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 group with nice studies. Why accept simply making any Android app? construct a super Android app as an alternative that we could your clients compliment it for ease of use, greater functionality, and extra.

Using a chain of instance apps which steadily evolve all through this book, Android most sensible Practices brings jointly present Android most sensible practices from person interface (UI)/user event (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 ebook you’ll learn the way to:

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

• Use agile innovations 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 akin to MVC/MVP

• Create and devour relaxation and cleaning soap net services

Designing and constructing an app that runs good on many if no longer all of the prime Android smartphones and drugs this present day might 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 most sensible Practices, you are going to develop into a more robust Android app fashion designer and developer, which in flip could make your apps larger put and extra winning out there place.

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Additional resources for Android Best Practices

Example text

But if the app uses some core algorithm or functionality that doesn’t need to be tied to the UI in any significant way, it should probably be run natively. Running things natively is almost always going to be faster than Java even with the JIT compiler. The NDK also comes with some major security benefits, as it’s much harder to reverse-engineer C++ code. Inflate Views only when needed. Basically, the idea here is that you only inflate the views a minimum number of times or better still delay displaying the view, because inflating views is pretty expensive.

This interface between the two layers provides a framework for the code to expand and for new developers to follow the MVC pattern to know what new code belongs where. Listing 2-12. MVC Controller code public class TodoController { /*The Controller provides data from the Model for the View *to bind to the UI. addEntry(data); } //Overrides to handle View specifics and keep Model straightforward. close(); } return tasks; } } 29 30 CHAPTER 2: Android Patterns MVVM The MVVM (Model-View-ViewModel) pattern comes from the Microsoft world.

Net, it might also be applicable to Android. The difference between MVC and MVVM is that the Model should contain no logic specific to the view—only logic necessary to provide a minimal API to the ViewModel. The Model only needs to add/delete, and the ViewModel handles the specific needs of the View. All event logic and delegation is handled by the ViewModel, and the View handles UI setup only. In our example the Model component largely stays the same, as you can see in Listing 2-13. The ViewModel, shown in Listing 2-15 acts as a delegate between the ToDoActivity (View) and the ToDoProvider (Model).

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