledOnTouchOutside(false);
getPoints(userId);
}
private void initListeners() {
addLoungeToList();
DealsSliderAdapter adapter = new DealsSliderAdapter(getContext(), loungeList);
imageSliderDeals.setSliderAdapter(adapter);
imageSliderDeals.setSliderTransformAnimation(SliderAnimations.SIMPLETRANSFORMATION);
imageSliderDeals.setAutoCycleDirection(SliderView.AUTO_CYCLE_DIRECTION_BACK_AND_FORTH);
imageSliderDeals.setScrollTimeInSec(4); //set scroll delay in seconds :
imageSliderDeals.startAutoCycle();
}
public void addLoungeToList() {
int i = 0;
for (String name : imgNamesLounge) {
ImagesListDM imagesListDM = new ImagesListDM();
imagesListDM.setImg(imgResLounge[i]);
imagesListDM.setNameImg(name);
loungeList.add(imagesListDM);
i++;
}
}
}
畅销适配器
package colon.semi.com.dealMall.adapters;
import android.content.Context;
import android.content.Intent;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.TextView;
import android.widget.Toast;
import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;
import com.bumptech.glide.Glide;
import com.bumptech.glide.Priority;
import com.bumptech.glide.load.engine.DiskCacheStrategy;
import com.bumptech.glide.request.RequestOptions;
import java.util.ArrayList;
import java.util.List;
import colon.semi.com.dealMall.R;
import colon.semi.com.dealMall.Utils.Constants;
import colon.semi.com.dealMall.dataModels.CartDataTable;
import colon.semi.com.dealMall.dataModels.Product;
import colon.semi.com.dealMall.uiActivities.ProductDetailActivity;
public class
TopSellingAdapter extends RecyclerView.Adapter<TopSellingAdapter.SingleItemRowHolder> {
private static OnItemClickListener mlistener; //just a variable
private ArrayList<Product> topSellingList;
private Context context;
private List<CartDataTable> cartDataTables;
int[] quantity;int[] pid;
int size;
public TopSellingAdapter(ArrayList<Product> topSellingList, List<CartDataTable> cartDataTableList, Context context) {
this.topSellingList = topSellingList;
this.cartDataTables = cartDataTableList;
this.context = context;
}
@Override
public void onBindViewHolder(@NonNull SingleItemRowHolder holder, final int position) {
SingleItemRowHolder viewHolder = (SingleItemRowHolder) holder;
Product product = topSellingList.get(position);
RequestOptions options = new RequestOptions()
.centerInside()
.diskCacheStrategy(DiskCacheStrategy.AUTOMATIC)
.skipMemoryCache(true)
.priority(Priority.HIGH);
Glide
.with(context)
.load(topSellingList.get(position).getImage_name())
.apply(options)
.into(viewHolder.image);
viewHolder.name.setText(topSellingList.get(position).getProduct_title());
viewHolder.price.setText(topSellingList.get(position).getPrice());
viewHolder.linear_label.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent intent = new Intent(context, ProductDetailActivity.class);
intent.putExtra(Constants.PRODUCT_OBJECT, product);
context.startActivity(intent);
}
});
holder.addtocart.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if(mlistener!=null && position != RecyclerView.NO_POSITION){
viewHolder.addtocart.setVisibility(View.GONE);
viewHolder.cartLayout.setVisibility(View.VISIBLE);
viewHolder.quanTv.setText("1");
mlistener.onAddtoCartClick(v, topSellingList.get(position));
}
}
});
if (cartDataTables != null && cartDataTables.size() > 0) {
for (int i = 0; i < cartDataTables.size(); i++) {
if (cartDataTables.get(i).getProductId() == product.getProduct_id()) {
viewHolder.addtocart.setVisibility(View.GONE);
viewHolder.cartLayout.setVisibility(View.VISIBLE);
viewHolder.quanTv.setText(String.valueOf(cartDataTables.get(i).getProductQuantity()));
}
}
size = cartDataTables.size();
quantity = new int[size];
