我的JavaMail应用程序在Emulator上运行良好，但在我的android移动设备上不起作用

当我在emulator上运行我的应用程序时，它会发送电子邮件（正如我预期的那样），但当我尝试在设备上运行我的应用程序时，它会说“发送电子邮件时出现问题”。。。。。 我已经添加了3个jar文件I-e-mail.jar，附加的，激活的 我已经在清单中添加了internet权限

代码在这里

MainActivity.java

import java.util.Date;
import java.util.Properties;

import javax.activation.CommandMap;
import javax.activation.DataHandler;
import javax.activation.DataSource;
import javax.activation.FileDataSource;
import javax.activation.MailcapCommandMap;
import javax.mail.BodyPart;
import javax.mail.Multipart;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;

import android.os.Bundle;
import android.app.Activity;
import android.util.Log; 
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;

public class MainActivity extends Activity {

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    Button addImage = (Button) findViewById(R.id.button1); 
    addImage.setOnClickListener(new View.OnClickListener() { 
      public void onClick(View view) { 
        Mail m = new Mail("XXXXXX@gmail.com", "password"); 

        String[] toArr = {"send to @yahoo.com"}; 
        //m.send()
        m.setTo(toArr); 
        m.setFrom("YXY@gmail.com"); 
        m.setSubject("This is an email sent using my Mail JavaMail wrapper from an Android device."); 
        m.setBody("Email body."); 
        Toast.makeText(getApplicationContext(), "okkk setting.", Toast.LENGTH_LONG).show();
        try { 
       //   m.addAttachment("/sdcard/filelocation"); 

          if(m.send()) { 
            Toast.makeText(getApplicationContext(), "Email was sent successfully.", Toast.LENGTH_LONG).show(); 
          } else { 
            Toast.makeText(getApplicationContext(), "Email was not sent.", Toast.LENGTH_LONG).show(); 
          } 
        } catch(Exception e) { 
          Toast.makeText(getApplicationContext(), "There was a problem sending the email.",         Toast.LENGTH_LONG).show(); 
        //  Log.e("MailApp", "Could not send email", e); 
        } 
      } 
    }); 


}

public class Mail extends javax.mail.Authenticator { 
      private String _user; 
      private String _pass; 

      private String[] _to; 
      private String _from; 

      private String _port; 
      private String _sport; 

      private String _host; 

      private String _subject; 
      private String _body; 

      private boolean _auth; 

      private boolean _debuggable; 

      private Multipart _multipart; 


      public Mail() { 
        _host = "smtp.gmail.com"; // default smtp server 
        _port = "465"; // default smtp port 
        _sport = "465"; // default socketfactory port 

        _user = ""; // username 
        _pass = ""; // password 
        _from = ""; // email sent from 
        _subject = ""; // email subject 
        _body = ""; // email body 

        _debuggable = false; // debug mode on or off - default off 
        _auth = true; // smtp authentication - default on 

        _multipart = new MimeMultipart(); 

        // There is something wrong with MailCap, javamail can not find a handler for the multipart/mixed part, so this bit needs to be added. 
        MailcapCommandMap mc = (MailcapCommandMap) CommandMap.getDefaultCommandMap(); 
        mc.addMailcap("text/html;; x-java-content-handler=com.sun.mail.handlers.text_html"); 
        mc.addMailcap("text/xml;; x-java-content-handler=com.sun.mail.handlers.text_xml"); 
        mc.addMailcap("text/plain;; x-java-content-handler=com.sun.mail.handlers.text_plain"); 
        mc.addMailcap("multipart/*;; x-java-content-handler=com.sun.mail.handlers.multipart_mixed"); 
        mc.addMailcap("message/rfc822;; x-java-content-handler=com.sun.mail.handlers.message_rfc822"); 
        CommandMap.setDefaultCommandMap(mc); 
      } 

      public Mail(String user, String pass) { 
        this(); 

        _user = user; 
        _pass = pass; 
      } 

      public boolean send() throws Exception { 
        Properties props = _setProperties(); 

        if(!_user.equals("") && !_pass.equals("") && _to.length > 0 && !_from.equals("") && !_subject.equals("") && !_body.equals("")) { 
          Session session = Session.getInstance(props, this); 

        //  Toast.makeText(,"enter", Toast.LENGTH_LONG).show();
          MimeMessage msg = new MimeMessage(session); 

          msg.setFrom(new InternetAddress(_from)); 

          InternetAddress[] addressTo = new InternetAddress[_to.length]; 
          for (int i = 0; i < _to.length; i++) { 
            addressTo[i] = new InternetAddress(_to[i]); 
          } 
            msg.setRecipients(MimeMessage.RecipientType.TO, addressTo); 

          msg.setSubject(_subject); 
          msg.setSentDate(new Date()); 

