Question

我使用this link尝试了短信活动但问题是它总是给出“消息发送” 如何知道消息是否真的被发送了！

这是代码

try {
  SmsManager smsManager = SmsManager.getDefault();
  smsManager.sendTextMessage(phoneNo, null, sms, null, null);
  Toast.makeText(getApplicationContext(), "SMS Sent!",
    Toast.LENGTH_LONG).show();
  //...
}

Answer 1

试试这个：

在manifest.xml中添加：

<uses-permission android:name="android.permission.SEND_SMS">

main.xml中：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
    <TextView  
        android:layout_width="fill_parent" 
        android:layout_height="wrap_content" 
        android:text="Enter the phone number of recipient"
        />     
    <EditText 
        android:id="@+id/txtPhoneNo"  
        android:layout_width="fill_parent" 
        android:layout_height="wrap_content"        
        />
    <TextView  
        android:layout_width="fill_parent" 
        android:layout_height="wrap_content"         
        android:text="Message"
        />     
    <EditText 
        android:id="@+id/txtMessage"  
        android:layout_width="fill_parent" 
        android:layout_height="150px"
        android:gravity="top"         
        />          
    <Button 
        android:id="@+id/btnSendSMS"  
        android:layout_width="fill_parent" 
        android:layout_height="wrap_content"
        android:text="Send SMS"
        />    
</LinearLayout>

MainActivity：

public class SMS extends Activity 
{
    Button  btnSendSMS;
    EditText txtPhoneNo;
    EditText txtMessage;

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) 
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);        

        btnSendSMS = (Button ) findViewById(R.id.btnSendSMS);
        txtPhoneNo = (EditText) findViewById(R.id.txtPhoneNo);
        txtMessage = (EditText) findViewById(R.id.txtMessage);

        btnSendSMS.setOnClickListener(new View .OnClickListener() 
        {
            public void onClick(View  v) 
            {                
                String  phoneNo = txtPhoneNo.getText().toString();
                String  message = txtMessage.getText().toString();                 
                if (phoneNo.length()>0 && message.length()>0)                
                    sendSMS(phoneNo, message);                
                else
                    Toast.makeText(getBaseContext(), 
                        "Please enter both phone number and message.", 
                        Toast.LENGTH_SHORT).show();
            }
        });        
    }    
}

sendSMS（）函数：

public class SMS extends Activity 
{
    //...

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) 
    {
        //...
    }

    //---sends an SMS message to another device---
    private void sendSMS(String  phoneNumber, String  message)
    {        
        PendingIntent pi = PendingIntent.getActivity(this, 0,
            new Intent(this, SMS.class), 0);                
        SmsManager sms = SmsManager.getDefault();
        sms.sendTextMessage(phoneNumber, null, message, pi, null);        
    }    
}

// ---向另一台设备发送短信---：

private void sendSMS(String  phoneNumber, String  message)
    {        
        String  SENT = "SMS_SENT";
        String  DELIVERED = "SMS_DELIVERED";

        PendingIntent sentPI = PendingIntent.getBroadcast(this, 0,
            new Intent(SENT), 0);

        PendingIntent deliveredPI = PendingIntent.getBroadcast(this, 0,
            new Intent(DELIVERED), 0);

        //---when the SMS has been sent---
        registerReceiver(new BroadcastReceiver(){
            @Override
            public void onReceive(Context  arg0, Intent arg1) {
                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;
                }
            }
        }, new IntentFilter(SENT));

        //---when the SMS has been delivered---
        registerReceiver(new BroadcastReceiver(){
            @Override
            public void onReceive(Context  arg0, Intent arg1) {
                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;                        
                }
            }
        }, new IntentFilter(DELIVERED));        

        SmsManager sms = SmsManager.getDefault();
        sms.sendTextMessage(phoneNumber, null, message, sentPI, deliveredPI);        
    }

代码来源：http://mobiforge.com/developing/story/sms-messaging-android

Answer 2

在上述链接中，没有为deliveryIntent或sentIntent设置PendingIntent，以便接收您需要发送PendingIntent的消息的状态。见link

Answer 3

我也遇到过类似的NPE情况，但我的问题是由于错误的电话号码造成的。

因此，您还必须检查电话号码是否正确。

sendTextMessage（phoneNumber，null，message，null，null）;即使未发送消息，也始终返回成功

3 个答案: