Android: Fetch Liste der Daten Retrofit mit

Question

Ich versuche, mit Retrofit Fetch Liste von Daten zu implementieren, Es funktioniert nicht, es zeigt leerer Bildschirm, kann ich nicht in der Lage Daten zu erhalten, meine Json Antwort ist als unten

[ 
      { 
       "code": 1, 
       "message": "listed!", 
       "totalrecord": 2, 
       "result": [ 
        { 
         "FieldTypeID": "2", 
         "Name": "Marketing" 
        }, 
        { 
         "FieldTypeID": "60", 
         "Name": "Designing" 
        }, 
        { 
         "FieldTypeID": "61", 
         "Name": "SEO" 
        }, 
        { 
         "FieldTypeID": "78", 
         "Name": "Mobile App Development" 
        } 
     ] 
    } 
] 

MainActivity.java

public class MainActivity extends ListActivity { 
     ArrayList<Result> flowerList; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 

//  final RestAdapter restadapter = new RestAdapter.Builder().setEndpoint("http://services.hanselandpetal.com").build(); 
     final RestAdapter restadapter = new RestAdapter.Builder().setEndpoint(BASE_URL).build(); 

     api flowerapi = restadapter.create(api.class); 

     flowerapi.getData(new Callback<ArrayList<Result>>() { 
      @Override 
      public void success(ArrayList<Result> flowers, Response response) { 
       flowerList = flowers; 
       Log.d("ArrayList:: :: :::", String.valueOf(flowerList.size())); 
       adapter adapt = new adapter(getApplicationContext(), R.layout.item_file, flowerList); 
       //ListView listView = (ListView) findViewById(R.id.list); 
       setListAdapter(adapt); 
      } 

      @Override 
      public void failure(RetrofitError error) { 
       Toast.makeText(getApplicationContext(), "Failed", Toast.LENGTH_SHORT).show(); 
      } 
     }); 
    } 

Interface ist api.java

public interface api { 

// @GET("/feeds/flowers.json") 
    @GET("/GetUserGroupList") 
    public void getData(Callback<ArrayList<Result>> response); 
} 

Result.Java

public class Result { 
    @SerializedName("FieldTypeID") 
    @Expose 
    private String FieldTypeID; 
    @SerializedName("Name") 
    @Expose 
    private String Name; 

    /** 
    * 
    * @return 
    * The FieldTypeID 
    */ 
    public String getFieldTypeID() { 
     return FieldTypeID; 
    } 

    /** 
    * 
    * @param FieldTypeID 
    * The FieldTypeID 
    */ 
    public void setFieldTypeID(String FieldTypeID) { 
     this.FieldTypeID = FieldTypeID; 
    } 

    /** 
    * 
    * @return 
    * The Name 
    */ 
    public String getName() { 
     return Name; 
    } 

    /** 
    * 
    * @param Name 
    * The Name 
    */ 
    public void setName(String Name) { 
     this.Name = Name; 
    } 
} 

Flower.java

public class Flower { 
    @SerializedName("code") 
    @Expose 
    private Integer code; 
    @SerializedName("message") 
    @Expose 
    private String message; 
    @SerializedName("totalrecord") 
    @Expose 
    private Integer totalrecord; 
    @SerializedName("result") 
    @Expose 
    private List<Result> result = new ArrayList<Result>(); 

    /** 
    * 
    * @return 
    * The code 
    */ 
    public Integer getCode() { 
     return code; 
    } 

    /** 
    * 
    * @param code 
    * The code 
    */ 
    public void setCode(Integer code) { 
     this.code = code; 
    } 

    /** 
    * 
    * @return 
    * The message 
    */ 
    public String getMessage() { 
     return message; 
    } 

    /** 
    * 
    * @param message 
    * The message 
    */ 
    public void setMessage(String message) { 
     this.message = message; 
    } 

    /** 
    * 
    * @return 
    * The totalrecord 
    */ 
    public Integer getTotalrecord() { 
     return totalrecord; 
    } 

    /** 
    * 
    * @param totalrecord 
    * The totalrecord 
    */ 
    public void setTotalrecord(Integer totalrecord) { 
     this.totalrecord = totalrecord; 
    } 

    /** 
    * 
    * @return 
    * The result 
    */ 
    public List<Result> getResult() { 
     return result; 
    } 

    /** 
    * 
    * @param result 
    * The result 
    */ 
    public void setResult(List<Result> result) { 
     this.result = result; 
    } 

} 

Bitte helfen Sie mir !!!