pid = new int[size];
}
// if (cartDataTables != null && cartDataTables.size() > 0) {
// int size = cartDataTables.size();
// int[] quantity = new int[size];
// int[] pid = new int[size];
Log.d("CartDataSize", String.valueOf(size));
for (int i = 0; i < size; i++) {
quantity[i] = cartDataTables.get(i).getProductQuantity();
pid[i] = cartDataTables.get(i).getProductId();
Log.d("CartData1", quantity[i] + " " + pid[i]);
}
holder.addProdButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
for (int i = 0; i < size; i++) {
quantity[i]++;
viewHolder.quanTv.setText(String.valueOf(quantity[i]));
}
// int id = pid[size - 1];
//int q1 = quantity[size - 1];
// Log.d("q1", String.valueOf(q1));
for (int i = 0; i < size; i++) {
if (cartDataTables.get(i).getProductId() == product.getProduct_id()) {
// q1 = q1 + 1;
//Log.d("q2", String.valueOf(q1));
//Toast.makeText(context, String.valueOf(q1), Toast.LENGTH_SHORT).show();
mlistener.updateCartData(pid[i], quantity[i], holder.getAdapterPosition(), v);
}
else {
mlistener.updateCartData(pid[i], quantity[i], holder.getAdapterPosition(), v);
}
}
}
});
holder.minusProdButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
for (int i = 0; i < size; i++) {
if (quantity[i] < 1) {
holder.cartLayout.setVisibility(View.GONE);
holder.addtocart.setVisibility(View.VISIBLE);
} else {
quantity[i]--;
if (quantity[i] < 1) {
holder.cartLayout.setVisibility(View.GONE);
holder.addtocart.setVisibility(View.VISIBLE);
}
viewHolder.quanTv.setText(String.valueOf(quantity[i]));
}
}
Toast.makeText(context, "Already added", Toast.LENGTH_SHORT).show();
for (int i = 0; i < size; i++) {
if (cartDataTables.get(i).getProductId() == product.getProduct_id()) {
mlistener.updateCartData(pid[i], quantity[i], holder.getAdapterPosition(),
v);
}
else {
mlistener.updateCartData(pid[i], quantity[i], holder.getAdapterPosition(), v);
}
}
}
});
}
@NonNull
@Override
public SingleItemRowHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {
View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.temp_top_selling_products, viewGroup, false);
SingleItemRowHolder categoriesListVH = new SingleItemRowHolder(view);
return categoriesListVH;
}
@Override
public int getItemCount() {
return (null != topSellingList ? topSellingList.size() : 0);
}
public void setOnItemClickListener(OnItemClickListener listener) {
this.mlistener = listener;
}
public interface OnItemClickListener {
void onAddtoCartClick(View view, Product product);
void updateCartData(int productId, int quantity, int position, View view);
}
public class SingleItemRowHolder extends RecyclerView.ViewHolder {
ImageView image;
TextView name;
TextView price;
LinearLayout linear_label;
Button addtocart;
Button addProdButton;
Button minusProdButton;
TextView quanTv;
RelativeLayout cartLayout;
public SingleItemRowHolder(View view) {
super(view);
image = view.findViewById(R.id.image);
name = view.findViewById(R.id.name);
price = view.findViewById(R.id.price);
linear_label = view.findViewById(R.id.linear_label);
addtocart = view.findViewById(R.id.addToCartButtonHome);
cartLayout = view.findViewById(R.id.rel_prodCart_home);
addProdButton = view.findViewById(R.id.prodAddButtonHome);
quanTv = view.findViewById(R.id.productQuanTextViewHome);
minusProdButton = view.findViewById(R.id.prodMinusButtonHome);
}
}
}
第一次调用适配器构造函数时，cartDataTables 列表中没有数据，并且由于我的条件 if (cartDataTables != null && cartDataTables.size() > 0)，当我单击“添加到购物车”按钮时，它们在 cartDataTables 列表中没有发现数据，因为我没有调用 notifyDataSetChanged() 方法或再次调用适配器构造函数，并且我的 addtocart 点击监听器在这种情况下 if (cartDataTables != null && cartDataTables.size() > 0)这就是为什么添加到购物车按钮点击监听器不起作用的原因。
解决方法：再次调用适配器构造函数。