android邮件发送几种方式

android中发送邮件我大概发现了3种，代码如下

package src.icetest;import org.apache.commons.mail.EmailException;import org.apache.commons.mail.HtmlEmail;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.util.Log;public class IcetestActivity extends Activity {/** Called when the activity is first created. */@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);Log.i("IcetestActivity", "start ice test step 1");// sendMailIntent();//sendMailByApache();sendMailByJavaMail();}// you need config the mail app in your android moble first,and the mail will send by the mail app. and there are one big bug://you can't send the mail Silently and you need to click the send buttonpublic int sendMailByIntent() {String[] reciver = new String[] { "181712000@qq.com" };String[] mySbuject = new String[] { "test" };String myCc = "cc";String mybody = "测试Email Intent";Intent myIntent = new Intent(android.content.Intent.ACTION_SEND);myIntent.setType("plain/text");myIntent.putExtra(android.content.Intent.EXTRA_EMAIL, reciver);myIntent.putExtra(android.content.Intent.EXTRA_CC, myCc);myIntent.putExtra(android.content.Intent.EXTRA_SUBJECT, mySbuject);myIntent.putExtra(android.content.Intent.EXTRA_TEXT, mybody);startActivity(Intent.createChooser(myIntent, "mail test"));return 1;}   /*this method can't be used in android mobile successful,but it can run normally in PC.Because it will cause the java.lang.NoClassDefFoundError: javax.activation.DataHandler errorMay be there are some way to solove it ......there are always javax package not found in android virtual mobile.By the way ,the method use Apache mail jar   */public int sendMailByApache() {try {HtmlEmail email = new HtmlEmail();// 这里是发送服务器的名字email.setHostName("smtp.gmail.com");// 编码集的设置email.setTLS(true);email.setSSL(true);email.setCharset("gbk");// 收件人的邮箱email.addTo("181712000@qq.com");// 发送人的邮箱email.setFrom("wcf0000@gmail.com");// 如果需要认证信息的话，设置认证：用户名-密码。分别为发件人在邮件服务器上的注册名称和密码email.setAuthentication("wcf1000", "00000");email.setSubject("测试Email Apache");// 要发送的信息email.setMsg("测试Email Apache");// 发送email.send();} catch (EmailException e) {// TODO Auto-generated catch blockLog.i("IcetestActivity", e.getMessage());}return 1;}/* * this method use javamail for android ,it is a good jar, * you can see the demo in http://www.jondev.net/articles/Sending_Emails_without_User_Intervention_(no_Intents)_in_Android * and you also need three jars ,which I offered in attachement *  * */public int sendMailByJavaMail() {Mail m = new Mail("wcfXXXX@gmail.com", "XXXXX");m.set_debuggable(true);String[] toArr = {"18170000@qq.com"}; m.set_to(toArr);m.set_from("18170000@qq.com");m.set_subject("This is an email sent using icetest from an Android device");m.setBody("Email body. test by Java Mail");try {//m.addAttachment("/sdcard/filelocation"); if(m.send()) { Log.i("IcetestActivity","Email was sent successfully.");} else {Log.i("IcetestActivity","Email was sent failed.");}} catch (Exception e) {// Toast.makeText(MailApp.this,// "There was a problem sending the email.",// Toast.LENGTH_LONG).show();Log.e("MailApp", "Could not send email", e);}return 1;}}

第一种方法是调用了系统的mail app，你首先要配置系统的mail app，但是这个方法的最大问题是，你运行这个方法后

他并不会默认的发送邮件，而是弹出mail的app界面，你需要手动的点击发送，如图

android邮件发送几种方式

第二种，是调用了apache的common库，在pc上可以正常运行，但是在android虚拟机中会报错java.lang.NoClassDefFoundError: javax.activation.DataHandler error

javax包无法找到，我看了下这个问题还是比较普遍的，大家普遍表示虚拟机是被阉割的版本，javax好像存在不全，这个实际上就无法运行

第三种，实际是javamail有人做了移植，专门为android做了开发，这下就比较好了，网上的demo代码也比较到位，只有一个问题，就是要自己添加一个mail.java，而且对stmp要手动添加。

其实理论上还应该有一种，自己实现smtp服务器，全程采用socket编程，直接与目标服务器交流，这个win下面我写过，但是android下就算了，而且长期来讲面临着smtp服务器以后会被进行方向查询，以提高安全性。

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