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.