將函數傳遞到全局AsyncTask Android

我試圖創建一個全局動作文件，我可以在應用程序中的任何地方全局調用某些函數。到目前爲止，我已經得到它與函數等工作，但現在我想要做的是把一個標準的AsyncTask到我的全局行動，並從我的活動傳遞它的函數/空白，所以我想要傳遞一個函數來運行背景和一次運行完成後的功能。有誰知道這是怎麼回事？並且還建議我在後臺線程上運行多個函數我是否創建一個AsyncTask並以多個函數提供或者是否創建多個AsyncTasks？將函數傳遞到全局AsyncTask Android

繼承人我到目前爲止設法做到的全球範例以及我目前如何實施我的Asynctask。只是爲了重申我試圖將asynctask移動到全局行爲並儘可能重複使用

在我的全局動作im創建一個函數，制定一個URL併發送post變量到該url然後反饋一個JSON響應。然後在我的活動我已經創建了以下兩種功能調用請求，然後記錄響應

我的全球行動

public final static JSONObject startAPICallRequest(Context activityContext, String requestReference, String callLocation, Map<String, String> postVarsMap, Map<String, String> getVarsMap){ 

      long unixTimeStamp = System.currentTimeMillis()/1000L; 

      StringBuilder extraGetVarsString = new StringBuilder(); 
      if(getVarsMap != null){ 
       Map<String, String> map = (Map)getVarsMap; 
       for (Entry<String, String> entry : map.entrySet()) { 
        extraGetVarsString.append("&" + entry.getKey() + "=" + entry.getValue()); 
        extraGetVarsString.toString(); 
       } 
      } 

      String appVersion = null; 

      try { 
       appVersion = activityContext.getPackageManager().getPackageInfo(activityContext.getPackageName(), 0).versionName; 

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

       appVersion = activityContext.getResources().getString(R.string.appVersion); 
      } 
      String getVarsString = "?timestamp=" + unixTimeStamp + "&app_version=" + appVersion + extraGetVarsString; 
      String apiLocation = activityContext.getResources().getString(R.string.apiLocation); 
      String fullAPIURL = apiLocation + callLocation + getVarsString; 

      Log.v("globals", "fullAPIURL=" + fullAPIURL); 

      String api_key = activityContext.getResources().getString(R.string.apiKey); 
      String api_user = activityContext.getResources().getString(R.string.apiUser); 
      String request_token = returnSHAFromString(api_key, fullAPIURL); 
      String device_id = returnStringFromPreference(activityContext,"device_id"); 
      String user_token = returnStringFromPreference(activityContext,"user_token"); 

      List<NameValuePair> postVarsList = new ArrayList<NameValuePair>(); 
      postVarsList.add(new BasicNameValuePair("request_token", request_token)); 
      postVarsList.add(new BasicNameValuePair("api_user", api_user)); 
      postVarsList.add(new BasicNameValuePair("device_id", device_id)); 
      postVarsList.add(new BasicNameValuePair("user_token", user_token)); 

      if(postVarsMap != null){ 
       Map<String, String> map = (Map)postVarsMap; 
       for (Entry<String, String> entry : map.entrySet()) { 
        postVarsList.add(new BasicNameValuePair(entry.getKey(), entry.getValue())); 
       } 
      } 


      JSONObject responseJSON = null; 

      try { 
       HttpClient client = new DefaultHttpClient(); 
       HttpPost post = new HttpPost(fullAPIURL); 
       post.setEntity (new UrlEncodedFormEntity(postVarsList)); 

       HttpResponse response = client.execute(post); 
       BufferedReader reader = new BufferedReader(new InputStreamReader(response.getEntity().getContent(), "UTF-8")); 
       String jsonResponse = reader.readLine(); 

       Log.v("globals", "postList =" + postVarsList); 

      } catch (ClientProtocolException e) { 
       // TODO Auto-generated catch block 
       e.printStackTrace(); 
      } catch (IOException e) { 
       // TODO Auto-generated catch block 
       e.printStackTrace(); 
      } 

      return responseJSON; 

     }

我的活動

public void apiCall(){ 
     responseJSON = GlobalActions.startAPICallRequest(this, "login", "my-network/", null, null); 
    } 


    public class PostTask extends AsyncTask<Void, String, Boolean> { 

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

     } 

     @Override 
     protected Boolean doInBackground(Void... params) { 

      apiCall(); 
      boolean result = false; 
      publishProgress("progress"); 

      return result; 
     } 

     protected void onProgressUpdate(String... progress) { 
      StringBuilder str = new StringBuilder(); 
       for (int i = 1; i < progress.length; i++) { 
        str.append(progress[i] + " "); 

       } 
     } 

      @Override 
     protected void onPostExecute(Boolean result) { 
      super.onPostExecute(result); 
      checkLoginData(); 
      } 
    } 

    public void checkLoginData(){ 

     Log.v("IntroLoader", "responseJSON = " + responseJSON); 
     Intent register = new Intent(getApplicationContext(), LoginForm.class); 
     startActivity(register); 
    }

來源

2013-02-14 Luke Batley