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

By Dave Smith, Erik Hellman

Discover greater than a hundred down-to-earth code recipes, overlaying quite a lot of helpful issues 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 guide and useful examples, this 5th variation of Android Recipes is your advisor to writing apps for one in every of today’s most well-liked cellular structures. It deals pragmatic suggestion that can assist you get the activity performed quick and good. this may prevent loads of paintings over making a venture from scratch.

Instead of summary descriptions of complicated suggestions, in Android Recipes you will discover dwell code examples. in the event you begin a brand new undertaking you could give some thought to copying and pasting the code and configuration records from this booklet after which editing them on your personal customization wishes.

What you are going to Learn

  • Code for Android smartphones and tablets
  • Use exterior libraries to save lots of 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 facts and percentage it among applications
  • Capture and play again quite a few equipment media items
  • Communicate with net services
  • Get the main from your person interface

Who This publication Is For

All Android app developers.

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Additional resources for Android Recipes: A Problem-Solution Approach

Sample text

Both of these transitions are created by making a new ObjectAnimator for the custom rotation property, setting its duration to the default duration for that transition type, and attaching it to our LayoutTransition instance along with a key for the specific transition type. The final transition is a little more complicated; we need to create an animation that slides the surrounding views into their new location, but we also want to apply a scale animation during that time. ■■Note When customizing a change transition, it is important to add a component that moves the location of the view, or you will likely see flickering as the view moves to create or fill the view gap.

The Activity. setContentView() method is overloaded with a convenience method to do this for you, requiring only the layout ID valueqaw. main) is required. If the layout needs a little more customization before it is attached to the window, you can inflate it manually and do some work before adding it as the content view. Listing 1-13 inflates the same layout and adds a third button before displaying it. Listing 1-13. WRAP_CONTENT)); //Attach the view to the window setContentView(layout); } In this instance, the XML layout is inflated in the activity code with a LayoutInflater, whose inflate() method returns a handle to the inflated View.

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