從新的操作之前的可運行調用前一操作調用服務。如何防止這一點？

Question

public class MyService extends Service { 
    long i = 0; 
    final String TAG="MyService"; 
    public void onCreate() { 
     //initialize service here 
    } 
    public int onStartCommand(Intent intent, int flags, int startId) { 
     log.i(TAG, i+":BEGIN"); 
     if (intent!=null) { 
      String action = intent.getAction(); 
      log.i(TAG, i+":"+action); 
      if (action.equals("RETRIEVE_SETTINGS_FROM_NET_SERVER") { 
       new GetSettings().run(); 
      } else if (action.equals("RESTART_SERVICE_COMPONENT")) { 
       //create alarmmanager code here 
      } 
      log.i(TAG, i+":complete"); 
      i++; 
     } 
    } 
    private class GetSettings implements Runnable { 
     String urlString; 
     public GetSettings(String _urlString) { 
      if (_urlString!=null) urlString = _urlString; 
     } 
     public void run() { 
      HttpURLConnection c; 
      if (urlString!= null) { 
       try { 
        URL u = new URL(urlString); 
        c = (HttpURLConnection) u.openConnection(); 
        c.setRequestMethod("GET"); 
        c.setInstanceFollowRedirects(true); 
        c.setDoOutput(true); 
        c.connect(); 
        int serverResponse = c.getResponseCode(); 
        switch (serverResponse) { 
         case HttpURLConnection.HTTP_OK: 
          InputStream in; 
          in = c.getInputStream(); 
          int next = -1; 
          StringBuffer tmpSvrResp = new StringBuffer(); 
          while ((next = in.read()) != -1) { 
           tmpSvrResp.append((char)next); 
          } 
          in.close(); 
          Map <String, String> newSettings = splitQuery(tmpSvrResp.toString()); 
          //Apply new settings. 
          break; 
         default: 
          break; 
        } 

       } catch (MalformedURLException e) { 
        log.i(e.toString()); 
       } finally { 
        if (c!=null) c.disconnect(); 
        if (isSuccessful) 
         Intent i = new Intent(MyService.this, MyService.class); 
         i.setAction("RESTART_SERVICE_COMPONENT"); 
         startService(i); //This call repeats RETRIEVE SETTINGS... action 
        } else { 
         Toast.makeText(MyService.this, "Error: setting new configuration from server!",Toast.LENGTH_SHORT); 
        } 
       } 
      } 
     } 
    } 
    private Map<String, String> splitQuery(URL url) throws UnsupportedEncodingException { 
     Map<String, String> query_pairs = new LinkedHashMap<String, String>(); 
     String query = url.getQuery(); 
     String[] pairs = query.split("&"); 
     for (String pair : pairs) { 
      int idx = pair.indexOf("="); 
      query_pairs.put(URLDecoder.decode(pair.substring(0, idx), "UTF-8"), URLDecoder.decode(pair.substring(idx + 1), "UTF-8")); 
     } 
     return query_pairs; 
    } 
} 
here is a sample log... 

MyService 0:BEGIN 
MyService 0:RETRIEVE_SETTINGS_FROM_NET_SERVER 
MyService 0:complete 
MyService 1:BEGIN 
MyService 1:RETRIEVE_SETTINGS_FROM_NET_SERVER 
MyService 1:complete 
MyService 2:BEGIN 
MyService 2:RESTART_SERVICE_COMPONENT 
MyService 2:complete 

嗨，我搜索了但我找不到類似的東西。我有一個從服務器獲取更新設置的服務。然後我重新開始時間表。我的問題是每當我打電話給startservice（i）時;在執行新操作之前，該服務將首先調用前一個操作的意圖。

Answer 1

我剛纔複製並執行了你的代碼，它對我來說工作得很好。 我只在onStartCommand()的末尾添加了return START_NOT_STICKY;。這裏是我的日誌：

08-01 11:09:33.840: I/MyService(1333): 0:BEGIN 
08-01 11:09:33.840: I/MyService(1333): 0:RETRIEVE_SETTINGS_FROM_NET_SERVER 
08-01 11:09:33.861: I/MyService(1333): 0:complete 
08-01 11:09:34.051: I/MyService(1333): 1:BEGIN 
08-01 11:09:34.051: I/MyService(1333): 1:RESTART_SERVICE_COMPONENT 
08-01 11:09:34.051: I/MyService(1333): 1:complete 

我想你在代碼中做了什麼錯誤，你已經隱藏了我們。喜歡這裏：

//create alarmmanager code here 

或在這裏：

//retrieve settings from internet server here... 
//parse values 
//apply new service scheduled interval 

請檢查自己，或者向我們展示的代碼，以便我們能看到的問題。

同時向我們展示您設置Intent的操作並首次啓動此服務的代碼。