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The other notifications is lost the click behaviour, when a notification is chosen at device's system tray in android

If there're two my app's notifications at device's system tray, the user choose one notification, the app's opening but all of other notifications is lost the click behavior, it means user cannot click them anymore. How can I prevent this action?
My code:
NotificationCompat.Builder builder = new NotificationCompat.Builder(this)
.setSmallIcon(R.drawable.icon)
.setContentTitle(getString(R.string.test))
.setContentText(messageBody);
Intent intent = new Intent(this, NotifActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
Bundle bundle = new Bundle();
bundle.putString(NotificationViewActivity.MESSAGE_EXTRA, messageBody);
intent.putExtras(bundle);
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0,
intent, PendingIntent.FLAG_ONE_SHOT);
builder.setContentIntent(pendingIntent);
NotificationManager notificationManager = (NotificationManager)
getSystemService(Context.NOTIFICATION_SERVICE);
notificationManager.notify(new Random().nextInt(50) + 1, builder.build());

int mId = (int) System.currentTimeMillis();
NotificationCompat.Builder mBuilder =
new NotificationCompat.Builder(context)
.setSmallIcon(R.drawable.imagename)
.setContentTitle("Title")
.setContentText("message")
.setDefaults(Notification.DEFAULT_ALL)
.setAutoCancel(true);
// Creates an explicit intent for an Activity in your app
Intent resultIntent = new Intent(context, activityname.class);
//activityname is the name of activity which you want to launch
resultIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);
// The stack builder object will contain an artificial back stack for the
// started Activity.
// This ensures that navigating backward from the Activity leads out of
// your application to the Home screen.
TaskStackBuilder stackBuilder = TaskStackBuilder.create(context);
// Adds the back stack for the Intent (but not the Intent itself)
stackBuilder.addParentStack(MainActivity.class);
// Adds the Intent that starts the Activity to the top of the stack
stackBuilder.addNextIntent(resultIntent);
PendingIntent resultPendingIntent =
stackBuilder.getPendingIntent(
0,
PendingIntent.FLAG_UPDATE_CURRENT
);
mBuilder.setContentIntent(resultPendingIntent);
NotificationManager mNotificationManager =
(NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
// mId allows you to update the notification later on.
mNotificationManager.notify(mId, mBuilder.build());

I detected my root cause in below code
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent,
PendingIntent.FLAG_ONE_SHOT);
Because the request code is the same for all notifications, so when we click to the one notification, the other lost their click listener. Fix like below codes
PendingIntent pendingIntent = PendingIntent.getActivity(this, (int) System.currentTimeMillis(), intent,
PendingIntent.FLAG_ONE_SHOT);

Android notification in background continue previous intent

sendNotification('Hello', 0, 1);
private void sendNotification(String message, int id, int notification_num) {
NotificationManager nm = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
Intent intent = new Intent(this, Main.class);
intent.setData(new Uri.Builder().scheme("data").build());
intent.putExtra("id", id);
intent.putExtra("noti_number", notification_num);
TaskStackBuilder stackBuilder = TaskStackBuilder.create(this);
stackBuilder.addParentStack(Main.class);
stackBuilder.addNextIntent(intent);
PendingIntent pendingIntent = PendingIntent.getActivity(this, id, intent,
PendingIntent.FLAG_UPDATE_CURRENT);
Uri defaultSoundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this)
.setContentTitle("App Title")
.setContentText(message)
.setSmallIcon(R.drawable.notif)
.setAutoCancel(true)
.setSound(defaultSoundUri)
.setContentIntent(pendingIntent);
notificationBuilder.setNumber(notification_num);
nm.notify(id, notificationBuilder.build());
}
When application is opened intent.putExtra works fine, but when I close app (kill proccess), notification is coming but not with it extra than with new intent extra.
Problem is also with multiple notification, when app is closed, there are no grouping like I want it to be.
notificationBuilder.setNumber is always 0 in background.
Need help how to run app always in background or how to continue previous intent.

I have done it using GcmIntentService & GcmBroadcastReceiver, for more info click on this link.

