Download Android Recipes: A Problem-Solution Approach by Dave Smith, Erik Hellman PDF

By Dave Smith, Erik Hellman

ISBN-10: 148422258X

ISBN-13: 9781484222584

Discover greater than a hundred down-to-earth code recipes, overlaying quite a lot of helpful subject matters utilizing whole and real-world operating code examples. This ebook is up to date to incorporate the Android N SDK (7.0), in addition to past releases.

Crammed with insightful guideline and priceless examples, this 5th version of Android Recipes is your advisor to writing apps for one in every of today’s most well liked cellular structures. It deals pragmatic recommendation to help you get the task performed speedy and good. this may prevent loads of paintings over making a venture from scratch.

Instead of summary descriptions of advanced ideas, in Android Recipes you can find reside code examples. for those who commence a brand new undertaking you could ponder copying and pasting the code and configuration records from this publication after which editing them to your personal customization wishes.

What you are going to Learn

  • Code for Android smartphones and tablets
  • Use exterior libraries to avoid wasting time and effort
  • Boost app functionality through the use of the Android NDK and RenderScript
  • Design apps for functionality, responsiveness, and seamlessness
  • Send facts among units and different exterior hardware
  • Persist software info and proportion it among applications
  • Capture and play again numerous machine media items
  • Communicate with internet services
  • Get the main from your consumer interface

Who This publication Is For

All Android app developers.

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Extra info for Android Recipes: A Problem-Solution Approach

Sample text

34 Chapter 1 ■ Layouts and Views The 10-inch tablet devices in the previous size scheme were considered extra-large screens, and in the new scheme they have a smallest width of around 720dp. For these devices, the screen is large enough to use the tablet layout in both orientations, so we create qualified directories that call out only the screen size. Again, as with the smaller tablets, using both smallest-width and bucket-size qualifiers ensures we are compatible with all tablet versions. In all cases in which the tablet layout was referenced, we had to create only one layout file to manage, thanks to the power of using aliases.

Bull’s-eye custom view 1-4. Animating a View Problem Your application needs to animate a view object, either as a transition or for effect. Solution (API Level 12) An ObjectAnimator instance, such as ViewPropertyAnimator, can be used to manipulate the properties of a View, such as its position or rotation. animate() and then modified with the specifics of the animation. Modifications made through this API will alter the actual properties of the View itself. 20 Chapter 1 ■ Layouts and Views How It Works ViewPropertyAnimator is the most convenient method for animating view content.

Intent-filter> ... xml files packaged with the Android framework include a few options for themes with some useful custom properties. Light: Variation on the standard theme that uses an inverse color scheme for the background and user elements. 0. Light: (API Level 11) Theme that uses an inverse color scheme and that has an action bar by default. 0. DarkActionBar: (API Level 14) Theme with an inverse color scheme but a dark solid action bar. 0. Light: (API Level 21) Theme with a simplified color scheme governed by a small palette of primary colors.

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