EESTEC Android Workshop 1
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This document outlines a workshop led by Antonis Kalipetis on Android development, focusing on the fundamentals of object-oriented programming and Java. Participants will learn to set up Android Studio, create simple applications, and understand the Android platform's key components and lifecycle. The workshop aims to provide general knowledge rather than instant expertise in mobile programming.
![public class HelloWorldJava {
public static void main(String[] args) {
System.out.prinln("Hello, World!”);
}
}](https://image.slidesharecdn.com/eestecandroidws1-140121152927-phpapp02/85/EESTEC-Android-Workshop-1-17-320.jpg)
EESTEC Android Workshop 1
- 1. ANTONIS KALIPETIS - MOBILE LEAD, SOURCELAIR AKALIPETIS@SOURCELAIR.COM, @AKALIPETIS ANDROID WORKSHOP 1
- 2. W H AT T H E S E WORKSHOPS ARE NOT FOR • Being a pro in two weeks ! • Learning without trying ! • Knowing everything out there
- 3. W H AT W E A R E G O I N G T O L E A R N • General knowledge of the platform • Simple application creation • Learn how to search
- 4. GOOGLE IS YOUR FRIEND A N D S TA C K O V E R F L O W T O O !
- 5. AGENDA • Intro to OOP and Java • Intro to the Android Platform • Setting up Android Studio • Running a simple application • Creating a simple layout
- 6. OBJECT ORIENTED PROGRAMMING WHY U ROCK SO HARD?
- 7. • Code decoupling, enforces code reusability • Associates data structures with their related methods • Makes real-world object representation easier
- 8. L E T ’ S S A Y I T ’ S A B L U E P R I N T, I T ’ S A W A Y T O R E P R E S E N T D A TA A CLASS
- 9. C E R TA I N D A TA R E P R E S E N TA T I O N , I N M E M O R Y ! OBJECT
- 10. CLASS EXTENSION • Classes can extend other classes • They inherit their attributes and methods • Can extend only one class
- 11. public class Car { public int maxSpeed; public int currentSpeed; ! public void accelerate(int speed) { int tmpSpeed = currentSpeed + speed; if (tmpSpeed < maxSpeed) { currentSpeed = tmpSpeed; } else { currentSpeed = maxSpeed; } } } ! public class Truck extends Car { public int trailers; public int maxTrailers; ! } public void addTrailer() { if (trailers < maxTrailers) { trailers++; } }
- 12. F U N C T I O N A L I T Y PA C K S - A C T I O N D E S C R I P T I O N S I N T E R FA C E S
- 13. public class Car { // … } ! public interface MilitaryUnit { abstract void startShooting(); } ! public class MilitaryCar extends Car implements MilitaryUnit { @Override public void startShooting() { System.out.println("Bang, Bang!"); } }
- 14. SOME OOP LANGUAGES • C++ • Ruby • Python • C# • VB.NET • ...And, wait for it...
- 15. LET’S DIVE INTO… J AVA !
- 16. J AVA AT A G L A N C E C-like syntax Created in Sun Microsystems Now acquired by Oracle
- 17. public class HelloWorldJava { public static void main(String[] args) { System.out.prinln("Hello, World!”); } }
- 18. G R E AT T H I N G S A B O U T J A V A • Garbage collector, (almost) good bye memory leaks! • Shit happens, except exceptions! • Platform independent, runs on JVM, (or maybe Dalvik!)
- 19. “Have a break, have a KitKat.” – K I T K AT
- 20. EXPLORING THE WORLD OF ANDROID
- 21. W H AT I S ANDROID Complete software stack Operating System Middleware Key Applications Open Source Developed by the Open Handset Alliance Fastest growing market Platform with the most devices activations
- 23. ACTIVITY • Creates a window, so that the user can interact with the app • Can communicate with the system • Controls the hierarchy of the user interface
- 24. ACTIVITY LIFECYCLE • Save state • Know when in foreground • Know when it is possible to be garbage collected by the system
- 25. L E T ’ S S TA R T O U R … FIRST APP!
- 26. WHAT CAN I PLAY WITH? C R E AT E S O M E M O R E V I E W S , E V E N T R Y T O D Y N A M I C A L LY C H A N G E THEM USING A BUTTON!