IMDB APIで改造を使用する

Question

私は簡単なIMDBアプリケーションを構築しています。 API（http://www.omdbapi.com/）は一度に10枚の映画しか提供せず、ユーザーはどちらの「ページ」を指定できるかを指定できます。私はすべてのエントリを取得したいと思います。私のコードは次のようなものになります。

//This populates the list 
private void populateList(String title) { 
    myAPI.getSearchResults(title, page).enqueue(new Callback<Movies>() { 
     @Override 
     public void onResponse(Call<Movies> call, Response<Movies> response) { 
      movies = response.body().getSearch(); 
      recyclerView.setAdapter(new ItemAdapter(movies)); 
      recyclerView.addOnItemTouchListener(
       new ItemClickableListener(getActivity(), new ItemClickableListener.OnItemClickListener() { 
        @Override 
        public void onItemClick(View view, int position) { 
         String id = movies.get(position).getImdbID(); 
         showDetails(id, view); 
        } 
       })); 
     } 

     @Override 
     public void onFailure(Call<Movies> call, Throwable t) { 
      Log.d(TAG, "Error: " + t); 
     } 
    }); 
} 

をそして、私のインターフェイスに：

//For populating the list 
@GET("?") 
Call<Movies> getSearchResults(@Query("s") String title, @Query("page") int pages); 

は、合計でありますどのように多くのエントリを知るための方法がありますが、クエリはそれを取得するために少なくとも一度実行する必要があります情報私は "do ... while"ループでそれを修正し、ムービーの連続したバッチをリストに追加してから、RecyclerViewを読み込むだけでしたが、うまく動作しませんでした。たぶん私は何かを見落とした、それは正解ですが、それでも - もっと優雅なアプローチはありませんか？

Answer 1

と、それはほぼ完全に動作しますが、私はいくつかの問題に遭遇しました：callWebserviceはあなたのリストに項目を追加行われ

mRecyclerView.setLayoutManager(new LinearLayoutManager(getContext())); 
mAdapter = new MyAdapter(getActivity(), this); 
scrollListener = new EndlessRecyclerOnScrollListener((LinearLayoutManager) mRecyclerView.getLayoutManager()) { 
    @Override 
    public void onLoadMore(int page) { 
     callWebservice(page); 
    } 
}; 
mRecyclerView.addOnScrollListener(scrollListener); 
mRecyclerView.setAdapter(mAdapter); 

私はここにコードを掲載しています。私はそれらを交換するので、リスナーとアダプターを積み重ねていました。それはデータが挿入されるたびにスクロールアップしていたので、私はそれを余儀なくされましたが、ちょっとジッタがあります。

public class SearchFragment extends Fragment { 
final String TAG = "LOG.SearchFragment"; 
final String baseUrl = "http://www.omdbapi.com/"; 
Button searchButton; 
EditText searchField; 
RecyclerView recyclerView; 
LinearLayoutManager llm; 
String title = ""; 
int page = 1; 
List<Search> movies; 
Gson gson; 
Retrofit retrofit; 
MyAPI myAPI; 
ItemClickableListener listener; 
EndlessRecyclerOnScrollListener scrollListener; 
int firstItem; 
float topOffset; 

@Override 
public View onCreateView(LayoutInflater inflater, ViewGroup container, 
         Bundle savedInstanceState) { 
    Log.d(TAG, "Starting SearchFragment..."); 
    return inflater.inflate(R.layout.search_fragment, container, false); 
} 

@Override 
public void onViewCreated(View view, Bundle savedInstanceState) { 
    super.onViewCreated(view, savedInstanceState); 

    //Preparing RecyclerView 
    recyclerView = (RecyclerView) getActivity().findViewById(R.id.recycler_view); 
    llm = new LinearLayoutManager(getActivity(), LinearLayoutManager.VERTICAL, false); 
    recyclerView.setLayoutManager(llm); 
    setOnScrollManager(); 

    //List for the movies 
    movies = new ArrayList<>(); 

    //UI 
    searchField = (EditText) getActivity().findViewById(R.id.search_field); 
    searchButton = (Button) getActivity().findViewById(R.id.search_button); 
    searchButton.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View view) { 
      if (!searchField.getText().toString().equals("")) { 
       gson = new GsonBuilder().create(); 
       retrofit = new Retrofit.Builder() 
         .baseUrl(baseUrl) 
         .addConverterFactory(GsonConverterFactory.create(gson)) 
         .build(); 
       myAPI = retrofit.create(MyAPI.class); 
       title = searchField.getText().toString(); 
       movies.clear(); 
       page=1; 
       setOnScrollManager(); 
       fetchMovies(title, page); 
      } 
     } 
    }); 
} 

private void setOnScrollManager() { 
    if (scrollListener!=null) recyclerView.removeOnScrollListener(scrollListener); 
    scrollListener = new EndlessRecyclerOnScrollListener((LinearLayoutManager) recyclerView.getLayoutManager()) { 
     //This happens when user scrolls to bottom 
     @Override 
     public void onLoadMore(int newPage) { 
      Log.d(TAG, "OnLoadMore "+newPage); 
      //Preparing the scroll 
      firstItem = llm.findFirstVisibleItemPosition(); 
      View firstItemView = llm.findViewByPosition(firstItem); 
      topOffset = firstItemView.getTop(); 

