Java 未使用改装从IGDB Api接收所有数据

我正在使用IGDB Api构建一个应用程序，以获取要在应用程序中显示的游戏列表。我也在使用改装库。目前，我正试图在GridView中显示游戏封面，但由于某些原因，当我调用封面URL和除“id”之外的其他数据时，我从Api中得到null。有人能帮我找出我为什么变空吗？提前谢谢

编辑：我认为从IGDB获取数据可能会有问题。当我在

Call Call=service.getAllGames（FIELDS）中设置一个空字符串时，我意识到了这一点我得到了相同的结果，其中我只得到了ID。但我不知道为什么：/

Game.java：

import java.util.List;
import com.google.gson.annotations.Expose;
import com.google.gson.annotations.SerializedName;

public class Game {

    @SerializedName("id")
    @Expose
    private Integer id;
    @SerializedName("cover")
    @Expose
    private Cover cover;
    @SerializedName("name")
    @Expose
    private String name;
    @SerializedName("popularity")
    @Expose
    private Double popularity;
    @SerializedName("summary")
    @Expose
    private String summary;
    @SerializedName("genres")
    @Expose
    private List<Genre> genres = null;
    @SerializedName("platforms")
    @Expose
    private List<Platform> platforms = null;
    @SerializedName("rating")
    @Expose
    private Double rating;
    @SerializedName("release_dates")
    @Expose
    private List<ReleaseDate> releaseDates = null;
    @SerializedName("videos")
    @Expose
    private List<Video> videos = null;

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public Cover getCover() {
        return cover;
    }

    public void setCover(Cover cover) {
        this.cover = cover;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Double getPopularity() {
        return popularity;
    }

    public void setPopularity(Double popularity) {
        this.popularity = popularity;
    }

    public String getSummary() {
        return summary;
    }

    public void setSummary(String summary) {
        this.summary = summary;
    }

    public List<Genre> getGenres() {
        return genres;
    }

    public void setGenres(List<Genre> genres) {
        this.genres = genres;
    }

    public List<Platform> getPlatforms() {
        return platforms;
    }

    public void setPlatforms(List<Platform> platforms) {
        this.platforms = platforms;
    }

    public Double getRating() {
        return rating;
    }

    public void setRating(Double rating) {
        this.rating = rating;
    }

    public List<ReleaseDate> getReleaseDates() {
        return releaseDates;
    }

    public void setReleaseDates(List<ReleaseDate> releaseDates) {
        this.releaseDates = releaseDates;
    }

    public List<Video> getVideos() {
        return videos;
    }

    public void setVideos(List<Video> videos) {
        this.videos = videos;
    }

}

GameAdapter.java

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;

import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;

import com.riceplant.capstoneproject.R;
import com.riceplant.capstoneproject.data.Game;
import com.squareup.picasso.Picasso;

import java.util.ArrayList;

public class GameAdapter extends RecyclerView.Adapter<GameAdapter.GameAdapterViewHolder> {

    private ArrayList<Game> mGameData;
    private Context mContext;

    public GameAdapter(Context context, ArrayList<Game> gameData) {
        mContext = context;
        mGameData = gameData;
    }

    public class GameAdapterViewHolder extends RecyclerView.ViewHolder {
        ImageView mGameCover;

        public GameAdapterViewHolder(@NonNull View itemView) {
            super(itemView);
            mGameCover = itemView.findViewById(R.id.game_cover_image);
        }
    }

    @NonNull
    @Override
    public GameAdapterViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        Context context = parent.getContext();
        int layoutIdForListItem = R.layout.game_list_item;
        LayoutInflater layoutInflater = LayoutInflater.from(context);

        View view = layoutInflater.inflate(layoutIdForListItem, parent, false);
        return new GameAdapterViewHolder(view);
    }

    @Override
    public void onBindViewHolder(@NonNull GameAdapterViewHolder holder, int position) {
        Cover cover = mGameData.get(position).getCover();
    String currentGame = null;
    if (cover != null)
        currentGame = cover.getUrl();
    Picasso.get()
            .load(currentGame)
            .placeholder(R.drawable.image_loading)
            .error(R.drawable.image_not_found)
            .into(holder.mGameCover);
    }
    @Override
    public int getItemCount() {
        if (mGameData == null) {
            return 0;
        }
        return mGameData.size();
    }

