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