Click event not working on Heads-up notification

Nothing happens on clicking Accept or Reject button of the head-ups notification.
But when the head-up notification disappear and from clicking Accept and Reject from the notification panel is working.
Testing on Android 5.1.0.
Intent acceptIntent = new Intent(this, NotificationReceiver.class);
acceptIntent.setAction("com.android.test.Accept");
PendingIntent acceptPendingIntent = PendingIntent.getBroadcast(TestApplication.getAppContext(), 12345, acceptIntent, PendingIntent.FLAG_CANCEL_CURRENT);
Intent rejectIntent = new Intent(this, NotificationReceiver.class);
rejectIntent.setAction("com.android.test.Reject");
PendingIntent rejectPendingIntent = PendingIntent.getBroadcast(TestApplication.getAppContext(), 12345, rejectIntent, PendingIntent.FLAG_CANCEL_CURRENT);
NotificationCompat.Builder builder = new NotificationCompat.Builder(this);
builder.setSmallIcon(R.drawable.fundu);
builder.setContentTitle("Test Notification");
builder.setContentText("Hello");
builder.setAutoCancel(true);
builder.setVisibility(NotificationCompat.VISIBILITY_PUBLIC);
builder.setCategory(NotificationCompat.CATEGORY_SERVICE);
builder.setDefaults(NotificationCompat.DEFAULT_ALL);
builder.setPriority(NotificationCompat.PRIORITY_MAX);
builder.addAction(R.drawable.ic_check_icon, "Accept", acceptPendingIntent);
builder.addAction(R.drawable.ic_action_close, "Reject", rejectPendingIntent);
NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
notificationManager.notify(0, builder.build());

Just setting the vibration, makes it working fine.
builder.setVibrate(new long[0]);

The key is to call setContentIntent on the Notification Builder and passing it a PendingIntent. The Full code with comments explaining each step is included below. See the part named "THIS IS THE PERTINENT PART" (The Full code is included for completeness sake.)
// Use Notification Builder to start things off
// There are other ways of acquiring a Notification Builder; this is just an example
String channelId = "channelId";
String title = "title";
String body = "body";
NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(context, channelId);
notificationBuilder
.setSmallIcon(R.drawable.ic_alarm)
.setContentTitle(title)
.setContentText(body);
//--------------- THIS IS THE PERTINENT PART ---------------
// Prepare Intent for creating PendingIntent
Intent intent = new Intent(context, ActivityToStart.class);
// Create Pending Intent
int requestCode= 1234; // requestCode has to be a unique ID for EACH PendingIntent
TaskStackBuilder stackBuilder = TaskStackBuilder.create(context);
stackBuilder.addNextIntent(intent);
PendingIntent pendingIntent = stackBuilder.getPendingIntent(
requestCode,
PendingIntent.FLAG_UPDATE_CURRENT // use to prevent re-using current Activity Intent
);
notificationBuilder.setContentIntent(pendingIntent);
// Finally, create the Notification
Notification notification = notificationBuilder.build();

How to make notification uncancellable/unremovable

I want to make my Android notification stay even if user clicks it or clicks clear all...
Right now it stays sometimes, and gets removed sometimes, and I'm not sure what causes it.
Here's my code for the notification:
#TargetApi(Build.VERSION_CODES.JELLY_BEAN)
public static void createNotification()
{
NotificationManager notificationManager = (NotificationManager)context.getSystemService(NOTIFICATION_SERVICE);
NotificationCompat.Builder builder = new NotificationCompat.Builder(context)
.setContentTitle("Wolftech Field Agent")
.setContentText("Getting Status")
.setSmallIcon(R.drawable.ic_launcher)
.setOngoing(true)
.setAutoCancel(false);
Intent intent = new Intent(context, FieldAgent.class);
intent.setAction(Intent.ACTION_MAIN);
intent.addCategory(Intent.CATEGORY_LAUNCHER);
TaskStackBuilder stackBuilder = TaskStackBuilder.create(context);
stackBuilder.addParentStack(FieldAgent.class);
stackBuilder.addNextIntent(intent);
PendingIntent pendingIntent = stackBuilder.getPendingIntent(0, PendingIntent.FLAG_UPDATE_CURRENT);
builder.setContentIntent(pendingIntent);
notificationManager.notify(NOTIFICATION_ID, builder.build());
}
public static void updateNotificationText(String inString)
{
NotificationManager notificationManager = (NotificationManager)context.getSystemService(Context.NOTIFICATION_SERVICE);
NotificationCompat.Builder builder = new NotificationCompat.Builder(context)
.setContentText(inString)
.setContentTitle("Wolftech Field Agent")
.setSmallIcon(R.drawable.ic_launcher)
.setOngoing(true)
.setAutoCancel(false);
Intent intent = new Intent(context, FieldAgent.class);
intent.setAction(Intent.ACTION_MAIN);
intent.addCategory(Intent.CATEGORY_LAUNCHER);
TaskStackBuilder stackBuilder = TaskStackBuilder.create(context);
stackBuilder.addParentStack(FieldAgent.class);
stackBuilder.addNextIntent(intent);
PendingIntent pendingIntent = stackBuilder.getPendingIntent(0, PendingIntent.FLAG_UPDATE_CURRENT);
builder.setContentIntent(pendingIntent);
notificationManager.notify(NOTIFICATION_ID, builder.build());
}
public static void cancelNotification()
{
NotificationManager notificationManager = (NotificationManager)context.getSystemService(Context.NOTIFICATION_SERVICE);
notificationManager.cancel(NOTIFICATION_ID);
}

