Android :: How To Bring Existing Activity To Front Via Notification
Jul 28, 2010
I have one Android application, when it runs a service, I want to show the notification on the status bar. Then the user could navigate to other application by pressing HOME key. However when I try to bring the previous running application back to Front via notification icon, there is some problem with the existing activity. Even I declare it as "Single Top" mode (I want to run the existing activity since there is an associated service running) , somehow that activity's OnDestroy has been called before OnResume. Here is my code of creating the notification object.
CODE:.....................
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Aug 5, 2010
I create an application which displays the notification when the service starts. If an user navigates to HOME screen (without exiting the application), the user could still go back to the previous application by pressing on the notification icon. This is very similar case as the track recording service in Google application "My Track".
I want the existing activity as Single Top activity since it has associated service running. However when my application tries to bring the existing activity to front via notification, the existing activity's onDestroy has been called which causes problem. How can I skip this onDestroy method? Here is my current codes:
CODE:............................
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Apr 14, 2010
Lets suppose that i have an activity A, that activity is moved to background(function moveTaskToBack is used), and after while i want to bring this activity to front again. This code is used: Activity A = getActivity(); Intent i = new Intent(A, A.getClass()); i.setAction(Intent.ACTION_MAIN); i.addCategory(Intent.CATEGORY_LAUNCHER); i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); A.startActivity(i);
Activity is on screen, but when i invoke later moveTaskToBack on A activity, activity is not moved to backgorund. Does anyone know why?
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Mar 17, 2010
I am aware my issue is against the philosophy of Android, but I have no choice, this application will run on a embedded car gps and I need to bring an activity to prevent from car accident, for example, when it's happen around the user. I have to put other activity on the back and bring my alert pop up without user manipulation like notification on the front. Is there a way to bring manually an activity to the front, by resuming it like when you click on the android task switcher?
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Jun 5, 2010
I am trying to bring the InCallScreen to the foreground when clicking on a notification, and am having trouble figuring out how to do so. My application is displaying information about the call and acts like a dialog (where it is translucent, so you can still see whatever is behind it). While in a call, I frequently hit the home button, and pull up other information (such as my contact list to read to someone the person's info). I would like to then click on my notification bar icon and pull up not only my activity, but also the in call phone screen. I know the in call screen has it's own icon in the notification list, but I would like to reduce the number of clicks to get back. code...
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Mar 23, 2009
I created a RelativeLayout which has 2 SurfaceView. The layout looks like below code...
It seems that the main surface is always above on pip surface even put the pip definiation before the main. So how can i change the z-order to bring the pip to front.
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Dec 24, 2012
I am working on developing an app and I am not sure when should I use a new activity and when should I update the existing view.
For example, lets say I have a view that shows a multiple choice question.Now, when the user selects his choices and clicks on say "Evaluate", I want to show the same question view but along with the right answers and explanations for each option. So does that mean, I should send an Intent upon a click on Evaluate or I should just update the view (i am not sure how)?
If I send an intent and show a new screen, how can the user go back to the next question without displaying the answers? If I don't create an new activity, how can I update the existing view that is already displayed?
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Mar 26, 2010
If my app is already running, then either Activity1 or Activity2 might be currently on top. How to construct an Intent so that it will simply show whichever Activity is already on top (in the task)? Just like if you touch an icon in the Recent list (long-press home). At the moment, it looks like (for explicit Intents) you need to be explicit about the Activity to launch. But I would rather be explicit about the app (package name). FWIW, I'm thinking of Intents triggered via Notifications.
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Feb 9, 2010
I defined an activity ExampleActivity.
When my application was launched, an instance of this activity was created, say it is A. When user clicked a button in A, another instance of ExampleActivity, B was created. Now the task stack is B, A, with B at the top. Then, user clicked a button on B, another instance of ExampleActivity, and C was created. Now the task stack is C, B, A, with C at the top.
Now, when user click a button on C, I want the application to bring A to the foreground, i.e. make A to be at the top of task stack, A, C, B.
