DCA3201 MOBILE APPLICATION DEVELOPMENT

Description

SESSION	JANUARY/FEBRUARY 2026
PROGRAM	BACHELOR OF COMPUTER APPLICATIONS (BCA)
SEMESTER	VI
COURSE CODE & NAME	DCA3201 MOBILE APPLICATION DEVELOPMENT

 

 

Assignment Set – 1

 

 

Q.1. Draw the android architecture diagram with functions of each layer. (5+5 = 10 Marks)

Ans 1.

Android Architecture Overview

Android is an open source mobile operating system based on an altered version of Linux kernel. Its architecture is organized as the stack of layers, with each layer providing particular services and abstractions for each layer over it. The design allows for modularity, making it easier developers to develop applications without the need to handle hardware-specific information. The Android architecture consists of five primary layers which are laid out starting from the bottom and ending

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Q.2. a) How would you create an empty project in Android Studio. Enlist the major steps. b) Describe about the function of .java and .xml files in an Android project? (5+5 = 10 Marks)

Ans 2.

1. a) Creating an Empty Project in Android Studio

Android Studio is the official Integrated Development Environment for Android application development. Making a brand new project with Android Studio follows a structured wizard-based process that sets up the necessary files and settings automatically.

The first step is to launch Android Studio and on the Welcome screen, select New Project. It will open the creation wizard. In the second step, an array of template templates will be displayed. Select Empty Activity and click Next to proceed with the basic project structure which is comprised of only the fundamental template and the activity files. It does not contain any

 

Q.3. Describe Dalvik Virtual Machine and Android Run Time (ART). (5+5 = 10 Marks)

Ans 3.

Dalvik Virtual Machine (DVM)

Dalvik Virtual Machine Dalvik Virtual Machine was the initial process virtual machine in Android starting with its release through Android 4.4 KitKat. It was specifically designed and optimized for mobile devices with limited resources including limited battery, processor, memory and memory compared to desktop or server environments. Dalvik was named after a fishing village located

Assignment Set – 2

 

Q.4. Explain the role of LoaderManager.LoaderCallbacks in managing Cursor Loaders and the significance of its methods in the Android Loader framework. (5+5 = 10 Marks)

Ans 4.

Role of LoaderManager.LoaderCallbacks

The Android Loader framework was introduced in Android 3.0 Honeycomb to provide a well-defined and a lifecycle-aware system for loading data at asynchronously within Activities and fragment components. Before Loaders, developers had to manage background threads manually by using AsyncTask or

 

Q.5. Discuss how Broadcast Receivers work in Android and provide an example scenario where they might be useful. (5+5 = 10 Marks)

Ans 5.

How Broadcast Receivers Work in Android

A Broadcast Receiver is one of four core elements of application on Android along with Activities, Services, as well as Content Providers. It allows an application take in and respond to broadcasts from the Android system or from other apps. Broadcasts are messages broadcast asynchronously across the Android system in order to inform interested applications of events or modifications

 

Q.6. Discuss the various CRUD operations available in SQLite database. Explain them with the help of suitable example. (5+5 = 10 Marks)

Ans 6.

CRUD Operations in SQLite Database

SQLite is a lightweight, self-contained, serverless relational database engine that is built in the Android operating system. It comes with a full-featured SQL database that is employed by Android applications to save structured data persistently on the device. “CRUD” stands for Create, Read, Update and Delete. They are the four most important processes for managing data within any database system. Android comes with the SQLiteDatabase class as well the