By Godfrey Nolan
Android most sensible Practices via Godfrey Nolan exhibits you the way to make your Android apps stand proud of the group with more desirable experiences in your apps. Why accept simply making any Android app? construct an excellent, standout Android app in its place that we could your clients compliment it for ease of use, greater functionality and extra. larger compliment skill larger, better placement within the app shops for elevated app revenues.
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Extra info for Android Best Practices
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. Listing 3-3. renderTodos(); // TIP: Again, don't allocate unnecessary objects that expand the heap size to significant proportions (DONE) // Once GC occurs, a large amount of the heap memory is dumped, especially with // local data structures, which renders a large portion of the heap unused.
There are also no JIT optimizations. 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.
Make fewer, more productive, NDK calls. Context switching between Java and C++ using the JNI or NDK can be expensive. There are also no JIT optimizations. 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.
Android Best Practices by Godfrey Nolan