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Android User Interface Design: Implementing Material Design for Developers, 2nd Edition

Android Android

Android User Interface Design: Implementing Material Design for Developers, 2nd Edition

Autor: Ian G. Clifton
Broj strana: 528
ISBN broj: 9780134191409
Godina izdanja: 2015.

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When Android was a new mobile operating system, most of the app developers were tinkerers at heart, curious what they could do with such a powerful and open platform. Early apps were focused on features or just getting branding out in the world. Years went by and the importance of good design grew rapidly.

Flash forward to June, 2014 when Google unveiled a preview of Material Design and Android 5.0 (called Android “L” at the time). It was the most radical visual change to Android in its fast-paced life. This new design ideology was backed with guidelines covering the visual appearance of Android apps but not all the steps to get to create a design nor the implementation details.

Now, leading Android developer and user experience (UX) advocate Ian G. Clifton shows how you can create a beautiful Android application with just a bit of development knowledge and no design experience. Learn the entire process of creating a stunning Android app from wireframes and flowcharts to a complete application with polished animations and advanced techniques such as PorterDuff compositing.

·        Learn how Android has evolved to support outstanding app design

·        Integrate app design with development, from idea to deployment

·        Understand views, the building blocks of Android user interfaces

·        Make the most of wireframes and conceptual prototypes

·        Apply the User-Centered Design process throughout

·        Gain knowledge about typography and iconography

·        Use custom themes and styles for consistent visuals

·        Create beautiful transition animations for a better UX

·        Utilize advanced components like spans and image caches

·        Work with the canvas, color filters, shaders, and image compositing

·        Combine multiple views into custom components for efficiency and ease

·        Develop fully custom views for unique drawing or interaction requirements

·        Design compelling Google Play and Amazon Appstore assets to maximize downloads

One step at a time, this guide helps you bridge the gap between Android developers and designers so you can work with colleagues to create world-class app designs...or do it all yourself!

Introduction 1
Audience for This Book 1
Organization of This Book 1
How to Use This Book 2
This Book’s Website 2
Conventions Used in This Book 2

Chapter 1 Android UI and Material Design 5

A Brief History of Android Design 6
Material Design 8
The Android Design Website 13
Core Principles 14
Standard Components 20
Supporting Multiple Devices 23
Avoiding Painful Mistakes 24
Summary 26
Chapter 2 Understanding Views—The UI Building Blocks 27
What Is a View? 28
Displaying Text 34
Displaying Images 39
Views for Gathering User Input 42
Other Notable Views 45
Listening to Events 47
Other Listeners 48
Summary 49
Chapter 3 Creating Full Layouts With View Groups and Fragments 51
Understanding ViewGroup and the Common 
Implementations 52
Encapsulating View Logic with Fragments 64
The Support Library 70
Summary 74
Chapter 4 Adding App Graphics and Resources 75
Introduction to Resources in Android 76
Resource Qualifiers 76
Understanding Density 81
Supported Image Files 83
Nine-Patch Images 84
XML Drawables 86
Other Resources 101
Summary 106

Chapter 5 Starting A New App 107

Design Methods 108
Defining Goals 110
High-Level Flow 114
Wireframes 117
Continuing with Content Pieces 122
Summary 128
Chapter 6 Prototyping and Developing the App Foundation 129
Organizing into Activities and Fragments 130
Creating the First Prototype 131
Evaluating the First Prototype 160
Summary 165
Chapter 7 Designing the Visuals 167
Wireframes and Graphical Design 168
Tools 168
Styles 169
Lighting 171
Colors 171
Text Considerations 178
Other Considerations 183
Designing Step-by-Step 185
Summary 189
Chapter 8 Applying the Design 191
Working with the Designer 192
Slicing the Graphics Assets 193
Themes and Styles 199
Breaking Comps into Views 200
Developing the Woodworking App 201
Basic Testing Across Device Types 228
Summary 229
Chapter 9 Polishing with Animations 231
Purpose of Animations 232
View Animations 232
Property Animations 233
Property Animation Control 235
ViewPropertyAnimator 241
Animating Form Errors 242
Animating Icons 246
Simple Transitions 252
Summary 262

Chapter 10 Using Advanced Techniques 263

Identifying Jank 264
Using Systrace to Understand Jank 265
Optimizing Images 272
Additional Performance Improvements 283
Hierarchy Viewer 289
Custom Fonts 293
Complex TextViews 295
RecyclerView 299
Summary 300
Chapter 11 Working with the Canvas and Advanced Drawing 303
Creating Custom Drawables 304
Paint 305
Canvas 305
Working with Text 306
Working with Images 310
Color Filters 313
Shaders 325
Summary 330
Chapter 12 Developing Custom Views 331
General Concepts 332
Measurement 332
Layout 333
Drawing 333
Saving and Restoring State 334
Creating a Custom View 334
Summary 347
Chapter 13 Handling Input and Scrolling 349
Touch Input 350
Other Forms of Input 351
Creating a Custom View 352
Summary 385
Appendix A Google Play Assets 387
Application Description 388
The Change Log 389
Application Icon 389
Screenshots 395
Feature Graphic 397
Promotional Graphic 399
Video (YouTube) 400
Promoting Your App 400
Amazon Appstore 401
Appendix B Common Task Reference 403
Dismissing the Software Keyboard 404
Using Full Screen Mode 404
Keeping the Screen On 405
Determining the Device’s Physical Screen Size 406
Determining the Device’s Screen Size in Pixels 406
Determining the Device DPI 407
Checking for a Network Connection 408
Checking if the Current Thread Is the UI Thread 408
Custom View Attributes 409
Index 417



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