something about nativeactivity

I just look through some files about nativeactivity, and make a memo here in case I forget.
files related:
frameworks\base\core\java\android\app\NativeActivity.java
    protected void onCreate(Bundle savedInstanceState) {

frameworks\base\core\jni\android_app_NativeActivity.cpp

android_native_app_glue.c(may be in NDK)

android-ndk-r7-windows\android-ndk-r7\sources\android\native_app_glue\

native-activity sample in NDK samples

android-ndk-r7-windows\android-ndk-r7\samples\native-activity\