如何在後臺運行我的服務並在Android中關閉BroadcastReceiver？

我想在短信閱讀器的背景上運行我的服務。服務已在後臺運行。但我不想看App的界面，認爲這是一種方法。我隱藏了activity_main.xml，並且只是想在執行任務時關閉（在後臺運行）我的BroadcastReceiver，並且沒有找到辦法做到這一點。（順便說一下，我的MainActivity類是空的）。如何在後臺運行我的服務並在Android中關閉BroadcastReceiver？

這裏是MyReceiver類廣播接收器：

public class MyReceiver extends BroadcastReceiver { 

    public static final String SMS_EXTRA_NAME = "pdus"; 

    public void onReceive(Context arg0, Intent arg1) 
    { 
     Intent intent = new Intent(arg0,MyService.class); 
     arg0.startService(intent); 


     String messages = ""; 
     Bundle extras = arg1.getExtras() ; 
     if (extras != null) 
     { 
      // Get received SMS array 
      Object[] smsExtra = (Object[]) extras.get(SMS_EXTRA_NAME); 

      if (smsExtra != null) { 

       for (int i = 0; i < smsExtra.length; ++i) { 
        SmsMessage sms = SmsMessage.createFromPdu((byte[]) smsExtra[i]); 

        String body = sms.getMessageBody().toString(); 
        String address = sms.getOriginatingAddress(); 

        messages += "SMS from " + address + " :\n"; 
        messages += body + "\n"; 

        // Here you can add any your code to work with incoming SMS 
        // I added encrypting of all received SMS 
       } 

       // Display SMS message 
       Toast.makeText(arg0, messages, Toast.LENGTH_SHORT).show(); 
      } 


     } 
    } 
}

這裏是MyService.java

public class MyService extends Service { 

    @Override 
    public void onStart(Intent intent, int startid) { 
     Intent intents = new Intent(getBaseContext(), MainActivity.class); 
     intents.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 
     startActivity(intents); 
     Toast.makeText(this, "My Service Started", Toast.LENGTH_LONG).show(); 

    } 

    @Override 
    public IBinder onBind(Intent arg0) { 
// TODO Auto-generated method stub 
     return null; 
    } 
}

最後，我從這裏How to unregister BroadcastReceiver出來，但我不能運行他們的解決方案。

來源

2015-09-15 Codemir Codemir

你想對你的BroadcastReceiver到不能再運行，或者你希望它在後臺運行？ '只是想關閉（運行在免費）我的BroadcastReceiver' – nukeforum

對不起，錯了。自動關閉應用程序界面並在免費運行BroadcastReceiver。 –

我明白了。必須嘗試將'BroadcastReceiver'放入'Service'中？ – nukeforum

將接收器註冊爲服務初始化的一部分，而不是在清單中。這將允許您的接收器綁定到該服務，並且只要（並且只要只要）該服務能夠存活就繼續。

MyService

public class MyService 
extends Service 
{ 
    protected MyReceiver m_rcv = null ; 

    @Override 
    public void onCreate() 
    { 
     super.onCreate() ; 
     m_rcv = (new myReceiver()).bindToContext(this) ; 
    } 

    @Override 
    public void onDestroy() 
    { 
     this.unregisterReceiver(m_rcv) ; 
     super.onDestroy() ; 
    } 

    // rest of your code goes here 
}

MyReceiver

public class MyReceiver 
extends BroadcastReceiver 
{ 
    protected Context m_ctx = null ; 

    public MyReceiver bindToContext(Context ctx) 
    { 
     m_ctx = ctx ; 
     IntentFilter filter = new IntentFilter() ; 
     filter.addAction(/* Whatever action you need to intercept. */) ; 
     // Continue adding all desired actions to the filter... 
     ctx.registerReceiver(this, filter) ; 
     return this ; 
    } 

    // rest of your code goes here 
}

來源

2015-09-15 21:54:44 zerobandwidth

如何在後臺運行我的服務並在Android中關閉BroadcastReceiver？

回答

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