Accessing from ANE to Android Main Activity

Hi,

I'm building an ANE to access to a third party library.

If I would like to add the SDK to native code, I could do two things

1) Change MainActivity, let it implement an interface and implement some methods.

2) In the MainActivity, write code on "onCreate()", "onStart()", "onStop()", "onNewIntent(Intent)", "onResume()" methods

Basically, I would like to ask if there is any way access to main activity and and reimplement those methods. Or inject behaviour somehow.

Thanks!