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By Godfrey Nolan

Android top Practices by way of Godfrey Nolan indicates you the way to make your Android apps stick out from the gang with greater stories to your apps. Why accept simply making any Android app? construct a super, standout Android app as an alternative that we could your clients compliment it for ease of use, larger functionality and extra. greater compliment capability greater, better placement within the app shops for elevated app revenues.

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Allocation Tracker Threads The thread monitor and profiling view in DDMS is useful for applications that manage a lot of threads. To enable it, click the Update Threads icon, shown in FigureĀ 3-9. 61 62 CHAPTER 3: Performance Figure 3-9. DDMS threads The total time spent in a thread running user code (utime) and system code (stime) is measured in what are known as jiffies. A jiffy was originally the time it takes light to travel 1cm, but for Android devices it is the duration of one tick of the system timer interrupt.

View. ViewStub will allow objects to be created when needed, a technique known as lazily inflating a view. Use Relativelayouts instead of Linearlayouts. New Android developers tend to create a UI over-using LinearLayouts. As the application becomes more complex, these linear layouts can often become quite nested. Replacing these LinearLayouts with a single RelativeLayout will improve your UI loading speed. Lint and the Hierarchy Viewer will help you identify deeply nested LinearLayouts. Java Performance There are books and books written about Java performance, and Android can also benefit from some well-written Java code.

With your application running and ideally performing some interesting task that you would like to get more performance data about, take the following steps to use Method Profiling: 1. Click on Start Method Profiling. 2. Click the icon again to stop collection after a couple of seconds. 3. The IDE will automatically launch the Traceview window and allow you to analyze the results from right within the IDE. 4. Click a method call in the bottom pane to create a hierarchy, showing you the current method, the parent(s) that call this method, and then the children methods called from within the selected method (FigureĀ 3-10).

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