如何将值从enqueue函数返回到loadinbackground()listnews返回为null
公共类newsapploader扩展了asynctaskloader{
private static final String USGS_REQUEST_URL =
"https://newsapi.org/v2/everything?q=tesla&from=2021-04-18&sortBy=publishedAt&apiKey=47ebcd70505c4649b04dd050c8bbe307";
private static final String BASE_URL =
"https://newsapi.org/v2/";
private static final String LOG_TAG = "check";
final String API_KEY = "47ebcd70505c4649b04dd050c8bbe307";
public NewsAppLoader(Context context) {
super(context);
//this.apiClient = apiClient;
}
NewsAppAdapter newsAdapter;
Retrofit retrofit = new Retrofit.Builder()
.baseUrl(BASE_URL)
.addConverterFactory(GsonConverterFactory.create())
.build();
APIInterface api = retrofit.create(APIInterface.class);
Call<ResponseModel> call = api.getLatestNews("Tesla", API_KEY);
// @Nullable
@SuppressLint("LongLogTag")
@Override
public ArrayList<News> loadInBackground() {
ArrayList<News> listNews = new ArrayList<News>();
call.enqueue(new Callback<ResponseModel>() {
@Override
public void onResponse(Call<ResponseModel> call, Response<ResponseModel> response) {
if (response.body().getStatus().equals("ok")) {
List<Article> articleList = response.body().getArticles();
if (articleList.size() > 0) {
String title = articleList.get(0).getTitle();
String desc = articleList.get(0).getDescription();
String author = articleList.get(0).getAuthor();
String imgURL = articleList.get(0).getUrlToImage();
listNews.add(new News(title, null, desc, author));
// return new ArrayList<News>(listNews);
//getNewsList(listNews);
}
}
//return articleList;
}
@Override
public void onFailure(Call<ResponseModel> call, Throwable t) {
Log.e("out", t.toString());
}
});
return listNews;
}
// listNews = callRetrofit(call);
//return listNews;
public ArrayList<News> getNewsList(ArrayList<News> news) {
return news;
}
}
请建议任何方法从onresponse返回loadinbackground()的值。这样我就可以在列表视图适配器中加载这些值。
1条答案
按热度按时间gev0vcfq1#
你可以用
call.execute
同步得到回应。但是asynctask不是必需的,您可以使用当前代码而不使用asynctask。实际上,当您使用call.enqueue
,因此您可以轻松地使用它而无需执行异步任务