Android :: Which Intent Flags When Setting Pending Intents?
Apr 30, 2010
I have one WidgetProvider but expect the user to have multiple instances of the widget on the home screen. When the user clicks on the widget, an intent is fired to start an activity A passing a String extra (which is specific to that instance of the app widget). Everything works fine unless the activity is already running, in which case the activity is shown in its previous state (and so the intent extra data is ignored). I've tried using various Intent flags (like FLAG_ACTIVITY_NEW_TASK) but they don't seem to help.
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Nov 7, 2009
I have some code that is creating and removing alarms, and which works great in Android 1.5 and 1.6 but breaks on the Android 2.0 AVD.The code that's giving this exception is: Code...
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Nov 8, 2010
I am running into a peculiar issue with an app which has multiple Activities.I have a screen manager class that is bound to a service.The service polls a server for data.The screen manager starts Activity A, B, or C, based on the data.It will also allow the user to select to display the other Activities or it may swap out an Activity automatically based on new data from the service.Currently all the navigation works great and if the user presses Home, the applicable Activity comes back to the foreground when the user presses the apps icon from the Android home screen or the recently run apps list.I then had to implement a new feature to display an icon and notification.I first implemented this by only displaying the notification when the Activities were no longer visible by setting it in each Activities on Pause.Worked like a charm and gave the user a third option to redisplay the app after Home button press.However if the data from the server (when the app is not displayed) causes the screen manager to update the Activity to be displayed I have issues. I think my Activity stack is getting screwed up.I have since tried a little different model where the screen Manager handles the notifications and always displays the notification, updating it with a new Intent whenever an Activity is updated, but its still not cutting it.
When the app is minimized and the data changes I can see the screen manager call the startActivityForResult on the new Activity and it seems like Android knows we are minimized and does not display the Activity. I can then also the screen Manager call to finish on the old top Activity.Each Activity currently has the flag set to singleTop in the manifest and FLAG_ACTIVITY_SINGLE_TOP in the code. When the data hasn't changed on the server, I pull the app back up using any of the above I get what I expect and the Activity's onNewIntent is called. However when the data has changed and the user calls up the app via the notification it calls the Activities onCreate. The Activity does come up and runs, but then pressing back takes me to what seems like another instance of the same Activity instead of exiting. I just took a closer look at my logcat and I see 2 calls to the Activity's onResume, but then no doubles after that.
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Apr 26, 2010
I've asked here a question about Task Killers and widgets stop working (SO Question) but now, I have reports of user that they don't use any Task Killer and the widgets didn't work after a while. I have a Nexus One and I don't have this problem.I don't know if this is a problem of memory or something. Based on the API: So, I don't know why widget stop working, if Android doesn't kill the Pending Intent by itself, what's the problem? Code...
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May 13, 2010
I would like to show a notification that displays the progress of an ongoing operation. That works well for me. But at the same time the remote view should contain cancel button to stop the ongoing operation. The usual content intent should still do something else, i.e. not cancel the ongoing operation. It seems though that I can only have one intent. Code...
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Nov 19, 2009
In my app, user starts a service and shows a notification from activity A. The notification creates a Pending Intent that will invoke activity A should the user tap on it. The problem with this behavior is that, if the user starts the service (which shows the notification), drags down the notification bar, then taps the notification, I now have two activity A's in the display stack, one on top of the other and both exactly the same. How can I re-use the original activity A in this situation so the user isn't duplicating activities?
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Sep 8, 2010
in order to save some battery, I was wondering what happens if an activity registers a requestLocationUpdates and then the user (or the os) puts it in background or kills it. Will the location manger still be active and then will the pending intent still be fired? In other words, will the location manager still be alive even if its lancher does not exist anymore? I'd really love this scenario because allows me to link an intent service that handles the location updates without bothering of have something always running waiting for good news from location.
