Android 使用现有的gmail帐户发送邮件
到目前为止，我已经通过各种论坛，发现我们必须得到令牌发送电子邮件。我尝试过各种方式，但无法向任何人发送邮件。任何人都可以通过发送与此相关的各种链接来帮助我 这是我的Mail.java类Android 使用现有的gmail帐户发送邮件,android,Android,到目前为止，我已经通过各种论坛，发现我们必须得到令牌发送电子邮件。我尝试过各种方式，但无法向任何人发送邮件。任何人都可以通过发送与此相关的各种链接来帮助我 这是我的Mail.java类 package com.mycomp.android.test; import java.util.Properties; import javax.activation.DataHandler; import javax.activation.DataSource; import javax.activat
package com.mycomp.android.test;
import java.util.Properties;
import javax.activation.DataHandler;
import javax.activation.DataSource;
import javax.activation.FileDataSource;
import javax.mail.BodyPart;
import javax.mail.Message;
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;
public class Mail extends javax.mail.Authenticator {
private Multipart attachements;
private String fromAddress = "";
private String accountEmail = "";
private String accountPassword = "";
private String smtpHost = "smtp.gmail.com";
private String smtpPort = "465"; // 465,587
private String toAddresses = "";
private String mailSubject = "";
private String mailBody = "";
public Mail() {
attachements = new MimeMultipart();
}
public Mail(String user, String pass) {
this();
accountEmail = user;
accountPassword = pass;
}
public boolean send() throws Exception {
Properties props = new Properties();
//props.put("mail.smtp.user", d_email);
props.put("mail.smtp.host", smtpHost);
props.put("mail.smtp.port", smtpPort);
props.put("mail.smtp.starttls.enable", "true");
props.put("mail.smtp.debug", "true");
props.put("mail.smtp.auth", "true");
props.put("mail.smtp.socketFactory.port", smtpPort);
props.put("mail.smtp.socketFactory.class",
"javax.net.ssl.SSLSocketFactory");
props.put("mail.smtp.socketFactory.fallback", "false");
try {
Session session = Session.getInstance(props, this);
session.setDebug(true);
MimeMessage msg = new MimeMessage(session);
// create the message part
MimeBodyPart messageBodyPart = new MimeBodyPart();
//fill message
messageBodyPart.setText(mailBody);
// add to multipart
attachements.addBodyPart(messageBodyPart);
//msg.setText(mailBody);
msg.setSubject(mailSubject);
msg.setFrom(new InternetAddress(fromAddress));
msg.addRecipients(Message.RecipientType.TO,
InternetAddress.parse(toAddresses));
msg.setContent(attachements);
Transport transport = session.getTransport("smtps");
transport.connect(smtpHost, 465, accountEmail, accountPassword);
transport.sendMessage(msg, msg.getAllRecipients());
transport.close();
return true;
} catch (Exception e) {
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");
attachements.addBodyPart(messageBodyPart);
}
@Override
public PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(accountEmail, accountPassword);
}
/**
* Gets the fromAddress.
*
* @return <tt> the fromAddress.</tt>
*/
public String getFromAddress() {
return fromAddress;
}
/**
* Sets the fromAddress.
*
* @param fromAddress <tt> the fromAddress to set.</tt>
*/
public void setFromAddress(String fromAddress) {
this.fromAddress = fromAddress;
}
/**
* Gets the toAddresses.
*
* @return <tt> the toAddresses.</tt>
*/
public String getToAddresses() {
return toAddresses;
}
/**
* Sets the toAddresses.
*
* @param toAddresses <tt> the toAddresses to set.</tt>
*/
public void setToAddresses(String toAddresses) {
this.toAddresses = toAddresses;
}
/**
* Gets the mailSubject.
*
* @return <tt> the mailSubject.</tt>
*/
public String getMailSubject() {
return mailSubject;
}
/**
* Sets the mailSubject.
*
* @param mailSubject <tt> the mailSubject to set.</tt>
*/
public void setMailSubject(String mailSubject) {
this.mailSubject = mailSubject;
}
/**
* Gets the mailBody.
*
* @return <tt> the mailBody.</tt>
*/
public String getMailBody() {
return mailBody;
}
/**
* Sets the mailBody.
