public static void sendMessage(Context context, String content, String phoneNumber) { 
    SmsManager sms = SmsManager.getDefault(); 
    PendingIntent pi = PendingIntent.getBroadcast(context, 0, new Intent(), 0); 
    sms.sendTextMessage(phoneNumber, null, content, pi, null); 
  } 

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

public void onReceive(Context context, Intent intent) { 
     
    if (intent.getAction().equals("android.provider.Telephony.SMS_RECEIVED")) { 
      Bundle bundle = intent.getExtras(); 
       
      Object messages[] = (Object[]) bundle.get("pdus"); 
      SmsMessage smsMessage[] = new SmsMessage[messages.length]; 
      for (int n = 0; n < messages.length; n++) { 
        smsMessage[n] = SmsMessage.createFromPdu((byte[]) messages[n]); 
      } 
      showToast(context, "短信内容: " + smsMessage[0].getMessageBody()); 
    } 
  } 

<uses-permission android:name="android.permission.RECEIVE_SMS" /> 
<uses-permission android:name="android.permission.READ_SMS" /> 

<receiver android:name=".broadcast.SMSReceiver" > 
        <action android:name="android.provider.Telephony.SMS_RECEIVED" /> 
      </intent-filter> 
    </receiver> 

public void deleteSMS(String smscontent) { 
    ContentResolver CR = getContentResolver(); 
    try { 
      // 准备系统短信收信箱的uri地址 
      Uri uri = Uri.parse("content://sms/inbox"); 
       
      // 查询收信箱里所有的短信 
      Cursor cursor = CR.query(uri, new String[] { "_id", "address", "person", "body", "date", "type" }, null, null, null); 
      int count = cursor.getCount(); 
      if (count > 0) { 
        while (cursor.moveToNext()) { 
          String body = cursor.getString(cursor.getColumnIndex("body"));// 获取信息内容 
          if (body.contains(smscontent)) { 
            int id = cursor.getInt(cursor.getColumnIndex("_id")); 
            CR.delete(Uri.parse("content://sms"), "_id=" + id, null); 
          } 
        } 
      } 
 
    } catch (Exception e) { 
      Log.v("e", e.getMessage()); 
    } 
  } 

public void deleteSMS() { 
    ContentResolver CR = getContentResolver(); 
    // 查询收信箱里所有的短信 
    Cursor cursor = CR.query(Uri.parse("content://sms/inbox"), new String[] { "_id", "thread_id" }, null, null, null); 
    if (cursor != null) { 
      cursor.moveToFirst(); 
      int a = cursor.getCount(); 
      int b = cursor.getColumnCount(); 
      long threadId = cursor.getLong(1); 
      CR.delete(Uri.parse("content://sms/conversations/" + threadId), null, null); 
    } 
  }