如何测试在模拟器中发送失败的短信

Question

我正在开发一个可以发送短信的项目。我已经使用两个模拟器测试了应用程序，方法是从一个发送短信并从其他模拟器接收它。

但是，如果没有成功发送短信，我想要显示吐司。但我不能在模拟器中测试它。如果我发送短信到一个不是我的接收器模拟器号码的随机数，短信仍然成功发送。所以我总是看到消息＆＃34;短信被发送＆＃34;。

这是我的广播接收者代码：

sentReceiver = new BroadcastReceiver(){
          @Override
          public void onReceive(Context arg0, Intent arg1) {

            Utils.print("in sentreceiver onreceive");  
            Utils.print(getResultCode()+"");

            switch (getResultCode())
            {


              case Activity.RESULT_OK:
                Toast.makeText(getBaseContext(), "SMS sent",
                  Toast.LENGTH_SHORT).show();
                break;
              case SmsManager.RESULT_ERROR_GENERIC_FAILURE:
                Toast.makeText(getBaseContext(), "Generic failure",
                  Toast.LENGTH_SHORT).show();
                break;
              case SmsManager.RESULT_ERROR_NO_SERVICE:
                Toast.makeText(getBaseContext(), "No service",
                  Toast.LENGTH_SHORT).show();
                break;
              case SmsManager.RESULT_ERROR_NULL_PDU:
                Toast.makeText(getBaseContext(), "Null PDU",
                  Toast.LENGTH_SHORT).show();
                break;
              case SmsManager.RESULT_ERROR_RADIO_OFF:
                Toast.makeText(getBaseContext(), "Radio off",
                  Toast.LENGTH_SHORT).show();
                break;
            }
          }
        };

    deliveredReceiver = new BroadcastReceiver(){
          @Override
          public void onReceive(Context arg0, Intent arg1) {

              Utils.print("in deliverreceiver onreceive");

            switch (getResultCode())
            {
              case Activity.RESULT_OK:
                Toast.makeText(getBaseContext(), "SMS delivered",
                  Toast.LENGTH_SHORT).show();
                break;
              case Activity.RESULT_CANCELED:
                Toast.makeText(getBaseContext(), "SMS not delivered",
                  Toast.LENGTH_SHORT).show();
                break;
              }
            }
     };  

 // Receiver for Sent SMS.
    registerReceiver(sentReceiver, new IntentFilter(Constants.ACTION_SMS_SENT));

    // Receiver for Delivered SMS.
    registerReceiver(deliveredReceiver, new IntentFilter(Constants.ACTION_SMS_DELIVERED));