*
* @param mailBody <tt> the mailBody to set.</tt>
*/
public void setMailBody(String mailBody) {
this.mailBody = mailBody;
}
}
package com.mycomp.android.test;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.regex.Pattern;
import android.accounts.Account;
import android.accounts.AccountManager;
import android.app.Activity;
import android.app.ProgressDialog;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.StrictMode;
import android.util.Log;
import android.util.Patterns;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
public class MailSenderActivity extends Activity {
AccountManager am = AccountManager.get(this); // "this" references the current Context
Pattern emailPattern = Patterns.EMAIL_ADDRESS;
Account[] accounts = am.getAccountsByType("com.google");
private static final String GMAIL_EMAIL_ID = "From Email Address";
private static final String GMAIL_ACCOUNT_PASSWORD = "password";
private static final String TO_ADDRESSES = "To Email Address";
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder()
.permitAll().build();
StrictMode.setThreadPolicy(policy);
writeFile();
final Button send = (Button) this.findViewById(R.id.send);
send.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
new MailSenderActivity.MailSender().execute();
}
});
}
private File imageFile;
private boolean writeFile() {
imageFile = new File(
getApplicationContext().getFilesDir() + "/images/",
"sample.png");
String savePath = imageFile.getAbsolutePath();
System.out.println("savePath :" + savePath + ":");
FileOutputStream fileOutputStream = null;
try {
fileOutputStream = new FileOutputStream(savePath, false);
} catch (FileNotFoundException ex) {
String parentName = new File(savePath).getParent();
if (parentName != null) {
File parentDir = new File(parentName);
if ((!(parentDir.exists())) && (parentDir.mkdirs()))
try {
fileOutputStream = new FileOutputStream(savePath, false);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
}
}
// here i am using a png from drawable resources as attachment. You can use your own image byteArray while sending mail.
Bitmap bitmap = BitmapFactory.decodeResource(
MailSenderActivity.this.getResources(), R.drawable.english);
ByteArrayOutputStream stream = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.PNG, 100, stream);
byte[] imgBuffer = stream.toByteArray();
boolean result = true;
try {
fileOutputStream.write(imgBuffer);
fileOutputStream.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
result = false;
} catch (IOException e2) {
e2.printStackTrace();
result = false;
} finally {
if (fileOutputStream != null) {
try {
fileOutputStream.close();
} catch (IOException e) {
e.printStackTrace();
result = false;
}
}
}
return result;
}
class MailSender extends AsyncTask<Void, Integer, Integer> {
ProgressDialog pd = null;
/*
* (non-Javadoc)
*
* @see android.os.AsyncTask#onPreExecute()
*/
@Override
protected void onPreExecute() {
// TODO Auto-generated method stub
super.onPreExecute();
pd = new ProgressDialog(MailSenderActivity.this);
pd.setTitle("Uploading...");
pd.setMessage("Uploading image. Please wait...");
pd.setCancelable(false);
pd.show();
}
/*
* (non-Javadoc)
*
* @see android.os.AsyncTask#doInBackground(Params[])
*/
@Override
protected Integer doInBackground(Void... params) {
Mail m = new Mail(GMAIL_EMAIL_ID, GMAIL_ACCOUNT_PASSWORD);
String toAddresses = TO_ADDRESSES;
m.setToAddresses(toAddresses);
m.setFromAddress(GMAIL_EMAIL_ID);
m.setMailSubject("This is an email sent using my Mail JavaMail wrapper from an Android device.");
m.setMailBody("Email body.");
// try {
// ZipUtility.zipDirectory(new File("/mnt/sdcard/images"),
// new File("/mnt/sdcard/logs.zip"));
// } catch (IOException e1) {
// Log.e("MailApp", "Could not zip folder", e1);
// }
try {
String path = imageFile.getAbsolutePath();
System.out.println("sending path:" + path + ":");
m.addAttachment(path);
// m.addAttachment("/mnt/sdcard/logs.zip");
if (m.send()) {
System.out.println("Message sent");
return 1;
} else {
return 2;
}
} catch (Exception e) {
Log.e("MailApp", "Could not send email", e);
}
return 3;
}
/*
* (non-Javadoc)
*
* @see android.os.AsyncTask#onPostExecute(java.lang.Object)
*/
@Override
protected void onPostExecute(Integer result) {
// TODO Auto-generated method stub
super.onPostExecute(result);
