Building Android UIs with Custom Views电子书

Title Page

Copyright

Building Android UIs with Custom Views

Credits

About the Author

Acknowledgements

About the Reviewer

www.PacktPub.com

Why subscribe?

Customer Feedback

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

Errata

Piracy

Questions

Getting Started

What's a custom view

The need for custom views

Examples on the market

Setting up the environment

Installing development tools

How to set up an emulator

How to set up a real device for developing

Creating our own first custom view

Extending a view

Creating a simple view from scratch

Summary

Implementing Your First Custom View

Measuring and parameterizing our custom view

Measuring our custom view

Parameterizing our custom view

Instantiating custom views

Instantiating custom views from code

Builder pattern

Creating a custom layout

Extending ViewGroup

Basic rendering

Creating the basic circular activity indicator

Summary

Handling Events

Basic event handling

Reacting to touch events

Drag events

Complex layouts

Advanced event handling

Detecting gestures

Summary

Advanced 2D Rendering

Drawing operations

Bitmaps

Using the Paint class

Drawing more primitives

Drawing text

Transformations and operations

Putting it all together

Summary

Introducing 3D Custom Views

Introduction to OpenGL ES

Getting started with OpenGL ES in Android

Drawing basic geometry

Drawing geometry

Adding volume

Adding textures

Loading external geometry

Summary

Animations

Custom-made animations

Timed frame animations

Fixed timestep

Using Android SDK Classes

ValueAnimator

ObjectAnimator

Summary

Performance Considerations

Performance impact and recommendations

The impact of not following the best practices

Code optimization

Mocking up the preview window

Summary

Sharing Our Custom View

Best practices for sharing our custom view

Considerations and recommendations

Configurable

Publishing our custom view

Open sourcing our custom view

Creating a binary artifact

Summary

Implementing Your Own EPG

Building an EPG

EPG basics and animation setup

Interaction

Zooming

Configurations and Extensions

Making it configurable

Implementing callbacks

Summary

Building a Charts Component

Building a basic chart custom view

Margins and padding

Basic implementation

Optimizations and improvements with Paths

Background lines and details

Customizations

Adding advanced features

Real-time updates

Multiple data sets

Zooming and scrolling

Summary

Creating a 3D Spinning Wheel Menu

Creating an interactive 3D custom view

Adding interactions

Improving interactions and animations

Adding actionable callbacks

Customizations

Beyond the basic implementation

Rendering text

Multiple faces

Summary