Question

我正在使用一个库来轻松从newsapi.org获取一些新闻

implementation 'com.github.KwabenBerko:News-API-Java:1.0.0'

图书馆工作了一次，实际上我是第一次加载新闻……从那以后再也没有。这不是互联网问题，因为我的应用程序可以在线运行，其他一切都可以正常运行。所以我的问题是我怎么能找到问题所在？在logcat中，我收到了用于recycleview适配器的消息，导致其为空（没有数据分发），因此此消息无济于事。我正在使用的代码：

private void setupNews() {
        if(newsArticles.size() != 50) {
            NewsApiClient newsApiClient = new NewsApiClient(getString(R.string.feednews_api_key));

            newsApiClient.getEverything(
                    new EverythingRequest.Builder()
                            .q("Fitness")
                            .pageSize(50)
                            .language("en")
                            .build(),
                    new NewsApiClient.ArticlesResponseCallback() {

                        @Override
                        public void onSuccess(ArticleResponse articleResponse) {

                            for (int i = 0; i < 50; i++) {
                                newsArticles.add(new NewsArticle(articleResponse.getArticles().get(i).getTitle(),
                                        articleResponse.getArticles().get(i).getDescription(),
                                        articleResponse.getArticles().get(i).getPublishedAt(),
                                        articleResponse.getArticles().get(i).getSource().getName(),
                                        articleResponse.getArticles().get(i).getUrlToImage(),
                                        articleResponse.getArticles().get(i).getUrl()));
                            }

                            RecyclerView newsRecycler = findViewById(R.id.news_articles_list);
                            Log.d(TAG, "setup: " + newsArticles.size());
                            ViewCompat.setNestedScrollingEnabled(newsRecycler, false);

                            newsRecycler.setHasFixedSize(true);
                            RecyclerView.LayoutManager layoutManager = new LinearLayoutManager(getApplicationContext());
                            RecyclerView.Adapter adapter = new NewsAdapter(newsArticles, getApplicationContext());
                            newsRecycler.setLayoutManager(layoutManager);
                            newsRecycler.setAdapter(adapter);
                            mProgressBar.setVisibility(View.GONE);

                        }

                        @Override
                        public void onFailure(Throwable throwable) {
                            Log.d(TAG, "onFailure: " + throwable);
                            System.out.println(throwable.getMessage());
                            mProgressBar.setVisibility(View.GONE);
                            mCheckNewsRecieved.setVisibility(View.VISIBLE);

                        }

                    }
            );

我检查了2个不同的钥匙，因此大概没有钥匙问题。我检查了Recycleview适配器和Viewholder中的所有内容。我阅读了所有在logcat中遇到的E/RecyclerView: No adapter attached; skipping layout错误的帖子，因此我几乎确信我没有从newsapi.org获取数据。因此，当我思路ideas尽时，我的问题是如何调试此类问题？

更新：我发布了recycleview适配器，以防万一

public class NewsAdapter extends RecyclerView.Adapter<NewsAdapter.ViewHolder> {

    private final ArrayList<NewsArticle> mNewsArticle;
    private final Context mContext;

    public NewsAdapter(ArrayList<NewsArticle> mNewsArticle, Context mContext) {
        this.mNewsArticle = mNewsArticle;
        this.mContext = mContext;
    }

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

    @Override
    public void onBindViewHolder(NewsAdapter.ViewHolder holder, int position) {
        holder.articleDesc.setText(mNewsArticle.get(position).getArticleDesc());
        holder.articleName.setText(mNewsArticle.get(position).getArticleName());
        holder.articleURL.setText(mNewsArticle.get(position).getArticleURLName());
        holder.articleDate.setText(dateConfiguration(mNewsArticle.get(position).getArticleDate()));

        Log.d(TAG, "onBindViewHolder: " + mNewsArticle.get(position).getArticleURLName());

        Picasso
                .with(mContext)
                .load(mNewsArticle.get(position).getArticleImageURL())
                .resize(380, 200)
                .into(holder.articleImage);

        holder.itemView.setOnClickListener(v -> IntentUtils.invokeToURL(mContext, mNewsArticle.get(position).getArticleURLLink()));
    }

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

    public class ViewHolder extends RecyclerView.ViewHolder {

        private TextView articleName;
        private TextView articleDesc;
        private TextView articleURL;
        private ImageView articleImage;
        private TextView articleDate;

        public ViewHolder(View itemView) {

            super(itemView);

            articleName = itemView.findViewById(R.id.article_title);
            articleDesc = itemView.findViewById(R.id.article_desc);
            articleImage = itemView.findViewById(R.id.article_image);
            articleURL = itemView.findViewById(R.id.article_url);
            articleDate = itemView.findViewById(R.id.article_date);
        }
    }

    public String dateConfiguration(String Date) {

        return Date.replace("T", " ").replace("Z", "");
    }

更新：检查了newsapi.org之后，它收到了我的请求。奇怪的是，在模拟器中曾经工作过一次，但是现在即使我擦除数据，使缓存无效等，文章仍在加载（旧的）。在物理设备中，我收到了mCheckNewsRecieved.setVisibility(View.VISIBLE);消息，就像失败了。

无法使用库从newsapi.org获取数据。帮助调试

0 个答案: