How would I use my own platform code for creating Apps?

Question

I am able to flash my own build on cell phone successfully.
How would I use my own platform code for creating Apps such that App would invoke the respective methods in platform code which i have modified? After 'make' ing the code, does it generate any jar files for do so?

Answer 1

To access additional code you put in android platform, You will need to create your own Android SDk from your source code, than you will need to import that SDK in eclipse, And after that you can use that code in your application.
Building SDK is very easy, see http://tools.android.com/build, and after building sdk just import that sdk in eclipse and you are good to go!!

Answer 2

There are applications built as part of the platform, with direct access (circumventing the SDK) to framework. Then there are applications that are built on top of published SDK.

In this case, your app is not meant for public distribution as a separate apk, given that you have a modified platform. If so, just build your app as part of the platform, and use your new interfaces in your app. You can use http://androidxref.com/4.3_r2.1/ to search the existing source tree, to see how the apps use the non-SDK interfaces as a reference.

If you are planning on publishing your app in Google Play, you should of course use only the public APIs, and you would not be modifying the platform to begin with.