Volley Libraryを使用してJSON配列を解析する方法は？

Question

ここにjsonがあります：https://api.jamendo.com/v3.0/tracks/?client_id=70c68f47&format=jsonpretty&limit=200&search=disco

私の質問は、私が持っているこのソリューションで正しい解析方法を作る方法です。私は追加の残りのアダプタを持っていない、ボレーはこのAPIからJSONを取得する必要があります。

このAPIを使用するには誰でも最初のコードをリメイクするのに手伝ってください。ここで

私はこのAPIを解析するために変更しようとしていますどのような要求である：

JsonArrayRequest movieReq = new JsonArrayRequest(url, 
      new Response.Listener<JSONArray>() { 
       @Override 
       public void onResponse(JSONArray response) { 
        Log.d(TAG, response.toString()); 
        hidePDialog(); 


        // Parsing json 
        for (int i = 0; i < response.length(); i++) { 
         try { 

          JSONObject obj = response.getJSONObject(i); 
          JSONArray jsonArray = obj.getJSONArray("results"); 
          for (int i2 = 0; i2 < jsonArray.length(); i2++) { 
           JSONObject jsonObject3 = jsonArray.getJSONObject(i2); 
           DataModelList movie = new DataModelList(); 
           movie.setTitle(obj.getString("name")); 
           movie.setThumbnailUrl(obj.getString("image")); 
           movie.setRating(((Number) obj.get("id")) 
             .doubleValue()); 
           movie.setYear(obj.getInt("releasedate")); 
           movieList.add(movie); 
          } 



         } catch (JSONException e) { 
          e.printStackTrace(); 
         } 

        } 

データモデル：

public class DataModelList { 
private String title, thumbnailUrl; 
private int year; 
private double rating; 
private ArrayList<String> genre; 

public DataModelList() { 
} 

public DataModelList(String name, String thumbnailUrl, int year, double rating, 
      ArrayList<String> genre) { 
    this.title = name; 
    this.thumbnailUrl = thumbnailUrl; 
    this.year = year; 
    this.rating = rating; 
    this.genre = genre; 
} 

public String getTitle() { 
    return title; 
} 

public void setTitle(String name) { 
    this.title = name; 
} 

public String getThumbnailUrl() { 
    return thumbnailUrl; 
} 

public void setThumbnailUrl(String thumbnailUrl) { 
    this.thumbnailUrl = thumbnailUrl; 
} 

public int getYear() { 
    return year; 
} 

public void setYear(int year) { 
    this.year = year; 
} 

public double getRating() { 
    return rating; 
} 

public void setRating(double rating) { 
    this.rating = rating; 
} 

} 

アダプタ一覧：

public class AdapterDataList extends BaseAdapter { 
private Activity activity; 
private LayoutInflater inflater; 
private List<DataModelList> movieItems; 
ImageLoader imageLoader = ControllerSingleton.getInstance().getImageLoader(); 

public AdapterDataList(Activity activity, List<DataModelList> movieItems) { 
    this.activity = activity; 
    this.movieItems = movieItems; 
} 

@Override 
public int getCount() { 
    return movieItems.size(); 
} 

@Override 
public Object getItem(int location) { 
    return movieItems.get(location); 
} 

@Override 
public long getItemId(int position) { 
    return position; 
} 

@Override 
public View getView(int position, View convertView, ViewGroup parent) { 

    if (inflater == null) 
     inflater = (LayoutInflater) activity 
       .getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
    if (convertView == null) 
     convertView = inflater.inflate(R.layout.list_row, null); 

    if (imageLoader == null) 
     imageLoader = ControllerSingleton.getInstance().getImageLoader(); 
    NetworkImageView thumbNail = (NetworkImageView) convertView 
      .findViewById(R.id.thumbnail); 
    TextView title = (TextView) convertView.findViewById(R.id.title); 
    TextView rating = (TextView) convertView.findViewById(R.id.rating); 
    TextView genre = (TextView) convertView.findViewById(R.id.genre); 
    TextView year = (TextView) convertView.findViewById(R.id.releaseYear); 

    // getting movie data for the row 
    DataModelList m = movieItems.get(position); 

    // thumbnail image 
    thumbNail.setImageUrl(m.getThumbnailUrl(), imageLoader); 

    // title 
    title.setText(m.getTitle()); 

    // rating 
    rating.setText("Rating: " + String.valueOf(m.getRating())); 

    // genre 


    // release year 
    year.setText(String.valueOf(m.getYear())); 

    return convertView; 
} 

} 

私がしたい全体の断片このJSONを解析する：

public class FirstFragment extends Fragment{ 
private static final String TAG = "log"; 
private static final String url = "https://api.jamendo.com/v3.0/tracks/?client_id=70c68f47&format=jsonpretty&limit=200&search=disco"; 
private ProgressDialog pDialog; 
private List<DataModelList> movieList = new ArrayList<DataModelList>(); 
private ListView listView; 
private AdapterDataList adapter; 
public FirstFragment() { 


} 

@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 


} 

@Override 
public View onCreateView(LayoutInflater inflater, ViewGroup container, 
         Bundle savedInstanceState) { 

    return inflater.inflate(R.layout.first_fragment, container, false); 
} 

@Override 
public void onViewCreated(View view, Bundle savedInstanceState) { 
    super.onViewCreated(view, savedInstanceState); 
    listView = (ListView) getView().findViewById(R.id.list); 

    adapter = new AdapterDataList(getActivity(),movieList); 
    listView.setAdapter(adapter); 

    pDialog = new ProgressDialog(getActivity()); 
    // Showing progress dialog before making http request 
    pDialog.setMessage("Loading..."); 
    pDialog.show(); 
    JsonArrayRequest movieReq = new JsonArrayRequest(url, 
      new Response.Listener<JSONArray>() { 
       @Override 
       public void onResponse(JSONArray response) { 
        Log.d(TAG, response.toString()); 
        hidePDialog(); 


        // Parsing json 
        for (int i = 0; i < response.length(); i++) { 
         try { 

          JSONObject obj = response.getJSONObject(i); 
          JSONArray jsonArray = obj.getJSONArray("results"); 
          for (int i2 = 0; i2 < jsonArray.length(); i2++) { 
           JSONObject jsonObject3 = jsonArray.getJSONObject(i2); 
           DataModelList movie = new DataModelList(); 
           movie.setTitle(obj.getString("name")); 
           movie.setThumbnailUrl(obj.getString("image")); 
           movie.setRating(((Number) obj.get("id")) 
             .doubleValue()); 
           movie.setYear(obj.getInt("releasedate")); 
           movieList.add(movie); 
          } 



         } catch (JSONException e) { 
          e.printStackTrace(); 
         } 

        } 

        // notifying list adapter about data changes 
        // so that it renders the list view with updated data 
        adapter.notifyDataSetChanged(); 
       } 
      }, new Response.ErrorListener() { 
     @Override 
     public void onErrorResponse(VolleyError error) { 
      VolleyLog.d(TAG, "Error: " + error.getMessage()); 
      hidePDialog(); 

     } 
    }); 

    // Adding request to request queue 
    ControllerSingleton.getInstance().addToRequestQueue(movieReq); 

} 


private void hidePDialog() { 
    if (pDialog != null) { 
     pDialog.dismiss(); 
     pDialog = null; 
    } 
} 

} 

Answer 1

RetrofitとUniversal Image Loaderで解決されました。