Read e-book online Android best practices PDF

By Godfrey Nolan

ISBN-10: 1430258578

ISBN-13: 9781430258575

ISBN-10: 1430258586

ISBN-13: 9781430258582

Android top Practices by way of Godfrey Nolan exhibits you ways to make your Android apps stand proud of the group with nice studies. Why accept simply making any Android app? construct a super Android app as a substitute that shall we your clients compliment it for ease of use, greater functionality, and extra. utilizing a sequence of instance apps which progressively evolve all through this publication, Android top Practices brings jointly present Android Read more...

summary: Android most sensible Practices by way of Godfrey Nolan indicates you the way to make your Android apps stick out from the group with nice reports. Why accept simply making any Android app? construct a super Android app in its place that we could your clients compliment it for ease of use, greater functionality, and extra. utilizing a chain of instance apps which progressively evolve all through this e-book, Android top Practices brings jointly present Android top practices from consumer interface (UI)/user event (UX) layout, test-driven improvement (TDD), and layout styles (e.g., MVC) that will help you take your app to the subsequent point. during this ebook you are going to : - Use Android layout styles for constant UI event on many units - Use agile concepts akin to test-driven improvement, behavior-driven improvement, and non-stop integration - enhance the rate and performance of your app - set up an Android app utilizing layout styles reminiscent of MVC/MVP - Create and devour relaxation and cleaning soap internet companies Designing and constructing an app that runs good on many if now not the entire prime Android smartphones and drugs this present day could be some of the most daunting demanding situations for Android builders. good, this publication takes a lot of the secret out of that for you. After studying and utilizing Android most sensible Practices, you are going to develop into a far better Android app clothier and developer, which in flip could make your apps larger positioned and extra profitable out there position

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The Web server metric that is often aimed for is that 95% of pages should be returned in a second or less. The raw stats, such as the number of page hits and page timings (using the time-taken token, as shown in Figure 3-2), are all there to see in the log files. The trick is to optimize the slowest, most visited pages, which give the perception of a faster web server; perception is reality when it comes to performance. The same is true on mobile devices. CHAPTER 3: Performance 45 Figure 3-2. Web Server log files with time-taken token Dramatic increases in page speed are commonly achieved on the worst-performing pages by adding indexes on the database, fixing SELECT statements to limit the amount of data returned, or fixing problems with programming control flow logic.

Accessing arrays is much faster than accessing vectors, Strings, and StringBuffers. ” And while it’s less of an issue on Android, where SQLite is used more for client-side caching of information, there is no reason why EXPLAIN PLAN cannot still be very useful in your performance tuning. And don’t forget you can create indexes on SQLite, too, if you need them (see Figure 3-3). Figure 3-3. InsertHelper command for inserting large amounts of data or use compileStatement where appropriate. Don’t store the database on the SD Card.

Com/) are an excellent way to see how your app is interacting with Web services. The topic of Web services is covered in more detail in Chapter 8. Optimized Code In the next few pages you’re going to see how some of these optimizations are used in the ToDo List application. java, which has a bare-bones onCreate() method. Listing 3-2. java, shown in Listing 3-3, has many of the Android and Java optimizations mentioned in this chapter; see comments in the code for more information. It also shows how to stop and start profiling using the Traceview API.

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Android best practices by Godfrey Nolan


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