Question

我有两个用于发送简单（文本）电子邮件的java类，另一个用于附件。第一拳工作正常，但第二个，即附件类的电子邮件无效。我的应用程序崩溃，我无法弄清楚发生了什么错误：

NewEmailAttachmentSender.java：

import java.io.UnsupportedEncodingException;
import java.util.Date;
import java.util.Properties;

import javax.activation.DataHandler;
import javax.activation.DataSource;
import javax.activation.FileDataSource;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Multipart;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.AddressException;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;

public class NewEmailAttachmentSender {

   private static final String username = "123@gmail.com";
    private static final String password = "12345";

    public NewEmailAttachmentSender() {  }

    public void sendEmailWithAttachments(String email, String subject, String messageBody, String FilePath)
    {
        Session session = createSessionObject();
        try {
            final Message message = createMessage(email, subject, messageBody, FilePath, session);

            Thread t = new Thread(){                

                @Override
                public void run() {
                    try {
                        Transport.send(message);
                    } catch (MessagingException e) {
                        //TODO Handle Exception
                    }
                }
            };

            t.start();

            //new SendMailTask().execute(message);
        } catch (AddressException e) {
            e.printStackTrace();
        } catch (MessagingException e) {
            e.printStackTrace();
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        }

    }


    private Message createMessage(String email, String subject, String messageBody, String FilePath, Session session) throws MessagingException, UnsupportedEncodingException {
        //Log.i("check","createingMessage");
        Message message = new MimeMessage(session);  
        message.setFrom(new InternetAddress("123@gmail.com", "POST"));
        message.addRecipient(Message.RecipientType.TO, new InternetAddress("123@gmail.com"));
        message.setSubject(subject);
        message.setText(messageBody);
        message.setSentDate(new Date());
        Multipart multipart = new MimeMultipart("mixed");
        // creates message part
        MimeBodyPart messageBodyPart = new MimeBodyPart();
        DataSource source = new FileDataSource(FilePath);
        messageBodyPart.setDataHandler(new DataHandler(source));
        messageBodyPart.setFileName(source.getName());
        multipart.addBodyPart(messageBodyPart);
        message.setContent(multipart);
        return message;
    }


    private Session createSessionObject() {
        Properties properties = new Properties();
        properties.put("mail.smtp.auth", "true");
        properties.put("mail.smtp.starttls.enable", "true");
        properties.put("mail.smtp.host", "smtp.gmail.com");
        properties.put("mail.smtp.port", "587");

        return Session.getInstance(properties, new javax.mail.Authenticator() {
            protected PasswordAuthentication getPasswordAuthentication() {
                return new PasswordAuthentication( username, password);
            }
        });
    }

}

主要活动：

import com.post.gmailSender.GmailSender;
import com.post.gmailSender.NewEmailAttachmentSender;

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;


public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }


    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();
        if (id == R.id.action_settings) {
            return true;
        }
        return super.onOptionsItemSelected(item);
    }


    public void gmailSender(View view)
    {

        Log.d("tag","clicked");

         GmailSender sender = new GmailSender();

        try {   

            sender.sendMail("123@gmail.com", "Test Mail", "Post TestMail");
            //sender.start();
        } catch (Exception e) {   
            Log.e("SendMail", e.getMessage(), e);   
        } 

    }


    public void gmailwithattachment(View view)
    {
        Log.d("tag","clicked");

        NewEmailAttachmentSender sender = new NewEmailAttachmentSender();
        try {
            sender.sendEmailWithAttachments("123@gmail.com", "Test Mail", "Post TestMail","/sdcard/logo.png");

        } catch (Exception e) {
             Log.e("SendMail", e.getMessage(), e); 
        }




    }



}

Logcat：

08-11 15:58:22.226: E/AndroidRuntime(11763): FATAL EXCEPTION: main
08-11 15:58:22.226: E/AndroidRuntime(11763): Process: com.post.post, PID: 11763
08-11 15:58:22.226: E/AndroidRuntime(11763): java.lang.IllegalStateException: Could not find a method gmailAttchmentSender(View) in the activity class com.post.post.MainActivity for onClick handler on view class android.widget.Button with id 'button2'
08-11 15:58:22.226: E/AndroidRuntime(11763):    at android.view.View$1.onClick(View.java:3810)
08-11 15:58:22.226: E/AndroidRuntime(11763):    at android.view.View.performClick(View.java:4438)
08-11 15:58:22.226: E/AndroidRuntime(11763):    at android.view.View$PerformClick.run(View.java:18422)
08-11 15:58:22.226: E/AndroidRuntime(11763):    at android.os.Handler.handleCallback(Handler.java:733)
08-11 15:58:22.226: E/AndroidRuntime(11763):    at android.os.Handler.dispatchMessage(Handler.java:95)
08-11 15:58:22.226: E/AndroidRuntime(11763):    at android.os.Looper.loop(Looper.java:136)
08-11 15:58:22.226: E/AndroidRuntime(11763):    at android.app.ActivityThread.main(ActivityThread.java:5034)

Answer 1

我找到了崩溃的原因。

我在布局部分做错误，即

机器人：文本=＆＃34; gmailwithattachment＆＃34; 机器人：的onClick =＆＃34; gmailAttchmentSender＆＃34;

上面的文字是由我写的。现在崩溃没有发生，但带附件的电子邮件也没有发送。我也没有收到任何错误：（

附件应用程序的电子邮件正在崩溃 - Android

1 个答案: