Creating Dynamic UIs with Android Fragments - Second Edition电子书

Creating Dynamic UIs with Android Fragments Second Edition

Table of Contents

Creating Dynamic UIs with Android Fragments Second Edition

Credits

About the Author

About the Reviewers

www.PacktPub.com

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Why subscribe?

Preface

What this book covers

What you need for this book

Who this book is for

Conventions

Reader feedback

Customer support

Downloading the example code

Downloading the color images of this book

Errata

Piracy

Questions

1. Fragments and UI Modularization

The need for a new approach to UI creation

The broad platform support of fragments

How fragments simplify common Android tasks

The relationship between fragments and activities

Making the shift to fragments

The old thinking – activity-oriented

Defining the activity appearance

Displaying the activity UI

The new thinking: fragment-oriented

Creating the fragment layout resources

Defining the layout as a reusable list

Minimizing assumptions

Encapsulating the display layout

Creating the Fragment class

Wrapping the list in a fragment

Providing the description fragment

Converting an activity to use fragments

Summary

2. Fragments and UI Flexibility

Creating UI flexibility

Dynamic fragment layout selection

Adding an alternate layout resource

Managing fragment layout by screen size

Eliminating redundant layout descriptions

Layout aliasing

Designing fragments for flexibility

Avoiding tight coupling

Abstracting fragment relationships

Defining the callback interface

Making the fragment self-contained

Fragment notification

Encapsulating fragment operations

Creating a loosely connected relationship between fragments

Fragments protect against the unexpected

Creating the book description activity

Adding functionality to the book description activity

Making the MainActivity class adaptive

Summary

3. Fragment Life Cycle and Specialization

Understanding the fragment life cycle

Understanding fragment setup and display

Avoiding method name confusion

Understanding fragment hide and teardown

Maximizing the available resources

Managing a fragment state

Special-purpose fragment classes

ListFragment

Associating data with the list

Separating data from the display

Creating the ListFragment derived class with Android Studio

Handling the ListFragment item selection

Updating the layout resources

DialogFragment

Styles

Layout

Displaying DialogFragment

Event handling in DialogFragment

The Dialog identity

Accessing behavior related to Dialog

Wrapping an existing dialog in a fragment

Summary

4. Working with Fragment Transactions

Intentional screen management

Dynamically managing fragments

Deferred execution of transaction changes

Adding and removing fragments

Supporting the back button

Creating an adaptive application layout

Updating the layout to support dynamic fragments

Adapting to device differences

Dynamically loading a fragment at startup

Transitioning between fragments

Eliminating redundant handling

Creating the fragment on the fly

Managing asynchronous creation

Putting it all together

Summary

5. Creating Rich Navigation

A brave new world

Making navigation fun with swipe

Implementing swipe navigation

Adding swipe navigation with Android Studio

Managing the swipe UI behavior

Putting the swipe UI into place

Providing direct navigation to screens

Don't get trapped in the past

Direct navigation for a small number of screens

Direct navigation for four or more screens

Creating a navigation drawer activity with Android Studio

The activity and application screen fragment

The navigation drawer fragment

Navigation drawer fragment standard responsibilities

The additional responsibilities of the NavigationDrawerFragment class

The navigation drawer fragment responsibilities big picture

Summary

6. Fragments and Material Design

Creating a rich user experience

Material design

Principles of material design

The role of motion

Converting our application to use material design

Dealing with different Android versions

Setting up the theme

Updating the fragments appearance

Incorporating motion in fragment transitions

Transitioning fragments on and off the screen

Transitioning the book card off and on the screen

Transitioning the book details on and off the screen

Creating continuity with shared element transitions

Maintaining continuity across multiple cards

Summary

Index