Pro Android Apps Performance Optimization

Native Activity

So far, we have seen how to mix Java and C/C++ in a single application. Android 2.3 goes one step further and defines the NativeActivity class, which allows you to write the whole application in C/C++ but does not force you to, as you still have access to the whole Android Java framework through JNI.

NOTE: You do not have to use NativeActivity for all activities in your application. For example, you could write an application with two activities: one NativeActivity and one ListActivity.

If you prefer to read source files or header files in lieu of more formal documentation, you are in for a treat. In fact, most of the documentation is contained in the header files, which you can find in the NDK's platforms/android-9/arch-arm/usr/include/android ...