ارسال ایمیل از داخل برنامه اندروید در اندروید استودیو

				
					package com.techblax.techblaxemailsender;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Build;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

import android.widget.EditText;

import com.techblax.techblaxemailsender.util.Appdata;

import java.util.Properties;

import javax.mail.Authenticator;

import javax.mail.Message;

import javax.mail.MessagingException;

import javax.mail.PasswordAuthentication;

import javax.mail.Session;

import javax.mail.Transport;

import javax.mail.internet.InternetAddress;

import javax.mail.internet.MimeMessage;

public class MainActivity extends AppCompatActivity implements View.OnClickListener {

    EditText name_,title_,text_;

    Button btn_send;

    String n_,t_,tt_;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        init_ui();

    }

    private void init_ui() {

        name_ = findViewById(R.id.ed_name);

        title_ = findViewById(R.id.ed_title);

        text_ = findViewById(R.id.ed_text);

        btn_send = findViewById(R.id.btn_send_email);

        btn_send.setOnClickListener(this);

    }

    @Override

    public void onClick(View v) {

        switch (v.getId()){

            case R.id.btn_send_email:

                n_=name_.getText().toString();

                t_=title_.getText().toString();

                tt_=text_.getText().toString();

                send_email(n_,t_,tt_);

                break;

            default:

        }

    }

    private void send_email(String n_, String t_, String tt_) {

        Properties properties = System.getProperties();

        properties.put("mail.smtp.host", Appdata.Gmail_Host);

        properties.put("mail.smtp,port","465");

        properties.put("mail.smtp.ssl.enable","true");

        properties.put("mail.smtp.auth","true");

        Session session = Session.getInstance(properties, new Authenticator() {

            @Override

            protected PasswordAuthentication getPasswordAuthentication() {

                return new PasswordAuthentication(Appdata.Sender_Email_Address,Appdata.Sender_Email_Password);

            }

        });

        MimeMessage message = new MimeMessage(session);

        try {

            message.addRecipient(Message.RecipientType.TO,new InternetAddress(Appdata.Reciver_Email_Address));

            message.setSubject(t_);

            message.setText("From: "+n_+"\n"+"Text: "+tt_);

            Thread thread = new Thread(new Runnable() {

                @Override

                public void run() {

                    try {

                        Transport.send(message);

                    } catch (MessagingException e) {

                        e.printStackTrace();

                    }

                }

            });

            thread.start();

        } catch (MessagingException e) {

            throw new RuntimeException(e);

        }

    }

}