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Apr 3, 2010
I'm having difficulties handling multiple instances of my root (main) activity for my application. My app in question has an intent filter in place to launch my application when opening an email attatchment from the "Email" app. My problem is if I launch my application first through the the android applications screen and then launch my application via opening the Email attachment it creates two instances of my root activity. steps: Launch root activity A, press home Open email attachment, intent filter triggers launches root activity A Is it possible when opening the Email attachment that when the OS tries to launch my application it detects there is already an instance of it running and use that or remove/clear that instance?
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Apr 27, 2010
I'm creating notifications in my Android application, and would like to have an option in my preferences to set what sound is used for the notification. I know that in the Settings application you can choose a default notification sound from a list. Where does that list come from, and is there a way for me to display the same list in my application?
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Sep 22, 2010
How to bring stop activity to foreground (restart) by itself?i use Broadreceiver and intent to restart my activity.but always start two activity (include original activity)how to restart my original activity?
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Aug 4, 2010
I have activity A that starts activity B which starts activity C
A -> B -> C
When a user clicks on a button in activity C, i want to bring A to the top of the stack and take B & C completely out of the stack. Is there a way to do this ? ?
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Oct 19, 2009
In my application i wait on socket for network events.On some events i have to bring activity into foreground(make activity as running) if at all it is not in the foreground.
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Sep 25, 2010
My Activity is running on the foreground and my Activity is getting pushed to background when I hit on the home button... I am trying to display the pop up at certain intervals, in this case as my activity is running on background when I try to display the pop up but thats not shown on the foreground.
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Feb 28, 2010
My app has 2 activities - A and B. From homescreen I launch A, from A I launch B. The activity stack looks like this: A-B. Now I press HOME button, and from homescreen click again on my app icon, which launches A and adds it on top of the activity stack, which now looks like this: A-B-A. But I just want to bring my application to foreground, is that possible in Android?
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Nov 12, 2010
I'm struggling with my app that launches multiple instances of the same Activity using the same intent. My main activity is of class type A and it does a startActivity() of two children that are of the same class type B. So we have B1 and B2 launched. If B1 and B2 are both paused (by pushing back button and making sure finish() is not invoked on them so they are truly paused), how can A uniquely bring either B1 or B2 to the foreground again? I do want to launch a new B activity. I want to uniquely bring B1 or B2 to the foreground.
so both B1 and B2 were created like this... Intent intent = new Intent(context, B.class); intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); startActivity(intent);
Now I want A to bring B1 (or B2) to the foreground/front so I use the below code, but how do I distinguish B1 or B2 when starting the activity? This only brings the last instance of B that was on top to the foreground.
Intent intent = new Intent(context, B.class); intent.addFlags(Intent.FLAG_ACTIVITY_REORDER_TO_FRONT); startActivity(intent);
I've tried keeping around references to B1 and B2 and doing something like this, but this also only goes to the last instance of activity class B that was on top...
Intent intent = new Intent(B1context, B.class); intent.addFlags(Intent.FLAG_ACTIVITY_REORDER_TO_FRONT); B1context.startActivity(intent);
I even tried this, but it still doesnt get me my unique B1 or B2... Intent intent = B1.getIntent(); // i.e. the original intent that started me startActivity(intent); // still only brings to front the last B that was on top.
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Jun 25, 2013
How to bring back the message notification numerals? i.e. I used to get a 1 or 2 on my phone when a message or two came in, showing the number of new messages. It has now disappeared and I cant find the information under Display, gestures & buttons to get it back. There is only 'notification flash' there but not like 'numerical notification'. I am in Australia and have been to my local Telstra store yesterday but they were not able to quickly bring it back. They said to wait for a technician but I did not have time to hang around.
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Sep 13, 2010
I am having two activities, say activity A and B. Activity A is an ListActivity, and when the items in the list is selected, it will call startActivity() to bring up B. The problem here is that when I am in B and click the home key, and then go to the application launcher to resume my application, A will be brought up again. This time when I click a different item in A, it will bring up B with the old data of the previously selected item before the home key was clicked.
