点击按钮然后自动在android中发送电子邮件

Question

我有一个 xml 文件，用户将在其中输入一封电子邮件，然后当点击提交按钮时，我希望应用程序自动向该电子邮件发送一封包含特定内容的电子邮件..

我可以从 ??? 获得帮助的任何好的教程或示例

 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;
}

 }

日志猫

 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

Answer 1

在我的例子中，我使用了 Java Mail API 和您可以使用的下面的代码。请添加必要的详细信息，例如用户名、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.. 
} 

并编写一个异步任务来发送邮件

    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;
}

}

Answer 2

在按钮的 xml 文件中，定义 android:onClick="SendMail"

当您的按钮被点击时，这将在您的活动中调用SendMail 函数。

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：如果您的EditText 视图的资源ID 是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();
    }
}

这种方法对我有帮助，希望对你也有帮助。