Question

我正在开发一个原生的android应用程序，将电子邮件发送到已注册的邮件id.i不希望任何客户端发送邮件，它会直接发送邮件一旦用户在我的布局设计中点击了发送邮件按钮感谢

Answer 1

import java.util.Properties;

import javax.activation.DataHandler;
import javax.mail.Message;
import javax.mail.Session;
import javax.mail.URLName;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import javax.mail.util.ByteArrayDataSource;

import android.accounts.Account;
import android.accounts.AccountManager;
import android.accounts.AccountManagerCallback;
import android.accounts.AccountManagerFuture;
import android.app.Activity;
import android.os.Bundle;
import android.os.StrictMode;
import android.util.Log;

import com.sun.mail.smtp.SMTPTransport;
import com.sun.mail.util.BASE64EncoderStream;

public class GMailSender {
    private Session session;
    private String token;


    public String getToken() {
        return token;
    }

    public GMailSender(Activity ctx) {
        super();
        initToken(ctx);
    }

    public void initToken(Activity ctx) {

        AccountManager am = AccountManager.get(ctx);

        Account[] accounts = am.getAccountsByType("com.google");
        for (Account account : accounts) {
            Log.d("getToken", "account="+account);  
        }

        Account me = accounts[0]; //You need to get a google account on the device, it changes if you have more than one


        am.getAuthToken(me, "oauth2:https://mail.google.com/", null, ctx, new AccountManagerCallback<Bundle>(){
            @Override
            public void run(AccountManagerFuture<Bundle> result){
                try{
                    Bundle bundle = result.getResult();
                    token = bundle.getString(AccountManager.KEY_AUTHTOKEN);
                    Log.d("initToken callback", "token="+token);    

                } catch (Exception e){
                    Log.d("test", e.getMessage());
                }
            }
        }, null);

        Log.d("getToken", "token="+token);
    }



    public SMTPTransport connectToSmtp(String host, int port, String userEmail,
            String oauthToken, boolean debug) throws Exception {

        Properties props = new Properties();
        props.put("mail.smtp.starttls.enable", "true");
        props.put("mail.smtp.starttls.required", "true");
        props.put("mail.smtp.sasl.enable", "false");

        session = Session.getInstance(props);
        session.setDebug(debug);

        final URLName unusedUrlName = null;
        SMTPTransport transport = new SMTPTransport(session, unusedUrlName);
        // If the password is non-null, SMTP tries to do AUTH LOGIN.
        final String emptyPassword = null;

        /* enable if you use this code on an Activity (just for test) or use the AsyncTask
        StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
        StrictMode.setThreadPolicy(policy);
         */

        transport.connect(host, port, userEmail, emptyPassword);

        byte[] response = String.format("user=%s\1auth=Bearer %s\1\1",
                userEmail, oauthToken).getBytes();
        response = BASE64EncoderStream.encode(response);

        transport.issueCommand("AUTH XOAUTH2 " + new String(response), 235);

        return transport;
    }

    public synchronized void sendMail(String subject, String body, String user,
            String oauthToken, String recipients) {
        try {

            SMTPTransport smtpTransport = connectToSmtp("smtp.gmail.com", 587,
                    user, oauthToken, true);

            MimeMessage message = new MimeMessage(session);
            DataHandler handler = new DataHandler(new ByteArrayDataSource(
                    body.getBytes(), "text/plain"));
            message.setSender(new InternetAddress(user));
            message.setSubject(subject);
            message.setDataHandler(handler);
            if (recipients.indexOf(',') > 0)
                message.setRecipients(Message.RecipientType.TO,
                        InternetAddress.parse(recipients));
            else
                message.setRecipient(Message.RecipientType.TO,
                        new InternetAddress(recipients));
            smtpTransport.sendMessage(message, message.getAllRecipients());

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

}

以上下载mail.jar和activation.jar for android https://code.google.com/p/javamail-android/ 或尝试这些链接： http://nilvec.com/sending-email-without-user-interaction-in-android/ Javamail api in android using XOauth http://google-mail-xoauth-tools.googlecode.com/svn/trunk/java/com/google/code/samples/xoauth/XoauthAuthenticator.java

致谢电子邮件

1 个答案: