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.
Working Environment: Android Studio 1.2 Beta 3
Currently Followed Question :Sending Email in Android using JavaMail API without using the default/built-in app
Now Here is What I have Done :
Downloaded three Jar Files
- activation.jar
- additional.jar
- mail.jar
Then i copied three jar files in follwoing folder:
G:\Android Projects\Email\app\libs\
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"
Then expanding the tree Project > app > libs >
After finding files; on each .jar file I did: Right click -> Add as Library
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.
Now the Problem is :
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.
Here is all my code for all classes and .xml files
MainActivity.java
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();
            }
        }
    });
}
}
GMailSender.java
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(',') > 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");
    }
}
}
JSSEProvider.java
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<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;
        }
    });
}
}
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<Button android:id="@+id/send_email"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="@string/Send_Email" />
</LinearLayout>
AndroidMenifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.hassnainmunir.email" >
<uses-permission android:name="android.permission.INTERNET"/>
<application
    android:allowBackup="true"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <activity
        android:name=".MainActivity"
        android:label="@string/app_name" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
</application>
</manifest>
Strings.xml
<resources>
<string name="app_name">Email</string>
<string name="hello_world">Hello world!</string>
<string name="action_settings">Settings</string>
<string name="Send_Email">Send Email</string>
</resources>
build.gradle
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')
}
Can you please Help me in identifying where i am doing Wrong.
Because its been three days i am stuck in there. And unable to receive an email.
 
     
     
     
    