      //Getting new page 
      page=newPage; 
      fetchMovies(title, page); 
     } 
    }; 
    recyclerView.addOnScrollListener(scrollListener); 
} 

//This populates the list 
private void fetchMovies(String title, int page) { 
    Log.d(TAG, "Getting "+title+", page "+page); 
    myAPI.getSearchResults(title, page).enqueue(new Callback<Movies>() { 
     @Override 
     public void onResponse(Call<Movies> call, Response<Movies> response) { 
      if (movies.size()==0) Toast.makeText(getActivity(), "No movies found", Toast.LENGTH_SHORT).show(); 
      movies.addAll(response.body().getSearch()); 
      //We swap the adatper's content when user scrolls down and loads more data 
      recyclerView.setRecycledViewPool(new RecyclerView.RecycledViewPool()); 
      recyclerView.swapAdapter(new ItemAdapter(movies), true); 

      //Scrolling 
      Log.d(TAG, "Scrolling to "+firstItem); 
      llm.scrollToPositionWithOffset(firstItem, (int) topOffset); 

      //We avoid stacking up listeners 
      if (listener!=null) recyclerView.removeOnItemTouchListener(listener); 
      listener = new ItemClickableListener(getActivity(), new ItemClickableListener.OnItemClickListener() { 
       @Override 
       public void onItemClick(View view, int position) { 
        String id = movies.get(position).getImdbID(); 
        showDetails(id, view); 
       } 
      }); 
      recyclerView.addOnItemTouchListener(listener); 
     } 

     @Override 
     public void onFailure(Call<Movies> call, Throwable t) { 
      Log.d(TAG, "Error: " + t); 
     } 
    }); 
} 

//This gets the movie details 
private void showDetails(String id, final View view){ 
    myAPI.getDetails(id).enqueue(new Callback<MovieDetails>() { 
     @Override 
     public void onResponse(Call<MovieDetails> call, Response<MovieDetails> response) { 
      showPopup(response.body(), view); 
     } 

     @Override 
     public void onFailure(Call<MovieDetails> call, Throwable t) { 
      Log.d(TAG, "Error: " + t); 
     } 
    }); 
} 

//This displays the movie details 
private void showPopup(MovieDetails details, View anchorView) { 

    View popupView = getActivity().getLayoutInflater().inflate(R.layout.popup_layout, null); 

    PopupWindow popupWindow = new PopupWindow(popupView, 
      RecyclerView.LayoutParams.WRAP_CONTENT, RecyclerView.LayoutParams.WRAP_CONTENT); 

    TextView title = (TextView) popupView.findViewById(R.id.movie_detail_title); 
    TextView year = (TextView) popupView.findViewById(R.id.movie_detail_year); 
    TextView rating = (TextView) popupView.findViewById(R.id.movie_detail_rating); 
    TextView director = (TextView) popupView.findViewById(R.id.movie_detail_director); 
    TextView stars = (TextView) popupView.findViewById(R.id.movie_detail_stars); 
    TextView desc = (TextView) popupView.findViewById(R.id.movie_detail_desc); 

    title.setText(details.getTitle()); 
    title.setTextColor(Color.parseColor("#ffffff")); 
    year.setText(details.getYear()); 
    year.setTextColor(Color.parseColor("#ffffff")); 
    rating.setText(details.getImdbRating()+"/10"); 
    rating.setTextColor(Color.parseColor("#ffffff")); 
    director.setText("Dir: "+details.getDirector()); 
    director.setTextColor(Color.parseColor("#ffffff")); 
    stars.setText("Stars: "+details.getActors()); 
    stars.setTextColor(Color.parseColor("#ffffff")); 
    desc.setText(details.getPlot()); 
    desc.setTextColor(Color.parseColor("#ffffff")); 

    UrlValidator urlValidator = new UrlValidator(); 
    if (urlValidator.isValid(details.getPoster())) { 
     ImageView poster = (ImageView) popupView.findViewById(R.id.movie_detail_poster); 
     ImageLoader imageLoader = ImageLoader.getInstance(); 
     imageLoader.displayImage(details.getPoster(), poster); 
    } 

    // If the PopupWindow should be focusable 
    popupWindow.setFocusable(true); 

    // If you need the PopupWindow to dismiss when when touched outside 
    popupWindow.setBackgroundDrawable(new ColorDrawable(Color.parseColor("#CC000000"))); 

    int location[] = new int[2]; 

    // Get the View's(the one that was clicked in the Fragment) location 
    anchorView.getLocationOnScreen(location); 

    // Using location, the PopupWindow will be displayed right under anchorView 
    popupWindow.showAtLocation(anchorView, Gravity.NO_GRAVITY, 
      location[0], location[1] + anchorView.getHeight()); 

} 
} 

Answer 2

ページを10枚ずつ検索するにはEndlessRecyclerViewが必要です。次のコードで：私はEndlessRecyclerViewをチェックアウトしてしまった

 @Override 
     public void onResponse(Call<List<ShortVideoModel>> call, Response<List<ShortVideoModel>> response) { 
      mAdapter.addItems(response.body()); 
     }