          // setup message body 
          BodyPart messageBodyPart = new MimeBodyPart(); 
          messageBodyPart.setText(_body); 
          _multipart.addBodyPart(messageBodyPart); 

          // Put parts in message 
          msg.setContent(_multipart); 

          // send email 
          Transport.send(msg); 

          return true; 
        } else { 
          return false; 
        } 
      } 

      public void addAttachment(String filename) throws Exception { 
        BodyPart messageBodyPart = new MimeBodyPart(); 
        DataSource source = new FileDataSource(filename); 
        messageBodyPart.setDataHandler(new DataHandler(source)); 
        messageBodyPart.setFileName(filename); 

        _multipart.addBodyPart(messageBodyPart); 
      } 

      @Override 
      public PasswordAuthentication getPasswordAuthentication() { 
        return new PasswordAuthentication(_user, _pass); 
      } 

      private Properties _setProperties() { 
        Properties props = new Properties(); 

        props.put("mail.smtp.host", _host); 

        if(_debuggable) { 
          props.put("mail.debug", "true"); 
        } 

        if(_auth) { 
          props.put("mail.smtp.auth", "true"); 
        } 

        props.put("mail.smtp.port", _port); 
        props.put("mail.smtp.socketFactory.port", _sport); 
        props.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory"); 
        props.put("mail.smtp.socketFactory.fallback", "false"); 

        return props; 
      } 

      // the getters and setters 
      public String getBody() { 
        return _body; 
      } 

      public void setBody(String _body) { 
        this._body = _body; 
      }

    public void setTo(String[] toArr) {
        // TODO Auto-generated method stub
         this._to=toArr;
    }

    public void setFrom(String string) {
        // TODO Auto-generated method stub
        this._from=string;
    }

    public void setSubject(String string1) {
        // TODO Auto-generated method stub
        this._subject=string1;
    } 

      // more of the getters and setters ….. 
    } 

////

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    getMenuInflater().inflate(R.menu.activity_main, menu);
    return true;
}
}

Mail.java

import java.util.Date;
import java.util.Properties;

import javax.activation.CommandMap;
import javax.activation.DataHandler;
import javax.activation.DataSource;
import javax.activation.FileDataSource;
import javax.activation.MailcapCommandMap;
import javax.mail.BodyPart;
import javax.mail.Multipart;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;

import android.os.Bundle;
import android.app.Activity;
import android.util.Log; 
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;

public class MainActivity extends Activity {

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    Button addImage = (Button) findViewById(R.id.button1); 
    addImage.setOnClickListener(new View.OnClickListener() { 
      public void onClick(View view) { 
        Mail m = new Mail("XXXXXX@gmail.com", "password"); 

        String[] toArr = {"send to @yahoo.com"}; 
        //m.send()
        m.setTo(toArr); 
        m.setFrom("YXY@gmail.com"); 
        m.setSubject("This is an email sent using my Mail JavaMail wrapper from an Android device."); 
        m.setBody("Email body."); 
        Toast.makeText(getApplicationContext(), "okkk setting.", Toast.LENGTH_LONG).show();
        try { 
       //   m.addAttachment("/sdcard/filelocation"); 

          if(m.send()) { 
            Toast.makeText(getApplicationContext(), "Email was sent successfully.", Toast.LENGTH_LONG).show(); 
          } else { 
            Toast.makeText(getApplicationContext(), "Email was not sent.", Toast.LENGTH_LONG).show(); 
          } 
        } catch(Exception e) { 
          Toast.makeText(getApplicationContext(), "There was a problem sending the email.",         Toast.LENGTH_LONG).show(); 
        //  Log.e("MailApp", "Could not send email", e); 
        } 
      } 
    }); 


}

public class Mail extends javax.mail.Authenticator { 
      private String _user; 
      private String _pass; 

      private String[] _to; 
      private String _from; 

      private String _port; 
      private String _sport; 

      private String _host; 

      private String _subject; 
      private String _body; 

      private boolean _auth; 

      private boolean _debuggable; 

      private Multipart _multipart; 


      public Mail() { 
        _host = "smtp.gmail.com"; // default smtp server 
        _port = "465"; // default smtp port 
        _sport = "465"; // default socketfactory port 

        _user = ""; // username 
        _pass = ""; // password 
        _from = ""; // email sent from 
        _subject = ""; // email subject 
        _body = ""; // email body 

        _debuggable = false; // debug mode on or off - default off 
        _auth = true; // smtp authentication - default on 

        _multipart = new MimeMultipart(); 

