New PDF release: 50 Android Hacks

By Carlos Sessa

ISBN-10: 1617290564

ISBN-13: 9781617290565

Summary

The top programming ideas are frequently the shortest and simplest—the hacks. during this compact and infinitely important ebook, Android specialist Carlos Sessa gives you 50 hacks that would prevent time, stretch your abilities, and perhaps even make you smile.

About this Book

Hacks. shrewdpermanent programming innovations to unravel thorny little difficulties. Ten traces of code that prevent days of labor. The little gem stones you study from the outdated man within the subsequent dice or from the geniuses on Stack Overflow. That's simply what you'll locate during this compact and necessary book.

The identify 50 Android Hacks says all of it. starting from the mundane to the staggering, each one self-contained, absolutely illustrated hack is simply a few pages lengthy and contains annotated resource code. those useful ideas are geared up into twelve collections protecting format, animations, styles, and more.

What's Inside
• Hack three making a customized ViewGroup
• Hack eight Slideshow utilizing the Ken Burns effect
• Hack 20 The Model-View-Presenter pattern
• Hack 23 The SyncAdapter pattern
• Hack 31 Aspect-oriented programming in Android
• Hack 34 utilizing Scala within Android
• Hack forty three Batching database operations
• Plus forty three extra hacks!

Most hacks paintings with Android 2.x and larger. Version-specific hacks are in actual fact marked.

Purchase of the print e-book features a loose publication in PDF, Kindle, and ePub codecs from Manning Publications.
About the Author
Carlos Sessa is a passionate specialist Android developer. He's lively on Stack Overflow and is an avid hack collector.

Table of Contents
<ol>• operating your manner round layouts
• developing cool animations
• View counsel and tricks
• Tools
• Patterns
• operating with lists and adapters
• beneficial libraries
• Interacting with different languages
• Ready-to-use snippets
• past database basics
• fending off fragmentation
• development tools
</ol>

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Extra info for 50 Android Hacks

Example text

RELATIVE_TO_PARENT If we go back to our example, we can explain every child position with words like this:  Initial X: Position provided by its parent  Initial Y: -1 from the position provided by its parent  Final X: Position provided by its parent  Final Y: Position provided by its parent The end result will be every child “falling” through the y axis to its position. Because we have a delay between children, it’ll look like a cascade. 1 The bottom line Adding animations to ViewGroups is easy, and they make your application look professional and polished.

2 Button with 50% of its parent width (landscape) Combining weightSum and layout_weight Android devices have different sizes, and as developers we need to create XML in a way that works for different screen sizes. Hard-coding sizes isn’t an option, so we’ll need something else to organize our views. We’ll use the layout_weight and weightSum attributes to fill up any remaining space inside our layout. 3) describes a scenario similar to what we’re trying to achieve: Defines the maximum weight sum.

Their role is to make these transitions less dull and more vibrant. Don’t abuse them; you don’t want your application to look like a Christmas tree! 6+ By default, when you add views to a ViewGroup, they’re instantly added and displayed, but there’s an easier way to animate that action. In this hack, I’ll show you how to apply an animation to children views being added to their parent ViewGroup. I’ll show you how to add eye candy to your application in a few lines. Android provides a class called LayoutAnimationController.

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50 Android Hacks by Carlos Sessa


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