Let's define a Java interface that native C/C++ code will call back through JNI:
Create a
StoreListener.java, which contains an interface defining a few callbacks, one for integers, one for strings, and one for colors, as follows:package com.packtpub.store; public interface StoreListener { void onSuccess(int pValue); void onSuccess(String pValue); void onSuccess(Color pValue); }Open
Store.javaand make a few changes.Declare a member delegate
StoreListener, to which success callbacks are sentChange the
Storeconstructor to inject the delegate listener, which is going to beStoreActivityPublic class Store implements StoreListener { private StoreListener mListener; public Store(StoreListener pListener) { mListener = pListener; } ...
Finally, implement the
StoreListenerinterface and its corresponding methods, which simply forwards calls to the delegate:... public void onSuccess(int pValue) { ...