After examinzing the code, I found that the startActivity does not update the intent of B. I found a post here about the similar question, and the answer was to overwrite the onNewIntent. However, I found that it doesn't work, because this method never get called when the second time I call startActivity. I am sure that this is the same instance, because I've printed out the instance number. Is there any other ways to update the intent of the activity? Or I need some other settings to make the onNewIntent get called? I didn't set any flags or launch modes, so everything is default.
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Jul 21, 2010
Suppose my application P started Activity A, and A started Activity B, then the activity stack contained A and B, with B at the top.
After that, I opened other apps by pressing Home button. Suppose after a while, the process of application P is killed by the OS. Then, I press Home button to select application P. At this time, which activity will be brought to the front, Activity A or Activity B?
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Jun 28, 2010
I would like to launch an intent when any of my activity is visible, otherwise I will put it up as a notification, and will be fired by the user. To decide this, I need to know if any of my activity is front-most, how do I that?
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May 21, 2010
For those (very very few of us) who have played with the Evo, can you tell me if there is an LED notification light on front?I am referring to when you get a new text message, or a missed call, so you dont have to turn on the screen.
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Apr 20, 2010
I have an application consisting of two activities (call them Display and Preferences) and one service which listens for incoming phonecalls. When it detects one it launches the Display-activity with a delay of 3sec in order to let the PhoneApp launch first. The Display- activity is transparent so the user can still use the PhoneApp as normal (ie answering the call) even though my Display-activity is "on top". So far so good
Now to my problem. Lets say that the Preferences-activity is active when there is an incoming call. The PhoneApp is launched on top of the Preferences-activity as expected. However when the Display-activity is launched the Preferences-activity pops up as well, hiding the PhoneApp. My question is if it is possible to work around this in some way? Since I do not want my Preferences-activity to block the PhoneApp and hence making it impossible for the user to answer the incoming phone call.
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Sep 23, 2010
I have a very simple android project. I got the following error message when I try to run it. The emulator is running but the application doesn't come up. I couldn't find any useful information online.
CODE:..................
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Aug 25, 2010
CODE:..........
Here is the code where the problem lies....
It doesn't give me an error it says exactly this when I run the android emulator
"[2010-08-25 09:12:42 - doppler_test] ActivityManager: Warning: Activity not started, its current task has been brought to the front"
What I think this means is that the intent of the bluetooth function and the button intent is only operation on a hierarchy system. What I mean by this is that if I were to move the button opperator above the Bluetooth stuff the button will work, but currently when the app is run Bluetooth works but when I press the search button nothing happens.
What else may be helpful is my XML code for the button so here it is......
CODE:..........................
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Nov 2, 2010
I want to display a splash screen followed by my trial.class.I am not getting any error but warning as:
Warning: Activity not started, its current task has been brought to the front
I have different-2 approches for this each time this warning is being displayed.
CODE:.....................
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Mar 5, 2010
I have a notification in the status bar for my app.The problem with this is that when you press the home button from the app (pushing it to the background) then press on the notification in the list accessed from the status bar, it starts a fresh copy of the activity. All I want to do is resume the app (like when you longpress the home button and press on the app's icon). Is there a way of creating an Intent to do this?
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Aug 4, 2009
How can i start my own activity when a new notification arrives to our status bar if click that notification my activity should play...
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Apr 9, 2009
When MountService received event from HAL and start a notification, it would display an AlertActivity after user's click. However, I found the AlertActivity is created and can't be displayed.
I got some log as below:
CODE:........
Is it related to "FLAG_ACTIVITY_NEW_TASK"? however, how to solve it?
I've tried to use "launchmode as singleTask", but is doesn't work.
Is there anyone give me a hand? Why my activity can be created but can't be displayed?
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Jul 16, 2009
Can use notification to goto other activity?? eg: from a to b use c.
my a.java code is:
CODE:........
But it dosen't work?
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