package com.example.twoactivities;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import androidx.appcompat.app.AppCompatActivity;

public class MainActivity extends Activity {
    // define the variable
    Button send_button;
    EditText send_text;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        send_button = findViewById(R.id.send_button_id);
        send_text = findViewById(R.id.send_text_id);

        // add the OnClickListener in sender button after clicked this button following Instruction will run
        send_button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                // get the value which input by user in EditText and convert it to string
                String str = send_text.getText().toString();
                // Create the Intent object of this class Context() to Second_activity class
                Intent intent = new Intent(MainActivity.this.getApplicationContext(), SecondActivity.class);
                // now by putExtra method put the value in key, value pair key is
                // message_key by this key we will receive the value, and put the string
                intent.putExtra("message_key", str);
                // start the Intent
                MainActivity.this.startActivity(intent);
            }
        });
    }
}