I think you are looking for ongoing notifications, in that case if you are using NotificationCompat.Builder , you can use :
NotificationCompat.Builder mNotifyBuilder = new NotificationCompat.Builder(this);
mNotifyBuilder.setOngoing(true);

I believe that you are looking for this flag:
Notification.FLAG_NO_CLEAR
Add that flag to your notification.

you try
PendingIntent pendingIntent = stackBuilder.getPendingIntent(0, PendingIntent.FLAG_UPDATE_CURRENT);
notificationManager.cancel(pendingIntent);

Okey, I've realized the code I posted is actually good.
What is happening is that when I'm clicking the notification, it's calling onCreate() again, and then after a random interval it's calling onDestroy().
In onDestroy() I had my cancelNotification() method, so if onDestroy() got called after onCreate(), it removed my notification.
Which brings me to a new question: Why is it destroying and recreating my activity after I've followed every answer I could find on here on how to stop that from happening?
You can find that question here How to make notification resume and not recreate activity? if you want to help me solve it...

I had this issue too. My Solution is the add extra on the function that creates the intent
private void addNotification(String headLine, String info, Context context) {
mBuilder =
new NotificationCompat.Builder(context)
.setSmallIcon(R.drawable.icon) //R.drawable.icon
.setContentTitle(headLine)
.setContentText(info)
.setOngoing(true)
.setAutoCancel(false);
// Creates an explicit intent for an Activity in your app
Intent resultIntent = new Intent(context, MainActivity.class);
resultIntent.putExtra("FROM_NOTIF", true);
// The stack builder object will contain an artificial back stack for the
// started Activity.
// This ensures that navigating backward from the Activity leads out of
// your application to the Home screen.
TaskStackBuilder stackBuilder = TaskStackBuilder.create(context);
// Adds the back stack for the Intent (but not the Intent itself)
// stackBuilder.addParentStack(MainActivity.class);
//Adds the Intent that starts the Activity to the top of the stack
stackBuilder.addNextIntent(resultIntent);
PendingIntent resultPendingIntent = stackBuilder.getPendingIntent(0, PendingIntent.FLAG_UPDATE_CURRENT);
mBuilder.setContentIntent(resultPendingIntent);
mNotificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
// mId allows you to update the notification later on.
// mBuilder.setf |= Notification.FLAG_ONGOING_EVENT | Notification.FLAG_NO_CLEAR;
mNotificationManager.notify(mNotification_id, mBuilder.build());
}
and In MainActivity:
#Override
protected void onNewIntent(Intent intent) {
super.onNewIntent(intent);
if (intent.getBooleanExtra("FROM_NOTIF", false)) {
addNotification(...)
... call the function that adds the notification again ..}
So thing is that the notification turns off after the user press on it, but than you can be notify on the activity that started using onNewIntent(), check the intent over there and if you find out that it came from the notification, set it again.

