android time cheat plugin problem with broadcastreceiver

Hi,
i want to make an android plugin wich use android.intent.action.TIME_SET so when user changing the time i can tell he cheated !
so here is android java class :

package com.mahdi.detecttime;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;

import com.unity3d.player.UnityPlayer;

public class MahdiBridge extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
       UnityPlayer.UnitySendMessage("TimeDetector", "OnTchanged", "yes" );
    }
}

_ and here is the manifest file

<?xml version="1.0" encoding="utf-8"?>
<manifest
    xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.unity3d.player"
    xmlns:tools="http://schemas.android.com/tools"
    android:installLocation="preferExternal"
    android:versionCode="1"
    android:versionName="1.0">
    <supports-screens
        android:smallScreens="true"
        android:normalScreens="true"
        android:largeScreens="true"
        android:xlargeScreens="true"
        android:anyDensity="true"/>

    <application
        android:theme="@style/UnityThemeSelector"
        android:icon="@drawable/app_icon"
        android:label="@string/app_name">
        <activity android:name="com.unity3d.player.UnityPlayerActivity"
                  android:label="@string/app_name">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
            <meta-data android:name="unityplayer.UnityActivity" android:value="true" />
        </activity>
		<receiver android:name="com.mahdi.detecttime.MahdiBridge">
		  <intent-filter>
			<action android:name="android.intent.action.TIME_SET" />
		  </intent-filter>
		</receiver>
    </application>
</manifest>

__ and in unity i have a gameobject call “TimeDetector” and a class call “onTimeChanged” and a public function call “OnTchanged” and when OnTchanged function is called i know user is cheating !
and everything is working (when i change time in device that function is called) but its only working if app is running and when i close the unity app in the logcat i get this message:
“Unity: Native libraries not loaded - dropping message for TimeDetector.OnTchanged”
its mean the broadcastreceiver has been called but unity is not running to run that function. so how can i fix this i want to when broadcastreceiver is called its wait until i start unity app then its run the function
so how can i do this
thanks.

i fix the problem with just save the broadcast in a SharedPreferences and then when starting unity i just start check that value and now i can tell if user changing the time.
thanks