OkHttp觸發回調的起源類整理的網絡行爲

Question

這裏後是情景：我有一個活動，命名爲MainActivity，調用OkHttp包裝類，命名NetworkManager在後臺進行網絡帖子：

// In MainActivity 
NetworkManager manager = new NetworkManager(); 
try { 
    manager.post("http://www.example.com/api/", reqObj); // reqObj is a JSONObject 
} catch(IOException ioe) { 
    Log.e(TAG, ioe.getMessage()); 
} 

然後，在NetworkManager，我執行異步模式POST操作：

public class NetworkManager { 
    static String TAG = "NetworkManager"; 
    public static final MediaType JSON = MediaType.parse("application/json; charset=utf-8"); 
    OkHttpClient client = new OkHttpClient(); 

    void post(String url, JSONObject json) throws IOException { 
     //RequestBody body = RequestBody.create(JSON, json); 
     try { 
      JSONArray array = json.getJSONArray("d"); 
      RequestBody body = new FormEncodingBuilder() 
        .add("m", json.getString("m")) 
        .add("d", array.toString()) 
        .build(); 
      Request request = new Request.Builder() 
        .url(url) 
        .post(body) 
        .build(); 

      // Asynchronous Mode 
      client.newCall(request).enqueue(new Callback() { 
       @Override 
       public void onFailure(Request request, IOException e) { 
        Log.e(TAG, e.toString()); 
        // what should I put here? 
       } 

       @Override 
       public void onResponse(Response response) throws IOException { 
        Log.w(TAG, response.body().string()); 
        // what should I put here? 
       } 
      }); 
     } catch (JSONException jsone) { 
      Log.e(TAG, jsone.getMessage()); 
     } 
    } 
} 

我試圖做到的，是調用一個函數在MainActivity後網絡帖子是成功還是失敗。我怎樣才能做到這一點？

Answer 1

您可以使用onFailure和onResponse創建接口，然後讓YourActivity實施它。並且，在NetworkManager嘗試通知YourActivity使用偵聽器。

 // MainActivity implements NetworkListener 
     NetworkManager manager = new NetworkManager(); 
     manager.setOnNetWorkListener(this); 
     try { 
      manager.post("http://www.example.com/api/", reqObj); // reqObj is a JSONObject 
     } catch(IOException ioe) { 
      Log.e(TAG, ioe.getMessage()); 
     } 
     void onFailure(Request request, IOException e) { 
      // call your activity methods 
     } 
     void onResponse(Response response) { 
      // call your activity methods 
     } 

     // ======NetworkManager class============ 
     public class NetworkManager { 
      static String TAG = "NetworkManager"; 
      public static final MediaType JSON = MediaType.parse("application/json; charset=utf-8"); 
      OkHttpClient client = new OkHttpClient(); 
      public NetworkListenerv listener; 
      public void setOnNetWorkListener(NetworkListener listener) { 
       this.listener = listener 
      } 
      // Asynchronous Mode 
      client.newCall(request).enqueue(new Callback() { 
       @Override 
       public void onFailure(Request request, IOException e) { 
        Log.e(TAG, e.toString()); 
        // what should I put here? 
        if (listener != null) { 
         listener.onFailure(request, e); 
        } 
       } 

       @Override 
       public void onResponse(Response response) throws IOException { 
        Log.w(TAG, response.body().string()); 
        // what should I put here? 
        if (listener != null) { 
         listener.onResponse(response); 
        } 
       } 
      }); 

    // Your interface; 
    public interface NetworkListener { 
     void onFailure(Request request, IOException e); 
     void onResponse(Response response); 
    }