Slip 1 - C) Create a Simple Application Which Send ―Hello‖ message from one activity to another with help of Button (Use Intent).

Solution:

XML FILE FIRST ACTIVITY

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout

xmlns:android="http://schemas.android.com/apk/res/android"

xmlns:app="http://schemas.android.com/apk/res-auto"

xmlns:tools="http://schemas.android.com/tools"

android:layout_width="match_parent"

android:layout_height="match_parent">

<EditText

android:id="@+id/send_text_id"

android:layout_width="300dp"

android:layout_height="wrap_content"

android:textSize="25dp"

android:hint="Input"

android:textStyle="bold"

android:layout_marginTop="20dp"

android:layout_marginLeft="40dp"/>

<Button

android:id="@+id/send_button_id"

android:layout_width="wrap_content"

android:layout_height="40dp"

android:text="send"

android:textStyle="bold"

android:layout_marginTop="150dp"

android:layout_marginLeft="150dp"/>

</RelativeLayout>

JAVA FILE FIRST ACTIVITY

package com.example.slip11;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;

import android.content.Intent;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

import android.widget.EditText;

public class MainActivity extends AppCompatActivity {

Button send_button;

EditText send_text;

@Override

protected void onCreate(Bundle savedInstanceState)

{

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

send_button = (Button)findViewById(R.id.send_button_id);

send_text = (EditText)findViewById(R.id.send_text_id);

send_button.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v)

{

String str = send_text.getText().toString();

Intent intent = new Intent(getApplicationContext(),

Secndactivity.class);

intent.putExtra("message_key", str);

startActivity(intent);

}

});

}

}

XML FILE SECOND ACTIVITY

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

xmlns:app="http://schemas.android.com/apk/res-auto"

xmlns:tools="http://schemas.android.com/tools"

android:layout_width="match_parent"

android:layout_height="match_parent">

<TextView

android:id="@+id/received_value_id"

android:layout_width="300dp"

android:layout_height="50dp"

android:textStyle="bold"

android:textSize="40dp"

android:layout_marginTop="20dp"

android:layout_marginLeft="40dp"/>

</RelativeLayout>

JAVA FILE SECOND ACTIVITY

package com.example.slip11;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;

import android.os.Bundle;

import android.widget.TextView;

public class Secndactivity extends AppCompatActivity {

TextView receiver_msg;

@Override

protected void onCreate(Bundle savedInstanceState)

{

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

receiver_msg = (TextView)findViewById(R.id.received_value_id);

Intent intent = getIntent();

String str = intent.getStringExtra("message_key");

receiver_msg.setText(str);

}

}