pd.dismiss();
if (result == 1)
Toast.makeText(MailSenderActivity.this,
"Email was sent successfully.", Toast.LENGTH_LONG)
.show();
else if (result == 2)
Toast.makeText(MailSenderActivity.this, "Email was not sent.",
Toast.LENGTH_LONG).show();
else if (result == 3)
Toast.makeText(MailSenderActivity.this,
"There was a problem sending the email.",
Toast.LENGTH_LONG).show();
}
}
}
package com.mycop.android.test；
导入java.util.Properties；
导入javax.activation.DataHandler；
导入javax.activation.DataSource；
导入javax.activation.FileDataSource；
导入javax.mail.BodyPart；
导入javax.mail.Message；
导入javax.mail.Multipart；
导入javax.mail.PasswordAuthentication；
导入javax.mail.Session；
导入javax.mail.Transport；
导入javax.mail.internet.InternetAddress；
导入javax.mail.internet.MimeBodyPart；
导入javax.mail.internet.mimessage；
导入javax.mail.internet.MimeMultipart；
公共类邮件扩展了javax.Mail.Authenticator{
私人多部分附件；
私有字符串fromAddress=“”；
私人字符串accountEmail=“”；
私有字符串accountPassword=“”；
私有字符串smtpHost=“smtp.gmail.com”；
私有字符串smtpPort=“465”//465587
私有字符串toaddress=“”；
私有字符串mailSubject=“”；
私有字符串mailBody=“”；
公共邮件（）{
attachements=新的MimeMultipart（）；
}
公共邮件（字符串用户、字符串传递）{
这个（）；
accountEmail=用户；
accountPassword=通过；
}
public boolean send（）引发异常{
Properties props=新属性（）；
//props.put（“mail.smtp.user”，d_email）；
props.put（“mail.smtp.host”，smtpHost）；
props.put（“mail.smtp.port”，smtpPort）；
props.put（“mail.smtp.starttls.enable”、“true”）；
props.put（“mail.smtp.debug”，“true”）；
props.put（“mail.smtp.auth”，“true”）；
props.put（“mail.smtp.socketFactory.port”，smtpPort）；
props.put（“mail.smtp.socketFactory.class”，
“javax.net.ssl.SSLSocketFactory”）；
props.put（“mail.smtp.socketFactory.fallback”、“false”）；
试一试{
Session Session=Session.getInstance（props，this）；
session.setDebug（true）；
MimeMessage msg=新MimeMessage（会话）；
//创建消息部分
MimeBodyPart messageBodyPart=新的MimeBodyPart（）；
//填充消息
messageBodyPart.setText（邮件正文）；
//添加到多部分
附件.addBodyPart（messageBodyPart）；
//msg.setText（邮件正文）；
msg.setSubject（邮件主题）；
msg.setFrom（新的InternetAddress（fromAddress））；
msg.addRecipients（Message.RecipientType.TO，
解析（toaddress））；
msg.setContent（附件）；
传输=session.getTransport（“smtps”）；
传输连接（smtpHost，465，accountEmail，accountPassword）；
transport.sendMessage（msg，msg.getAllRecipients（））；
transport.close（）；
返回true；
}捕获（例外e）{
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”）；
附件.addBodyPart（messageBodyPart）；
}
@凌驾
公共密码身份验证getPasswordAuthentication（）{
返回新密码验证（accountEmail、accountPassword）；
}
/**
*获取发件人地址。
*
*@返回发件人地址。
*/
公共字符串getFromAddress（）{
从地址返回；
}
/**
*设置发件人地址。
*
*@param fromAddress要设置的fromAddress。
*/
公共void setFromAddress（字符串fromAddress）{
this.fromAddress=fromAddress；
}
/**
*获取ToAddress。
*
*@返回toaddress。
*/
公共字符串getToAddresses（）{
返回地址；
}
/**
*设置ToAddress。
*
*@param toaddress用于设置toaddress。
*/
public void settoaddress（字符串toaddress）{
this.toaddress=toaddress；
}
/**
*获取邮件主题。
*
*@返回邮件主题。
*/
公共字符串getMailSubject（）{
返回邮件主题；
}
/**
*设置邮件主题。
*
*@param mailSubject要设置的mailSubject。
*/
public void setMailSubject（字符串mailSubject）{
this.mailSubject=mailSubject；
}
/**
*获取邮件正文。
*
*@返回邮件正文。
*/
公共字符串getMailBody（）{
返回邮件体；
}
/**
*设置邮件正文。
*
*@param mailBody要设置的mailBody。
*/
公共void setMailBody（字符串mailBody）{
this.mailBody=mailBody；
}
}
package com.mycomp.android.test;
import java.util.Properties;
import javax.activation.DataHandler;
import javax.activation.DataSource;
import javax.activation.FileDataSource;
import javax.mail.BodyPart;
import javax.mail.Message;
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;
public class Mail extends javax.mail.Authenticator {
private Multipart attachements;
private String fromAddress = "";
private String accountEmail = "";
private String accountPassword = "";
private String smtpHost = "smtp.gmail.com";
private String smtpPort = "465"; // 465,587
private String toAddresses = "";
private String mailSubject = "";
private String mailBody = "";
public Mail() {
attachements = new MimeMultipart();
}
public Mail(String user, String pass) {
this();
accountEmail = user;
accountPassword = pass;
}
public boolean send() throws Exception {
Properties props = new Properties();
//props.put("mail.smtp.user", d_email);
props.put("mail.smtp.host", smtpHost);
props.put("mail.smtp.port", smtpPort);
props.put("mail.smtp.starttls.enable", "true");
props.put("mail.smtp.debug", "true");
props.put("mail.smtp.auth", "true");
