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Spis treści

Programming Android with Kotlin eBook -- spis treści

• Preface
  • Who Should Read This Book
  • Why We Wrote This Book
  • Navigating This Book
  • Conventions Used in This Book
  • Using Code Examples
  • OReilly Online Learning
  • How to Contact Us
  • Acknowledgments
• 1. Kotlin Essentials
  • The Kotlin Type System
    • Primitive Types
    • Null Safety
    • The Unit Type
    • Function Types
    • Generics
  • Variables and Functions
    • Variables
    • Lambdas
    • Extension Functions
  • Classes
    • Class Initialization
    • Properties
    • lateinit Properties
    • Lazy Properties
    • Delegates
    • Companion Objects
    • Data Classes
    • Enum Classes
    • Sealed Classes
  • Visibility Modifiers
  • Summary
• 2. The Kotlin Collections Framework
  • Collection Basics
    • Java Interoperability
    • Mutability
    • Overloaded Operators
    • Creating Containers
  • Functional Programming
    • Functional Versus Procedural: A Simple Example
    • Functional Android
  • Kotlin Transformation Functions
    • The Boolean Functions
    • Filter Functions
    • Map
    • flatMap
    • Grouping
    • Iterators Versus Sequences
  • An Example
    • The Problem
    • The Implementation
  • Summary
• 3. Android Fundamentals
  • The Android Stack
    • Hardware
    • Kernel
    • System Services
    • Android Runtime Environment
    • Applications
  • The Android Application Environment
    • Intents and Intent Filters
    • Context
      • Component context
      • Application context
  • Android Application Components: The Building Blocks
    • The Activity and Its Friends
      • Fragments
      • The back stack
    • Services
      • Started Services
      • Bound Services
    • Content Providers
    • Broadcast Receivers
  • Android Application Architectures
    • MVC: The Foundation
    • Widgets
    • The Local Model
  • Android Patterns
    • ModelViewIntent
    • ModelViewPresenter
    • ModelViewViewModel
  • Summary
• 4. Concurrency in Android
  • Thread Safety
    • Atomicity
    • Visibility
  • The Android Threading Model
  • Dropped Frames
  • Memory Leaks
  • Tools for Managing Threads
    • Looper/Handler
    • Executors and ExecutorServices
  • Tools for Managing Jobs
    • JobScheduler
    • WorkManager
  • Summary
• 5. Thread Safety
  • An Example of a Thread Issue
  • Invariants
    • Mutexes
    • Thread-Safe Collections
  • Thread Confinement
  • Thread Contention
  • Blocking Call Versus Nonblocking Call
  • Work Queues
  • Back Pressure
  • Summary
• 6. Handling Concurrency Using Callbacks
  • Example-of-Purchase Feature
  • Creating the App
    • View-Model
    • View
    • Implement the Logic
    • Discussion
      • Structured concurrency
      • Memory leaks
  • Limitations of the Threading Model
  • Summary
• 7. Coroutines Concepts
  • What Exactly Is a Coroutine?
    • Your First Coroutine
    • The async Coroutine Builder
  • A Quick Detour About Structured Concurrency
  • The Parent-Child Relationship in Structured Concurrency
  • CoroutineScope and CoroutineContext
  • Suspending Functions
  • Suspending Functions Under the Hood
  • Using Coroutines and Suspending Functions: A Practical Example
  • Dont Be Mistaken About the suspend Modifier
  • Summary
• 8. Structured Concurrency with Coroutines
  • Suspending Functions
    • Set the Scene
    • Traditional Approach Using java.util.concurrent.ExecutorService
    • A Reminder About HandlerThread
    • Using Suspending Functions and Coroutines
    • Summary of Suspending Functions Versus Traditional Threading
  • Cancellation
    • Coroutine Lifecycle
      • Coroutine cancellation
      • Job holds the state
    • Cancelling a Coroutine
    • Cancelling a Task Delegated to a Third-Party Library
    • Coroutines That Are Cooperative with Cancellation
    • delay Is Cancellable
    • Handling Cancellation
    • Causes of Cancellation
  • Supervision
  • supervisorScope Builder
  • Parallel Decomposition
  • Automatic Cancellation
  • Exception Handling
    • Unhandled Versus Exposed Exceptions
    • Exposed Exceptions
    • Unhandled Exceptions
  • Summary
  • Closing Thoughts
• 9. Channels
  • Channels Overview
    • Rendezvous Channel
      • Iterating over a Channel
      • Other flavors of Channel
    • Unlimited Channel
    • Conflated Channel
    • Buffered Channel
    • Channel Producers
  • Communicating Sequential Processes
    • Model and Architecture
    • A First Implementation
    • The select Expression
    • Putting It All Together
    • Fan-Out and Fan-In
    • Performance Test
    • Back Pressure
    • Similarities with the Actor Model
    • Execution Is Sequential Inside a Process
    • Final Thoughts
  • Deadlock in CSP
  • TL;DR
  • Limitations of Channels
  • Channels Are Hot
  • Summary
• 10. Flows
  • An Introduction to Flows
    • A More Realistic Example
    • Operators
    • Terminal Operators
  • Examples of Cold Flow Usage
    • Use Case #1: Interface with a Callback-Based API
    • Use Case #2: Concurrently Transform a Stream of Values
    • What Happens in Case of Error?
    • Final Thoughts
    • Use Case #3: Create a Custom Operator
    • Usage
  • Error Handling
    • The try/catch Block
    • Separation of Concern Is Important
    • Exception Transparency Violation
    • The catch Operator
      • Exception transparency
      • Another example
      • You can use emit from inside catch
    • Materialize Your Exceptions
      • A bonus
  • Hot Flows with SharedFlow
    • Create a SharedFlow
    • Register a Subscriber
    • Send Values to the SharedFlow
    • Using SharedFlow to Stream Data
      • The architecture
      • The implementation
      • Test of our implementation
      • Replay values
      • Suspend or not?
      • Buffer values
    • Using SharedFlow as an Event Bus
    • StateFlow: A Specialized SharedFlow
    • An Example of StateFlow Usage
  • Summary
• 11. Performance Considerations with Android Profiling Tools
  • Android Profiler
    • Network Profiler
      • Viewing network calls with Connection View and Thread View
      • Network call, expanded: Overview | Response | Request | Callstack
    • CPU Profiler
      • CPU timeline
      • Thread activity timeline
      • Analysis panel
      • Method tracing
      • Recording a sample method trace
    • Energy Profiler
    • Memory Profiler
  • Detecting Memory Leaks with LeakCanary
  • Summary
• 12. Trimming Down Resource Consumption with Performance Optimizations
  • Achieving Flatter View Hierarchy with ConstraintLayout
  • Reducing Programmatic Draws with Drawables
  • Minimizing Asset Payload in Network Calls
  • Bitmap Pooling and Caching
  • Reducing Unnecessary Work
  • Using Static Functions
  • Minification and Obfuscation with R8 and ProGuard
  • Summary
• Index