我有一个xml文件，用户会在其中输入电子邮件，然后点击提交按钮，我希望应用程序自动发送包含特定内容的电子邮件到该电子邮件..
任何好的教程或示例我可以从???
获得帮助 package com.example.emailtest;
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
public class main extends Activity{
public Button bsend;
public Mail m;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
bsend=(Button) findViewById(R.id.button1);
bsend.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
Mail mail = new Mail();
try {
mail.send();
} catch (Exception e) {
e.printStackTrace();
}}
});
}
@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;
}
}
logcat的
12-13 02:22:51.831: W/dalvikvm(2588): Unable to resolve superclass of Lcom/example/emailtest/Mail; (820)
12-13 02:22:51.831: W/dalvikvm(2588): Link of class 'Lcom/example/emailtest/Mail;' failed
12-13 02:22:51.831: E/dalvikvm(2588): Could not find class 'com.example.emailtest.Mail', referenced from method com.example.emailtest.MainActivity$1.onClick
12-13 02:22:51.831: W/dalvikvm(2588): VFY: unable to resolve new-instance 711 (Lcom/example/emailtest/Mail;) in Lcom/example/emailtest/MainActivity$1;
12-13 02:22:51.841: D/dalvikvm(2588): VFY: replacing opcode 0x22 at 0x0000
12-13 02:22:51.841: W/dalvikvm(2588): Unable to resolve superclass of Lcom/example/emailtest/Mail; (820)
12-13 02:22:51.841: W/dalvikvm(2588): Link of class 'Lcom/example/emailtest/Mail;' failed
12-13 02:22:51.841: D/dalvikvm(2588): DexOpt: unable to opt direct call 0x13b3 at 0x02 in Lcom/example/emailtest/MainActivity$1;.onClick
12-13 02:22:52.101: D/gralloc_goldfish(2588): Emulator without GPU emulation detected.
12-13 02:22:54.681: D/AndroidRuntime(2588): Shutting down VM
12-13 02:22:54.681: W/dalvikvm(2588): threadid=1: thread exiting with uncaught exception (group=0xb4acab90)
12-13 02:22:54.701: E/AndroidRuntime(2588): FATAL EXCEPTION: main
12-13 02:22:54.701: E/AndroidRuntime(2588): Process: com.example.emailtest, PID: 2588
12-13 02:22:54.701: E/AndroidRuntime(2588): java.lang.NoClassDefFoundError: com.example.emailtest.Mail
12-13 02:22:54.701: E/AndroidRuntime(2588): at com.example.emailtest.MainActivity$1.onClick(MainActivity.java:22)
12-13 02:22:54.701: E/AndroidRuntime(2588): at android.view.View.performClick(View.java:4424)
12-13 02:22:54.701: E/AndroidRuntime(2588): at android.view.View$PerformClick.run(View.java:18383)
12-13 02:22:54.701: E/AndroidRuntime(2588): at android.os.Handler.handleCallback(Handler.java:733)
12-13 02:22:54.701: E/AndroidRuntime(2588): at android.os.Handler.dispatchMessage(Handler.java:95)
12-13 02:22:54.701: E/AndroidRuntime(2588): at android.os.Looper.loop(Looper.java:137)
12-13 02:22:54.701: E/AndroidRuntime(2588): at android.app.ActivityThread.main(ActivityThread.java:4998)
12-13 02:22:54.701: E/AndroidRuntime(2588): at java.lang.reflect.Method.invokeNative(Native Method)
12-13 02:22:54.701: E/AndroidRuntime(2588): at java.lang.reflect.Method.invoke(Method.java:515)
12-13 02:22:54.701: E/AndroidRuntime(2588): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:777)
12-13 02:22:54.701: E/AndroidRuntime(2588): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:593)
12-13 02:22:54.701: E/AndroidRuntime(2588): at dalvik.system.NativeStart.main(Native Method)
12-13 02:22:58.121: I/Process(2588): Sending signal. PID: 2588 SIG: 9
答案 0 :(得分：2)
在我的情况下，我使用了Java Mail API，您可以使用下面的代码。请添加必要的详细信息，如用户名，密码，电子邮件ID等使用本教程http://www.jondev.net/articles/Sending_Emails_without_User_Intervention_%28no_Intents%29_in_Android
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"; // username
_pass = "password"; // password
_from = "emailsentfrom@gmail.com"; // email sent from
_to = new String[] {"toemail@gmail.com"};
_subject = "subject"; // email subject
_body = "test"; // 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) {
_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);
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);
// adding attachment
addAttachment("filename");//replace with file name u need
// Put parts in message
msg.setContent(_multipart);
// send email
Transport transport = session.getTransport("smtps");
transport.connect(_host, 465,_user, _pass);
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");
props.put("mail.smtp.starttls.enable", "true");
return props;
}
// the getters and setters
public String getBody() {
return _body;
}
public void setBody(String _body) {
this._body = _body;
}
// more of the getters and setters É..
}
并编写Async任务以发送邮件
public class SendTask extends AsyncTask<String, Integer, Integer> {
private ProgressDialog dialog;
private Context mContext;
public SendTask(Context mContext){
this.mContext = mContext;
}
protected void onPreExecute() {
this.dialog = new ProgressDialog(mContext);
this.dialog.setCancelable(false);
this.dialog.setMessage("sending");
this.dialog.show();
}
protected Integer doInBackground(String... ids) {
Mail mail = new Mail();
try {
mail.send();
} catch (Exception e) {
e.printStackTrace();
}
return 1;
}
}
答案 1 :(得分：0)
在按钮的xml文件中，定义android:onClick="SendMail"
当您点击按钮时，这将调用您活动中的SendMail功能。
接下来，获取对用户输入电子邮件正文的EditText视图的引用。
例如：如果EditText视图的资源ID为edittext1，那么在您的活动中，您需要执行以下操作：
EditText ed=(EditText)findViewById(R.id.edittext1);
String emailBody=ed.getText().toString();
现在emailBody字符串由用户输入的邮件正文组成。
接下来，在您的活动中，您需要定义一个函数SendMail()，如下所示：
void SendMail(String body) {
String recipient="usrname@mail.com";
String subject="Your subject here";
Intent i = new Intent(Intent.ACTION_SEND);
i.setType("message/rfc822");
i.putExtra(Intent.EXTRA_EMAIL , recipient);
i.putExtra(Intent.EXTRA_SUBJECT, subject);
i.putExtra(Intent.EXTRA_TEXT , body);
try {
startActivity(Intent.createChooser(i, "Send mail..."));
} catch (android.content.ActivityNotFoundException ex) {
Toast.makeText(MyActivity.this, "There are no email clients installed.", Toast.LENGTH_SHORT).show();
}
}
这种方法对我有所帮助，希望它对你也有所帮助。