如何让Android服务完成后自行停止？

Question

我在我的应用程序中实现了一项服务。上传任务完成后，我想自行停止服务。我试图检测网络，当无线或移动网络可用，然后开始上传我的数据在服务器上，并在完成上传任务后停止onCreate()方法中的服务本身。我在服务启动时记录了一条消息，但我不明白为什么即使在呼叫this.stopSelf()之后，它也会连续打印停止服务消息。如何在Android中正确使用服务？

这是我的服务代码。

public class ServiceTest extends Service { 

    @Override 
    public IBinder onBind(Intent intent) { 
     return null; 
    } 

    @Override 
    public void onCreate() 
    { 
     super.onCreate(); 
     mTimer = new Timer(); 
     mTimer.schedule(timerTask, 2000, 15 * 1000); 
    } 

    @Override 
    public int onStartCommand(Intent intent, int flags, int startId) { 
     try { 

     } catch (Exception e) { 
      e.printStackTrace(); 
     } 
     return super.onStartCommand(intent, flags, startId); 
    } 

    private Timer mTimer; 

    TimerTask timerTask = new TimerTask() { 

     @Override 
     public void run() 
     { 
      getConnectivityStatusString(getApplicationContext()); 
     } 
    }; 

    public String getConnectivityStatusString(Context context) { 
     int conn = Constant.getConnectivityStatus(context); 
     String status = null; 
     if (conn == Constant.TYPE_WIFI) 
     { 
      status = "Wifi enabled"; 
      Log.e("", " status = " + status); 

      ConnectivityManager conMgr = (ConnectivityManager)context.getApplicationContext().getSystemService(Context.CONNECTIVITY_SERVICE); 
      { 
       NetworkInfo netInfo = conMgr.getActiveNetworkInfo(); 
       if (netInfo == null) 
       { 
        Log.e(" Not "," Accessible !!!"); 
       } 
       else 
       { 

        Log.e(" Start ", " To Loading !!!!"); 
        //new Welcome_Page().execute(); 
        this.stopSelf(); 
        Log.e(" Stop ", " The Service !!!!"); 
       } 
      } 

     } else if (conn == Constant.TYPE_MOBILE) { 
      status = "Mobile data enabled"; 
      Log.e(""," status = "+status); 
      this.stopSelf(); 
      Log.e(" Stop ", " The Service !!!!"); 
     } else if (conn == Constant.TYPE_NOT_CONNECTED) { 
      status = "Not connected to Internet"; 
      Log.e(""," status = "+status); 
     } 
     return status; 
    } 

    public void onDestroy() { 
     try { 
      mTimer.cancel(); 
      timerTask.cancel(); 
     } catch (Exception e) { 
      e.printStackTrace(); 
     } 

     Intent intent = new Intent("com.android.techtrainner"); 
     intent.putExtra("yourvalue", "torestore"); 
     sendBroadcast(intent); 
    } 
} 

这里是我的BroadcastReceiver类代码。

public class ReceiverCall extends BroadcastReceiver 
{ 
    @Override 
    public void onReceive(Context context, Intent intent) 
    { 
     context.startService(new Intent(context, ServiceTest.class)); 
    } 
} 

这是我的网络代码。

public class Constant 
{ 
    public static int TYPE_WIFI = 1; 
    public static int TYPE_MOBILE = 2; 
    public static int TYPE_NOT_CONNECTED = 0; 


    public static int getConnectivityStatus(Context context) { 
     ConnectivityManager cm = (ConnectivityManager) context 
       .getSystemService(Context.CONNECTIVITY_SERVICE); 

     NetworkInfo activeNetwork = cm.getActiveNetworkInfo(); 
     if (null != activeNetwork) { 
      if(activeNetwork.getType() == ConnectivityManager.TYPE_WIFI) 

       return TYPE_WIFI; 

      if(activeNetwork.getType() == ConnectivityManager.TYPE_MOBILE) 
       return TYPE_MOBILE; 
     } 
     return TYPE_NOT_CONNECTED; 
    } 
} 

Answer 1

你必须要在这onStartCommand方法

@Override 
public int onStartCommand(Intent intent, int flags, int startId) { 

    return START_NOT_STICKY; 
} 

返回此START_NOT_STICKY后，你可以写stopSelf（）;方法，只要你想要停止服务。在menifest文件 添加您的服务这样

<service 
     android:name=".YourService" 
     android:enabled="true" 
     android:exported="true" > 
    </service> 

Answer 2

在这样的

<service 
    android:name=".ServiceTest" 
    android:stopWithTask="true" /> 

的清单，并为progrmatically尝试这些，停止该服务： -

stopService(new Intent(YOUR_CONTEXT.this, ServiceTest.class)) 

Answer 3

如果你想在执行某些特定任务后自行停止的服务

It's bett呃使用IntentService而不是服务类

你可以找到更多关于它这里

http://developer.android.com/guide/components/services.html

查找IntentService部分