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Clear all stack when notification is clicked

I'm showing a notification using FCM on my android app. Everything is working as expected except one issue.
When user clicks on the notification, I need to close all background and foreground activities of my app and open the intent specified in the notification.
How can I do it?
I'm using pending intent like this
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);
final PendingIntent resultPendingIntent =
PendingIntent.getActivity(
mContext,
0,
intent,
PendingIntent.FLAG_CANCEL_CURRENT
);

YOu can use 2 flags to clear all stacks
intentToLaunch.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK);
intentToLaunch.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

Try this,
NotificationManager notificationManager = (NotificationManager) context
.getSystemService(Context.NOTIFICATION_SERVICE);
Notification notification = new Notification(icon, message, when);
Intent notificationIntent = new Intent(context, HomeActivity.class);
notificationIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP
| Intent.FLAG_ACTIVITY_SINGLE_TOP);
PendingIntent intent = PendingIntent.getActivity(context, 0,
notificationIntent, 0);
notification.setLatestEventInfo(context, title, message, intent);
notification.flags |= Notification.FLAG_AUTO_CANCEL;
notificationManager.notify(0, notification);

How to open app in notification in android?

In my app, when completing a task in async file, it shows a notification with this code
NotificationManager notificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
PendingIntent pIntent = PendingIntent.getActivity(context.getApplicationContext(), 0, new Intent(), 0);
Notification noti = new Notification.Builder(context)
.setContentTitle("Complete")
.setSmallIcon(R.drawable.ic_launcher)
.setContentIntent(pIntent)
.setAutoCancel(true)
.build();
notificationManager.notify(0, noti);
The problem is when I click the notification, nothing happens. Basically I want it so that, if the app is already open and the user clicks the notification, then nothing should open. If the app is not open (which means its still running but minimized) then I want it to open the app, like maximize it.
Does anyone know how to do this?
Thanks

You need an Intent, sample code:
NotificationManager notificationManager = (NotificationManager) context
.getSystemService(Context.NOTIFICATION_SERVICE);
Notification notification = new Notification(icon, message, when);
Intent notificationIntent = new Intent(context, MainActivity.class);
notificationIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP
| Intent.FLAG_ACTIVITY_SINGLE_TOP);
PendingIntent intent = PendingIntent.getActivity(context, 0,
notificationIntent, 0);
notification.setLatestEventInfo(context, title, message, intent);
notification.flags |= Notification.FLAG_AUTO_CANCEL;
notificationManager.notify(0, notification);
This will open your MainActivity

values for the intent remain the updated one when making multiple notification for push notification

I am making an app which requires me to send multiple push notifications to users which has distinct values which will be shows when user click on them from status bar.
I am making the intent using the below code
NotificationManager notificationManager = (NotificationManager)
context.getSystemService(Context.NOTIFICATION_SERVICE);
Notification notification = new Notification();
notification.when = when;
notification.icon = icon;
Intent notificationIntent = new Intent(context,RecentStoryPage.class);
notificationIntent.putExtra("id", id_leader);
notificationIntent.putExtra("title", title);
notificationIntent.putExtra("message", message);
// set intent so it does not start a new activity
notificationIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);
PendingIntent intent = PendingIntent.getActivity(context, 0, notificationIntent, PendingIntent.FLAG_UPDATE_CURRENT);
notification.setLatestEventInfo(context, title, "", intent);
notification.flags |= Notification.FLAG_AUTO_CANCEL;
// Play default notification sound
notification.defaults |= Notification.DEFAULT_SOUND;
// Vibrate if vibrate is enabled
notification.defaults |= Notification.DEFAULT_VIBRATE;
notificationManager.notify(Integer.parseInt(id), notification);
When I send single notification, this does not make any issues however whenever I make multiple notifications, whichever notification I click on, it always opens with the recent value.

I got my mistake, I made this line error full
PendingIntent intent = PendingIntent.getActivity(context, 0, notificationIntent, PendingIntent.FLAG_UPDATE_CURRENT);
which I should have made to
PendingIntent intent = PendingIntent.getActivity(context, Integer.parseInt(id), notificationIntent, PendingIntent.FLAG_UPDATE_CURRENT);