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Sep 18, 2010
I have a Widget I am working on, that allows the user to have more then one instance of the widget on his screen. Each Widget ID maintains its own configuration file. However, for some odd reason my code that is responsible for setting up the buttons individually for each widget id is not working, only the first widget id is linked to each individual widget. Below is the code that is responsible.
private void TieClicks(Context context){
RemoteViews rViews;
PendingIntent editPendingIntent= null;
// Intent updateintent = new Intent(context,SyncNoteWidget.class);
// updateintent.setAction(SyncNote_Action_Widget_Update);
// PendingIntent pendingupdateintent = PendingIntent.getBroadcast(context, 0, updateintent, 0);
// rViews.setOnClickPendingIntent(R.id.widgettextview , pendingupdateintent);
// AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(context);
int[] ids = appWidgetManager.getAppWidgetIds(new ComponentName(context, SyncNoteWidget.class));
for (int i =0;i< ids.length;i=i+1){
int wId = ids[i];
rViews = new RemoteViews(context.getPackageName(),R.layout.widget);
editPendingIntent = makeControlPendingIntentActivity(context, wId);
Log.v("syncnote", "tieing " + String.valueOf(wId));
rViews.setOnClickPendingIntent(R.id.widgeteditbutton, editPendingIntent);
appWidgetManager.updateAppWidget(wId, rViews);
editPendingIntent= null;
} }
private PendingIntent makeControlPendingIntentActivity(Context context,int appWidgetId) {
Intent active = new Intent(context, EditNote.class);
active.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK );
active.setAction(com.ntu.way2fungames.syncnote.SyncNoteWidget.SyncNote_Action_Edit);
active.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);
return(PendingIntent.getActivity(context, 0, active, 0 ));
}
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May 20, 2009
I've had an issue where no matter how I've tried to set it up I'm finding the Broadcast Receivers aren't receiving any Pending Intents. A look through LogCat confirms that the intents are launched, but they're not being executed. I managed to make a simple(ish) repro case. If you take the SimpleWiktionary widget by Jeff Sharkey http://code.google.com/p/wiktionary-android/ and make the following changes plus any required imports. Code...
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May 11, 2010
Let's say I have a background service that performs several tasks. As it completes task A, it posts notification A with a certain intent and some extra data that indicates viewing result of A. As it completes task B, it posts notification B with a certain intent and some extra data that indicates viewing result of B. As it completes task C, it posts notification C with a certain intent and some extra data that indicates viewing result of C. At the end, the notification area has three notifications. Each one has the same intent, except for one of the extra data fields. I would expect that each one would load my activity with different extra data. They don't. When onNewIntent is called, each has the extra data field set to C. I have rooted out any possible aliasing and checked the data as it is placed into a notification. It seems to allow only one set of data per package. Is what I am attempting not possible? Has anyone accomplished what I am attempting? For example, have you had a service download several large files, and then had notifications that would open each of those. Code...
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Mar 16, 2010
Is it ok to drop Pending Intents in android if they are never used. Such as in an AppWidgetProvider where a Pending Intent that was never used be overwritten by a new Pending Intent. Or should we call cancel on all unused Pending Intents to clean up memory appropriately?
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Feb 17, 2010
Please clarify me What is Pending Intent with an example.
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May 11, 2010
I am newbie to Android. I read the Android documents. Can anyone tell me what "Pending Intent" is?
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Oct 29, 2009
I've started using an AlarmManager for some tasks i'm doing and while setting up the pendingIntent to be broadcast I noticed there is no receiverPermission option. Can anyone tell me is it possible to set the receiver permission on a pendingIntent?
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Aug 18, 2010
That message can occurr if the receiving code crashes or takes too long. I am writing an appwidget for my application, there are like multiple pending intents are there to launch an activity or receive a broadcast. The Problem I am facing is , some times I get exception saying that the Pending Intents cannot be delivered. And the widget does not responds to the touch from the user. please help me. I am not able to find any alternative also.
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Jun 9, 2010
I have a alarm thing going on in my app and it launches a notification that then when pressed launched an activity.The problem is that when I create more than one alarm then the activity launched from the notification gets the same extras as the first one. I think the problem is either with the intent i put in the pending intent or in the pending intent itself. I think I might need to put a flag on one of these but I dont know which one.The "details" extra is the same to every the next time a notification happens instead of having the different value.Until I set the intents I am sure that the correct value goes to the "details" so its a problem of getting the first intent everytime i press any notification. How can I make it to launch the correct intents?
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Jun 28, 2010
I would like to create some home screen app widgets that are entry points into an application. I can put a button in the app widget that uses setOnClickPendingIntent to start the activity. The problem occurs when I want to have two of these app widgets that are entry points to different parts of the activity. I need to be able to pass data into the activity that will distinguish these. Since both app widgets use a Pending Intent that starts the same activity, the two Pending Intents are shared and I can't reliably set extras for the corresponding intents.
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Sep 16, 2010
I created a widget that when clicked activates a PendingIntent.The problem is when I have more than one widget on the screen only the latest one will start the PendingIntent.I have read some about a unique request code, but not figured this out.Any ideas how I can have multiple widgets and the PendingIntents work for each?
