我需要从该URL https://newsapi.org/v1/articles?apiKey=6946d0c07a1c4555a4186bfcade76398&sortBy=top&source=bbc-news解析数据,但是当我进行apicall操作时,它永远不会进入onResponse函数,但始终会进入onFailure。
始终会收到onFailure中的“错误”吐司。
我尝试将BASE_URL和Query更改为几个不同的选项,但这无济于事。也许这是我的物体有问题,但是我找不到错误。
*****更新*****:我像注释中所说的那样更改了我的对象,但是仍然获得onFailure函数。
MainActivity.java
public class MainActivity extends AppCompatActivity implements
OnItemClickListener{
public static final String EXTRA_TITLE="Title";
public static final String EXTRA_DESCRIPTION="Description";
public static final String EXTRA_URL="URL";
private RecyclerView recycler;
private RecyclerAdapter adapter;
private ArrayList<NewsCell> newsList;
private Call<List<NewsCell>> apiCall;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
newsList=new ArrayList<>();
setupRecycler();
setUpApiCall();
}
private void setUpApiCall(){
apiCall=NetworkUtils.getApiInterface().getNews(
"6946d0c07a1c4555a4186bfcade76398","top","bbc-news");
apiCall.enqueue(new Callback<List<NewsCell>>() {
@Override
public void onResponse(Call<List<NewsCell>> call,
Response<List<NewsCell>> response) {
if(response.isSuccessful() && response.body().size()!=0){
newsList.addAll(response.body());
adapter=new
RecyclerAdapter(MainActivity.this,newsList,MainActivity.this);
recycler.setAdapter(adapter);
}
else{
Toast.makeText(MainActivity.this, "No results",
Toast.LENGTH_SHORT).show();
}
}
@Override
public void onFailure(Call<List<NewsCell>> call, Throwable t) {
Toast.makeText(MainActivity.this, "Error",
Toast.LENGTH_SHORT).show();
}
});
}
private void setupRecycler() {
recycler=findViewById(R.id.recyclerView);
recycler.setLayoutManager(new LinearLayoutManager(this));
}
@Override
public void onItemClick(int position) {
Intent detailIntent=new Intent(this,NewsSingle.class);
NewsCell clickedItem=newsList.get(position);
detailIntent.putExtra(EXTRA_TITLE,clickedItem.getTitle());
detailIntent.putExtra(EXTRA_DESCRIPTION,clickedItem.getDescription());
detailIntent.putExtra(EXTRA_URL,clickedItem.getUrlToImage());
startActivity(detailIntent);
}
}
NetvorkUtils.java
public class NetworkUtils {
private static final String BASE_API="https://newsapi.org/v1/";
private static APIInterface apiInterface;
public static APIInterface getApiInterface(){
if(apiInterface==null){
Retrofit retrofit =new Retrofit.Builder()
.baseUrl(BASE_API)
.addConverterFactory(GsonConverterFactory.create())
.build();
apiInterface=retrofit.create(APIInterface.class);
}
return apiInterface;
}
}
APIInterface.java
public interface APIInterface {
@GET("articles")
Call<List<NewsCell>> getNews(@Query("apiKey") String key, @Query("sortBy")
String sort,@Query("source") String source);
}
Article.java
public class Article {
@SerializedName("author")
@Expose
private String author;
@SerializedName("title")
@Expose
private String title;
@SerializedName("description")
@Expose
private String description;
@SerializedName("url")
@Expose
private String url;
@SerializedName("urlToImage")
@Expose
private String urlToImage;
@SerializedName("publishedAt")
@Expose
private String publishedAt;
public String getAuthor() {
return author;
}
public void setAuthor(String author) {
this.author = author;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
public String getUrl() {
return url;
}
public void setUrl(String url) {
this.url = url;
}
public String getUrlToImage() {
return urlToImage;
}
public void setUrlToImage(String urlToImage) {
this.urlToImage = urlToImage;
}
public String getPublishedAt() {
return publishedAt;
}
public void setPublishedAt(String publishedAt) {
this.publishedAt = publishedAt;
}
}
NewsCell.java
public class NewsCell {
@SerializedName("status")
@Expose
private String status;
@SerializedName("source")
@Expose
private String source;
@SerializedName("sortBy")
@Expose
private String sortBy;
@SerializedName("articles")
@Expose
private List<Article> articles = null;
public String getStatus() {
return status;
}
public void setStatus(String status) {
this.status = status;
}
public String getSource() {
return source;
}
public void setSource(String source) {
this.source = source;
}
public String getSortBy() {
return sortBy;
}
public void setSortBy(String sortBy) {
this.sortBy = sortBy;
}
public List<Article> getArticles() {
return articles;
}
public void setArticles(List<Article> articles) {
this.articles = articles;
}
}
最佳答案
您正在得到这样的响应
但是在模型类NewsCell
中,您只解析title ,description and urlToImage
数组中的articles
。
@SerializedName("title")
@Expose
private String title;
@SerializedName("description")
@Expose
private String description;
@SerializedName("urlToImage")
@Expose
private String urlToImage;
因此,我建议您复制整个答复。 goto this site并正确生成模型类。并粘贴到您的
NewsCell