Remove Notification from Notification area once it is clicked

I am displaying a notification whenever a new message is received that contains particular keywords. I have used following code to show the notification in the notification area,
String contentTitle = "V-Card Received";
String contentText = "You have reeived a new V-Card";
mNotificationManager = (NotificationManager)context.getSystemService(Context.NOTIFICATION_SERVICE);
Intent notificationIntent = new Intent(context, receiveVCard.class);
notificationIntent.putExtra("sender", sender);
notificationIntent.putExtra("vCardString", messages[i].getDisplayMessageBody());
PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, notificationIntent, Intent.FLAG_ACTIVITY_NEW_TASK);
int icon = R.drawable.contactvcard;
CharSequence tickerText = "V-Card Received";
long when = System.currentTimeMillis();
notifyDetails = new Notification(icon, tickerText, when);
notifyDetails.setLatestEventInfo(context, contentTitle, contentText, pendingIntent);
mNotificationManager.notify(SIMPLE_NOTFICATION_ID, notifyDetails);
notifyDetails.flags =Notification.DEFAULT_LIGHTS | Notification.FLAG_AUTO_CANCEL;
Now I want to remove the notification once the user clicks on it. I Have used Notification.FLAG_AUTO_CANCEL to cancel the notification. But it is not removing the notification even if the user clicks on it. Is there any other way to remove the notification, when the user clicks on the notification.

You are basically setting flags after notification has been put.
You need to swap the last two lines of the code you have provided. Set flags before calling nm.notify();

try this it works fine for me
--> notificationIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP |Intent.FLAG_ACTIVITY_SINGLE_TOP);
PendingIntent intent = PendingIntent.getActivity(context, 0,notificationIntent, 0);
notification.setLatestEventInfo(context, title, message, intent);
--> notification.flags |= Notification.FLAG_AUTO_CANCEL;
notificationManager.notify(i, notification);

this is the prototype of the notification i used in one of my app
Notification notification=new Notification(R.drawable.ic_stat_download_interrupted,getResources().getString(R.string.dint),System.currentTimeMillis());
RemoteViews contentView = new RemoteViews(getPackageName(), R.layout.notification_download_complete);
contentView.setImageViewResource(R.id.notimage, R.drawable.ic_stat_download_interrupted);
contentView.setTextViewText(R.id.nottext, getResources().getString(R.string.dint));
contentView.setTextViewText(R.id.nottitle, update.initialDetail.fileName);
notification.contentView = contentView;
notification.flags=Notification.FLAG_AUTO_CANCEL;
Intent notificationIntent = new Intent(getApplicationContext(), MainDashboard.class);
notificationIntent.setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);
notificationIntent.putExtra(EXTRA_NOTIFICATION_SHOW_DOWNLOADS, true);
PendingIntent contentIntent = PendingIntent.getActivity(getApplicationContext(),0,notificationIntent, 0);
notification.contentIntent=contentIntent;
nm.notify(update.updateId.intValue(), notification);

its working for me
notifyDetails.flags =Notification.FLAG_SHOW_LIGHTS | Notification.FLAG_AUTO_CANCEL;
Hope this is helpful for you.

Android:Notification starts new activity instead of resuming old one if originally activity is not started from launcher

I have spent a week to find a solution but with no success, so I need a help.
When my application goes to background then notification appears and displays status of activity.
It works perfectly if the application is started from launcher (with action = android.intent.action.MAIN and category = android.intent.category.LAUNCHER).
But if the application is started f.e. from the gallery using action android.intent.action.SEND or android.intent.action.SEND_MULTIPLE and category android.intent.category.DEFAULT, then notification starts new activity instead of resuming existing one.
The code for notification:
String ns = Context.NOTIFICATION_SERVICE;
NotificationManager notificationManager = (NotificationManager) getSystemService(ns);
int icon = R.drawable.icon;
Notification notification = new Notification(icon, null, 0);
notification.flags |= Notification.FLAG_ONGOING_EVENT|Notification.FLAG_AUTO_CANCEL|Notification.FLAG_ONLY_ALERT_ONCE;
Context context = this.getApplicationContext();
CharSequence contentTitle = "XXX";
CharSequence contentText = "XXX";
Intent notificationIntent = new Intent(context, MyClass.class);
notificationIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);
PendingIntent activityIntent = PendingIntent.getActivity(context, 0, notificationIntent, 0);
notification.setLatestEventInfo(context, contentTitle, contentText, activityIntent);
notificationManager.notify(NOTIFICATION_ID, notification);
In other words, I have an application "My Application" with activity "My Activity". If "My Activity" is started on the top of gallery and creates notification, then after pressing the notification "My application" is started instead of resuming the gallery with "My activity".
Do you have any idea how to heal it?

Intent myIntent = new Intent(this, MainActivity.class);
myIntent.setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);
PendingIntent pendingIntent = PendingIntent.getActivity(
getBaseContext(), 0, myIntent,
PendingIntent.FLAG_CANCEL_CURRENT);
NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
notification.flags = notification.flags
| Notification.FLAG_ONGOING_EVENT;
notification.flags |= Notification.FLAG_NO_CLEAR;