props.put("mail.smtp.socketFactory.port", smtpPort);
props.put("mail.smtp.socketFactory.class",
"javax.net.ssl.SSLSocketFactory");
props.put("mail.smtp.socketFactory.fallback", "false");
try {
Session session = Session.getInstance(props, this);
session.setDebug(true);
MimeMessage msg = new MimeMessage(session);
// create the message part
MimeBodyPart messageBodyPart = new MimeBodyPart();
//fill message
messageBodyPart.setText(mailBody);
// add to multipart
attachements.addBodyPart(messageBodyPart);
//msg.setText(mailBody);
msg.setSubject(mailSubject);
msg.setFrom(new InternetAddress(fromAddress));
msg.addRecipients(Message.RecipientType.TO,
InternetAddress.parse(toAddresses));
msg.setContent(attachements);
Transport transport = session.getTransport("smtps");
transport.connect(smtpHost, 465, accountEmail, accountPassword);
transport.sendMessage(msg, msg.getAllRecipients());
transport.close();
return true;
} catch (Exception e) {
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");
attachements.addBodyPart(messageBodyPart);
}
@Override
public PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(accountEmail, accountPassword);
}
/**
* Gets the fromAddress.
*
* @return <tt> the fromAddress.</tt>
*/
public String getFromAddress() {
return fromAddress;
}
/**
* Sets the fromAddress.
*
* @param fromAddress <tt> the fromAddress to set.</tt>
*/
public void setFromAddress(String fromAddress) {
this.fromAddress = fromAddress;
}
/**
* Gets the toAddresses.
*
* @return <tt> the toAddresses.</tt>
*/
public String getToAddresses() {
return toAddresses;
}
/**
* Sets the toAddresses.
*
* @param toAddresses <tt> the toAddresses to set.</tt>
*/
public void setToAddresses(String toAddresses) {
this.toAddresses = toAddresses;
}
/**
* Gets the mailSubject.
*
* @return <tt> the mailSubject.</tt>
*/
public String getMailSubject() {
return mailSubject;
}
/**
* Sets the mailSubject.
*
* @param mailSubject <tt> the mailSubject to set.</tt>
*/
public void setMailSubject(String mailSubject) {
this.mailSubject = mailSubject;
}
/**
* Gets the mailBody.
*
* @return <tt> the mailBody.</tt>
*/
public String getMailBody() {
return mailBody;
}
/**
* Sets the mailBody.
*
* @param mailBody <tt> the mailBody to set.</tt>
*/
public void setMailBody(String mailBody) {
this.mailBody = mailBody;
}
}
package com.mycomp.android.test;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.regex.Pattern;
import android.accounts.Account;
import android.accounts.AccountManager;
import android.app.Activity;
import android.app.ProgressDialog;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.StrictMode;
import android.util.Log;
import android.util.Patterns;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
public class MailSenderActivity extends Activity {
AccountManager am = AccountManager.get(this); // "this" references the current Context
Pattern emailPattern = Patterns.EMAIL_ADDRESS;
Account[] accounts = am.getAccountsByType("com.google");
private static final String GMAIL_EMAIL_ID = "From Email Address";
private static final String GMAIL_ACCOUNT_PASSWORD = "password";
private static final String TO_ADDRESSES = "To Email Address";
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder()
.permitAll().build();
StrictMode.setThreadPolicy(policy);
writeFile();
final Button send = (Button) this.findViewById(R.id.send);
send.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
new MailSenderActivity.MailSender().execute();
}
});
}
private File imageFile;
private boolean writeFile() {
imageFile = new File(
getApplicationContext().getFilesDir() + "/images/",
"sample.png");
String savePath = imageFile.getAbsolutePath();
System.out.println("savePath :" + savePath + ":");
FileOutputStream fileOutputStream = null;
try {
fileOutputStream = new FileOutputStream(savePath, false);
} catch (FileNotFoundException ex) {
String parentName = new File(savePath).getParent();
if (parentName != null) {
File parentDir = new File(parentName);
if ((!(parentDir.exists())) && (parentDir.mkdirs()))
try {
fileOutputStream = new FileOutputStream(savePath, false);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
}
}
// here i am using a png from drawable resources as attachment. You can use your own image byteArray while sending mail.
