Android发送邮件代码

以下是一个发送邮件的基本代码示例，你需要在代码中填写你的邮箱地址和密码，以及收件人、主题和内容等信息：

public void sendEmail() {
    String email = "yourEmail@gmail.com";
    String password = "yourPassword";
    String recipient = "recipientEmail@gmail.com";
    String subject = "Test Email";
    String message = "This is a test email from Android.";

    String[] recipients = {recipient};

    Intent intent = new Intent(Intent.ACTION_SEND);
    intent.setType("message/rfc822");
    intent.putExtra(Intent.EXTRA_EMAIL, recipients);
    intent.putExtra(Intent.EXTRA_SUBJECT, subject);
    intent.putExtra(Intent.EXTRA_TEXT, message);

    try {
        // Authenticate with your Gmail account
        Authenticator auth = new Authenticator() {
            // Override the getPasswordAuthentication method
            protected PasswordAuthentication getPasswordAuthentication() {
                return new PasswordAuthentication(email, password);
            }
        };

        // Create a new session with Gmail SMTP server
        Session session = Session.getInstance(getProperties(), auth);

        // Send email using the created session
        Transport.send(new Message(session, recipients, subject, message));

        Toast.makeText(this, "Email sent successfully", Toast.LENGTH_SHORT).show();
    } catch (Exception e) {
        e.printStackTrace();
        Toast.makeText(this, "Failed to send email", Toast.LENGTH_SHORT).show();
    }
}

private Properties getProperties() {
    Properties props = new Properties();
    props.put("mail.smtp.auth", "true");
    props.put("mail.smtp.starttls.enable", "true");
    props.put("mail.smtp.host", "smtp.gmail.com");
    props.put("mail.smtp.port", "587");
    return props;
}

注意：在使用此代码之前，请确保已经在你的 Android 项目中添加了邮件发送相关的依赖库。