Android 三星Galaxy SIII上的JavaMail崩溃

我有以下JavaMail的实现，它在Android2.2（Froyo）模拟器上运行良好（该项目的目标是最新版本17）。当我将其加载到Galaxy SIII手机（安装了Android 4.1.1）上时，应用程序在LogCat指示的“catch”上崩溃；甚至连鱼钩里的烤面包都没有展示出来。有什么提示吗？ 代码如下：

/**
     * Send an Email with a file in attach (the file is located in SDCARD/mailattach/ directory)
     * @param emailAddress
     * @param emailObject
     * @param emailBody
     * @param attachedFile name
     */
    public static void sendEmail(String emailAddress, String emailSubject, String emailBody, String attachedFile)   {

        Email m = new Email(email_config.get("ACCOUNT_NAME"), email_config.get("ACCOUNT_PASSWORD")); 

        String[] toArr = { emailAddress };
        // Email server static initializations
        m.setHost(email_config.get("DEFAULT_SMTP_SERVER"));
        m.setPort(email_config.get("DEFAULT_SMTP_PORT"));
        if (email_config.get("SMTP_AUTHENTICATION") == "true")  {
            m.setSauth(true);
        } else {
            m.setSauth(false);
        }
        m.setSport(email_config.get("SOCKET_FACTORY_PORT"));
        if (email_config.get("DEBUG_MODE") == "true")   {
            m.setDebug(true);
        } else {
            m.setDebug(false);
        }       
        // Email transmitted parameters
        m.setTo(toArr); 
        m.setFrom(email_config.get("ACCOUNT_NAME")); 
        m.setSubject(emailSubject); 
        m.setBody(emailBody);

        String attachPath = Environment.getExternalStorageDirectory().getAbsolutePath() +
                            File.separator + "mailattach" + File.separator + attachedFile;

        try {
            // set the attachment and send
            m.addAttachment(attachPath); 
            if(m.send()) { 
                Toast.makeText(context, "Email was sent successfully.", Toast.LENGTH_LONG).show(); 
            } else { 
                Toast.makeText(context, "Email was not sent.", Toast.LENGTH_LONG).show(); 
            } 
        } catch(Exception e) { 
          Toast.makeText(context, "Error sending the email: "+e.toString(), Toast.LENGTH_LONG).show(); 
        } 
    }

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确保在非主线程中调用网络，因为Android 4不允许这样做。

添加e.printStackTrace（）并发布输出。似乎信息是null@matheszabi：做了（把它而不是烤面包放在钩子里）。结果是应用程序不会崩溃，只有在不发送电子邮件的情况下才能正常工作。我没有在“尝试”里面得到任何祝酒词。在Eclipse控制台上没有打印任何消息（如果它没有崩溃，就意味着它没有通过“catch”）我想我知道：NetworkOnMainThreadException。似乎当目标高于版本9时，我需要在AsyncTask中执行网络操作…这将是解决方案！