Hi all,
I am implementing a notification in a service which when clicking on the notification once it appears - It opens an activity.
I have this code in my service class inside a runnable that runs nonstop every few seconds:
NotificationCompat.Builder builder = new NotificationCompat.Builder(this)
.setSmallIcon(android.R.drawable.ic_dialog_email)
.setContentTitle(notificationTitle)
.setContentText(notificationMessage);
NotificationCompat.BigTextStyle bigText = new NotificationCompat.BigTextStyle();
builder.setStyle(bigText);
Intent resultIntent = new Intent(this, openemailactivity.class);
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, resultIntent, PendingIntent.FLAG_UPDATE_CURRENT);
builder.setContentIntent(pendingIntent);
Notification notification = builder.build();
notification.flags = Notification.FLAG_AUTO_CANCEL;
NotificationManagerCompat notificationManager = NotificationManagerCompat.from(this);
notificationManager.notify(0, notification);
In my notification activity named "openemailactivity" I have a button which has a code in it to return the user to the home activity called "MainActivity":
btnReturnToMainScreen.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
Intent intent = new Intent(getApplicationContext(), MainActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(intent);
}
});
Everything works fine until I restart my Android phone, the service loads on boot (as intended) and then generates a notification and then I click on it.
Then, when I click on it, the "openemailactivity" activity opens well also as intended, and then I click the button that opens the "MainActivity" (The above code) and it does that O.k.
And now the problem starts !
After this other activity was opened ("MainActivity"), and then the notification pops up again by the service (Notification timer\checking runs in a timed Handler\Runnable that runs nonstop) - and then I click on the notification itself that was created -
the activity that it should call ("openemailactivity") is not called anymore ! instead - the last called activity pops up ("MainActivity"), which is wrong !
The problem starts only when I restart my phone, the service loads on boot, notification is generated, I click on it, It opens the right activity, and then I call the code from the button (OnClickListener).
I don't have a clue on how to solve this problem.
What do you think can be the problem ?
What am I doing wrong and how can I solve it ?
Thanks for any reply.
Strange but it looks like I found an answer (Hopefully - It needs to get more comprehensive testing since Surprises always exist in this environment).
I tried to set:
resultIntent.addFlags(FLAG_ACTIVITY_CLEAR_TOP);
in the notification code that exists in the service, right after declaring this variable (resultIntent).
As for now it looks like it works !
By looking at the Android documentation for this flag, it looks like it may explain the problem that I had:
https://developer.android.com/reference/android/content/Intent.html
(Search for the explanation of: "FLAG_ACTIVITY_CLEAR_TOP").
Related
I had this piece of code that was working nicely not long ago:
Intent browserAction = new Intent(Intent.ACTION_VIEW, uri);
browserAction.setData(uri);
browserAction.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(browserAction);
It's inside onReceive of a BroadcastReceiver, to trigger the browser from a notification action (a PendingIntent that also do other things). For some reason (android update maybe) it now only works when I read the notification with my app in the foreground. If I'm outside my app and click the notification action, the browser isn't being called.
Any ideas of what may be happening and what I should check?
EDIT: If I do a PendingIntent directly from Intent.ACTION_VIEW (instead of using Intent.ACTION_VIEW inside a BroadcastReceiver) the action is fired nicely even outside the app. But I can't rely on this since my BroadcastReceiver did other things after calling the browser.
You need to use pending intent instead of simple intent. because notification only triggers pending intents usually while your app is in the background.
so, please try this code.
Intent browserAction = new Intent(Intent.ACTION_VIEW, uri);
browserAction.setData(uri);
browserAction.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
// Create the PendingIntent
PendingIntent notifyPendingIntent = PendingIntent.getActivity(
this, 0, browserAction, PendingIntent.FLAG_UPDATE_CURRENT
);
UPDATE
this answer will be useful for you. please refer to this.
refer this
I have some code that sends out a notification that a download is completed, when this notification is clicked, I want it to restart my activity.
Currently, the notification is created in a BroadcastReceiver. This is the section where I added the Intents to the notification.
NotificationManager nm = (NotificationManager)getSystemService(Context.NOTIFICATION_SERVICE);
Intent resultIntent = new Intent(context, CurrentActivity.class);
resultIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK );
PendingIntent resultPendingIntent = PendingIntent.getActivity(
context,
0,
resultIntent,
PendingIntent.FLAG_UPDATE_CURRENT);
Notification.Builder builder = new Notification.Builder(getApplicationContext());
builder.setContentIntent(resultPendingIntent);
Right now what this does is destroy my CurrentActivity by calling the onDestroy() method, then calls onCreate() to create a new instance. This is an issue for me as my onDestroy() unbinds my BoundService from my activity. I would much rather have my Activity just restart (onStop() then onRestart() then onStart()) so my onCreate() and onDestroy() methods can handle the binding and unbinding and my onStart() method handles the changes to the UI.
Is there a way to do this?
I think you might consider setting the intent flags differently to achieve the behavior that you want.
resultIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);
Handle your UI changes in your onResume activity if required. Hope that helps.
Try to set your activity flag to be
resultIntent.setFlags(Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
See the flag official document from here: https://developer.android.com/reference/android/content/Intent#FLAG_ACTIVITY_RESET_TASK_IF_NEEDED
If set, and this activity is either being started in a new task or bringing to the top an existing task, then it will be launched as the front door of the task. This will result in the application of any affinities needed to have that task in the proper state (either moving activities to or from it), or simply resetting that task to its initial state if needed.