Log:

04-14 05:49:52.434 1375-1388/com.example.android.listviewretrofit D/__API__Service﹕ <--- HTTP 200 http://203.124.107.14:39/VrinsoftCRM.asmx/GetUserGroupList (242ms) 
04-14 05:49:52.434 1375-1388/com.example.android.listviewretrofit D/__API__Service﹕ Cache-Control: private, max-age=0 
04-14 05:49:52.434 1375-1388/com.example.android.listviewretrofit D/__API__Service﹕ Content-Length: 699 
04-14 05:49:52.434 1375-1388/com.example.android.listviewretrofit D/__API__Service﹕ Server: Microsoft-IIS/7.5 
04-14 05:49:52.434 1375-1388/com.example.android.listviewretrofit D/__API__Service﹕ X-AspNet-Version: 2.0.50727 
04-14 05:49:52.434 1375-1388/com.example.android.listviewretrofit D/__API__Service﹕ X-Powered-By: ASP.NET 
04-14 05:49:52.434 1375-1388/com.example.android.listviewretrofit D/__API__Service﹕ Date: Thu, 14 Apr 2016 09:48:54 GMT 
04-14 05:49:52.434 1375-1388/com.example.android.listviewretrofit D/__API__Service﹕ OkHttp-Selected-Protocol: http/1.1 
04-14 05:49:52.434 1375-1388/com.example.android.listviewretrofit D/__API__Service﹕ OkHttp-Sent-Millis: 1460627392316 
04-14 05:49:52.434 1375-1388/com.example.android.listviewretrofit D/__API__Service﹕ OkHttp-Received-Millis: 1460627392436 
04-14 05:49:52.434 1375-1388/com.example.android.listviewretrofit D/__API__Service﹕ [{"code":1,"message":"listed!","totalrecord":2,"result":[{"FieldTypeID": "2","Name": "Marketing" },{"FieldTypeID": "60","Name": "Designing" },{"FieldTypeID": "61","Name": "SEO" },{"FieldTypeID": "78","Name": "Mobile App Development" },{"FieldTypeID": "79","Name": ".Net Development" },{"FieldTypeID": "81","Name": "QA" },{"FieldTypeID": "94","Name": "HR" },{"FieldTypeID": "100","Name": "Business Analyst" },{"FieldTypeID": "101","Name": "Business Development Executive" },{"FieldTypeID": "131","Name": "Network Engg" },{"FieldTypeID": "142","Name": "Facebook" },{"FieldTypeID": "156","Name": "PHP Development" },{"FieldTypeID": "157","Name": "Google" },{"FieldTypeID": "158","Name": "Google 2" }]}] 
04-14 05:49:52.434 1375-1388/com.example.android.listviewretrofit D/__API__Service﹕ <--- END HTTP (699-byte body) 
04-14 05:49:52.434 1375-1375/com.example.android.listviewretrofit D/Suceess :: ::﹕ [ 04-14 05:49:52.434 1375: 1375 D/mListResult size :: :: ] 
    1 

Answer 1

diesen Code Versuchen unter

erstellen Klasse ApiService. Klasse

public class ApiService { 
private static final String TAG = "__API__Service"; 

private final api mApiService; 

