In the Service of pop Notification

My Service category:

 package test.service; 

import test.activity.TestServiceActivity; 
import android.app.Notification; 
import android.app.NotificationManager; 
import android.app.PendingIntent; 
import android.app.Service; 
import android.content.Context; 
import android.content.Intent; 
import android.os.IBinder; 

public class MyService extends Service {

@ Override 
public IBinder onBind (Intent arg0) {
/ / TODO Auto-generated method stub 
return null; 
} 

@ Override 
public void onCreate () {
/ / TODO Auto-generated method stub 
super.onCreate (); 
} 

@ Override 
public void onDestroy () {
/ / TODO Auto-generated method stub 
super.onDestroy (); 
} 

@ Override 
public void onStart (Intent intent, int startId) {
/ / TODO Auto-generated method stub 
super.onStart (intent, startId); 

String ns = Context.NOTIFICATION_SERVICE; 
NotificationManager nm = (NotificationManager) getSystemService (ns); 

CharSequence tickerText = "Hello"; 
long when = System.currentTimeMillis (); 

Notification notification = new Notification (1, tickerText, when); 

PendingIntent pi = PendingIntent.getActivity (this, 0, new Intent (this, 
TestServiceActivity.class), 0); 
notification.setLatestEventInfo (this, "attendance alert", "There are 15 minutes to work on time", pi); 

nm.notify (1, notification); 
} 

} 

My TestServiceActivity categories:

 package test.activity; 

import test.service.MyService; 
import android.app.Activity; 
import android.content.Intent; 
import android.os.Bundle; 
import android.view.View; 

public class TestServiceActivity extends Activity {
/ ** Called when the activity is first created. * / 
@ Override 
public void onCreate (Bundle savedInstanceState) {
super.onCreate (savedInstanceState); 
setContentView (R.layout.main); 
} 

public void start (View view) {
Intent serviceIntent = new Intent (this, MyService.class); 
/ / ServiceIntent.setFlags (Intent.FLAG_ACTIVITY_NEW_TASK); 
startService (serviceIntent); 
} 

public void stop (View view) {
Intent serviceIntent = new Intent (this, MyService.class); 
/ / ServiceIntent.setFlags (Intent.FLAG_ACTIVITY_NEW_TASK); 
stopService (serviceIntent); 
} 
} 

mian.xml

  
android: layout_width = "fill_parent" 
android: layout_height = "fill_parent" 
android: orientation = "vertical"> 

When I ran from the project, click on start service button to trigger the onStart method on the error:
bad notification posted from package

Will is my code have a problem?
In fact, I want to remind the user to work a regular feature, want to boot a service, and then go through AlarmManager regular judge, to set the time on the pop-up Notification to alert the user to work, I thought this a problem?
Score much, I would like him to come help out troubled for several days!<-! Main posts under Banner (D4) -><-! Posts under the main text (D5) ->
Reply:
Service can not be ejected Notification, you can send a broadcast in Service, the receiving radio broadcast was in and pop Notification
Reply:
Nobody cares, finally get their own
Reply:
So how to get the landlord under the ah ~ ~

Reply:
This child does not write carefully ah
Error Log to see at a glance the
02-07 05:51:42.303: E / AndroidRuntime (655): FATAL EXCEPTION: main
02-07 05:51:42.303: E / AndroidRuntime (655): android.app.RemoteServiceException: Bad notification posted from package com.wzy.cn: Couldn't create icon: StatusBarIcon (pkg = com.wzy.cn id = 0x1 level = 0 visible = true num = 0)

Replaced by the phrase on OK
Notification notification = new Notification ( R.drawable.ic_launcher , tickerText, when);

Reply: