Android Best Practices by Godfrey Nolan

By Godfrey Nolan

Android most sensible Practices via Godfrey Nolan indicates you the way to make your Android apps stick out from the gang with nice reports. Why accept simply making any Android app? construct an excellent Android app as a substitute that shall we your clients compliment it for ease of use, higher functionality, and extra.

Using a chain of instance apps which steadily evolve all through this book, Android top Practices brings jointly present Android top practices from consumer interface (UI)/user adventure (UX) layout, test-driven improvement (TDD), and layout styles (e.g., MVC) that can assist you take your app to the following level.

In this booklet you’ll learn the way to:

• Use Android layout styles for constant UI event on many devices

• Use agile options akin to test-driven improvement, behavior-driven improvement, and non-stop integration

• increase the rate and performance of your app

• manage an Android app utilizing layout styles comparable to MVC/MVP

• Create and devour leisure and cleaning soap internet services

Designing and constructing an app that runs good on many if now not all of the major Android smartphones and capsules at the present time may be probably the most daunting demanding situations for Android builders. good, this booklet takes a lot of the secret out of that for you.

After studying and utilizing Android top Practices, you will develop into an improved Android app fashion designer and developer, which in flip could make your apps higher put and extra profitable out there position.

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Extra info for Android Best Practices

Example text

Add StrictMode to your onCreate() method as shown in Listing 3-1. StrictMode calls are also pretty expensive, so make sure the code isn’t shipped as production code. Listing 3-1. onCreate(); } Optimize the onSomething( ) classes. Earlier we talked about perception being reality for web applications; in the Android world, if your onStart(), onCreate(), and onResume() classes are lightning fast, then the application is going to be perceived to be a faster Android app. So if there is any code that you can put elsewhere or optimizations that you might want to apply, then spending time in these classes will bring rewards.

It’s reasonable to follow common object-oriented programming practices and have getters and setters in the public interface, but within a class you should always access fields directly. dex in the APK. Use static/final where appropriate. Because of the way the code is compiled into Davlik bytecode, any code that refers to intVal will use the integer value 42 directly if you use a static final, and accesses to strVal will use a relatively inexpensive “string constant” instruction instead of a field lookup.

CHAPTER 3: Performance Figure 3-10. Method Profiling in DDMS using Traceview 5. Identify the methods that are taking the most time so you can look at them closer by creating Traceview files, which we’ll explore later in this section.

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