AppActivity.java for cocos2dx (support local notifications)

package org.cocos2dx.cpp;

import java.util.Calendar;

import org.cocos2dx.lib.Cocos2dxActivity;

import android.app.Activity;
import android.app.AlarmManager;
import android.app.PendingIntent;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;

public class AppActivity extends Cocos2dxActivity {
    private static final String TAG = Cocos2dxActivity.class.getSimpleName();
    private static Activity sActivity;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState); // run cocos2dxactivity standard onCreate method
        sActivity = this;
    }

    public static void showLocalNotification(String message, int interval, int tag) {
        Log.v(TAG, "showLocalNotification");
        PendingIntent sender = getPendingIntent(message, tag);

        Calendar calendar = Calendar.getInstance();
        calendar.setTimeInMillis(System.currentTimeMillis());
        calendar.add(Calendar.SECOND, interval);

        AlarmManager am = (AlarmManager)sActivity.getSystemService(ALARM_SERVICE);
        am.set(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), sender);
    }

    public static void cancelLocalNotification(int tag) {
        Log.v(TAG, "cancelLocalNotification");
        PendingIntent sender = getPendingIntent(null, tag);
        AlarmManager am = (AlarmManager)sActivity.getSystemService(ALARM_SERVICE);
        am.cancel(sender);
    }

    private static PendingIntent getPendingIntent(String message, int tag) {
        Intent i = new Intent(sActivity.getApplicationContext(), LocalNotificationReceiver.class);
        i.putExtra("notification_id", tag);
        i.putExtra("message", message);
        PendingIntent sender = PendingIntent.getBroadcast(sActivity, 0, i, 0);
        return sender;
    }
}