Android Programming for Beginners

Spis treści książki

• Android Programming for Beginners - Second Edition
  • Table of Contents
  • Android Programming for Beginners - Second Edition
    • Why subscribe?
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  • Contributors
    • About the author
    • About the reviewers
    • Packt is Searching for Authors Like You
  • Preface
    • Who this book is for
    • What this book covers
    • To get the most out of this book
      • Download the example code files
      • Conventions used
    • Get in touch
      • Reviews
  • 1. Beginning Android and Java
    • Whats new in the second edition?
    • Why Java and Android?
    • The beginner's first stumbling block
    • How Java and Android work together
      • The Android API
      • Java is object-oriented
      • Run that by me again What exactly is Android?
      • Android Studio
    • Setting up Android Studio
      • Final step for now
    • What makes an Android app?
      • Android resources
    • The structure of Android's Java code
      • Packages
      • Classes
      • Methods
    • Our first Android app
      • Extra step 1
      • Extra step 2
    • Deploying the app so far
      • Running and debugging the app on an Android emulator
      • Running the app on a real device
    • Frequently asked questions
    • Summary
  • 2. First Contact Java, XML, and the UI Designer
    • Examining the log output
      • Filtering the logcat output
    • A note for early adopters of this book
    • Exploring the project's Java code and the main layout's XML code
      • Examining the HelloWorldActivity.java file
        • Code folding (hiding) in Android Studio
        • The package declaration
        • Importing classes
        • The class
        • Methods inside the class
        • Summary of the Java code so far
      • Examining the main layout file
        • UI layout elements
        • UI text elements
    • Adding buttons to the main layout file
      • Adding a button via the visual designer
        • Editing the button's attributes
      • Examining the XML code for the new button
      • Adding a button by editing the XML code
      • Giving the buttons unique id attributes
      • Positioning the two buttons in the layout
      • Making the buttons call different methods
    • Leaving comments in our Java code
    • Coding messages to the user and the developer
    • Writing our first Java code
      • Adding message code to the onCreate method
        • Examining the output
      • Writing our own Java methods
        • Examining the output
    • Frequently asked questions
    • Summary
  • 3. Exploring Android Studio and the Project Structure
    • A quick guided tour of Android Studio
    • Project Explorer and project anatomy
      • The Empty Activity project
      • Exploring the Empty Activity project
        • The manifests folder
        • The java folder
        • The res folder
        • The res/drawable folder
        • The res/layout folder
        • The res/mipmap
        • res/values
          • The colors.xml file
          • The strings.xml file
          • The styles.xml file
      • The Basic Activity project
      • Exploring the Basic Activity project
        • The MainActivity.java file
        • The activity_main.xml file
        • The extra methods in MainActivity.java
        • The content_main.xml file
    • Exploring the Android emulator
      • Emulator control panel
      • Using the emulator as a real device
        • Accessing the app drawer
        • Viewing active apps and switching between apps
    • Summary
  • 4. Getting Started with Layouts and Material Design
    • Material design
    • Exploring Android UI design
    • Layouts
    • Creating the Exploring Layouts project
    • Building a menu with LinearLayout
      • Adding a LinearLayout to the project
      • Preparing your workspace
      • Examining the generated XML
      • Adding a TextView to the UI
      • Adding a multi-line TextView to the UI
    • Wiring up the UI with the Java code (part 1)
    • Adding layouts within layouts
    • Making the layout look pretty
    • Wiring up the UI with the Java code (part 2)
    • Building a precise UI with ConstraintLayout
      • Adding a CalenderView
      • Resizing a view in a ConstraintLayout
      • Using the Component Tree window
      • Adding constraints manually
      • Adding and constraining more UI elements
      • Making the text clickable
    • Laying out data with TableLayout
      • Adding a TableRow to TableLayout
      • Using the Component Tree when the visual designer won't do
      • Organizing the table columns
      • Linking back to the main menu
    • Summary
  • 5. Beautiful Layouts with CardView and ScrollView
    • Attributes quick summary
      • Sizing using dp
      • Sizing fonts using sp
      • Determining size with wrap or match
      • Using padding and margin
      • Using the layout_weight property
      • Using Gravity
    • Building a UI with CardView and ScrollView
      • Setting the view with Java code
      • Adding image resources
      • Creating the content for the cards