Bitmap bitmap = BitmapFactory.decodeResource(
MailSenderActivity.this.getResources(), R.drawable.english);
ByteArrayOutputStream stream = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.PNG, 100, stream);
byte[] imgBuffer = stream.toByteArray();
boolean result = true;
try {
fileOutputStream.write(imgBuffer);
fileOutputStream.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
result = false;
} catch (IOException e2) {
e2.printStackTrace();
result = false;
} finally {
if (fileOutputStream != null) {
try {
fileOutputStream.close();
} catch (IOException e) {
e.printStackTrace();
result = false;
}
}
}
return result;
}
class MailSender extends AsyncTask<Void, Integer, Integer> {
ProgressDialog pd = null;
/*
* (non-Javadoc)
*
* @see android.os.AsyncTask#onPreExecute()
*/
@Override
protected void onPreExecute() {
// TODO Auto-generated method stub
super.onPreExecute();
pd = new ProgressDialog(MailSenderActivity.this);
pd.setTitle("Uploading...");
pd.setMessage("Uploading image. Please wait...");
pd.setCancelable(false);
pd.show();
}
/*
* (non-Javadoc)
*
* @see android.os.AsyncTask#doInBackground(Params[])
*/
@Override
protected Integer doInBackground(Void... params) {
Mail m = new Mail(GMAIL_EMAIL_ID, GMAIL_ACCOUNT_PASSWORD);
String toAddresses = TO_ADDRESSES;
m.setToAddresses(toAddresses);
m.setFromAddress(GMAIL_EMAIL_ID);
m.setMailSubject("This is an email sent using my Mail JavaMail wrapper from an Android device.");
m.setMailBody("Email body.");
// try {
// ZipUtility.zipDirectory(new File("/mnt/sdcard/images"),
// new File("/mnt/sdcard/logs.zip"));
// } catch (IOException e1) {
// Log.e("MailApp", "Could not zip folder", e1);
// }
try {
String path = imageFile.getAbsolutePath();
System.out.println("sending path:" + path + ":");
m.addAttachment(path);
// m.addAttachment("/mnt/sdcard/logs.zip");
if (m.send()) {
System.out.println("Message sent");
return 1;
} else {
return 2;
}
} catch (Exception e) {
Log.e("MailApp", "Could not send email", e);
}
return 3;
}
/*
* (non-Javadoc)
*
* @see android.os.AsyncTask#onPostExecute(java.lang.Object)
*/
@Override
protected void onPostExecute(Integer result) {
// TODO Auto-generated method stub
super.onPostExecute(result);
pd.dismiss();
if (result == 1)
Toast.makeText(MailSenderActivity.this,
"Email was sent successfully.", Toast.LENGTH_LONG)
.show();
else if (result == 2)
Toast.makeText(MailSenderActivity.this, "Email was not sent.",
Toast.LENGTH_LONG).show();
else if (result == 3)
Toast.makeText(MailSenderActivity.this,
"There was a problem sending the email.",
Toast.LENGTH_LONG).show();
}
}
}
package com.mycop.android.test；
导入java.io.ByteArrayOutputStream；
导入java.io.File；
导入java.io.FileNotFoundException；
导入java.io.FileOutputStream；
导入java.io.IOException；
导入java.util.regex.Pattern；
导入android.accounts.Account；
导入android.accounts.AccountManager；
导入android.app.Activity；
导入android.app.ProgressDialog；
导入android.graphics.Bitmap；
导入android.graphics.BitmapFactory；
导入android.os.AsyncTask；
导入android.os.Bundle；
导入android.os.StrictMode；
导入android.util.Log；
导入android.util.Patterns；
导入android.view.view；
导入android.widget.Button；
导入android.widget.Toast；
公共类MailSenderActivity扩展活动{
AccountManager am=AccountManager.get（this）；/“this”引用当前上下文
Pattern emailPattern=Patterns.EMAIL\u地址；
Account[]accounts=am.getAccountsByType（“com.google”）；
私有静态最终字符串GMAIL\u EMAIL\u ID=“来自电子邮件地址”；
私有静态最终字符串GMAIL\u ACCOUNT\u PASSWORD=“PASSWORD”；
私有静态最终字符串至_ADDRESSES=“至电子邮件地址”；
/**在首次创建活动时调用*/
@凌驾
创建时的公共void（Bundle savedInstanceState）{
super.onCreate（savedInstanceState）；
设置