Class to get calls from C++

InterfaceFromCJNI.java

// Usage
//  
//  1º In MainActivity class, onCreate method, add this line:
//    InterfaceFromCJNI.callbackMainActivity = this;
//  2º Add this function, defined as interface in InterfaceFromCJNI class:
//	@Override
//	public void msgFromC(String message) 
//	{
//		// Your own
//		Log.d(LOG_TAG, "msgFromC is: " + message);
//	}

// Java package
package com.github.vgoni; 

// Imports
import android.util.Log;

public final class InterfaceFromCJNI 
{
	// Callback for activities. Must be initialized onCreate Activity
	static public MainActivity 				callbackMainActivity;
	
	// Function in Activity to call
	interface InterfaceMainActivity
	{
		void msgFromC(String message);
	}
	
	// This function is called from JNI
	static public void receivedMsgFromC(String message)
	{
		Log.d(LOG_TAG, "receivedMsgFromC");
		callbackMainActivity.runOnUiThread(new Runnable() 
		{
			  public void run() 
			  {
			    // Notify with Toast
					Toast.makeText(callbackMainActivity.getApplicationContext(), message, Toast.LENGTH_LONG).show();
					callbackMainActivity.msgFromC(message);
			  }
		});
	}
}