Add a new interface under Android framework/base __android

The process is as follows:
First create a directory under Framework/base called Venus
There are two folders under the/venus directory:

| |--java
|   '--Android

'--JNI
    |--Android.mk
    | jni.cpp

Java class packages Follow the Java package naming rules, OK, go to the critical second step:

Add Venus\ in the Frameworks_base_subdirs variable in the file build/core/pathmap.mk

OK, done, execute the following command in the Android source directory:

Make Update-api make make 
product-sdk-sdk

The new interface is available in both the source and SDK environments, and is stored in the Android.jar

Android SDK Compilation--How to add source code to Android.jar and make principle

http://yueguc.iteye.com/blog/804141