Develop Reference

Multiple notifications not working on Android

Whenever I receive a push notification on Android it replaces any existing notification in the drawer.
any idea to fix that?
Below is my code:
NotificationManager notificationManager = (NotificationManager)
getSystemService(NOTIFICATION_SERVICE);
Intent intent = new Intent(DbInsertService.this, MessageActivity.class);
intent.putExtra("Service",serviceType);
PendingIntent pIntent = PendingIntent.getActivity(DbInsertService.this, (int)
System.currentTimeMillis(), intent,PendingIntent.FLAG_UPDATE_CURRENT);
Notification n = new Notification.Builder(DbInsertService.this)
.setContentTitle("Message from " +serviceType.getSer_name())
.setContentText(messageType.getHis_title())
.setSmallIcon(R.drawable.ic_email_variant_grey600_24dp)
.setContentIntent(pIntent)
.setAutoCancel(true).build();
notificationManager.notify(0, n);
thanks

Set different Id for different notification.
notificationManager.notify(0, n); // here set different Id.

You're sending them all with the same id. Send different ids and they won't overwrite.

How can I click missed calls icon to open system Missed Calls UI?

I can use the following code to display a notification icon of missed calls, I hope to click the icon to open system Missed Calls UI, how can I do ? Thanks!
At present, I can open ui.CallerMain.class UI if I remove the comment.
BTW, in system Missed Calls UI, missed calls are listed in there.
private void ShowMissCallNotification(Context myContext,String myContentText) {
NotificationManager notificationManager = (NotificationManager) myContext.getSystemService(android.content.Context.NOTIFICATION_SERVICE);
Notification notification = new Notification(android.R.drawable.sym_call_missed,
myContext.getString(R.string.app_name),
System.currentTimeMillis());
notification.flags |= Notification.FLAG_ONGOING_EVENT;
notification.flags |= Notification.FLAG_NO_CLEAR;
CharSequence contentTitle= "Title";
CharSequence contentText =myContentText;
//Intent notificationIntent = new Intent(myContext, ui.CallerMain.class);
//PendingIntent contentItent = PendingIntent.getActivity(myContext, 0, notificationIntent, 0);
//notification.setLatestEventInfo(myContext, contentTitle, contentText,contentItent);
notificationManager.notify(NotificationID, notification);
}

Set a Pending Intent to the notification which will trigger the Call History.
First create an intent with Call Log
Intent resultIntent = new Intent();
resultIntent.setAction(Intent.ACTION_VIEW);
resultIntent.setType(CallLog.Calls.CONTENT_TYPE);
Then obtain the PendingIntent
PendingIntent resultPendingIntent =
PendingIntent.getActivity(
this,
0,
resultIntent,
PendingIntent.FLAG_UPDATE_CURRENT
);
Then set the PendingIntent to your notification builder
NotificationCompat.Builder builder = new NotificationCompat.Builder(this)
.setSmallIcon()
.setContentTitle()
.setContentText()
.setContentIntent(resultPendingIntent);
notificationManager.notify(id, builder.build());
Now clicking the notification will open the Call Log.
Update: The code commented out in your snippet will work if you create the Intent as mentioned above in this answer. But please be aware that the method by which you are creating notification has been deprecated. Use NotificationCompat class from the support library in future.

how to show only one notification at a time for android application

I use the following code to show the notifications
private void SendNotification(String notificationTitle, String notificationMessage)
{
NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
android.app.Notification notification = new android.app.Notification(R.drawable.ic_launcher, notificationMessage,
System.currentTimeMillis());
Intent notificationIntent = new Intent(this, MainActivity.class);
notificationIntent.putExtra("notif_id", "5100");
//Setting the single top property of the notification and intent.
notification.flags = Notification.FLAG_ONGOING_EVENT | Notification.FLAG_AUTO_CANCEL | Notification.FLAG_SHOW_LIGHTS;
notificationIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT);
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, notificationIntent, 0);
notification.setLatestEventInfo(MainActivity.this, notificationTitle, notificationMessage, pendingIntent);
notificationManager.notify((int)System.currentTimeMillis(), notification);
}
Each time a new notification comes, the previous one should be removed and the new one should be shown.
Any clues will be helpful.
Thanx in advance
o.

You are generatting a notification with different id each time (System.currentTimeMillis()), change it for a single ID.
notificationManager.notify(0, notification);
Post a notification to be shown in the status bar. If a notification with the same id has already been posted by your application and has not yet been canceled, it will be replaced by the updated information.
NotificationManager.html

There is one way that you should clear all Notification of your Application before you post a newer one.
Give it a shot like,
notificationManager.cancelAll();
To clear a particular Notification you can do it like,
notificationManager.cancel(notification_id);

Android remove notification(created by mNotifyBuilder) on click

i found many answer to this, but none help :(
I have this code:
private static void generateNotification(Context context, String message) {
int icon = R.drawable.icon;
NotificationManager mNotificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
int notifyID = 96;
NotificationCompat.Builder mNotifyBuilder = new NotificationCompat.Builder(context)
.setContentTitle("MyApp")
.setContentText(message)
.setDefaults(Notification.DEFAULT_ALL)
.setAutoCancel(true)
.setSmallIcon(icon);
Notification notification = mNotifyBuilder.build();
notification.flags |= Notification.FLAG_AUTO_CANCEL;
mNotificationManager.notify(notifyID, notification);
}
But if i click on notification nothing happen and it is still there. In documentation is, that i need to use:
.setAutoCancel(true)
Some one have similar problem and somebody tells him to use:
notification.flags |= Notification.FLAG_AUTO_CANCEL;
I use both, but no result :(
Thank you very much for answers. :)

