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android - How to show a dialog when click on notification

I get notification in my application through BroadcastReceiver, The question is , How can I parse data to an activity and make a dialog with the received data ?
this is my code but when I click on the notification , nothing happens :
NotificationManager notificationManager = (NotificationManager) ctx.getSystemService(Context.NOTIFICATION_SERVICE);
Intent notificationIntent = new Intent(Intent.ACTION_VIEW);
notificationIntent.setData(Uri.parse(link));
PendingIntent pending = PendingIntent.getActivity(ctx, 0, notificationIntent, Intent.FLAG_ACTIVITY_NEW_TASK);
Notification myNotification = new NotificationCompat.Builder(ctx)
.setSmallIcon(R.drawable.ic_launcher).setAutoCancel(false).setLargeIcon(remote_picture)
.setContentTitle(onvan).setStyle(new NotificationCompat.BigTextStyle().bigText(msg))
.setContentText(msg).setContentIntent(pending).build();
notificationManager.notify(1, myNotification);
I've some variablese like link , msg, onvan that contains my data and I need to send these variables to an activity and make a dialog .
How can I do so ?

Try this:
Intent notifyIntent = new Intent(context,YourActivityClassHere.class);
notifyIntent.setFlag(Intent.FLAG_ACTIVITY_NEW_TASK);
//UNIQUE_ID if you expect more than one notification to appear
PendingIntent intent = PendingIntent.getActivity(SimpleNotification.this, UNIQUE_ID,
notifyIntent, PendingIntent.FLAG_UPDATE_CURRENT);
just make the PendingIntent open up one of your Activities and have your Activity be complete transparent and just open a Dialog.
EDIT: IF you want to open an Activity from notification click event:
Assuming that notif is your Notification object:
Intent notificationIntent = new Intent(this.getApplicationContext(), ActivityToStart.class);
PendingIntent contentIntent = PendingIntent.getActivity(this.getApplicationContext(), 0, notificationIntent, 0);
notif.contentIntent = contentIntent;
For more detail visit here. Android - Prompt Dialog window when touch on Notification

You can send data from your notification to another Activity using method putExtra and put this
PendingIntent pending = PendingIntent.getActivity(ctx, 0, notificationIntent, PendingIntent.FLAG_CANCEL_CURRENT));
inplace of this
PendingIntent pending = PendingIntent.getActivity(ctx, 0, notificationIntent, Intent.FLAG_ACTIVITY_NEW_TASK);`

PendingIntent resume activity

I have an Android activity that places a Notification in the status bar. Selecting the notification will launch my main activity. The problem is that this PendingIntent always starts a new instance of my activity "MyappMain". So when i start my app by clicking on the notification, i get an new instance of the MyappMain and then i must quit/finish them all one by one (if I clicked multiple times on the notification).
Intent notificationIntent = new Intent(this, MyappMain.class);
PendingIntent contentIntent = PendingIntent.getActivity(this, 0, notificationIntent, 0);
notification.setLatestEventInfo(context, contentTitle, contentText, contentIntent);
mNotificationManager.notify(HELLO_ID, notification);

Please add finish(); before you start a new Intent, this way your current activity will be finished and new one will be started.

You have to set the "FLAG_ACTIVITY_REORDER_TO_FRONT" flag.
notificationIntent.setFlags(Intent.FLAG_ACTIVITY_REORDER_TO_FRONT);

Displaying a notification in android

I am using the following code to show a notification in my android application, but using this, with the notification an activity also shows up (i.e. a black blank screen) I dont want this screen, but just a simple notification and when the user clicks the notification then I want to launch the activity. What should be done to this code?
NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
Notification notify = new Notification(R.drawable.mcube_logo, "Message Sent", Calendar.getInstance().getTimeInMillis());
Intent intent = new Intent(RecieveAlarm.this, otherActivity.class);
PendingIntent pendingIntent =PendingIntent.getActivity(RecieveAlarm.this, 1, null, PendingIntent.FLAG_CANCEL_CURRENT);
notify.setLatestEventInfo(RecieveAlarm.this, "Title", "Details", pendingIntent);
notificationManager.notify(0, notify);

I suggest you to use:
Notification not = new Notification(idIcon, text, System.currentTimeMillis());
PendingIntent pInt = PendingIntent.getActivity(ctx, 0, new Intent(ctx, the_class_to_call), 0);
not.setLatestEventInfo(ctx, app_name, text, pInt);
and then not.notify....

use AlertDialog, then launch your desired activity on positive button click

android:how to open the app on clicking on push notification

I have implemented the push notifications using C2DM code in my project. It is showing push notifications But my problem is how to open the app on clicking on the push notification.
I am doing it like:
Intent intent = new Intent(context, BingoDiaryActivity.class);
intent.putExtra("registration_id", registrationId);
PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, intent, 0);
notification.setLatestEventInfo(context, "Registration", "Successfully registered",
pendingIntent);
notificationManager.notify(0, notification);
But it is not working
Can anyone helps me over this?
Thanks

I can't understand what's wrong with you code, but in my project works this - and clicking on notifier open my app:
n.setLatestEventInfo(context, "text", "text",
PendingIntent.getActivity(
context,
0,
context.getPackageManager().getLaunchIntentForPackage(context.getPackageName())
.putExtra("extra_name", extra),
0));

How can I cancel a notification when the user clicks on it?

I would like to create a notification that clears automatically when the user presses it and has no other behaviuour. The notification below works fine but when i press on it it takes me to the activity "MyActivity" (even having to define an intent seems a bit unecessary when I don't want to use it...)
Using FLAG_AUTO_CANCEL doesn't seem to have any effect at all.
Update: Sorry, I have found the FLAG_AUTO CANCEL does work, that is the notification is cleared from the status bar. I guess I am really tring to write an intent that does nothing (or completely delete the intent).
Code...
Notification notification = new Notification(R.drawable.success, res.getString(R.string.messages_sent), System.currentTimeMillis());
//Define the expanded message and intent
Context context = getApplicationContext();
CharSequence contentTitle = res.getString("My content title");
Intent notificationIntent = new Intent(this, MyActivity.class);
PendingIntent contentIntent = PendingIntent.getActivity(this, 0, notificationIntent, 0 );
notification.setLatestEventInfo(context, contentTitle, mStrSuccessMessage, contentIntent);
notification.flags |= Notification.FLAG_AUTO_CANCEL;
//Pass the notification to the notification manager
mNotificationManager.notify(1, notification);

Use an empty intent without an actual action.
PendingIntent pi = PendingIntent.getActivity(this, 0, new Intent(), 0);

I don't think you can. You can have MyActivity exit immediately though: call finish() from onCreate().