Java 我的视图在我的RecyclerView中不可见

在am应用程序中，我从服务器获取数据，但当我运行程序时，我没有收到任何错误，也没有在屏幕上看到任何内容。所以我的回收视图基本上是空白的。我不知道怎么了。 主要活动类别：

public class MainActivity extends AppCompatActivity implements RecyclerView.OnClickListener {
    RecyclerView recyclerView;
    List<BlogResponse> blogResponses;
    RetrofitAdapter retrofitAdapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        blogResponses = new ArrayList<>();
        recyclerView =(RecyclerView) findViewById(R.id.recyclerView);
        LinearLayoutManager linear = new LinearLayoutManager(this);
        recyclerView.setLayoutManager(linear);
        getBlogpost();

        recyclerView.setOnClickListener(this);
    }

    private void getBlogpost() {
        //final ProgressDialog loading = ProgressDialog.show(this, "Fetching Data for blog", " Please wait...", false, false);
        BlogaPI apiService = ApiClient.getClient().create(BlogaPI.class);
        Call<BlogList> call = apiService.getBlogpost();
        call.enqueue(new Callback<BlogList>() {
            @Override
            public void onResponse(Call<BlogList> call, Response<BlogList> response) {
               // loading.dismiss();
                if (response.isSuccessful()){
                    blogResponses = response.body().getBlogResponses();
                    retrofitAdapter = new RetrofitAdapter(blogResponses,getApplicationContext());
                    recyclerView.setAdapter(retrofitAdapter);
                } else {
                    Toast.makeText(MainActivity.this, "Something is wrong", Toast.LENGTH_SHORT).show();
                }
            }

            @Override
            public void onFailure(Call<BlogList> call, Throwable t) {
            //    loading.dismiss();
                Log.e("MainActivity:", t.toString());

            }
        });/*
        Call<List<BlogResponse>> call = apiService.getBlogpost();
        call.enqueue(new Callback<List<BlogResponse>>() {
            @Override
            public void onResponse(Call<List<BlogResponse>> call, Response<List<BlogResponse>> response) {
                List<BlogResponse> blogresp = response.body();
                recyclerView.setAdapter(new RetrofitAdapter(blogresp,R.layout.custom_view,getApplicationContext(),
                        new RetrofitAdapter.ItemListener(){

                            @Override
                            public void onPostClick(String blogId) {
                                Toast.makeText(getApplicationContext(), "Post ID is " + blogId, Toast.LENGTH_SHORT).show();
                            }
                        }));
            }

            @Override
            public void onFailure(Call<List<BlogResponse>> call, Throwable t) {
                Log.e("MainActivity:", t.toString());
            }
        });*/
    }

    @Override
    public void onClick(View view) {

    }
}

ApiClient：

 public class ApiClient {
    private static final String STAGING_BASE_URL = "https://watchnollywood.ml/api/";
    private  static Retrofit retrofit = null;

    public static Retrofit getClient(){
      if (retrofit == null){
        retrofit = new Retrofit.Builder()
               .baseUrl(STAGING_BASE_URL)
               .addConverterFactory(GsonConverterFactory.create())
               .build();
   }
    return retrofit;
}
}

---

请帮忙。谢谢

在使用

RecyclerView.Adapter

时需要注意的基本问题，您遇到了上述问题

我的视图在我的RecyclerView中不可见

确保数据正确传递
尝试将数据集大小打印到

getItemCount（）

方法中

确保

row\u项目

height设置为

wrap\u content

（初学者常犯的错误）

确保使用

add（）

或

addAll（）

将项目添加到

数据集中，而不是直接分配引用

---

能否验证传递给适配器的列表中是否包含数据？这会让您知道这是JSON解析问题还是适配器问题。您是否从这个

Log.i（“RefughtAdapter”、“onBindViewHolder:+position”）中得到任何打印信息？当我记录getItemCount（）时，请上载回收器和活动的布局，结果为=0。我没有看到什么可以使它不能从服务器上拉。请提供任何其他建议不知何故，从服务器返回的
JSON
未按需要进行解析。再检查一遍。
 public interface BlogaPI {
  @GET("blog")
  Call<BlogList> getBlogpost();
}

public class BlogList  {
    @SerializedName("blog")
    @Expose
    private ArrayList<BlogResponse> blogResponses = new ArrayList<>();
}

import com.google.gson.annotations.Expose;
import com.google.gson.annotations.SerializedName;

public class BlogResponse {

    @SerializedName("blog_id")
    @Expose
    private String blogId;
    @SerializedName("blog_title")
    @Expose
    private String blogTitle;
    @SerializedName("blog_subtitle")
    @Expose
    private String blogSubtitle;
    @SerializedName("blog_excerpt")
    @Expose
    private String blogExcerpt;
    @SerializedName("blog_content")
    @Expose
    private String blogContent;
    @SerializedName("blog_thumbnail")
    @Expose
    private String blogThumbnail;
    @SerializedName("blog_medimg")
    @Expose
    private String blogMedimg;
    @SerializedName("category_title")
    @Expose
    private String categoryTitle;
    public  BlogResponse(String blogId, String blogTitle, String blogSubtitle, String blogExcerpt,String blogContent, String blogThumbnail, String blogMedimg){
        this.blogId = blogId;
        this.blogTitle = blogTitle;
        this.blogSubtitle = blogSubtitle;
        this.blogExcerpt = blogExcerpt;
        this.blogContent = blogContent;
        this.blogThumbnail = blogThumbnail;
        this.blogMedimg = blogMedimg;
    }

    public String getBlogId() {
        return blogId;
    }

    public void setBlogId(String blogId) {
        this.blogId = blogId;
    }

    public String getBlogTitle() {
        return blogTitle;
    }

    public void setBlogTitle(String blogTitle) {
        this.blogTitle = blogTitle;
    }

    public String getBlogSubtitle() {
        return blogSubtitle;
    }

    public void setBlogSubtitle(String blogSubtitle) {
        this.blogSubtitle = blogSubtitle;
    }

    public String getBlogExcerpt() {
        return blogExcerpt;
    }

    public void setBlogExcerpt(String blogExcerpt) {
        this.blogExcerpt = blogExcerpt;
    }

    public String getBlogContent() {
        return blogContent;
    }

    public void setBlogContent(String blogContent) {
        this.blogContent = blogContent;
    }

    public String getBlogThumbnail() {
        return blogThumbnail;
    }

    public void setBlogThumbnail(String blogThumbnail) {
        this.blogThumbnail = blogThumbnail;
    }

    public String getBlogMedimg() {
        return blogMedimg;
    }

    public void setBlogMedimg(String blogMedimg) {
        this.blogMedimg = blogMedimg;
    }

    public String getCategoryTitle() {
        return categoryTitle;
    }

    public void setCategoryTitle(String categoryTitle) {
        this.categoryTitle = categoryTitle;
    }
}

 public class ApiClient {
    private static final String STAGING_BASE_URL = "https://watchnollywood.ml/api/";
    private  static Retrofit retrofit = null;

    public static Retrofit getClient(){
      if (retrofit == null){
        retrofit = new Retrofit.Builder()
               .baseUrl(STAGING_BASE_URL)
               .addConverterFactory(GsonConverterFactory.create())
               .build();
   }
    return retrofit;
}
}