为什么我的函数调用不再有效？

Question

我的应用程序中有一个邮件功能，直到今天才正常工作，我在一个月左右没有碰过。

以下是我在我的应用中添加的邮件程序的链接：http://www.jondev.net/articles/Sending_Emails_without_User_Intervention_%28no_Intents%29_in_Android

我的问题在于条件，m.send（）由于某种原因没有被调用，但是else语句工作正常。我完全没有任何错误，并没有抓到任何东西。有人可以告诉我我的计划发生了什么事吗？

public void Mailing(String inputName, String inputPassword)
{
    Mail m = new Mail(inputName, inputPassword); 

    String[] toArr = {"fake@gmail.com"}; 
    m.setTo(toArr); 
    m.setFrom(inputName); 
    m.setSubject("Daily Time Card"); 
    m.setBody(""); 

    try 
    { 
      m.addAttachment(Environment.getExternalStorageDirectory().toString() + "/test"); 

      if(m.send()) 
      { 
        Toast.makeText(TaskReminderActivity.this, "Email was sent successfully.",  Toast.LENGTH_LONG).show(); 
      }
      else
      {
        Toast.makeText(TaskReminderActivity.this, "Email was not sent successfully.", Toast.LENGTH_LONG).show(); 
      }

    } catch(Exception e) { 
      Toast.makeText(TaskReminderActivity.this, "There was a problem sending the  email.", Toast.LENGTH_LONG).show();
      Toast.makeText(TaskReminderActivity.this, "Value of User Name is " + inputName, Toast.LENGTH_LONG).show();
      Toast.makeText(TaskReminderActivity.this, "Value of Password is " + inputPassword, Toast.LENGTH_LONG).show();
      Toast.makeText(TaskReminderActivity.this, "Value of Attachment is " + Environment.getExternalStorageDirectory().toString() + "/test.txt", Toast.LENGTH_LONG).show();
      Log.e("MailApp", "Could not send email", e); 
    } 
}