在这里我很痛苦，因此对于RecyclerView中创建的每个元素，我都会在内部创建一个Chip元素列表。您知道的，我做到了，但是现在每次RecyclerView滚动时，我都会折磨我的服务器。如何做到这一点，以免每次滚动时都拍摄服务器？在我的情况下，当我调用productRepository getToastFromProduct方法时发生服务器调用
package com.example.myapplication.Adapters;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.drawable.Drawable;
import android.net.Uri;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import com.bumptech.glide.Glide;
import com.bumptech.glide.request.RequestOptions;
import com.bumptech.glide.request.target.SimpleTarget;
import com.bumptech.glide.request.transition.Transition;
import com.example.myapplication.Application.CloudLiquid;
import com.example.myapplication.DataModel.ChipModel;
import com.example.myapplication.DataModel.ProductLayout.Information;
import com.example.myapplication.DataModel.ProductLayout.Product;
import com.example.myapplication.Managers.UuidManager;
import com.example.myapplication.R;
import com.example.myapplication.Retrofit.ProductRepository;
import com.example.myapplication.Retrofit.RatingRepository;
import com.example.myapplication.Retrofit.RetrofitBase;
import com.google.android.material.card.MaterialCardView;
import com.google.android.material.chip.Chip;
import com.google.android.material.chip.ChipGroup;
import com.google.android.material.internal.FlowLayout;
import com.xiaofeng.flowlayoutmanager.FlowLayoutManager;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.appcompat.widget.AppCompatImageView;
import androidx.appcompat.widget.AppCompatTextView;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import co.lujun.androidtagview.TagContainerLayout;
import co.lujun.androidtagview.TagView;
import io.reactivex.android.schedulers.AndroidSchedulers;
import io.reactivex.disposables.CompositeDisposable;
import io.reactivex.functions.Consumer;
import io.reactivex.schedulers.Schedulers;
public class ProductAdapter extends RecyclerView.Adapter<ProductAdapter.Holder> {
private List<com.example.myapplication.DataModel.ProductLayout.Product> products;
private List<com.example.myapplication.DataModel.ProductLayout.Product> filteredList;
private Context context;
private RatingRepository rating;
private CloudLiquid application;
private CompositeDisposable compositeDisposable = new CompositeDisposable();
private ProductRepository productRepository;
public ProductAdapter(List<com.example.myapplication.DataModel.ProductLayout.Product> products, Context context) {
this.products = products;
this.context = context;
this.filteredList = products;
this.rating = RetrofitBase.getRetrofit().create(RatingRepository.class);
this.application = (CloudLiquid) context;
this.productRepository = RetrofitBase.getRetrofit().create(ProductRepository.class);
}
@NonNull
@Override
public Holder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.itempreview, parent, false);
return new Holder(view);
}
@Override
public void onBindViewHolder(@NonNull final Holder holder, final int position) {
Glide.with(context).
load(filteredList.get(position).getImage()).
apply(new RequestOptions().override(512, 512)).
into(holder.image);
holder.product.setText(String.valueOf(filteredList.get(position).getName()));
holder.company.setText(String.valueOf(filteredList.get(position).getManufacturer()));
holder.comment.setText(String.valueOf(filteredList.get(position).getCommentCnt()));
holder.like.setText(String.valueOf(filteredList.get(position).getLike()));
holder.dislike.setText(String.valueOf(filteredList.get(position).getDislike()));
compositeDisposable.add(productRepository.getToastFromProduct(String.valueOf(products.get(position).getId()))
.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread())
.subscribe(new Consumer<List<ChipModel>>() {
@Override
public void accept(List<ChipModel> chipModels) throws Exception {
holder.category.removeAllViews();
for (int i = 0; i < chipModels.size(); i++){
final Chip chip = new Chip(context);
chip.setChipBackgroundColor(context.getResources().getColorStateList(R.color.ms_black));
chip.setText(chipModels.get(i).getChipText());
chip.setTextColor(context.getResources().getColor(R.color.ms_white));
Glide.with(context)
.load(chipModels.get(i).getChipImage())
.into(new SimpleTarget<Drawable>() {
@Override
public void onResourceReady(@NonNull Drawable resource, @Nullable Transition<? super Drawable> transition) {
chip.setChipIcon(resource);
}
});
holder.category.addView(chip);
}
}
}, new Consumer<Throwable>() {
@Override
public void accept(Throwable throwable) throws Exception {
throwable.printStackTrace();
}
}));
holder.commentImage.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
CloudLiquid application = (CloudLiquid) context;
Bundle bundle = new Bundle();
bundle.putString("product_id", String.valueOf(filteredList.get(position).getId()));
application.showCommentFragmet(bundle);
}
});
holder.card.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
CloudLiquid application = (CloudLiquid) context;
Bundle bundle = new Bundle();
bundle.putString("id", String.valueOf(filteredList.get(position).getId()));
application.showItemProfile(bundle);
}
});
holder.likeimage.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
holder.compositeDisposable.add(rating.addRatingToProduct("Like", new UuidManager(context).getUuid(), String.valueOf(products.get(position).getId()))
.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread())
.subscribe(new Consumer<Product>() {
@Override
public void accept(Product product) throws Exception {
products.remove(position);
products.add(position, product);
notifyItemChanged(position);
}
}, new Consumer<Throwable>() {
@Override
public void accept(Throwable throwable) throws Exception {
throwable.printStackTrace();
}
}));
}
});
holder.dislikeimage.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
holder.compositeDisposable.add(rating.addRatingToProduct("Dislike", new UuidManager(context).getUuid(), String.valueOf(products.get(position).getId()))
.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread())
.subscribe(new Consumer<Product>() {
@Override
public void accept(Product product) throws Exception {
products.remove(position);
products.add(position, product);
notifyItemChanged(position);
}
}, new Consumer<Throwable>() {
@Override
public void accept(Throwable throwable) throws Exception {
throwable.printStackTrace();
}
}));
}
});
}
@Override
public int getItemCount() {
return filteredList.size();
}
@Override
public void onDetachedFromRecyclerView(@NonNull RecyclerView recyclerView) {
super.onDetachedFromRecyclerView(recyclerView);
}
class Holder extends RecyclerView.ViewHolder {
private AppCompatImageView image;
private AppCompatTextView product, company, like, dislike, comment;
private AppCompatImageView commentImage, dislikeimage, likeimage;
private ChipGroup category;
private MaterialCardView card;
private CompositeDisposable compositeDisposable = new CompositeDisposable();
public Holder(@NonNull View itemView) {
super(itemView);
image = itemView.findViewById(R.id.appCompatImageView4);
commentImage = itemView.findViewById(R.id.appCompatImageView5);
product = itemView.findViewById(R.id.appCompatTextView6);
company = itemView.findViewById(R.id.appCompatTextView4);
like = itemView.findViewById(R.id.appCompatTextView5);
dislike = itemView.findViewById(R.id.appCompatTextView3);
comment = itemView.findViewById(R.id.appCompatTextView);
category = itemView.findViewById(R.id.parentlinear);
card = itemView.findViewById(R.id.itempreview);
dislikeimage = itemView.findViewById(R.id.appCompatImageView6);
likeimage = itemView.findViewById(R.id.appCompatImageView7);
}
@Override
public String toString() {
return super.toString();
}
}
}