public ApiService(Context context) { 
    final OkHttpClient okHttpClient = new OkHttpClient(); 
    okHttpClient.setReadTimeout(30, TimeUnit.SECONDS); 
    okHttpClient.setConnectTimeout(30, TimeUnit.SECONDS); 
    Gson gson = new GsonBuilder() 
      .setDateFormat("yyyy-MM-dd'T'HH:mm:ss") 
      .create(); 
    RestAdapter restAdapter = new RestAdapter.Builder() 
      .setEndpoint(BASE_URL) 
      .setLogLevel(RestAdapter.LogLevel.FULL) 
      .setClient(new OkClient(okHttpClient)) 
      .setLogLevel(BuildConfig.DEBUG ? RestAdapter.LogLevel.FULL : RestAdapter.LogLevel.NONE) 
      .setLog(new AndroidLog(TAG)) 
      .setConverter(new CleanGsonConverter(gson)) 
      .setErrorHandler(new CustomErrorHandler(context)) 
      .build(); 
    this.mApiService = restAdapter.create(api.class); 
} 

    public List<Result> getAllDataFromServer() { 
    if (mApiService != null) { 
     mApiService.getAllData(); 
    } 
} 
} 

erstellen CleanGsonConverter.class

public class CleanGsonConverter extends GsonConverter { 

private Gson mGson; 

public CleanGsonConverter(Gson gson) { 
    super(gson); 
    mGson = gson; 
} 

public CleanGsonConverter(Gson gson, String encoding) { 
    super(gson, encoding); 
    mGson = gson; 
} 

@Override 
public Object fromBody(TypedInput body, Type type) throws ConversionException { 
    boolean willCloseStream = false; // try to close the stream, if there is no exception thrown using tolerant JsonReader 
    try { 
     String mDirty = toString(body); 
     if (TextUtils.isEmpty(mDirty)) return null; 
     String clean = mDirty.replaceAll("(^\\(|\\)$)", ""); 
     body = new JsonTypedInput(clean.getBytes(Charset.forName("UTF-8"))); 
     JsonReader jsonReader = new JsonReader(new InputStreamReader(body.in())); 
     jsonReader.setLenient(true); 
     Object o = mGson.fromJson(jsonReader, type); 
     willCloseStream = true; 
     return o; 
    } catch (IOException e) { 
     e.printStackTrace(); 
     return null; 
    } finally { 
     if (willCloseStream) { 
      closeStream(body); 
     } 
    } 
} 

private String toString(TypedInput body) { 
    BufferedReader br = null; 
    StringBuilder sb = new StringBuilder(); 
    String line; 
    try { 
     br = new BufferedReader(new InputStreamReader(body.in())); 
     while ((line = br.readLine()) != null) { 
      sb.append(line); 
     } 

    } catch (IOException e) { 
     e.printStackTrace(); 
    } finally { 
     if (br != null) { 
      try { 
       br.close(); 
      } catch (IOException e) { 
       e.printStackTrace(); 
      } 
     } 
    } 

    return sb.toString(); 
} 

private void closeStream(TypedInput body) { 
    try { 
     InputStream in = body.in(); 
     in.close(); 
    } catch (IOException e) { 
     e.printStackTrace(); 
    } 
} 

} 

erstellen CustomErrorHandler.class

public class CustomErrorHandler implements ErrorHandler { 
private final Context mContext; 

public CustomErrorHandler(Context context) { 
    this.mContext = context; 
} 

@Override 
public Throwable handleError(RetrofitError cause) { 
    String errorDescription; 

    if (cause.isNetworkError()) { 
     errorDescription = mContext.getString(R.string.error_network); 
    } else { 
     if (cause.getResponse() == null) { 
      errorDescription = mContext.getString(R.string.error_no_response); 
     } else { 
      // Error message handling - return a simple error to Retrofit handlers.. 
      try { 
       ErrorResponse errorResponse = (ErrorResponse) cause.getBodyAs(ErrorResponse.class); 
       errorDescription = errorResponse.error.data.message; 
      } catch (Exception ex) { 
       try { 
        errorDescription = mContext.getString(R.string.error_network_http_error, cause.getResponse().getStatus()); 
       } catch (Exception ex2) { 
        DebugTool.logD("handleError: " + ex2.getLocalizedMessage()); 
        errorDescription = mContext.getString(R.string.error_unknown); 
       } 
      } 
     } 
    } 

    return new Exception(errorDescription); 
} 

public class ErrorResponse{ 
    Error error; 

    public class Error { 
     Data data; 

     public class Data { 
      String message; 
     } 
    } 
} 
} 

erstellen JsonTypedInput.class

public class JsonTypedInput implements TypedInput { 

private final byte[] mStringBytes; 

