2024-S2-IT2010-Lecture-01-Introduction.pdf

Mobile Application Development Mobile Application Development Introduction to App Development Faculty of Computing Mobile Appl...

Mobile Application Development Mobile Application Development Introduction to App Development Faculty of Computing Mobile Application Development Introduction to the module Student Centered Learning module Module Code: IT2010 Credit Value: 4 Method of Delivery Lectures – 1 hour/week Tutorials (practical) – 2 hours/week Labs - 2 hours/week Courseweb Enrollment Key: IT2010 2 Faculty of Computing Mobile Application Development Lecture Plan Introduction to App Development Mobile Platforms and Application Development fundamentals Mobile Interface Design Concepts and UI/UX Design Introduction to Android Operating System​ Main Components of Android Application​ Sensors and Media Handling in Android Applications Data Handling in Android Applications Android Application Testing and security aspects 3 Faculty of Computing Mobile Application Development Assessment Criteria Assessment Weight (%) Midterm (MCQ) 20 LAB Exam 1 10 LAB Exam 2 10 LAB Exam 3 10 Final Exam 50 4 Faculty of Computing Mobile Application Development Lecturer Panel Lecturer in-charge of the module Mr. Nelum Chathuranga Amarasena([email protected] | 0719096100) Metro Ms. Rivoni De Zoyza ([email protected] ) Matara Ms. Suriyaa Kumari ([email protected]) Kandy Ms. Gihani Gunarathna ([email protected]) Jaffna Mr. Rajan Bala ([email protected]) 5 Faculty of Computing Mobile Application Development Learning Outcomes of the Lecture At the end of this Lecture students will be able to: Understand the fundamentals of mobile Application Development Explain different mobile platforms and related technologies. Code a simple program in Kotlin 6 Faculty of Computing Mobile Application Development Why a Mobile App? Mobile phones are no longer the ordinary communication device. It has various incredible features and opportunities offered to the users. The number of smartphone users is growing up day by day. (In 2020, it’s 3.5 billions) Business organizations are more like to have mobile applications for their business instead of investing in a mobile friendly version of their websites. Good mobile application will add value to the business. 7 Faculty of Computing Mobile Application Development Smartphone users' growth around the world Reference: https://www.statista.com/statistics/330695/number-of-smartphone-users-worldwide/ 8 Faculty of Computing Mobile Application Development Mobile Application Development Mobile application development refers to the creation of apps for use on devices such as tablets, smartphones, automobiles and watches. Mobile development often incorporates features of mobile devices that may not be available on desktop devices. An example of this is the ability to operate a device or play a game simply by moving the smartphone around in space. 9 Faculty of Computing Mobile Application Development Key Features of Mobile Applications Great UI (User Interface) Fast loading time and high performance Extremely helpful user support Adapts to a user’s needs Compatible with a mobile platform 10 Faculty of Computing Mobile Application Development Reasons for Mobile App failures The app doesn’t have a market The app does not have adequate security The app does not perform quickly enough The app does not fully consider UX/UI The app’s listing in the marketplace is not persuasive Hard to adjust web version to the smartphone screen Due to limited functions 11 Faculty of Computing Mobile Application Development Android – Android Studio Mobile app iOS – Xcode development platforms HarmonyOS – DevEco Studio Cross Platform – Flutter, React Native, Xamarin Faculty of Computing Mobile Application Development Android Studio Android Studio is the official integrated development environment (IDE) for Google's Android operating system, built on JetBrains' IntelliJ IDEA software and designed specifically for Android development. It is a replacement for the Eclipse Android Development Tools (E-ADT) as the primary IDE for native Android application development. Android Studio was announced on May 16, 2013, at the Google I/O conference. At the end of 2015, Google dropped support for Eclipse ADT, making Android Studio the only officially supported IDE for Android development. On May 7, 2019, Kotlin replaced Java as Google's preferred language for Android app development. Java is still supported, as is C++. Faculty of Computing Mobile Application Development Kotlin Modern, concise and safe programming language Easy to pick up, so you can create powerful applications immediately. https://kotlinlang.org/ Faculty of Computing Mobile Application Development Why is Android development Kotlin-first? Expressive and concise: You can do more with less. Express your ideas and reduce the amount of boilerplate code. 67% of professional developers who use Kotlin say Kotlin has increased their productivity. Safer code: Kotlin has many language features to help you avoid common programming mistakes such as null pointer exceptions. Android apps that contain Kotlin code are 20% less likely to crash. Interoperable: Call Java-based code from Kotlin or call Kotlin from Java-based code. Kotlin is 100% interoperable with the Java programming language, so you can have as little or as much of Kotlin in your project as you want. Structured Concurrency: Kotlin coroutines make asynchronous code as easy to work with as blocking code. Coroutines dramatically simplify background task management for everything from network calls to accessing local data. Faculty of Computing Mobile Application Development Things you should know about Kotlin Variable Declaration Type inference Null Safety Conditionals Functions Classes Asynchronous code Faculty of Computing Mobile Application Development Kotlin: Variable Declaration Use ‘val’ for a variable whose value never changes. You can't reassign a value to a variable that was declared using val. Use var for a variable whose value can change. Faculty of Computing Mobile Application Development Type Inference the Kotlin compiler can infer the type based on the type of the assigned value. Faculty of Computing Mobile Application Development Null Safety In some languages, a reference type variable can be declared without providing an initial explicit value. In these cases, the variables usually contain a null value. Kotlin variables can't hold null values by default. This means that the following snippet is invalid: For a variable to hold a null value, it must be of a nullable type. You can specify a variable as being nullable by suffixing its type with ?, as shown in the following example: Faculty of Computing Mobile Application Development The tutorial sessions will Thank you! include more Kotlin programming exercises. Faculty of Computing