在android电子邮件中发送sqlite数据库

Question

我正在开发一个尝试发送电子邮件数据库的应用程序。但是如果发送了axexo文件。如果没有发送附件。代码如下：

public class Enviaremail extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);                 
        MailSender mailsender = new MailSender("lalala@gmail.com", "xxxxxx");
        String[] toArr = { "lalala@gmail.com"};
        mailsender.set_to(toArr);
        mailsender.set_from("lalala@gmail.com");
        mailsender.set_subject("This is an email sent using my Mail JavaMail wrapper from an Android device.");
        mailsender.setBody("Gracias a Dios.");

        try {
           mailsender.addAttachment("/data/data/org.segure.sms/databases/agenda.db");               ;

            if (mailsender.send()) {
                Toast.makeText(Enviaremail.this,
                        "Email enviado exitosamente.",
                        Toast.LENGTH_LONG).show();
            } else {
                Toast.makeText(Enviaremail.this, "Email no fue enviado.",
                        Toast.LENGTH_LONG).show();
            }
        } catch (Exception e) {

            Log.e("MailApp", "Could not send email", e);
        }


}
}

当我删除该行时：mailsender.addAttachment（“/ data / data / org.segure.sms / databases / agenda.db”）工作并发送邮件。如果我放置它不起作用。该文件存在于指定位置。提前谢谢。