Learn Android Studio 3 (eBook)

Ted Hagos is currently heading the software development group of a Dublin-based software development company. He is a certified Java programmer and enterprise architect. He has over 15 years of software development experience, and many years of experience in corporate training. He held a post as instructor in IBM Advanced Career Education, Ateneo ITI and Asia Pacific College, and has trained hundreds of programmers in various languages and platforms.

Table of Contents 5
About the Author 10
About the Technical Reviewer 11
Acknowledgments 12
Introduction 13
Chapter 1: Introduction 15
History 15
Statistics 16
Operating System 17
Chapter 2: Android Studio 19
Android Studio Setup 20
macOS 20
Windows 20
Linux 21
Configuring Android Studio 22
Hardware Acceleration 28
The Android Studio IDE 29
Chapter 3: Application Fundamentals 32
Creating a Project 32
Using Android Studio 37
Compilation and Runtime 47
Android Components 48
Components 49
Activities 51
Services 51
Content Providers 52
Broadcast Receivers 52
Chapter 4: Activities and Layouts 53
Building the Hello Screen 53
The Layout File 54
Main Java Program 57
Views and Layout 60
Chapter 5: Handling Events 67
Overview of Event Handling 67
Declarative Event Handling 69
Programmatic Event Handling 71
Working with Text and Buttons 76
More Event Handling Code 82
Using an Inner Class as a Listener 84
Using MainActivity as the Listener 88
Chapter 6: Working with Multiple Activities 95
Component Activation 95
Launching a Specific Activity 97
Demo Project 97
Pass Data to Another Activity 107
About the GCF Algorithm 107
Returning Results from Other Activities 119
Project Setup 120
Program Files 123
Implicit Intents 126
Demo Project 127
Opening an http Request 129
Activity Life Cycle 132
Chapter 7: UI Elements 136
UI Elements 136
Themes and Colors 136
Colors 137
Themes 141
AppBar 143
Demo App 145
Fragments 153
Project Setup 155
Adding Fragments Programmatically 162
Chapter 8: Running in the Background 167
Long Running Tasks 167
Demo Project 168
AsyncTask 172
Chapter 9: Debugging 178
Syntax Errors 179
Runtime Exceptions 180
Logic Errors 182
Chapter 10: Data Persistence 185
SharedPreferences 187
Demo Project 187
Verifying the File 193
Application Level SharedPreferences 195
Internal Storage 203
How to Work with Internal Storage 203
Demo Project 204
Chapter 11: App Distribution 210
Preparing the App for Release 211
Prepare Materials and Assets for Release 211
Configure the App for Release 211
Build a Release-Ready Application 212
Releasing the App 217
Appendix A:Introduction to Java 220
The Java Language 220
Virtual Machine 221
Editions 221
Setup 222
Hello World 223
Program Structure 225
Other Considerations 229
Variables and Data Types 230
Primitive Types 231
Reference Types 231
Operators 232
Program Flow 235
Decisions 235
if then else 235
switch Statement 237
Loops 239
Simple Application of Control Structures 241
The FizzBuzz Problem 241
How to Print a 5×5 Multiplication Table 242
Methods 243
Object Oriented Programming 246
More Details on Classes 249
Constructors 250
Overloading 251
Packages 252
Multiple Types in a Package 253
When We Don’t Need “import” 253
Inheritance 254
Object as the Root Class 255
Single Rooted Class Inheritance 256
Polymorphism 256
Interfaces 257
Multiple Inheritance 258
Exceptions 259
Index 262