      • Defining dimensions for CardViews
      • Adding CardViews to our layout
      • Including layout files inside another layout
    • Themes and material design
      • Using the Android Studio theme designer
    • Creating a tablet emulator
    • Frequently asked questions
    • Summary
  • 6. The Android Lifecycle
    • The life and times of an Android app
      • How Android interacts with our apps
    • A simplified explanation of the Android lifecycle
      • The lifecycle phases demystified
    • How we handle the lifecycle phases
    • Lifecycle demo app
      • Coding the lifecycle demo app
      • Running the lifecycle demo app
      • Examining the Lifecycle Demo app output
    • Some other overridden methods
    • The structure of Java code revisited
    • Summary
  • 7. Java Variables, Operators, and Expressions
    • Java is everywhere
    • Syntax and jargon
    • More code comments
    • Storing and using data with variables
      • Types of variables
        • Primitive types
        • Reference types
          • Strings
          • Arrays
          • Classes
    • Using variables
      • Variable declaration
      • Variable initialization
      • Changing values in variables with operators
        • The assignment operator
        • The addition operator
        • The subtraction operator
        • The division operator
        • The multiplication operator
        • The increment operator
        • The decrement operator
    • Expressions
      • Expressing yourself demo app
    • Summary
  • 8. Java Decisions and Loops
    • Making decisions in Java
      • Indenting code for clarity
      • More operators
        • The comparison operator
        • The logical NOT operator
        • The NOT equal operator
        • The greater than operator
        • The less than operator
        • The greater than or equal to operator
        • The less than or equal to operator
        • The logical AND operator
        • The logical OR operator
      • How to use all of these operators to test variables
        • Using the Java if keyword
          • Else do this instead
      • Switching to make decisions
      • Switch Demo app
    • Repeating code with loops
      • While loops
        • Breaking out of a loop
        • The continue keyword
      • Do while loops
      • For loops
      • Loops demo app
    • Summary
  • 9. Java Methods
    • Methods revisited
    • What exactly are Java methods?
    • Method structure
      • Modifier
      • Return type
      • Name of a method
      • Parameters
      • The body
    • Using methods demo apps
      • Real world methods
        • Discovering variable scope
      • Exploring method overloading
    • Scope and variables revisited
    • Frequently asked questions
    • Further reading
    • Summary
  • 10. Object-Oriented programming
    • Important memory management warning
    • Object-oriented programming
      • What is OOP exactly
        • Encapsulation
        • Polymorphism
        • Inheritance
      • Why do it like this?
      • Class recap
    • Looking at the code for a class
      • Class implementation
      • Declaring, initializing, and using an object of the class
    • Basic classes app
      • More things that we can do with our first class
    • Frequently asked questions
    • Summary
  • 11. More Object-Oriented Programming
    • Remember that encapsulation thing?
      • Controlling class use with access modifiers
        • Class access modifiers
        • Class access in summary
      • Controlling variable use with access modifiers
        • Variable access modifiers
        • Variable access summary
      • Methods have access modifiers too
        • Method access modifiers
        • Method access summary
      • Accessing private variables with getters and setters
      • Setting up our objects with constructors
      • Static methods
    • Encapsulation and static methods mini-app
    • OOP and inheritance
    • Inheritance example app
    • Polymorphism
      • Abstract classes
      • Interfaces
    • Frequently asked questions
    • Summary
  • 12. The Stack, the Heap, and the Garbage Collector
    • All the Android UI elements are classes too
      • Re-introducing references
        • A quick break to throw out the trash
        • Seven facts about the Stack and the Heap
      • So how does this Heap thing help me?
      • Using Buttons and TextView widgets from our layout
      • The Inner and Anonymous classes
    • Frequently asked questions
    • Summary
  • 13. Anonymous Classes Bringing Android Widgets to Life
    • Declaring and initializing the objects
    • Creating UI widgets from pure Java without XML
    • Exploring the palette part 1
      • The EditText widget
      • The ImageView widget
      • Radio button and group
    • Anonymous classes
    • Exploring the palette Part 2, and more anonymous classes
      • Switch
      • CheckBox
      • TextClock
    • Widget exploration app
      • Setting up the widget exploration project and UI
      • Coding the widget exploration app
        • Getting a reference to the parts of the UI
        • Coding the checkboxes
          • Changing transparency
