显示多个推送通知
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【中文标题】显示多个推送通知【英文标题】：Get more than one Push Notification displayed 【发布时间】：2015-11-01 21:13:49 【问题描述】：我想一次显示多个通知，但它们总是会覆盖其他通知，所以总是只有一个通知。
这是BackgroundService.class：
import saveload.*;
public class BackgroundChecks extends Service
public static boolean started = false;
private boolean interrupted = false;
private Intent goToAmtsblatt = null;
private Intent goToAmtstafel = null;
private long sleepPeriod = 3*60*60*1000;
ScheduledFuture sf = null;
@Override
public IBinder onBind(Intent intent)
return null;
@Override
public int onStartCommand(Intent intent, int a, int b)
int ret = super.onStartCommand(intent, a, b);
try
if (intent.hasExtra("notificationActivityAmtsblatt"))
goToAmtsblatt = new Intent(this, Class.forName(intent.getStringExtra("notificationActivityAmtsblatt")));
catch(Exception cce)
//do nothing
try
if (intent.hasExtra("notificationActivityAmtstafel"))
goToAmtstafel = new Intent(this, Class.forName(intent.getStringExtra("notificationActivityAmtstafel")));
catch(Exception cce)
//do nothing
return ret;
@Override
public void onCreate()
super.onCreate();
started = true;
//do the tasks in Background
ScheduledExecutorService ses = Executors.newSingleThreadScheduledExecutor();
Runnable run = new Runnable()
@Override
public void run()
//gets Preference Set
final SharedPreferences sharedPref = BackgroundChecks.this.getSharedPreferences("gemeindeMuckendorf", Context.MODE_PRIVATE);
try
getAktuelles(sharedPref);
catch(Exception ex)
//do nothing, just retry
try
getServiceNews(sharedPref);
catch(Exception ex)
//do nothing, just retry
try
getAmtsblatt(sharedPref);
catch(Exception ex)
//do nothing, just retry
try
getAmtstafel(sharedPref);
catch(Exception ex)
//do nothing, just retry
;
sf = ses.scheduleAtFixedRate(run, 0, sleepPeriod, TimeUnit.HOURS);
@Override
public void onDestroy()
super.onDestroy();
if(sf!=null)
sf.cancel(true);
sf = null;
started = false;
public void getAmtsblatt(SharedPreferences sharedPref) throws Exception
List<String> lastList = new ArrayList<String>();
List<String> newList;
//gets Preferences - last successfully checked List
Thread.sleep(1000);
lastList = Utils.stringToList(sharedPref.getString("retrievedPDFString", ""));
newList = Utils.getUrlsFromhtml(Utils.getHTML("http://www.muckendorf-wipfing.at/5-0-Gemeindeblatt+Online.html"));
//count new URLs
int newCount = 0;
for (String url : newList)
if (!lastList.contains(url)) //new URL -> count
newCount++;
Thread.sleep(10);
if (newCount > 0) //one or more new URLs -> notification
NotificationCompat.Builder mBuilder =
new NotificationCompat.Builder(BackgroundChecks.this)
.setSmallIcon(R.drawable.nclogo)
.setContentTitle("Es gibt " + newCount + " neue" + (newCount > 1 ? " Gemeindeblätter" : "s Gemeindeblatt"))
.setContentText((goToAmtsblatt == null ? "" : "Hier klicken, um " + (newCount > 1 ? "sie" : "es") + " anzusehen."))
.setAutoCancel(true);
//if goTo is set, built the redirct
if (goToAmtsblatt != null)
TaskStackBuilder stackBuilder = TaskStackBuilder.create(BackgroundChecks.this);
stackBuilder.addParentStack(Class.forName(goToAmtsblatt.getComponent().getClassName()));
stackBuilder.addNextIntent(goToAmtsblatt);
PendingIntent resultPendingIntent = stackBuilder.getPendingIntent(0, PendingIntent.FLAG_ONE_SHOT);
mBuilder.setContentIntent(resultPendingIntent);
//re-set the retrieved Pdf List
SharedPreferences.Editor editor = sharedPref.edit();
editor.putString("retrievedPDFString", Utils.listToString(newList));
editor.commit();
//show the notification
NotificationManager mNotificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
mNotificationManager.notify(0, mBuilder.build());
public void getAmtstafel(SharedPreferences sharedPref) throws Exception
List<String> lastList = new ArrayList<String>();
List<String> newList;
Thread.sleep(1000);
lastList = Utils.stringToList(sharedPref.getString("retrievedAmtstafelString", ""));
newList = Utils.getUrlsFromHTML(Utils.getHTML("http://www.muckendorf-wipfing.at/6-0-Amtstafel.html"));
//count new URLs
int newCount = 0;
for (String url : newList)
if (!lastList.contains(url)) //new URL -> count
newCount++;
Thread.sleep(10);
if (newCount > 0) //one or more new URLs -> notification
NotificationCompat.Builder mBuilder =
new NotificationCompat.Builder(BackgroundChecks.this)
.setSmallIcon(R.drawable.nclogo)
.setContentTitle("Es gibt " + newCount + " neue" + (newCount > 1 ? " Amtstafel PDFs" : "s Amtstafel PDF"))
.setContentText((goToAmtstafel == null ? "" : "Hier klicken, um " + (newCount > 1 ? "sie" : "es") + " anzusehen."))
