rm6

q1.

 <?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <Button
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:text="Send Hello!" />
</RelativeLayout>

 import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import androidx.appcompat.app.AppCompatActivity;

public class MainActivity extends AppCompatActivity {

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

        Button button = findViewById(R.id.button);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                // Create an Intent to start SecondActivity
                Intent intent = new Intent(MainActivity.this, SecondActivity.class);
                // Add extra data (message) to the Intent
                intent.putExtra("message", "Hello!");
                // Start the SecondActivity
                startActivity(intent);
            }
        });
    }
}

 <?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".SecondActivity">

    <TextView
        android:id="@+id/textView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:text="Message will appear here" />
</RelativeLayout>

import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.content.Intent;
import android.widget.TextView;

public class SecondActivity extends AppCompatActivity {

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

        // Retrieve the message from the Intent
        String message = getIntent().getStringExtra("message");

        // Display the message in the TextView
        TextView textView = findViewById(R.id.textView);
        textView.setText(message);
    }
}
 

add this line in manifest_xml after activity tag is closed

 <activity android:name=".SecondActivity"/>

---

q2.

 <?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:padding="16dp"
    tools:context=".MainActivity">

    <ListView
        android:id="@+id/listView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"/>

    <TextView
        android:id="@android:id/text1"
        android:layout_width="395dp"
        android:layout_height="64dp"
        android:padding="16dp"
        android:textAppearance="?android:attr/textAppearanceListItem" />


</RelativeLayout>

 package com.example.listview;

import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;

import androidx.activity.EdgeToEdge;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.graphics.Insets;
import androidx.core.view.ViewCompat;
import androidx.core.view.WindowInsetsCompat;

public class MainActivity extends AppCompatActivity {

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


            String[] items = {"Item 1", "Item 2", "Item 3", "Item 4", "Item 5"};

            // Adapter to populate ListView
            ArrayAdapter<String> adapter = new ArrayAdapter<>(this,
                    android.R.layout.simple_list_item_1, android.R.id.text1, items);

            // ListView setup
            ListView listView = findViewById(R.id.listView);
            listView.setAdapter(adapter);

            // ListView item click listener
            listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
                @Override
                public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                    String selectedItem = (String) parent.getItemAtPosition(position);
                    Toast.makeText(MainActivity.this, selectedItem + " clicked", Toast.LENGTH_SHORT).show();
                }
            });
        }