Android notification Resume Activity

I'm trying to make a notification when users pause my app. So to make it easier, users can go quickly to the application using notificaction. This is the code i'm using. It works for all versions before android 4 and i don't know which is the problem
NotificationCompat.Builder mBuilder =
new NotificationCompat.Builder(this)
.setSmallIcon(R.drawable.ic_launcher)
.setContentTitle("Titulo")
.setContentText("Titulo");
mBuilder.setOngoing(true);
// Creates an explicit intent for an Activity this
Intent resultIntent = new Intent(getApplicationContext(), MainActivity.class);
// put the flags
resultIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);
TaskStackBuilder stackBuilder = TaskStackBuilder.create(this);
// Adds the back stack for the Intent (but not the Intent itself)
stackBuilder.addParentStack(MainActivity.class);
// Adds the Intent that starts the Activity to the top of the stack
stackBuilder.addNextIntent(resultIntent);
PendingIntent resultPendingIntent =
stackBuilder.getPendingIntent(
0,
PendingIntent.FLAG_UPDATE_CURRENT
);
mBuilder.setContentIntent(resultPendingIntent);
NotificationManager mNotificationManager =
(NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
// mId allows you to update the notification later on.
mNotificationManager.notify(mId, mBuilder.build());
So when i press the notification in android 4.0 and higher, the activity is created again instead of resume. any help please, i can't make it work.
EDIT ( forget about manifest singletop )
android:launchMode="singleTop" same result, not working...
My activity contains a map. I'm using the new version of google maps. v2.

I just tried PendingIntent.FLAG_CANCEL_CURRENT and seems to work for me
public void showNotification(String header,String message){
// define sound URI, the sound to be played when there's a notification
Uri soundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
Intent intent = new Intent(this, MainActivity.class);
//PendingIntent.FLAG_CANCEL_CURRENT will bring the app back up again
PendingIntent pIntent = PendingIntent.getActivity(MainActivity.this,PendingIntent.FLAG_CANCEL_CURRENT, intent, 0);
Notification mNotification = new Notification.Builder(this)
.setContentTitle(header)
.setContentText(message)
.setSmallIcon(R.drawable.ic_launcher)
.setContentIntent(pIntent)
.setSound(soundUri)
.addAction(R.drawable.ic_launcher, "View", pIntent)
.addAction(0, "Remind", pIntent)
.setOngoing(true)//optional
.build();
NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
notificationManager.notify(0, mNotification);
}

Use android:launchMode="singleTop" in the manifest declaration of MainActivity

The only solution that actually worked for me after doing a lot of search is to do the following :
NotificationCompat.Builder builder = new NotificationCompat.Builder(this).set...(...).set...(..);
Intent resultIntent = new Intent(this, MainClass.class);
resultIntent.setAction("android.intent.action.MAIN");
resultIntent.addCategory("android.intent.category.LAUNCHER");
PendingIntent resultPendingIntent = PendingIntent.getActivity(this, 0, resultIntent, PendingIntent.FLAG_UPDATE_CURRENT);
builder.setContentIntent(resultPendingIntent);
NotificationManager mNotificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
mNotificationManager.notify(0, builder.build());
this opens your current activiy without creating another one !

SOLUTION provided by #Patrick taken from the question and added as answer:
NotificationCompat.Builder mBuilder =
new NotificationCompat.Builder(this)
.setSmallIcon(R.drawable.logo)
.setContentTitle(getString(R.string.txt))
.setContentText(getString(R.string.txt));
mBuilder.setOngoing(true);
// Creates an explicit intent for an Activity in your app
Intent resultIntent = new Intent(this, Activity.class);
resultIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);
// The stack builder object will contain an artificial back stack for the
// started Activity.
// This ensures that navigating backward from the Activity leads out of
// your application to the Home screen.
TaskStackBuilder stackBuilder = TaskStackBuilder.from(this);
// Adds the back stack for the Intent (but not the Intent itself)
stackBuilder.addParentStack(Activity.class);
// Adds the Intent that starts the Activity to the top of the stack
stackBuilder.addNextIntent(resultIntent);
PendingIntent resultPendingIntent = PendingIntent.getActivity(this, 0, resultIntent, 0);
mBuilder.setContentIntent(resultPendingIntent);
NotificationManager mNotificationManager =
(NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
// mId allows you to update the notification later on.
mNotificationManager.notify(mId, mBuilder.getNotification());