        // There is something wrong with MailCap, javamail can not find a handler for the multipart/mixed part, so this bit needs to be added. 
        MailcapCommandMap mc = (MailcapCommandMap) CommandMap.getDefaultCommandMap(); 
        mc.addMailcap("text/html;; x-java-content-handler=com.sun.mail.handlers.text_html"); 
        mc.addMailcap("text/xml;; x-java-content-handler=com.sun.mail.handlers.text_xml"); 
        mc.addMailcap("text/plain;; x-java-content-handler=com.sun.mail.handlers.text_plain"); 
        mc.addMailcap("multipart/*;; x-java-content-handler=com.sun.mail.handlers.multipart_mixed"); 
        mc.addMailcap("message/rfc822;; x-java-content-handler=com.sun.mail.handlers.message_rfc822"); 
        CommandMap.setDefaultCommandMap(mc); 
      } 

      public Mail(String user, String pass) { 
        this(); 

        _user = user; 
        _pass = pass; 
      } 

      public boolean send() throws Exception { 
        Properties props = _setProperties(); 

        if(!_user.equals("") && !_pass.equals("") && _to.length > 0 && !_from.equals("") && !_subject.equals("") && !_body.equals("")) { 
          Session session = Session.getInstance(props, this); 

        //  Toast.makeText(,"enter", Toast.LENGTH_LONG).show();
          MimeMessage msg = new MimeMessage(session); 

          msg.setFrom(new InternetAddress(_from)); 

          InternetAddress[] addressTo = new InternetAddress[_to.length]; 
          for (int i = 0; i < _to.length; i++) { 
            addressTo[i] = new InternetAddress(_to[i]); 
          } 
            msg.setRecipients(MimeMessage.RecipientType.TO, addressTo); 

          msg.setSubject(_subject); 
          msg.setSentDate(new Date()); 

          // setup message body 
          BodyPart messageBodyPart = new MimeBodyPart(); 
          messageBodyPart.setText(_body); 
          _multipart.addBodyPart(messageBodyPart); 

          // Put parts in message 
          msg.setContent(_multipart); 

          // send email 
          Transport.send(msg); 

          return true; 
        } else { 
          return false; 
        } 
      } 

      public void addAttachment(String filename) throws Exception { 
        BodyPart messageBodyPart = new MimeBodyPart(); 
        DataSource source = new FileDataSource(filename); 
        messageBodyPart.setDataHandler(new DataHandler(source)); 
        messageBodyPart.setFileName(filename); 

        _multipart.addBodyPart(messageBodyPart); 
      } 

      @Override 
      public PasswordAuthentication getPasswordAuthentication() { 
        return new PasswordAuthentication(_user, _pass); 
      } 

      private Properties _setProperties() { 
        Properties props = new Properties(); 

        props.put("mail.smtp.host", _host); 

        if(_debuggable) { 
          props.put("mail.debug", "true"); 
        } 

        if(_auth) { 
          props.put("mail.smtp.auth", "true"); 
        } 

        props.put("mail.smtp.port", _port); 
        props.put("mail.smtp.socketFactory.port", _sport); 
        props.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory"); 
        props.put("mail.smtp.socketFactory.fallback", "false"); 

        return props; 
      } 

      // the getters and setters 
      public String getBody() { 
        return _body; 
      } 

      public void setBody(String _body) { 
        this._body = _body; 
      }

    public void setTo(String[] toArr) {
        // TODO Auto-generated method stub
         this._to=toArr;
    }

    public void setFrom(String string) {
        // TODO Auto-generated method stub
        this._from=string;
    }

    public void setSubject(String string1) {
        // TODO Auto-generated method stub
        this._subject=string1;
    } 

      // more of the getters and setters ….. 
    } 

////

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    getMenuInflater().inflate(R.menu.activity_main, menu);
    return true;
}
}

