我想直接发送邮件，没有Intent。 我已经下载了必要的文件， 加入我的图书馆。 但是当我点击提交按钮时 该程序已停止。 我不知道问题是什么？
java代码：
package com.kpbird.sendemail;
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;
public class SendEmail extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button send=(Button)findViewById(R.id.button_send);
send.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
Mail m = new Mail("<USER EMAIL>", "<PASSWORD>");
String[] toArr = {"<EMAIL-1>", "<EMAIL-2>"};
m.setTo(toArr);
m.setFrom("<EMAIL>");
m.setSubject("This is an email sent using my Mail JavaMail wrapper from an Android device.");
m.setBody("Email body");
try {
m.addAttachment("/sdcard/bday.jpg");
if(m.send()) {
Toast.makeText(getBaseContext(), "Email was sent successfully.", Toast.LENGTH_LONG).show();
} else {
Toast.makeText(getBaseContext(), "Email was not sent.", Toast.LENGTH_LONG).show();
}
} catch(Exception e) {
Log.e("MailApp", "Could not send email", e);
}
}
});
}
}
我还有一个文件Mail.java
package com.kpbird.sendemail;
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 void setTo(String[] toArr){
_to = toArr;
}
public void setFrom(String from){
_from = from;
}
public void setSubject(String subject){
_subject = subject;
}
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);
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;
}
// static {
// Security.addProvider(new com.indianic.email.JSSEProvider());
// }
// more of the getters and setters É..
}
在我的计划中。
LogCat是：
02-03 15:40:56.957: E/AndroidRuntime(19523): FATAL EXCEPTION: main
02-03 15:40:56.957: E/AndroidRuntime(19523): java.lang.NoClassDefFoundError: com.kpbird.sendemail.Mail
02-03 15:40:56.957: E/AndroidRuntime(19523): at com.kpbird.sendemail.SendEmail$1.onClick(SendEmail.java:23)
02-03 15:40:56.957: E/AndroidRuntime(19523): at android.view.View.performClick(View.java:3574)
02-03 15:40:56.957: E/AndroidRuntime(19523): at android.view.View$PerformClick.run(View.java:14293)
02-03 15:40:56.957: E/AndroidRuntime(19523): at android.os.Handler.handleCallback(Handler.java:605)
02-03 15:40:56.957: E/AndroidRuntime(19523): at android.os.Handler.dispatchMessage(Handler.java:92)
02-03 15:40:56.957: E/AndroidRuntime(19523): at android.os.Looper.loop(Looper.java:137)
02-03 15:40:56.957: E/AndroidRuntime(19523): at android.app.ActivityThread.main(ActivityThread.java:4448)
02-03 15:40:56.957: E/AndroidRuntime(19523): at java.lang.reflect.Method.invokeNative(Native Method)
02-03 15:40:56.957: E/AndroidRuntime(19523): at java.lang.reflect.Method.invoke(Method.java:511)
02-03 15:40:56.957: E/AndroidRuntime(19523): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:823)
02-03 15:40:56.957: E/AndroidRuntime(19523): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:590)
02-03 15:40:56.957: E/AndroidRuntime(19523): at dalvik.system.NativeStart.main(Native Method)
答案 0 :(得分：0)
Right click your Project -> Properties -> Java Build Path -> Order & Export
到达这里后，图书馆使用了你所使用的，＆＃34;选择＆＃34;这些库并将它们移到列表顶部。即假设你使用了＆＃34; xyz.jar＆＃34;文件然后跟随将是你的序列。
[x] xyz.jar
[x] Android x.x
[x] Android依赖项
....
清理后保存更改并重建项目。
<强>建议
我认为邮件类名是冲突的。尝试使用 MyMail 更改班级名称，然后尝试。