Use ACTION_TIME_TICK in android

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Java

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Android

Hi.
I write this code but it cant install.
In manifest file in line <service name="....."> it show a warning "Exported service does not require permission" and when I install the widget it is closing instalation
How can I solve it ?
thanks

import java.util.Calendar;

import android.app.Service;
import android.appwidget.AppWidgetManager;
import android.appwidget.AppWidgetProvider;
import android.content.BroadcastReceiver;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.IBinder;
import android.widget.RemoteViews;

public class WidgetProvider extends AppWidgetProvider{
	
	
	@Override
	public void onUpdate(Context context, AppWidgetManager appWidgetManager,int[] appWidgetIds) {
		super.onUpdate(context, appWidgetManager, appWidgetIds);
	}
	
	@Override
	public void onEnabled(Context context) {
		super.onEnabled(context);
	}
	
	@Override
	public void onDisabled(Context context) {
		super.onDisabled(context);
	}
	
	public final static class UpdateService extends Service
	{

		final static String ACTION_UPDATE = "ir.ashouraiyan.UPDATE";
		
		final static IntentFilter intentFilter;
		Calendar calendar;
		static 
		{
			intentFilter = new IntentFilter();
			intentFilter.addAction(Intent.ACTION_TIME_TICK);
			intentFilter.addAction(Intent.ACTION_TIMEZONE_CHANGED);
			intentFilter.addAction(Intent.ACTION_TIME_CHANGED);
		}
		
		@Override
		public IBinder onBind(Intent arg0) {
			return null;
		}
		
		@Override
		public void onCreate() {
			super.onCreate();
			Init();
			registerReceiver(timeChangedReceiver, intentFilter);
		}
		
		@Override
		public void onDestroy() {
			super.onDestroy();
			unregisterReceiver(timeChangedReceiver);
		}
		
		@Override
		public int onStartCommand(Intent intent, int flags, int startId) {
			if(ACTION_UPDATE.equals(intent.getAction()))
				Update();
			return super.onStartCommand(intent, flags, startId);
		}
		void Init()
		{
			calendar = Calendar.getInstance();
		}
		
		void Update()
		{
			calendar.setTimeInMillis(System.currentTimeMillis());
			RemoteViews remoteViews = new RemoteViews(getPackageName(), R.layout.widget_layout);
			
			remoteViews.setTextViewText(R.id.textView, ""+calendar.getTimeInMillis());
			
			ComponentName widget = new ComponentName(this, WidgetProvider.class);
			AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(this);
			appWidgetManager.updateAppWidget(widget, remoteViews);
		}
		
		final BroadcastReceiver timeChangedReceiver = new BroadcastReceiver() {
			
			@Override
			public void onReceive(Context context, Intent intent) {
				final String action = intent.getAction();
				if(action.equals(Intent.ACTION_TIMEZONE_CHANGED) ||
				   action.equals(Intent.ACTION_TIME_CHANGED))
					Init();
			
				Update();
			}
			
		};
		
	}
	
}

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="ir.ashouraiyan.moharamdaycounter"
    android:versionCode="1"
    android:versionName="1.0" xmlns:tools="http://schemas.android.com/tools">

    <uses-sdk
        android:minSdkVersion="7"
        android:targetSdkVersion="18" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        
        <receiver 
            android:name=".WidgetProvider">
            <intent-filter>
                <action android:name="android.appwidget.action.APPWIDGET_UPDATE"/>
            </intent-filter>
            <meta-data 
                android:name="android.appwidget.action.APPWIDGET_UPDATE"/>
        </receiver>
        
        <service android:name=".WidgetProvider$UpdateService">
            <intent-filter>
                <action android:name="ir.ashouraiyan.UPDATE"/>
            </intent-filter>
        </service>
        
    </application>

</manifest>