Android best practices by Godfrey Nolan

By Godfrey Nolan

Android most sensible Practices through Godfrey Nolan indicates you ways to make your Android apps stick out from the gang with nice experiences. Why accept simply making any Android app? construct an excellent Android app in its place that we could your clients compliment it for ease of use, larger functionality, and extra. utilizing a chain of instance apps which steadily evolve all through this e-book, Android top Practices brings jointly present Android Read more...

summary: Android top Practices via Godfrey Nolan exhibits you ways to make your Android apps stand proud of the gang with nice experiences. Why accept simply making any Android app? construct a super Android app in its place that shall we your clients compliment it for ease of use, greater functionality, and extra. utilizing a sequence of instance apps which steadily evolve all through this ebook, Android most sensible Practices brings jointly present Android most sensible practices from consumer interface (UI)/user adventure (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 booklet you are going to the best way to: - Use Android layout styles for constant UI event on many units - Use agile ideas corresponding to test-driven improvement, behavior-driven improvement, and non-stop integration - increase the rate and performance of your app - set up an Android app utilizing layout styles equivalent to MVC/MVP - Create and eat leisure and cleaning soap net providers Designing and constructing an app that runs good on many if now not the entire best Android smartphones and drugs this present day will 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 examining and utilizing Android top Practices, you will develop into an improved Android app fashion designer and developer, which in flip could make your apps larger put and extra winning out there position

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Don’t allocate memory if you can avoid it. Mobile development is relatively simple right now; we don’t have the layers and layers of complexity that always appear as a technology matures, such EJBs. But it is inevitable that this is going to happen sooner or later on Android. People are already putting ORMs into their Android apps, so try to move to more of a TDD (test-driven development) model, and think about what you’re introducing. Do you really need to reinvent some caching mechanism to satisfy the feature you’re implementing, or not?

The ViewModel will handle //any logic accordingly. TABLE_NAME, new String[] { "title" }, null, null, null, null, null); } } The View The View, shown in Listing 2-14, in MVVM simply provides a reference to its elements. Listing 2-14. todos"; private ListView taskView; private Button btNewTask; private EditText etNewTask; private TaskListManager delegate; /*The View handles UI setup only. All event logic and delegation *is handled by the ViewModel. */ public static interface TaskListManager { //Through this interface the event logic is //passed off to the ViewModel.

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. Use floats judiciously. Floating-point calculation is expensive, usually taking twice as long as integer calculations on Android devices. Make fewer, more productive, NDK calls. Context switching between Java and C++ using the JNI or NDK can be expensive.

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