公共类邮件扩展了javax.Mail.Authenticator{
私有字符串用户；
私人字符串传递；
私有字符串[]_至；
私有字符串_来自；
专用字符串\u端口；
私人弦乐运动；
私有字符串\u主机；
私有字符串(subject);；
私有字符串(body),；
私有布尔认证；
私有布尔可调试；
私有多部分_多部分；
公共邮件（）{
_host=“smtp.gmail.com”；//默认smtp服务器
_port=“465”；//默认smtp端口
_sport=“465”//默认socketfactory端口
_user=”“；//用户名
_pass=”“；//密码
_from=”“；//从发送的电子邮件
_subject=”“；//电子邮件主题
_body=”“；//电子邮件正文
_debuggable=false；//打开或关闭调试模式-默认关闭
_auth=true；//smtp身份验证-默认为打开
_multipart=新的MimeMultipart（）；
//MailCap有点问题，javamail无法找到多部分/混合部分的处理程序，因此需要添加此位。
MailcapCommandMap mc=（MailcapCommandMap）CommandMap.getDefaultCommandMap（）；
mc.addMailcap（“text/html；x-java-content-handler=com.sun.mail.handlers.text_html”）；
mc.addMailcap（“text/xml；x-java-content-handler=com.sun.mail.handlers.text_xml”）；
mc.addMailcap（“text/plain；；x-java-content-handler=com.sun.mail.handlers.text_plain”）；
mc.addMailcap（“multipart/*；x-java-content-handler=com.sun.mail.handlers.multipart_mixed”）；
mc.addMailcap（“message/rfc822；；x-java-content-handler=com.sun.mail.handlers.message_rfc822”）；
setDefaultCommandMap（mc）；
} 
公用邮件（字符串用户，字符串传递）{
这个（）；
_用户=用户；
_通过=通过；
} 
public boolean send（）引发异常{
Properties props=_setProperties（）；
如果（！\u user.equals（“”&）&！\u pass.equals（“”&）&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
Session Session=Session.getInstance（props，this）；
//Toast.makeText（，“输入”，Toast.LENGTH_LONG）.show（）；
MimeMessage msg=新MimeMessage（会话）；
msg.setFrom（新的Internet地址（_-from））；
InternetAddress[]addressTo=新的InternetAddress[_to.length]；
对于（int i=0；i<_to.length；i++）{
addressTo[i]=新的Internet地址（_to[i]）；
} 
msg.setRecipients（mimessage.RecipientType.TO，addressTo）；
msg.setSubject（_subject）；
msg.setSentDate（新日期（））；
//设置消息正文
BodyPart messageBodyPart=新的MimeBodyPart（）；
messageBodyPart.setText（_body）；
_multipart.addBodyPart（messageBodyPart）；
//将部件放入消息中
msg.setContent（_多部分）；
//发送电子邮件
发送（msg）；
返回true；
}否则{
返回false；
} 
} 
public void addAttachment（字符串文件名）引发异常{
BodyPart messageBodyPart=新的MimeBodyPart（）；
DataSource source=新文件DataSource（文件名）；
setDataHandler（新的DataHandler（源））；
messageBodyPart.setFileName（文件名）；
_multipart.addBodyPart（messageBodyPart）；
} 
@凌驾
公共密码身份验证getPasswordAuthentication（）{
返回新密码身份验证（_user，_pass）；
} 
私有属性_setProperties（）{
Properties props=新属性（）；
props.put（“mail.smtp.host”，\u host）；
如果（_可调试）{
props.put（“mail.debug”，“true”）；
} 
如果（_auth）{
props.put（“mail.smtp.auth”，“true”）；
} 
props.put（“mail.smtp.port”，_-port）；
props.put（“mail.smtp.socketFactory.port”，_sport）；
put（“mail.smtp.socketFactory.class”、“javax.net.ssl.SSLSocketFactory”）；
props.put（“mail.smtp.socketFactory.fallback”、“false”）；
返回道具；
} 
//接球手和二传手
公共字符串getBody（）{
返回体；
} 
公共体（字符串_体）{
这个。_body=_body；
}
public void setTo（字符串[]toArr）{
//TODO自动生成的方法存根
这个。_to=toArr；
}
公共void setFrom（字符串）{
//TODO自动生成的方法存根
这个。_from=string；
}
公共void setSubject（字符串string1）{
//TODO自动生成的方法存根
这一点。_subject=string1；
} 
//更多的能手和二传手…。。
} 
////
@凌驾
公共布尔onCreateOptions菜单（菜单）{
getMenuInflater（）.充气（R.menu.activity\u主菜单）；
返回true；
}
}

我找到了解决办法

实际上，存在一个api战斗性问题

第一个外接程序onCreate方法

  if (android.os.Build.VERSION.SDK_INT > 9) {
        StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
        StrictMode.setThreadPolicy(policy);
      }

然后在manifst文件中进行更改

<uses-sdk
    android:minSdkVersion="9"
    android:targetSdkVersion="15" />

现在在我的emulator+移动设备上运行良好

我找到了解决方案

实际上，存在一个api战斗性问题

第一个外接程序onCreate方法

  if (android.os.Build.VERSION.SDK_INT > 9) {
        StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
        StrictMode.setThreadPolicy(policy);
      }

然后在manifst文件中进行更改

<uses-sdk
    android:minSdkVersion="9"
    android:targetSdkVersion="15" />

---

现在它可以在emulator+移动设备上正常工作了

让我猜一下：这隐藏了

android.os.NetworkOnMainThreadException

，但实际上并不能解决在UI线程上执行网络I/O的问题。（使用例如an

---

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