JsonTypedInput(byte[] stringBytes) { 
    this.mStringBytes = stringBytes; 
} 


@Override 
public String mimeType() { 
    return "application/json; charset=UTF-8"; 
} 

@Override 
public long length() { 
    return mStringBytes.length; 
} 

@Override 
public InputStream in() throws IOException { 
    return new ByteArrayInputStream(mStringBytes); 
} 

} 

add

01 bis gradle.build

compile 'com.squareup.okhttp:okhttp:2.6.0' 
compile 'com.squareup.retrofit:retrofit:1.9.0' 
compile 'com.google.code.gson:gson:1.7.2' 

in MainActivity.class

public class MainActivity extends ListActivity { 

private List<Result> mListResult; 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 
    mListResult = new ArrayList<Result>(); 
    new GetDataAsync(this).execute(); 
} 

    private class GetDataAsync extends AsyncTask<Void, Integer, Void> { 
    private final WeakReference<SplashActivity> mWeakReference; 
    private List<Result> mApiResult; 

    public GetDataAsync(MainActivity mainActivity) { 
     mWeakReference = new WeakReference<MainActivity>(mainActivity); 

    } 

    @Override 
    protected void onPreExecute() { 
     super.onPreExecute(); 

    } 


    @Override 
    protected Void doInBackground(Void... params) { 
     MainActivity activity = mWeakReference.get(); 

     if (activity != null) { 
     mApiResult = activity.mApiService.getAllDataFromServer(); 
     } 

} 
    @Override 
    protected void onPostExecute(Void aVoid) { 
     super.onPostExecute(aVoid); 
    adapter adapt = new adapter(getApplicationContext(), R.layout.item_file, mListResult); 
      setListAdapter(adapt); 
} 
} 

Klasse Schnittstelle

public interface api { 
@GET("/GetUserGroupList") 
List<Result> getAllData(); 
} 

Sie sollten customAdapter erstellen

public class CustomAdapter extends ArrayAdapter<Result> { 
private Context mContext; 
private List<Result> mListResult; 
private int saveStateItem = 1; 

public CustomAdapter(Context context, int resource, List<Result> objects) { 
    super(context, resource, objects); 
    this.mContext = context; 
    this.mListResult = objects; 
} 


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

@Override 
public Result getItem(int position) { 
    return mListResult.get(position); 
} 

@Override 
public View getView(final int position, View view, final ViewGroup parent) { 
    final ViewHolder holder; 
    if (view == null) { 
     LayoutInflater inflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
     view = inflater.inflate(R.layout.item_menu, null); 
     holder = new ViewHolder(); 
     holder.mType = (TextView) view.findViewById(R.id.textview_type); 
     holder.mName = (TextView) view.findViewById(R.id.textview_name); 
     view.setTag(holder); 
    } else { 
     holder = (ViewHolder) view.getTag(); 
    } 

    Result cate = mListResult.get(position); 
    holder.mType.setText(cate.getFieldTypeID()); 
    holder.mName.setText(cate.getName()); 


    return view; 
} 

public class ViewHolder { 
    public TextView mType; 
    public TextView mName; 
} 
} 

in MainActivity

public class MainActivity extends Activity 

in activity_main.xml.Sie müssen

<ListView 
android:id="@+id/listview" 
> 

und in Verfahren ID der Listenansicht ändern OnPostExecute

@Override 
    protected void onPostExecute(Void aVoid) { 
     super.onPostExecute(aVoid); 
    CustomAdapter adapt = new CustomAdapter(getApplicationContext(), R.layout.item_file, mListResult); 
      yourListView.setAdapter(adapt); 
} 

Answer 2

Sie benötigen

public class Result{ 
    public int code; 
    public String message; 
    public int totalrecord; 
    public List<Flower> result; 
} 

Dann api Methode ändern eine Hilfsklasse erstellen:

public void getData(Callback<List<Result>> response);