sendTextMessage（phoneNumber，null，message，null，null）;總是返回成功，即使消息未發送

Question

我試過短信活動使用this link 但問題是，它總是給「消息發送」 如何知道消息是否真的發送！

這裏是代碼

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

Answer 1

試試這個：

添加這裏面的manifest.xml：

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

的main.xml：

<?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（ ）fu nction：

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);   
    }  
} 

// ---發送短信到另一臺設備---：

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);   
    } 

代碼源：http://mobiforge.com/developing/story/sms-messaging-android

Answer 2

在提到的鏈接，沒有的PendingIntent，以獲得您需要發送的PendingIntent消息的狀態爲deliveryIntent或sentIntent設置。看到這個link

Answer 3

我也遇到了類似的情況NPE問題，但在我最終是由於錯誤的電話號碼。

所以，你還必須檢查是否電話號碼是正確與否。