From docs I understand that our program goes to background when we open another_one then after a while android will call onDestroy() to take back it's resources ; But our program is kind of watcher (imagine we have a mediaplyer which playes music in backGround) and it should not be closed until int programState == 1 (There is a power button which ends the player or watcher ) . Besides I learned that we can stay foreground with "Notification" which is so cool (But I don't know how) ! Here is a notification code:
in Activity's onCreate(){
//> reading some data and define some initial values .
mNM = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);
Notification app_notfiy =addNotification();
//> still should perform somehing ?!?
}
private Notification addNotification() {
NotificationCompat.Builder builder =
new NotificationCompat.Builder(this)
.setSmallIcon(R.drawable.ic_launcher_new)
.setContentTitle(getText(string.app_name))
.setContentText("> This is a notification !?")
.setUsesChronometer(true)
;
Intent notificationIntent = new Intent(this, MainActivity.class);
PendingIntent contentIntent = PendingIntent.getActivity(this, 0, notificationIntent,PendingIntent.FLAG_UPDATE_CURRENT);
builder.setContentIntent(contentIntent);
return builder.build() ;
}
But here we have 2 problems . First I don't think notification is really attached to Activity (Maybe it needs some permissions or use service not sure !? ) ! Next I want notification to resume app not restart it !? (I think it starts activity from onCreate() ) How force it back to where we were ?
I've searched alot but still couldn't find good answers about this . Any Idea ?
To achieve this you have to use a Service. Have a look at this tutorial.
You can start the service as a "foreground service", which runs in the background and will hardly ever get killed by the system.
To do this, call startForeground(id, notification).
I'm having a bit of a problem, and having looked in many places I can't seem to find an answer.
I have a service, this service checks for notifications on a site and alerts the user of a new notification. When the user clicks this notification, it should bring them to an Activity (I'll call this CommentActivity)
However, if I click on the notification inside of the app, nothing happens. If I click on the notification outside of the app, it opens up the last activity shown before the app was closed.
Here is my code for displaying the notification:
Notice n; //Notification from site
....
Intent nIntent = new Intent(Intent.ACTION_MAIN);
nIntent.setClass(getApplicationContext(), CommentActivity.class);
nIntent.putExtra("activity_id", n.getFeedID());
nIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_REORDER_TO_FRONT);
PendingIntent pIntent = PendingIntent.getActivity(getApplicationContext(), 0, nIntent, PendingIntent.FLAG_UPDATE_CURRENT | PendingIntent.FLAG_ONE_SHOT);
NotificationCompat.Builder mBuilder =
new NotificationCompat.Builder(FlankNotificationService.this)
.setSmallIcon(R.drawable.ic_launcher)
.setContentTitle(n.getTitle())
.setContentText(n.getText())
.setContentInfo(arg0.getNotificationAmount() + " notification" + (arg0.getNotificationAmount() == 1 ? "." : "s."))
.setContentIntent(pIntent);
Notification mm = mBuilder.getNotification();
mm.flags = Notification.FLAG_ONLY_ALERT_ONCE | Notification.FLAG_AUTO_CANCEL;
mm.tickerText = n.getText();
....
mNM.notify(1558, mm);
So instead of opening up the CommentActivity, it will either resume the app (if the app is not opened) or do nothing (if the app is opened)
Thank you.
Edit 1:
Added Intent.FLAG_ACTIVITY_REORDER_TO_FRONT flag to Intent. Still does not fix the problem.
Edit 2:
I found the cause of my problem (which was a rather silly cause). When the CommentActivity starts, if it does not get passed any data from either the savedInstance or the Intent.getExtra, then it will just close out. The reason why I did not think of this at first was because it didn't even show the transition. After fixing the Intent.getExtra problem it now works. Thank you for all the answers.
You may want to add the Intent.FLAG_ACTIVITY_REORDER_TO_FRONT flag to your Intent. This will ensure that the CommentActivity is the resumed and active Activity when the intent is handled.
I am triying to do the following:
My app has an AsyncTask that eventually creates an AlertDialog to request the user to isert a code. This can happend when the app is in the foreground, so I launch a notification to inform the user and my idea is that once he clicks the notification, the main activity with the AlertDialog is shown.
Nevertheless what is happening is that once the user clicks on the notification, just the activity where the AlertDialog is supposed to be is shown and I get a WindowLeaked exception probably caused by the Dialog.
There is the code that I am using to launch the notification (from the method onProgressUpdate of the AsyncTask):
public void launch_notification(){
NotificationCompat.Builder notificationBuilder =
new NotificationCompat.Builder(context)
.setSmallIcon(R.drawable.ic_launcher)
.setContentTitle(context.getString(R.string.opening_request_notification_title))
.setContentText(context.getString(R.string.opening_request_notification_text));
/* The intent must be created with an specific content and then frozen to be used
later using a pending intent.
*/
Intent notificationIntent = new Intent(context, Main.class);
PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, notificationIntent, 0);
notificationBuilder.setContentIntent(pendingIntent);
notificationBuilder.setAutoCancel(true);
NotificationManager notificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
notificationManager.notify(NOTIFICATION_ID, notificationBuilder.build());
}
Any idea will be welcome.
Thanks a lot :)
Better to create a separate Activity(example DialogActivity) and in your manifest set for DialogActivity.
Your notification creation seems fine and you invoke the method from onProgressUpdate which is also fine.
So there must be something wrong with your activity and the way it handles the dialog.
If you could provide your Main class we could know for sure, but what I guess is happening that in your AsyncTask you show some sort of dialog, perhaps a progress dialog.
If that is the case then when you get the notification (on progress update) and you click it you start Main activity again, so you end up creating another instance of main activity, and hence the leaking window.
Try adding the flag FLAG_ACTIVITY_CLEAR_TOP.
As the API states:
If set, and the activity being launched is already running in the current task, then instead of launching a new instance of that activity, all of the other activities on top of it will be closed and this Intent will be delivered to the (now on top) old activity as a new Intent.
Hope that this will help you out.