          • Changing color
          • Changing size
        • Coding the RadioButtons
        • Using an anonymous class for a regular button
        • Coding the Switch
      • Running the Widget Exploration app
    • Converting layouts to ConstraintLayout
    • Summary
  • 14. Android Dialog Windows
    • Dialog windows
      • Creating the Dialog Demo project
      • Coding a DialogFragment class
        • Using chaining to configure the DialogFragment
      • Using the DialogFragment class
    • The Note to self app
      • Using naming conventions and String resources
      • How to get the code files for the Note to self app
      • The completed app
      • Building the project
      • Preparing the String resources
      • Coding the Note class
      • Implementing the Dialog designs
      • Coding the dialog boxes
        • Coding the DialogNewNote class
        • Coding the DialogShowNote class
      • Showing our new dialogs
        • Coding the floating action button
    • Summary
  • 15. Arrays, ArrayList, Map and Random Numbers
    • A random diversion
    • Handling large amounts of data with arrays
      • Arrays are objects
    • Simple array example mini-app
    • Getting dynamic with arrays
      • Dynamic array example
    • Entering the nth dimension with Arrays
      • Multidimensional Array mini app
      • Array out of bounds exceptions
    • ArrayLists
      • The enhanced for loop
    • Arrays and ArrayLists are polymorphic
    • More Java Collections Meet Java Hashmap
    • The Note to Self app
    • Frequently asked questions
    • Summary
  • 16. Adapters and Recyclers
    • RecyclerView and RecyclerAdapter
      • The problem with displaying lots of widgets
      • The solution to the problem with displaying lots of widgets
      • How to use RecyclerView and RecyclerAdapter
      • What we will do to set up RecyclerView with RecyclerAdapter and an ArrayList of notes
    • Adding RecyclerView, RecyclerAdapter, and ArrayList to the Note to Self project
      • Removing the temporary Show Note button and adding the RecyclerView
      • Creating a list item for the RecyclerView
      • Coding the RecyclerAdapter class
        • Coding the NoteAdapter constructor
        • Coding the onCreateViewHolder method
        • Coding the onBindViewHolder method
        • Coding getItemCount
        • Coding the ListItemHolder inner class
      • Coding MainActivity to use the RecyclerView and RecyclerAdapter classes
        • Adding code to onCreate
        • Modifying the addNote method
        • Coding the showNote method
    • Running the app
    • Frequently asked questions
    • Summary
  • 17. Data Persistence and Sharing
    • Android Intents
      • Switching Activity
      • Passing data between Activities
    • Adding a settings page to Note to Self
      • Creating the SettingsActivity
      • Designing the Settings screen layout
      • Enabling the user to switch to the settings screen
    • Persisting data with SharedPreferences
    • Reloading data with SharedPreferences
    • Making the Note to Self settings persist
      • Coding the SettingsActivity class
      • Coding the MainActivity class
    • More advanced persistence
      • What is JSON?
      • Java exceptions try, catch, and finally
    • Backing up user data in Note to Self
    • Frequently asked questions
    • Summary
  • 18. Localization
    • Making the Note to Self app for Spanish, English, and German speakers
      • Adding Spanish support
      • Adding German support
      • Adding the string resources
    • Running Note to Self in German or Spanish
      • Making the translations work in Java code
    • Summary
  • 19. Animations and Interpolations
    • Animations in Android
      • Designing cool animations in XML
        • Fading in and out
        • Move it, move it
        • Scaling or stretching
        • Controlling the duration
        • Rotate animations
        • Repeating animations
        • Combining animation's properties with Set
      • Instantiating animations and controlling them with Java code
      • More animation features
        • Listeners
        • Animation interpolators
    • Animations Demo App introducing SeekBar
      • Laying out the animation demo
      • Coding the XML Animations
      • Wiring up the Animation Demo app in Java
    • Frequently asked questions
    • Summary
  • 20. Drawing Graphics
    • Understanding the Canvas class
      • Getting started drawing with Bitmap, Canvas, and ImageView
        • Canvas and Bitmap
        • Paint
        • ImageView and Activity
        • Canvas, Bitmap, Paint, and ImageView quick summary
    • Using the Canvas class
      • Preparing the instances of the required classes
      • Initializing the objects
      • Setting the Activity content
    • The Canvas Demo app
      • Creating a new project
        • Coding the Canvas demo app
          • Exploring the Bitmap initialization
        • Drawing on the screen
          • Explaining Color.argb
    • Android coordinate system
      • Plotting and drawing
    • Creating Bitmaps
    • Manipulating Bitmaps
      • What is a Bitmap exactly?
