Question

需要帮助。我知道如何填充List。但不知道如何使用retrofit + recyclerView使其工作。我需要用图像填充回收者视图。图像必须有改进的帮助，从json中提取链接后，必须将它们放在图像视图中。

我的适配器

public class ListAdapter extends RecyclerView.Adapter<ListAdapter.ListViewHolder> {

/**
 * General
 */
private List<ResultsPojo> resultList;
private LayoutInflater layoutInflater;

/**
 * Garbage
 */
private ItemClickListener mClickListener;


public ListAdapter(List<ResultsPojo> resultList, Context context) {
    this.resultList = resultList;
    this.layoutInflater = LayoutInflater.from(context);
}

@NonNull
@Override
public ListViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
    View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_banner, parent, false);
    return new ListViewHolder(view);
}

@Override
public void onBindViewHolder(@NonNull ListViewHolder holder, int position) {
Context context = holder.mImageBanner.getContext();
ResultsPojo item = resultList.get(position);
Log.d("tag", "on bind view item " + item.toString());
Picasso.get().load(item.getPosterPath()).into(holder.mImageBanner);
}

@Override
public int getItemCount() {
    return resultList.size();
}


public class ListViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
    ImageView mImageBanner;

    public ListViewHolder(View itemView) {
        super(itemView);
        mImageBanner = (ImageView) itemView.findViewById(R.id.item_banner_image);
        itemView.setOnClickListener(this);
    }

我的模特

public class BasePojo {
@SerializedName("page")
@Expose
private int page;
@SerializedName("total_results")
@Expose
private int totalResults;
@SerializedName("total_pages")
@Expose
private int totalPages;
@SerializedName("results")
@Expose
private ArrayList<ResultsPojo> results;

public BasePojo(ArrayList<ResultsPojo> results, int page){
    this.results = results;
    this.page = page;
}

public int getPage() {
    return page;
}

public void setPage(int page) {
    this.page = page;
}

public int getTotalResults() {
    return totalResults;
}

public void setTotalResults(int totalResults) {
    this.totalResults = totalResults;
}

public int getTotalPages() {
    return totalPages;
}

public void setTotalPages(int totalPages) {
    this.totalPages = totalPages;
}

public ArrayList<ResultsPojo> getResults() {
    return results;
}

public void setResults(ArrayList<ResultsPojo> results) {
    this.results = results;
}

}

另一个模型，因为里面有一个列表和列表

public class ResultsPojo {

@SerializedName("vote_count")
@Expose
private int voteCount;
@SerializedName("id")
@Expose
private int id;
@SerializedName("video")
@Expose
private boolean video;
@SerializedName("vote_average")
@Expose
private double voteAverage;
@SerializedName("title")
@Expose
private String title;
@SerializedName("popularity")
@Expose
private double popularity;
@SerializedName("poster_path")
@Expose
private String posterPath;
@SerializedName("original_language")
@Expose
private String originalLanguage;
@SerializedName("original_title")
@Expose
private String originalTitle;
@SerializedName("genre_ids")
@Expose
private List<Integer> genreIds = null;
@SerializedName("backdrop_path")
@Expose
private String backdropPath;
@SerializedName("adult")
@Expose
private boolean adult;
@SerializedName("overview")
@Expose
private String overview;
@SerializedName("release_date")
@Expose
private String releaseDate;

public int getVoteCount() {
    return voteCount;
}

public void setVoteCount(int voteCount) {
    this.voteCount = voteCount;
}

public int getId() {
    return id;
}

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

public boolean isVideo() {
    return video;
}

public void setVideo(boolean video) {
    this.video = video;
}

public double getVoteAverage() {
    return voteAverage;
}

public void setVoteAverage(double voteAverage) {
    this.voteAverage = voteAverage;
}

