Practical No : - 18

.xml code : -
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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:id="@+id/main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".MainActivity">

<ImageView
android:layout_width="300dp"
android:layout_height="200dp"
android:src="@drawable/img1"
android:layout_gravity="center"
android:layout_marginTop="30dp"/>

<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:hint="Search here"
android:layout_gravity="center"
android:textSize="20dp"
android:id="@+id/e1"
android:layout_marginTop="20dp"/>

<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Search"
android:layout_marginTop="20dp"
android:onClick="fun1"
android:layout_gravity="center"/>
</LinearLayout>
.java code : -

package com.example.engine;

import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;

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

{
EditText e1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
EdgeToEdge.enable(this);
setContentView(R.layout.activity_main);

e1=findViewById(R.id.e1);

public void fun1(View view) {

Intent i1 = new Intent(Intent.ACTION_VIEW, Uri.parse("https://www.google.com"));
startActivity(i1);
}}
Exercise 2 :-
.xml code: -
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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:id="@+id/main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".MainActivity">

<ImageView
android:layout_width="300dp"
android:layout_height="200dp"
 android:layout_gravity="center"
android:layout_marginTop="50dp"
android:src="@drawable/img2"/>

<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="20dp"
android:hint="Enter Number"
android:id="@+id/t1"
android:gravity="center"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Call"
android:textSize="20dp"
android:onClick="fun1"
android:layout_gravity="center"
android:layout_marginTop="30dp"/>

</LinearLayout>

.java code :-
package com.example.searchengine;

import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;

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
{
EditText t1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
EdgeToEdge.enable(this);
setContentView(R.layout.activity_main);
ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main), (v, insets) -> {
Insets systemBars = insets.getInsets(WindowInsetsCompat.Type.systemBars());
v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom);
return insets;
});
t1=findViewById(R.id.t1);

public void fun1(View view)

{
Intent i1=new Intent(Intent.ACTION_VIEW);
String url="tel:"+t1.getText().toString();
i1.setData(Uri.parse(url));
startActivity(i1);

}
}

Output : -
Execise 3 :-

activity_main 1 .xml code

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

<LinearLayout 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:orientation="vertical"
android:gravity="center"
android:padding="20dp">

<EditText
android:id="@+id/e1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="Enter a number"
android:inputType="number"
android:textAlignment="center"
tools:ignore="TouchTargetSizeCheck" />

<Button
android:id="@+id/btn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Find Factorial"
android:layout_marginTop="20dp"/>

</LinearLayout>
activity_main 2 .xml code

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

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:gravity="center"
android:padding="20dp">

<TextView
android:id="@+id/resultText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Factorial will be displayed here"
android:textSize="18sp"
android:textStyle="bold"
android:padding="10dp"/>
</LinearLayout>

activity_main 1 .java code

package com.example.fact;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

import androidx.appcompat.app.AppCompatActivity;

public class MainActivity extends AppCompatActivity {

EditText e1;
Button btn;
 @Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

e1 = findViewById(R.id.e1);
btn = findViewById(R.id.btn);

btn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String input = e1.getText().toString();
if (!input.isEmpty()) {
int num = Integer.parseInt(input);
if (num < 0) {
Toast.makeText(MainActivity.this, "Enter a positive number!",
Toast.LENGTH_SHORT).show();
} else {
// Send the number to SecondActivity
Intent intent = new Intent(MainActivity.this,SecondActivity.class);
intent.putExtra("number", num);
startActivity(intent);
}
} else {
Toast.makeText(MainActivity.this, "Please enter a number!",
Toast.LENGTH_SHORT).show();
}
}
});
}
}
activity_main 2 .java code
package com.example.fact;

import android.content.Intent;
import android.os.Bundle;
import android.widget.TextView;

import androidx.appcompat.app.AppCompatActivity;

public class SecondActivity extends AppCompatActivity {

TextView resultText;

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

resultText = findViewById(R.id.resultText);

// Receive the number from MainActivity

Intent intent = getIntent();
int num = intent.getIntExtra("number", 0);

// Calculate factorial
long factorial = calculateFactorial(num);

// Display the result

resultText.setText("Factorial of " + num + " is: " + factorial);
}

// Method to calculate factorial

public long calculateFactorial(int n) {
long fact = 1;
for (int i = 1; i <= n; i++) {
fact *= i;
}
return fact;
}
}
Output :-