如何檢查服務中的電話狀態

Question

我正在開發一個應用程序，其中我檢查電話的服務狀態，但是當電話處於飛行模式時它沒有響應，或者電話不具有SIM，那麼它也不工作。 plz幫助我的代碼是

TelephonyManager telMng=(TelephonyManager)getSystemService(Context.TELEPHONY_SERVICE); 
     telMng.listen(new PhoneStateListener(){ 

        @Override 
       public void onServiceStateChanged (ServiceState serviceState){ 
        super.onServiceStateChanged(serviceState); 
        String phonestate; 
       switch(serviceState.getState()) 
        { 
       case ServiceState.STATE_IN_SERVICE: 

        Toast.makeText(getApplicationContext(), "phone is in service", Toast.LENGTH_LONG).show(); 
        break; 
       case ServiceState.STATE_OUT_OF_SERVICE: 
        Toast.makeText(getApplicationContext(), "Phone is not in Service state", Toast.LENGTH_LONG).show(); 
        break; 
        default:phonestate="Unknown"; 
        } 
       /* 

        switch(serviceState.getState()){ 
        case ServiceState.STATE_EMERGENCY_ONLY: phonestate ="STATE_EMERGENCY_ONLY"; ;break; 
        case ServiceState.STATE_IN_SERVICE: phonestate ="STATE_IN_SERVICE"; ;break; 
        case ServiceState.STATE_OUT_OF_SERVICE: phonestate ="STATE_OUT_OF_SERVICE"; ;break; 
        case ServiceState.STATE_POWER_OFF: phonestate ="STATE_POWER_OFF"; ;break; 
        default:phonestate = "Unknown"; 
        } 
        */ 
      } 
     }, 
     PhoneStateListener.LISTEN_SERVICE_STATE); 

    } 
                                       i tried above code but its not working when phone is in flight mode or have not sim insert inside the phone what should i do plz help 

感謝低於事先

Answer 1

檢查手機是否開啓飛行模式，如果SIM卡是目前看到此鏈接

飛行模式鏈接： How can one detect airplane mode on Android?

SIM卡鏈接： How can I check whether the Sim Card is available in an android device?

Answer 2

以上不是正確的答案，因爲它只會告訴你，如果SIM卡不在服務中。

TelephonyManager.listen（PhoneStateListener（）{...}，PhoneStateListener.LISTEN_SERVICE_STATE）;

應該立即發送服務狀態並定期發送。如果您將sim狀態和服務狀態混合在一起，您將得到錯誤的結果 - 您將無法使用，但sim狀態仍將準備就緒。