public String getTitle() {
    return title;
}

public void setTitle(String title) {
    this.title = title;
}

public double getPopularity() {
    return popularity;
}

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

public String getPosterPath() {
    return posterPath;
}

public void setPosterPath(String posterPath) {
    this.posterPath = posterPath;
}

public String getOriginalLanguage() {
    return originalLanguage;
}

public void setOriginalLanguage(String originalLanguage) {
    this.originalLanguage = originalLanguage;
}

public String getOriginalTitle() {
    return originalTitle;
}

public void setOriginalTitle(String originalTitle) {
    this.originalTitle = originalTitle;
}

public List<Integer> getGenreIds() {
    return genreIds;
}

public void setGenreIds(List<Integer> genreIds) {
    this.genreIds = genreIds;
}

public String getBackdropPath() {
    return backdropPath;
}

public void setBackdropPath(String backdropPath) {
    this.backdropPath = backdropPath;
}

public boolean isAdult() {
    return adult;
}

public void setAdult(boolean adult) {
    this.adult = adult;
}

public String getOverview() {
    return overview;
}

public void setOverview(String overview) {
    this.overview = overview;
}

public String getReleaseDate() {
    return releaseDate;
}

public void setReleaseDate(String releaseDate) {
    this.releaseDate = releaseDate;
}

}

我的改装客户

public class RetrofitClient {
/**
 * URLS
 **/
private static final String BASE_URL = "http://api.themoviedb.org/";

/**
 * Retrofit instance
 **/
private static Retrofit getRetrofitInstance(){
    return new Retrofit.Builder()
            .addConverterFactory(GsonConverterFactory.create())

// .addCallAdapterFactory（RxJava2CallAdapterFactory.create（）） .baseUrl（BASE_URL）。建立（）; }

/**
 * Api Service
 **/
public static ApiService getApiService(){
    return getRetrofitInstance().create(ApiService.class);
}

}

Api服务

public interface ApiService {
@GET("3/movie/popular")
Call<BasePojo> getPhotosList(@Query("api_key") String key);

}

和我的片段

  RecyclerView recyclerView;
View view;
private ArrayList<ResultsPojo> resultsList;
private ListAdapter adapter;


public ListFragment() {
    // Required empty public constructor
}


@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {

    /**
     * Main Initialization
     */
    resultsList = new ArrayList<>();
    view = inflater.inflate(R.layout.fragment_list, container, false);
    recyclerView = (RecyclerView) view.findViewById(R.id.recycler_list_detailed);
    recyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
    //adapter.setClickListener(this);

    ApiService api = RetrofitClient.getApiService();
    Call<BasePojo> call = api.getPhotosList(getString(R.string.api_key));
    call.enqueue(new Callback<BasePojo>() {
        @Override
        public void onResponse(Call<BasePojo> call, Response<BasePojo> response) {
            Log.d("tag", "inside on response");
            resultsList = response.body().getResults();
            adapter = new ListAdapter(resultsList,getContext());
            recyclerView.setAdapter(adapter);

        }

        @Override
        public void onFailure(Call<BasePojo> call, Throwable t) {
            Log.d("tag", "inside failure");

        }
    });

    return view;
}

Answer 1

我认为你没有给我们一个明确的错误或问题，但我会在改造之前说出我做错了什么。

1-不要忘记在Manifest中添加 INTERNET 权限

2- 如果您的回复是列表，则应定义 Call<YourModelHere>代替

Picasso.with(context).load(item.get(position).getPosterPath).into(holder.mImageBanner);

在接口和你打电话的地方

。

3-如果您不了解，请学习在调试模式下工作。所以，基本上你可以理解你正在检索哪些回复或者你没有回答哪些回复。

4-除此之外，我总是像这样使用 Picasso＆amp; Retrofit ; （但我确定你在这里错了，因为你应该找回位置而且你可以获得所有海报，你做的风格只能得到一个或没有）< / EM>

{{1}}

（在全局中定义上下文上下文）

如何通过改造获得图像链接并放入毕加索

1 个答案: