title: Sending email without user Interaction - Android Studio
body: <p>Motivation: I am Creating a Signup Activity and I need to send an Automatic email under Button Click. I have Followed number of Blogs, stackoverflow questions and unable to send an email so-far.</p>
  
  <p><strong>Working Environment:</strong> Android Studio 1.2 Beta 3</p>
  
  <p><strong>Currently Followed Question :</strong><a href="https://stackoverflow.com/questions/2020088/sending-email-in-android-using-javamail-api-without-using-the-default-built-in-a/2033124#2033124">Sending Email in Android using JavaMail API without using the default/built-in app</a></p>
  
  <p><strong>Now Here is What I have Done :</strong></p>
  
  <p>Downloaded three Jar Files</p>
  
  <ol>
  <li>activation.jar</li>
  <li>additional.jar</li>
  <li>mail.jar</li>
  </ol>
  
  <p>Then i copied three jar files in follwoing folder: </p>
  
  <p>G:\Android Projects\Email\app\libs\</p>
  
  <p>After Copying files i found my .jar files by pointing into "Project Explorer" in Android Studio and then changing my tree view from "Android" to "Project"</p>
  
  <p>Then expanding the tree Project > app > libs ></p>
  
  <p><strong>After finding files; on each .jar file I did: Right click -> Add as Library</strong></p>
  
  <p>Once the graddle build was completed I then copied the code from above followed Question and run into my own project. It compiled without any errors.</p>
  
  <p><strong>Now the Problem is :</strong></p>
  
  <p>When i run a program it shows a toast Message "Email was Sent Successfully" but I never receive an email, Nor there is any sent mails in my account.</p>
  
  <p>Here is all my code for all classes and .xml files</p>
  
  <p>MainActivity.java</p>
  
  <pre><code>import android.app.Activity;
  import android.os.Bundle;
  import android.util.Log;
  import android.view.View;
  import android.widget.Button;
  import android.widget.Toast;
  
  public class MainActivity extends Activity {
  
  /** Called when the activity is first created. */
  @Override
  public void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_main);
  
      Button send = (Button)findViewById(R.id.send_email);
      send.setOnClickListener(new View.OnClickListener() {
  
          public void onClick(View v) {
              // TODO Auto-generated method stub
  
              try {
                  GMailSender sender = new     GMailSender("ars@gmail.com", "123abc-123abc");
                  sender.sendMail("ARS",
                          "This is Body HEELO WORLD",
                          "ars@gmail.com",
                          "reciever@gmail.com");
                  Toast.makeText(MainActivity.this, "Email was sent successfully.", Toast.LENGTH_LONG).show();
              } catch (Exception e) {
                  Log.e("SendMail", e.getMessage(), e);
                  Toast.makeText(MainActivity.this, "There was a problem   sending the email.", Toast.LENGTH_LONG).show();
              }
  
          }
      });
  
  }
  }
  </code></pre>
  
  <p>GMailSender.java</p>
  
  <pre><code>package com.example.hassnainmunir.email;
  
  import javax.activation.DataHandler;
  import javax.activation.DataSource;
  import javax.mail.Message;
  import javax.mail.PasswordAuthentication;
  import javax.mail.Session;
  import javax.mail.Transport;
  import javax.mail.internet.InternetAddress;
  import javax.mail.internet.MimeMessage;
  import java.io.ByteArrayInputStream;
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.OutputStream;
  import java.security.Security;
  import java.util.Properties;
  
  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 JSSEProvider());
  }
  
  public GMailSender(String user, String password) {
      this.user = user;
      this.password = password;
  
      Properties props = new Properties();
      props.setProperty("mail.transport.protocol", "smtp");
      props.setProperty("mail.host", mailhost);
      props.put("mail.smtp.auth", "true");
      props.put("mail.smtp.port", "465");
      props.put("mail.smtp.socketFactory.port", "465");
      props.put("mail.smtp.socketFactory.class",
              "javax.net.ssl.SSLSocketFactory");
      props.put("mail.smtp.socketFactory.fallback", "false");
      props.setProperty("mail.smtp.quitwait", "false");
  
      session = Session.getDefaultInstance(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(',') &gt; 0)
              message.setRecipients(Message.RecipientType.TO, InternetAddress.parse(recipients));
          else
              message.setRecipient(Message.RecipientType.TO, new InternetAddress(recipients));
          Transport.send(message);
      }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");
      }
  }
  }
  </code></pre>
  
  <p>JSSEProvider.java</p>
  
  <pre><code>package com.example.hassnainmunir.email;
  
  import java.security.AccessController;
  import java.security.Provider;
  
  public final class JSSEProvider extends Provider {
  
  public JSSEProvider() {
      super("HarmonyJSSE", 1.0, "Harmony JSSE Provider");
      AccessController.doPrivileged(new java.security.PrivilegedAction&lt;Void&gt;() {
          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;
          }
      });
  }
  }
  </code></pre>
  
  <p>activity_main.xml</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:orientation="vertical"
  android:layout_width="fill_parent"
  android:layout_height="fill_parent"
  &gt;
  &lt;Button android:id="@+id/send_email"
      android:layout_width="fill_parent"
      android:layout_height="wrap_content"
      android:text="@string/Send_Email" /&gt;
  &lt;/LinearLayout&gt;
  </code></pre>
  
  <p>AndroidMenifest.xml</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;manifest xmlns:android="http://schemas.android.com/apk/res/android"
  package="com.example.hassnainmunir.email" &gt;
  &lt;uses-permission android:name="android.permission.INTERNET"/&gt;
  
  &lt;application
      android:allowBackup="true"
      android:icon="@mipmap/ic_launcher"
      android:label="@string/app_name"
      android:theme="@style/AppTheme" &gt;
  
      &lt;activity
          android:name=".MainActivity"
          android:label="@string/app_name" &gt;
          &lt;intent-filter&gt;
              &lt;action android:name="android.intent.action.MAIN" /&gt;
  
              &lt;category android:name="android.intent.category.LAUNCHER" /&gt;
          &lt;/intent-filter&gt;
      &lt;/activity&gt;
  &lt;/application&gt;
  &lt;/manifest&gt;
  </code></pre>
  
  <p>Strings.xml</p>
  
  <pre><code>&lt;resources&gt;
  &lt;string name="app_name"&gt;Email&lt;/string&gt;
  
  &lt;string name="hello_world"&gt;Hello world!&lt;/string&gt;
  &lt;string name="action_settings"&gt;Settings&lt;/string&gt;
  &lt;string name="Send_Email"&gt;Send Email&lt;/string&gt;
  &lt;/resources&gt;
  </code></pre>
  
  <p>build.gradle</p>
  
  <pre><code>apply plugin: 'com.android.application'
  
  android {
  compileSdkVersion 21
  buildToolsVersion "22.0.0"
  
  defaultConfig {
      applicationId "com.example.hassnainmunir.email"
      minSdkVersion 14
      targetSdkVersion 21
      versionCode 1
      versionName "1.0"
  }
  buildTypes {
      release {
          minifyEnabled false
          proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
      }
  }
  }
  
  dependencies {
  compile fileTree(dir: 'libs', include: ['*.jar'])
  compile 'com.android.support:appcompat-v7:22.0.0'
  compile files('libs/activation.jar')
  }
  </code></pre>
  
  <p>Can you please Help me in identifying where i am doing Wrong.</p>
  
  <p>Because its been three days i am stuck in there. And unable to receive an email.</p>