使用来自非活动类的retfit生成http请求

Question

由于需求的变化，我们不得不单独从服务器上使用REST服务。我见过它的改型。但我不确定如何在DAO类中使用它而不是SQL查询。

我们已经研究了公共汽车的概念，这需要更多的返工。我们希望对代码进行最小的更改来合并此更改。

如果还有什么需要，请告诉我。

    techList=new ArrayList<Technology>();
    techList=technologyBL.getAllTechnology(appId);
    adapterTech=new TechnologyAdapter(this,new ArrayList<Technology>  (techList));
    listView.setAdapter(adapterTech);

技术BL：

    public List<Technology> getAllTechnology(String appId) {
        techList=technologyDao.getAllTechnology(appId);
        // some logic 
        return techList;
    }

技术刀：

    public List<Technology> getAllTechnology(String appId) {
        //sql queries
        return techList;
    }

技术模型：

   class Technology{
        String id,techName,techDescription;
       //getters & setters
   }

    public interface IRestClient {

      @GET("/apps/{id}/technologies")
      void getTechnoloies(@Path("id") String id,Callback<List<Technology>> cb);

      //Remaining methods
    }

    public class RestClient {

          private static IRestClient REST_CLIENT;
          public static final String BASE_URL = "http://16.180.48.236:22197/api";
          Context context;

          static {
             setupRestClient();
          }

          private RestClient() {}

          public static RestClient get() {
             return REST_CLIENT;
          }

          private static void setupRestClient() {
               RestAdapter restAdapter = new RestAdapter.Builder()
                  .setEndpoint(BASE_URL)
                  .setClient(getClient())
                  .setRequestInterceptor(new RequestInterceptor() {
                  //cache related things
               })
               .setLogLevel(RestAdapter.LogLevel.FULL)
               .build();

               REST_CLIENT = restAdapter.create(IAluWikiClient.class);
           }

           private static OkClient getClient(){
                 //cache related
           }
    }

    techList=RestClient.get().getTecchnologies(id);

DAO中的异步调用：

    RestClient.get().getTechnolgies(id,new CallBack<List<Technolgy>(){
       @Override
       public void success(List<Technology> technologies, Response response)   {
            techList=technologies;
       }

       @Override
       public void failure(Retrofit error){}
   });

Answer 1

你有两个选择。

第一个是在活动中创建referfit回调：

RestClient.get().getTechnolgies(id,new CallBack<List<Technolgy>(){
   @Override
   public void success(List<Technology> technologies, Response response) {
        ArrayList<Technology> techList = technologyBL.someLogic(technologies);
        adapterTech=new TechnologyAdapter(this,techList);
        listView.setAdapter(adapterTech);
   }

   @Override
   public void failure(Retrofit error){}
});

注意，您必须将//某些逻辑部分提取到单独的BL方法中。

RestClient.get().getTechnolgies(id)
    .observeOn(AndroidSchedulers.mainThread())
    .subscribe(new Action1<List<Technology>>() {
         @Override
            public void call(List<Technology> technologies) {
                ArrayList<Technology> techList = technologyBL.someLogic(technologies);
                adapterTech=new TechnologyAdapter(this,techList);
                listView.setAdapter(adapterTech);
            }
     });

public interface IRestClient {

  @GET("/apps/{id}/technologies")
  Observable<List<Technology>> getTechnologies(@Path("id") String id);

  //Remaining methods
}