用Android應用程序發送郵件

Question

我正在寫一個android應用程序，假設在某些時候發送電子郵件。我在谷歌中創建了一個新的電子郵件帳戶。用戶名是：pickup .friend.carpool。這是我的郵件發送類：

public class MailSending { 

    private static String HOST = "smtp.gmail.com"; 
    private static String USER = "pickup.friend.carpool@gmail.com"; 
    private static String PASSWORD = ""; //My password 
    private static String PORT = "465"; 
    private static String FROM = "mail.com"; 
    private static String TO; 
    private static String STARTTLS = "true"; 
    private static String AUTH = "true"; 
    private static String DEBUG = "true"; 
    private static String SOCKET_FACTORY = "javax.net.ssl.SSLSocketFactory"; 
    private static String SUBJECT; 
    private static String TEXT; 

    public void send(String to) { 
     TO = to; 
     SUBJECT = "subject"; 
     TEXT = "body of mail"; 

     Properties props = new Properties(); 
     props.put("mail.smtp.host", HOST); 
     props.put("mail.smtp.port", PORT); 
     props.put("mail.smtp.user", USER); 
     props.put("mail.smtp.auth", AUTH); 
     props.put("mail.smtp.starttls.enable", STARTTLS); 
     props.put("mail.smtp.debug", DEBUG); 
     props.put("mail.smtp.socketFactory.port", PORT); 
     props.put("mail.smtp.socketFactory.class", SOCKET_FACTORY); 
     props.put("mail.smtp.socketFactory.fallback", "false"); 

     try { 

      Session session = Session.getDefaultInstance(props, null); 
      session.setDebug(true); 

      MimeMessage message = new MimeMessage(session); 
      message.setText(TEXT); 
      message.setSubject(SUBJECT); 
      message.setFrom(new InternetAddress(FROM)); 
      message.addRecipient(RecipientType.TO, new InternetAddress(TO)); 
      message.saveChanges(); 

      Transport transport = session.getTransport("smtp"); 
      transport.connect(HOST, USER, PASSWORD); 

      transport.sendMessage(message, message.getAllRecipients()); 

      transport.close(); 
     } catch (Exception e) { 
      e.printStackTrace(); 
     } 
    } 
} 

這是我怎麼稱呼我的其他活動，這個類：

(new MailSending()).send("e-mail receiver"); 

每次程序進入郵件發送類它落在行，其中本寫成：message.saveChanges（）; 在我的AndroidMainfest文件上，我只有互聯網權限。 也許我的AndroidMainfest文件有權限問題？還有什麼可能是這個問題？

Answer 1

除了互聯網許可外你好， 你爲什麼不嘗試添加下列權限？

<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" /> 
<uses-permission android:name="android.permission.READ_INTERNAL_STORAGE" /> 
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> 

我希望它的工作原理..