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Jul 5, 2010
I've read many posts on the same topic and tried all the given solutions without getting the result I want.The program should start an intent with extras from a notification.The problem is that when a new notification is shown, the extras added to the intent is the same as in the first notification. I've triend with differnt flags in both the intent and the pending intent, without result. What am I getting wrong?If i just launch the same activity (and the same extras) with a button, everything works as it's supposed to.
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Jun 29, 2010
A few days ago I was struggling to find a way to use custom intents for my alarms. Although I got clear answer that I have to customize the Intents based on some unique ID eg. setAction() still have some problems.This can happen more than once for a contact. And when the second message is generated, the notification is raised well (message is fine there) but the intent when the user actions the notification it uses old data, so previous message is passed and not the brand new message.So someway the intent is caching and reusing previous extras. How can I make it unique per contact and per action?
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Aug 16, 2010
In my application i have created pending intent which calls another activity (after 20mins of alarm off) with the help of alarm manger. It should happen each time for each new pending intent or when I call that activity. But when i create one pending intent and after few mins again create new pending intent ,then the last one overlap the other previous pending intents and start specified activity only for ones for the last pending intent.I want that each time i create any pending intent it should start specified activity after 20 mins of it's alarm off time.How it can be done ?
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Feb 22, 2009
I've been grappling with an issue all day.
I am trying to create a program to deal with .torrent files that are clicked on and/or downloaded by the browser. Currently the downloader reports "Cannot download. the content being downloaded is not supported on the phone"
Im fairly sure this is doable as i recently encountered the same issue with pdf files untill i installed a pdf reader.
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Oct 23, 2010
I want to active and deactive the GPS when I touch a button, without I must run the intent that bring me into setting menu for active or deactive GPS.
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Jan 11, 2010
I'm trying to catch an action like ACTION_HEADSET_PLUG. But I think it might be too much to set this action on the manifest file.
How could I register a listener for this action? I only need to care about it when my application is running not all the time as I think it would happen when registering it under the manifest file...
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Aug 3, 2010
I have a program that sends a broadcast Intent that needs an "extra" value.The value is declared as being of type Object[], though I know that the elements are always of type Integer or String.That's part of an API not under my control. What's the most concise and/or efficient way to do the equivalent of the putExtra call below?
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May 17, 2010
I want to add -Xlint:deprecated to the java compiler while building android app.I've seen the compilerarg tag inside javac tags, but the generated build.xml for the standard project doesn't have such a tag.
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Sep 15, 2010
I have a repeating alarm setting, I have the activity being launched, the piece I'm missing is having this triggered after x minutes of inactivity.
I'm considering keying off of SCREEN_OFF in a service and then setting an alarm and canceling it on SCREEN_ON, does anyone have an intent or other suggestion for this. I've considering polling for tasks, all kinds of pieces but I'm stuck.
Requirement:
- App launches, alarm is set to relaunch app after 5 minutes, user exits/app exits after one minute
- alarm triggers, detects phone is in use, resets alarm to trigger in fives minutes
- if phone is idle relaunches app for one minute
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Oct 19, 2010
im following the tutorial from developers guide but i have a problem tutorial says: "To clear the status bar notification when the user selects it from the Notifications window, add the "FLAG_AUTO_CANCEL" flag to your Notification object" buT how i can add the flag to my notification?notification doesn't have any kind of function to add flags then? how i can do it?
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Aug 13, 2009
I'm writing an application that demonstrates various gesture algorithms, and Toast after each one is detected. of course if the user goes all hogwild then the Toasts back up. can i flush the Toast queue somehow?
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Sep 30, 2009
Is there a way to access pending notification or the previous notification that my application created?When I use Notification manager and use its setLatestEventInfo() method the last notification (with same intent) is updated. This is exactly what I want but when I update the notification, I want to access the existing notification's intent and get the key/value paris (Extras) and use that information to update the notification. For example in an SMS notification, I want to to get the current message (key/value pair or message itself) and update that with the new value. ( For giving the number of notifications, I can use the Notification.number, but that I want to access more values). One workaround that I am thinking is to put the data of first notification in database or in preference and access it when the second notification comes. But this is not exactly what I want, it is easier to use the existing notification instead of storing in database or preferences. Related Question: What do you suggest I use, Database or Preferences? Is there a best practise in terms of performance and elegance?
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