.setAutoCancel(true);
//if goTo is set, built the redirct
if (goToAmtstafel != null)
TaskStackBuilder stackBuilder = TaskStackBuilder.create(BackgroundChecks.this);
stackBuilder.addParentStack(Class.forName(goToAmtstafel.getComponent().getClassName()));
stackBuilder.addNextIntent(goToAmtstafel);
PendingIntent resultPendingIntent = stackBuilder.getPendingIntent(1, PendingIntent.FLAG_ONE_SHOT);
mBuilder.setContentIntent(resultPendingIntent);
//re-set the retrieved Pdf List
SharedPreferences.Editor editor = sharedPref.edit();
editor.putString("retrievedAmtstafelString", Utils.listToString(newList));
editor.commit();
//show the notification
NotificationManager mNotificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
mNotificationManager.notify(0, mBuilder.build());
public void getAktuelles(SharedPreferences sharedPref) throws Exception
List<News> news = Utils.getNewsFromHTML(Utils.getHTML("http://www.muckendorf-wipfing.at/22-0-Aktuelle+Meldungen.html"));
String newNewsString = new ObjectSaver().saveString(news);
String oldNewsString = sharedPref.getString("aktuellesList", "");
if(!oldNewsString.equals(newNewsString))
SharedPreferences.Editor edit = sharedPref.edit();
edit.putString("aktuellesList", newNewsString);
edit.commit();
public void getServiceNews(SharedPreferences sharedPref) throws Exception
//retrieve List
List<News> serviceList = new ArrayList();
serviceList.add(new News("Müllabfuhr Kalender", Utils.extractContentFromHTML(Utils.getHTML("http://www.muckendorf-wipfing.at/34-0-Muellabfuhr+Kalender.html"))));
serviceList.add(new News("SMS-Erinnerung an Müllabfuhr-Termine", "<html><head><meta http-equiv=\"refresh\" content=\"0; URL=http://195.58.166.60/noeav/umweltverbaende/default.asp?portal=verband&vb=tu&kat=5032&op=5002\"></head><body></body></html>"));
serviceList.add(new News("Gemeinde- und andere Gebühren", Utils.extractContentFromHTML(Utils.getHTML("http://www.muckendorf-wipfing.at/35-0-Gemeindegebuehren.html"))));
serviceList.add(new News("Infos zum Wirtschaftshof, Öffnungszeiten & Preisliste", Utils.extractContentFromHTML(Utils.getHTML("http://www.muckendorf-wipfing.at/36-0-Wirtschaftshof.html"))));
//save List to sharedPrefs
SharedPreferences.Editor edit = sharedPref.edit();
edit.putString("serviceList", new ObjectSaver().saveString(serviceList));
edit.commit();
这里是 MyBroadcastReceiver.class：
public class MyBroadcastReceiver extends BroadcastReceiver
@Override
public void onReceive(Context context, Intent intent)
Intent startServiceIntent = new Intent(context, BackgroundChecks.class);
startServiceIntent.putExtra("notificationActivityAmtsblatt", AmtsblattActivity.class.getName());
startServiceIntent.putExtra("notificationActivityAmtstafel", AmtsblattActivity.class.getName());
context.startService(startServiceIntent);
所以我的问题是： 任何人都可以在这里帮助我让 此代码 工作以显示多个通知吗？谢谢！
【问题讨论】：
【参考方案1】： mNotificationManager.notify(0, mBuilder.build());
生成一个 id 为 0 的通知。每次使用 id 调用 notify 时，都会用该 id 覆盖当前通知。
解决方案：为您的新通知使用唯一 ID
mNotificationManager.notify(getUniqueID(), mBuilder.build());
【讨论】：
欢迎来到 ***！您的回答似乎是相关的。 @Daniel Olsson 非常感谢，我不会找到这个！！ :)以上是关于显示多个推送通知的主要内容，如果未能解决你的问题，请参考以下文章