I think that if you don't use an Intent with your notification, the only way to dismiss its to swipe it.
Otherwise you can use an Intent to open your activity and that will actually clear the notification:
Intent showIntent = new Intent(this, YourActivity.class);
PendingIntent contentIntent = PendingIntent.getActivity(this, 0, showIntent, 0);
And to add it to the notification:
NotificationCompat.Builder mNotifyBuilder = new NotificationCompat.Builder(context)
.setContentTitle("MyApp")
.setContentText(message)
.setDefaults(Notification.DEFAULT_ALL)
.setAutoCancel(true)
.setContentIntent(contentIntent)
.setSmallIcon(icon);
Hope this helps!

The user can dismiss all notification or if you set your notification to auto-cancel it is also removed once the user selects it.
You can also call the cancel() for a specific notification ID on the NotificationManager. The cancelAll() method call removes all of the notifications you previously issued.
Example:
mNotificationManager.cancel(notifyId);

just use this line inside button onclick event-
mNotificationManager.cancel(notifyId);//id is that u used for notification

just add
Intent showIntent = new Intent();
PendingIntent contentIntent = PendingIntent.getActivity(this, 0, showIntent, 0);
myNotification = new Notification.Builder(getApplicationContext())
.setContentTitle("Title")
.setContentText("Text")
.setTicker("notificatio")
.setContentIntent(contentIntent)
.setDefaults(Notification.DEFAULT_ALL)
.setAutoCancel(true)
.setSmallIcon(R.drawable.ic_launcher)
.build();
add empty pending intent then on click on notification, notification will remove. it works for me.

I generally use:
mNotificationManager.cancelAll();

Android Notification intent to clear it self

I have read many examples of how to create notification messages.
What i wanted to achieve, is because the notification will be executed by a widget, i would like
the notification intent when clicked to clear it self when the user clicks on it.I do not have an activity to return to.
The notification for my purposes will just plainly notify, nothing else.
So what would be the code of an intent that just clear/cancel itself.
The code below is an activity launched by a button(button code not included) the notification will be fired up by a background service.
CharSequence title = "Hello";
CharSequence message = "Hello, Android!";
final NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
final Notification notification = new Notification(R.drawable.icon,"A New Message!",System.currentTimeMillis());
notification.defaults=Notification.FLAG_ONLY_ALERT_ONCE+Notification.FLAG_AUTO_CANCEL;
Intent notificationIntent = new Intent(this, AndroidNotifications.class);
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0,notificationIntent, 0);
notification.setLatestEventInfo(AndroidNotifications.this, title,message, pendingIntent);
notificationManager.notify(NOTIFICATION_ID, notification);
Thanks

Check out FLAG_AUTO_CANCEL
Bit to be bitwise-ored into the flags field that should be set if the notification should be canceled when it is clicked by the user.
EDIT :
notification.flags |= Notification.FLAG_AUTO_CANCEL;

Set the flags in notification.flags instead of notification.defaults.
Example:
notification.flags |= Notification.FLAG_ONLY_ALERT_ONCE | Notification.FLAG_AUTO_CANCEL;

If you're using NotificationCompat.Builder (a part of android.support.v4) then simply call its object's method setAutoCancel
NotificationCompat.Builder builder = new NotificationCompat.Builder(context);
builder.setAutoCancel(true);
Some guys were reporting that setAutoCancel() did not work for them, so you may try this way as well
builder.build().flags |= Notification.FLAG_AUTO_CANCEL;

The only way I can see of doing this is to have your Notification's Intent point to a background Service. When this Service is launched, it would clear the given Notification using NotificationManager.cancel(int id). The Service would then stop itself. It's not pretty, and would not be easy to implement, but I can't find any other way of doing it.

/**
Post a notification to be shown in the status bar.
Obs.: You must save this values somewhere or even pass it as an extra through Intent to use it later
*/
notificationManager.notify(NOTIFICATION_ID, notification);
/**
Cancel a previously shown notification given the notification id you've saved before
*/
notificationmanager.cancel(NOTIFICATION_ID);

Using setContentIntent should solve your problem:
.setContentIntent(PendingIntent.getActivity(this, 0, new Intent(), 0));
For example:
NotificationCompat.Builder mBuilder= new NotificationCompat.Builder(this)
.setSmallIcon(R.drawable.notification_icon)
.setContentTitle("title")
.setAutoCancel(true)
.setContentText("content")
.setContentIntent(PendingIntent.getActivity(this, 0, new Intent(), 0));
NotificationManager notificationManager= (NotificationManager)getSystemService(Context.NOTIFICATION_SERVICE);
notificationManager.notify(0, mBuilder.build());
Often you might want to direct the user to the relevant content and so might replace 'new Intent()' with something else.