Practical 15
Q1.
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
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"
tools:context=".MainActivity">
<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="16dp">
<TextView
android:id="@+id/textView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Practical 15 - Toast"
android:textStyle="bold"
android:layout_marginBottom="20dp"
android:textSize="20sp"/>
<Button
android:id="@+id/button"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Show Content" />
</LinearLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
MainActivity.java
package com.example.prc15;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
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 showToastButton = findViewById(R.id.button);
showToastButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(MainActivity.this, "Message for you: You have got mail!",
Toast.LENGTH_LONG).show();
}
});
}
}
Q2.
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
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"
tools:context=".MainActivity">
<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="16dp">
<CheckBox
android:id="@+id/checkBox"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textSize="17sp"
android:text="Pizza" />
<CheckBox
android:id="@+id/checkBox2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textSize="17sp"
android:text="Dal Bhatti" />
<CheckBox
android:id="@+id/checkBox3"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textSize="17sp"
android:text="Civet Coffee" />
<Button
android:id="@+id/button"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Order"
android:layout_marginTop="20dp" />
</LinearLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
MainActivity.java
package com.example.prc15;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.Toast;
import androidx.appcompat.app.AppCompatActivity;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
CheckBox pizzaCheckBox = findViewById(R.id.checkBox);
CheckBox coffeeCheckBox = findViewById(R.id.checkBox2);
CheckBox burgerCheckBox = findViewById(R.id.checkBox3);
Button orderButton = findViewById(R.id.button);
orderButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
StringBuilder orderSummary = new StringBuilder("Selected Items:\n");
int total = 0;
if (pizzaCheckBox.isChecked()) {
orderSummary.append("Pizza: ₹300\n");
total += 300;
}
if (coffeeCheckBox.isChecked()) {
orderSummary.append("Dal Bhatti: ₹200\n");
total += 200;
}
if (burgerCheckBox.isChecked()) {
orderSummary.append("Civer Coffee: ₹300\n");
total += 300;
}
orderSummary.append("Total: ").append(total).append("₹");
Toast.makeText(MainActivity.this, orderSummary.toString(),
Toast.LENGTH_LONG).show();
}
});
}
}
