private class RetriveTask extends AsyncTask<String,Void,Void>{
@Override
protected void onPreExecute() {
prop = new Properties();
prop.put("mail.smtp.host", "smtp.gmail.com");
prop.put("mail.smtp.socketFactory.port", "465");
prop.put("mail.smtp.socketFactory.class",
"javax.net.ssl.SSLSocketFactory");
prop.put("mail.smtp.auth", "true");
prop.put("mail.smtp.port", "465");
session = Session.getDefaultInstance(prop,
new javax.mail.Authenticator() {
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(username,password);
}
});
};
@Override
protected Void doInBackground(String... params) {
try{
Message message = new MimeMessage(session);
message.setFrom(new InternetAddress("dev.montaser@gmail.com"));
message.setRecipients(Message.RecipientType.TO,
InternetAddress.parse("eng.montaser99@yahoo.com"));
message.setSubject("Test JCG Example");
message.setContent("Hello how are you","text/html; charset=utf-8");
Transport.send(message);
} catch (AddressException e) {
Toast.makeText(getBaseContext(),"Problem in addree",Toast.LENGTH_LONG).show();
} catch (MessagingException e) {
Toast.makeText(getBaseContext(),"Problem in message",Toast.LENGTH_LONG).show();
}
return null;
}
@Override
protected void onPostExecute(Void s) {
Toast.makeText(context,"Message send",Toast.LENGTH_LONG).show();
}
}
日志：
02-20 12:04:50.115: E/AndroidRuntime(2052): FATAL EXCEPTION: main
02-20 12:04:50.115: E/AndroidRuntime(2052): Process: com.example.control, PID: 2052
02-20 12:04:50.115: E/AndroidRuntime(2052): java.lang.NoClassDefFoundError: com.example.control.MainActivity$RetriveTask$1
02-20 12:04:50.115: E/AndroidRuntime(2052): at com.example.control.MainActivity$RetriveTask.onPreExecute(MainActivity.java:149)
02-20 12:04:50.115: E/AndroidRuntime(2052): at android.os.AsyncTask.executeOnExecutor(AsyncTask.java:587)
02-20 12:04:50.115: E/AndroidRuntime(2052): at android.os.AsyncTask.execute(AsyncTask.java:535)
02-20 12:04:50.115: E/AndroidRuntime(2052): at com.example.control.MainActivity$1.onClick(MainActivity.java:62)
02-20 12:04:50.115: E/AndroidRuntime(2052): at android.view.View.performClick(View.java:4756)
02-20 12:04:50.115: E/AndroidRuntime(2052): at android.view.View$PerformClick.run(View.java:19749)
02-20 12:04:50.115: E/AndroidRuntime(2052): at android.os.Handler.handleCallback(Handler.java:739)
02-20 12:04:50.115: E/AndroidRuntime(2052): at android.os.Handler.dispatchMessage(Handler.java:95)
02-20 12:04:50.115: E/AndroidRuntime(2052): at android.os.Looper.loop(Looper.java:135)
02-20 12:04:50.115: E/AndroidRuntime(2052): at android.app.ActivityThread.main(ActivityThread.java:5221)
02-20 12:04:50.115: E/AndroidRuntime(2052): at java.lang.reflect.Method.invoke(Native Method)
02-20 12:04:50.115: E/AndroidRuntime(2052): at java.lang.reflect.Method.invoke(Method.java:372)
02-20 12:04:50.115: E/AndroidRuntime(2052): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
02-20 12:04:50.115: E/AndroidRuntime(2052): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)
答案 0 :(得分：0)
一个意图是最简单的方法，老实说，一点点谷歌搜索没有伤害！
Intent i = new Intent(Intent.ACTION_SEND);
i.setType("message/rfc822");
i.putExtra(Intent.EXTRA_EMAIL , new String[]{"example@example.com"});
i.putExtra(Intent.EXTRA_SUBJECT, "subject");
i.putExtra(Intent.EXTRA_TEXT , "body / text here");
//send
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();
}
答案 1 :(得分：0)
我建议您在类这样的课程中收集邮件发件人设置：
public class GmailSender extends javax.mail.Authenticator {
private String mailhost = "smtp.gmail.com";
private String user;
private String password;
private Session session;
static {
Security.addProvider(new com.provider.JSSEProvider());
}
public GmailSender(String user, String password) {
this.user = user;
this.password = password;
Properties props = new Properties();
props.put("mail.smtp.user", user);
props.put("mail.smtp.auth", "true");
props.put("mail.smtp.host", mailhost);
props.put("mail.smtp.starttls.enable", "true");
props.put("mail.smtp.port", "587");
props.put("mail.debug", "true");
session = Session.getInstance(props, this);
}
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(user, password);
}
public synchronized void sendMail(String subject, String body, String sender, String recipients) throws Exception {
try{
MimeMessage message = new MimeMessage(session);
DataHandler handler = new DataHandler(new ByteArrayDataSource(body.getBytes(), "text/plain"));
message.setSender(new InternetAddress(sender));
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));
Transport t = session.getTransport("smtp");
t.connect(mailhost, user, password);
t.sendMessage(message, message.getAllRecipients());
}catch(Exception e){
e.printStackTrace();
}
}
public class ByteArrayDataSource implements DataSource {
private byte[] data;
private String type;
public ByteArrayDataSource(byte[] data, String type) {
super();
this.data = data;
this.type = type;
}
public ByteArrayDataSource(byte[] data) {
super();
this.data = data;
}
public void setType(String type) {
this.type = type;
}
public String getContentType() {
if (type == null)
return "application/octet-stream";
else
return type;
}
public InputStream getInputStream() throws IOException {
return new ByteArrayInputStream(data);
}
public String getName() {
return "ByteArrayDataSource";
}
public OutputStream getOutputStream() throws IOException {
throw new IOException("Not Supported");
}
}
}
使用此类并使用该函数在AsynchTask上发送邮件：
private void sendMail()
{
GmailSender sender = new GmailSender("yourMailAddress", "yourPassword");
try {
sender.sendMail("YourTitle",
"mailContent",
"fromMailAdress",
"toMailAdress");
} catch (Exception e) {
e.printStackTrace();
}
}
在onDoingBackground()方法上调用此方法，然后就可以了。
注意：还要确保已从Properties-＆gt; Java Build Path
导入了javax库修改：我忘记添加提供程序类：
public final class JSSEProvider extends Provider {
public JSSEProvider() {
super("HarmonyJSSE", 1.0, "Harmony JSSE Provider");
AccessController.doPrivileged(new java.security.PrivilegedAction<Void>() {
public Void run() {
put("SSLContext.TLS",
"org.apache.harmony.xnet.provider.jsse.SSLContextImpl");
put("Alg.Alias.SSLContext.TLSv1", "TLS");
put("KeyManagerFactory.X509",
"org.apache.harmony.xnet.provider.jsse.KeyManagerFactoryImpl");
put("TrustManagerFactory.X509",
"org.apache.harmony.xnet.provider.jsse.TrustManagerFactoryImpl");
return null;
}
});
}
}