      • The Matrix class
        • Inverting a bitmap to face the opposite direction
        • Rotating the bitmap to face up and down
    • Bitmap manipulation demo app
      • Add the graphic to the project
    • Frequently asked question
    • Summary
  • 21. Threads, and Starting the Live Drawing App
    • Creating the Live Drawing project
    • Looking ahead at the Live Drawing app
    • Coding the LiveDrawingActivity class
    • Coding the LiveDrawingView class
    • Coding the LiveDrawingView class
      • Adding the member variables
      • Coding the LiveDrawingView constructor
      • Coding the draw method
        • Adding the printDebuggingText method
      • Understanding the draw method and the SurfaceView class
    • The game loop
    • Threads
      • Problems with threads
    • Implementing the game loop with a thread
      • Implementing Runnable and providing the run method
      • Coding the thread
      • Starting and stopping the thread
      • Using the Activity lifecycle to start and stop the thread
      • Coding the run method
    • Running the app
    • Summary
  • 22. Particle Systems and Handling Screen Touches
    • Adding custom buttons to the screen
    • Implementing a particle system effect
      • Coding the Particle class
      • Coding the ParticleSystem class
      • Spawning particle systems in the LiveDrawingView class
    • Handling touches
      • Coding the onTouchEvent method
      • Finishing the HUD
    • Running the app
    • Summary
  • 23. Supporting Different Versions of Android, Sound Effects, and the Spinner Widget
    • Handling different versions of Android
      • Detecting the current Android version
    • The Soundpool class
      • Initializing SoundPool the new way
        • Initializing SoundPool the old way
        • Loading sound files into memory
        • Playing a sound
        • Stopping a sound
    • Sound demo app introducing Spinner widget
      • Making sound FX
      • Laying out the sound demo
      • Coding the Sound demo
    • Summary
  • 24. Design Patterns, Multiple Layouts, and Fragments
    • Introducing the model-view-controller pattern
      • Model
      • View
      • Controller
    • Android design guidelines
    • Real-world apps
    • Device detection mini-app
      • Coding the MainActivity class
        • Unlocking the screen orientation
      • Running the app
    • Configuration qualifiers
      • The limitation of configuration qualifiers
    • Fragments
      • Fragments have a lifecycle too
        • onCreate
        • onCreateView
        • onAttach and onDetach
        • onStart, onPause, and onStop
      • Managing Fragments with FragmentManager
    • Our first Fragment app
    • Fragment reality check
    • Frequently asked question
    • Summary
  • 25. Advanced UI with Paging and Swiping
    • Angry birds classic swipe menu
    • Building an image gallery/slider app
      • Implementing the layout
      • Coding the PagerAdapter class
      • Coding the MainActivity class
      • Running the gallery app
    • Building a Fragment Pager/slider app
      • Coding the SimpleFragment class
      • The fragment_layout
      • Coding the MainActivity class
      • The activity_main layout
      • Running the fragment slider app
    • Summary
  • 26. Advanced UI with Navigation Drawer and Fragment
    • Introducing the NavigationView
    • Examining the Simple Database app
      • Insert
      • Delete
      • Search
      • Results
    • Starting the Simple Database project
    • Exploring the auto-generated code and assets
    • Coding the Fragment classes and their layouts
      • Creating the empty files for the classes and layouts
      • Coding the classes
      • Designing the layouts
      • Designing content_insert.xml
      • Designing content_delete.xml
      • Designing content_search.xml
      • Designing content_results.xml
    • Using the Fragment classes and their layouts
      • Editing the Navigation Drawer menu
      • Adding a holder to the main layout
      • Coding the MainActivity.java
    • Summary
  • 27. Android Databases
    • Database 101
      • What is a database
      • What is SQL
      • What is SQLite
    • SQL syntax primer
      • SQLite example code
        • Creating a table
        • Inserting data into the database
        • Retrieving data from the database
        • Updating the database structure
    • Android SQLite API
      • SQLiteOpenHelper and SQLiteDatabase
      • Building and executing queries
      • Database cursors
    • Coding the database class
    • Coding the Fragment classes to use the DataManager
    • Running the Age Database app
    • Summary
  • 28. Coding a Snake Game Using Everything We Have Learned So Far
    • How to play
    • Getting started with the Snake game
      • Make the app full screen and landscape
      • Adding some empty classes
      • Coding SnakeActivity
      • Adding the sound effects
    • Coding the game engine
      • Coding the members
      • Coding the constructor
      • Coding the newGame method
      • Coding the run method
      • Coding the updateRequired method
      • Coding the update method
      • Coding the draw method
      • Coding onTouchEvent
      • Coding pause and resume
    • Running the game
    • Adding the graphics
    • Coding the apple
      • The Apple constructor
    • Using the apple
      • Running the game
    • Summary
  • 29. Enumerations and Finishing the Snake Game
    • Enumerations
    • Add the sound to the project
    • Coding the Snake class
      • Coding the constructor
      • Coding the reset method
      • Coding the move method
      • Coding the detectDeath method
      • Coding the checkDinner method
      • Coding the draw method
      • Coding the switchHeading method
      • Using the snake class and finishing the game
    • Running the completed game
    • Summary
  • 30. A Quick Chat Before You Go
    • Publishing
    • Making an app!
    • Carrying on learning
      • Carrying on reading
      • GitHub
      • StackOverflow
      • Android user forums
      • Higher-level study
    • My other channels
    • Goodbye and thank you
  • Other Books You May Enjoy
    • Leave a review - let other readers know what you think
  • Index

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