}

GetDataService

import com.riceplant.capstoneproject.data.Game;

import java.util.ArrayList;

import retrofit2.Call;
import retrofit2.http.Body;
import retrofit2.http.Headers;
import retrofit2.http.POST;

public interface GetDataService {

    @Headers("user-key: GET YOU DATA KEY FROM IGDB")
    @POST("games")
    Call<ArrayList<Game>> getAllGames(@Body String fields);
}

import com.riceplant.capstoneproject.data.Game；
导入java.util.ArrayList；
2.电话;；
导入文件2.http.Body；
导入2.http.Headers；
导入文件2.http.POST；
公共接口GetDataService{
@标题（“用户密钥：从IGDB获取数据密钥”）
@后（“游戏”）
调用getAllGames（@Body字符串字段）；
}
您缺少
GetDataService
上的
字段
body-参数

文档（）指出，您应该始终将字段放在字段正文中，以筛选要显示的字段

我建议首先使用Postman或curl来纠正REST请求：首先使用工具生成请求，以便响应符合您的期望，然后才开始创建实际的应用程序实现

因此，步骤是：使用/games端点请求所有游戏，并将所有字段指定为POST请求的主体。一旦您获得了封面的id，请求/封面并过滤您实际想要显示的封面，afaik

祝你好运。
嗨，我实际上是用邮递员来完成其余的请求的。我使用的字段是以下
字段名称、platforms.name、cover、cover.url、rating、release\u dates.human、genres.name、summary、popularity、time\u to\u beat、videos.name、videos.video\u id调用getAllGames（@Query（“fields”）字符串字段）
在PopularGamesFragment中，我将字符串字段更改为
public static final string FIELDS=“name，platforms.name，cover，cover.url，cover.image\u id，rating，release\u dates.human，genres.name，summary，popularity，time\u to\u beat，videos.name，videos.videos\u id；”非常感谢！
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import android.widget.Toast;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.fragment.app.Fragment;
import androidx.recyclerview.widget.GridLayoutManager;
import androidx.recyclerview.widget.RecyclerView;

import com.riceplant.capstoneproject.R;
import com.riceplant.capstoneproject.adapter.GameAdapter;
import com.riceplant.capstoneproject.data.Game;
import com.riceplant.capstoneproject.network.GameInstance;
import com.riceplant.capstoneproject.network.GetDataService;

import java.util.ArrayList;
import java.util.List;

import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.Response;

public class PopularGamesFragment extends Fragment {
    private RecyclerView mRecyclerView;
    private TextView mErrorTextMessage;

    private GameAdapter mGameAdapter;

    public static final String FIELDS = "fields name, platforms.name, cover.url, rating, release_dates.human, genres.name, summary, popularity, time_to_beat, videos.name, videos.video_id;";

    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.fragment_popular_games, container, false);

        GetDataService service = GameInstance.getGameInstance().create(GetDataService.class);
        Call<ArrayList<Game>> call = service.getAllGames(FIELDS);
        call.enqueue(new Callback<ArrayList<Game>>() {
            @Override
            public void onResponse(Call<ArrayList<Game>> call, Response<ArrayList<Game>> response) {
                mRecyclerView = view.findViewById(R.id.recycler_view);
                generateDataList(response.body());
            }

            @Override
            public void onFailure(Call<ArrayList<Game>> call, Throwable t) {
                mErrorTextMessage = view.findViewById(R.id.popular_games_error_message);
                mErrorTextMessage.setText("Something went wrong. Try again!");
            }
        });

        return view;
    }

    private void generateDataList(ArrayList<Game> gameList) {
        mGameAdapter = new GameAdapter(getActivity(), gameList);

        GridLayoutManager gridLayoutManager = new GridLayoutManager(getActivity(), 2);
        mRecyclerView.setLayoutManager(gridLayoutManager);
        mRecyclerView.setHasFixedSize(true);
        mRecyclerView.setAdapter(mGameAdapter);
    }

}

import retrofit2.Retrofit;
import retrofit2.converter.gson.GsonConverterFactory;

public class GameInstance {

    private static Retrofit retrofit;
    public static final String BASE_URL = "https://api-v3.igdb.com/";

    public static Retrofit getGameInstance() {
        if (retrofit == null) {
            retrofit = new retrofit2.Retrofit.Builder()
                    .baseUrl(BASE_URL)
                    .addConverterFactory(GsonConverterFactory.create())
                    .build();

        }
        return retrofit;
    }
}

import com.riceplant.capstoneproject.data.Game;

import java.util.ArrayList;

import retrofit2.Call;
import retrofit2.http.Body;
import retrofit2.http.Headers;
import retrofit2.http.POST;

public interface GetDataService {

    @Headers("user-key: GET YOU DATA KEY FROM IGDB")
    @POST("games")
    Call<ArrayList<Game>> getAllGames(@Body String fields);
}