Android :: Stop Service Only When There Are No Other Activities In App Running
Mar 13, 2010
Is there a way I can test if there are any other activities in my app still alive? I am looking to stop a service in an onDestroy method, but only want to do this if there are no other activities from my app still alive on the stack.
I have the call stop the service in the main activity's onDestroy() method. This works perfect EXCEPT that if a user launches my app, then launches a few activities in my app, then hits the home screen and RELAUNCHES my app, they will subvert my order and the main activity will now be above other activities of my app. From this state, if they hit the back button and 'back out' of my home screen they will trigger the onDestroy() method and kill the service even though there are other activities open on the stack. I want to avoid this by stopping the service ONLY if I am sure there are no other activities of mine open on the stack.
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Jan 26, 2010
I am programming a game. I have a service for the background-music. When I press the home-button and leave my activities, the service still runs in background. How can I stop the service, when there is no more visible activity in my program and restart it, when the user goes back to my game (some activity of it)?
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Jan 30, 2010
Is there an API, or a registry I can do in the manifest to make sure my service is being run at the device start up and being shut down before the device shuts off?
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Sep 18, 2010
Ok, so i go to check running services and i see that sprint hotspot is running. i have not started it since the day i bought the phone. i have no intention of using it, for now. why is it running and how can i stop it from starting? is it supposed to be running?
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Jun 23, 2010
I have developed a simple android application, which when started opens a Timer. User is given two buttons, start/ pause. This is working fine.What i want to do is to add a way to support multiple timers when a user swipes his finger on the screen.When he swipes from left to right, a new timer should show up, but the previous timer should not stop. This is a way to add multiple timers.Also, when he swipes from right to left, i want a previous timer to show.This is what i have done so for. I have a timer activity. I have added a touch event on it. When, a person swipes his finger, i get the co-ordinates and decide whether its from left to right or right to left.This functionality is working fine, as i can see the appropriate log messages.The problem is when I'm trying to load Timer Activity.It just loads the previous Activity and doesn't really create a new one (I figured this from the timer).Is there any way to do it?
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Sep 10, 2010
I have an application with many forms implemented as separate activities. The form variables are dynamically built based on a database, and there are a ton of variables in the C++ side of the application (accessed via JNI). I don't see how saving out all of this data to persistent storage each time the onPause() or the onSaveInstanceState() of one of these many activities goes into the background is a smart use of processor time. And I don't see how even if I save the local variables for each activity during that time I'd be able to restore a single activity within the context of all the others.
I have set up a service that auto saves the files when I detect that the app has gone into the background. (I set a time stamp when onPause() is called in any activity and then clear the time stamp when onResume() is called on any other activity. If the time elapsed is more than a few seconds, I know I'm not the top activity any longer and the service saves the files).
What I'd like to do is continue on as normal unless the OS kills one of my activities. Since we don't always get notified of this, I thought it would be nice if there were a way to tell the OS that I'd rather you kill the whole app than just one activity.
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Jun 10, 2009
Can we run two activities on a single screen? if so, then could anyone give me an as to how its done?
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Oct 1, 2010
I have multiple activities in my android app and one final activity "All" which should run all the activities of my app one after the other. When I kept all my activities in for loop and used startactivity(intent) for each activity in that for loop, at the end I could see not all my activities being ran although all activities are finished. Any clue how to implement this?
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Jun 1, 2010
I have a service that listens to the serial port. According to data received from serial i switch between particular service states, and start particular activities on state transitions. I would like to accomplish it in following way: Let's assume there is one active Activity1 started from previous state, I call startActivity from service to start a new one Activity2, but I want to simulatenously destroy Activity1 when Activity2 gets on top of the stack. I tried to call finish() in Activity1.onStop but it seems not to work (Activity1.onDestroy() doesn't get called). I'd prefer to finish Activity1 after Activity2 gets on top in order to avoid blinking.
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Sep 11, 2009
I have a service that's running in the background, is there any way (short of keeping a count of onBind() and onUnbind()) to know the number of activities that are bound to it?
I am trying to provide a "quit" function. all my activities derive from the same base class. I am keeping a global static around that says the "quit" button was pressed. then on each of the activities onResume() method, I look for the global static "quit" variable and if it's set to true, I call "finish()" so my activity shuts down, and then next activity on the task stack appears -- which goes through the same process of checking the global static "quit" variable until it gets to the root activity -- which effectively goes back to the main desktop screen.
However, I need a way to reset the global static "quit" variable, otherwise, when I launch the app again, it will check the global static quit variable and shutdown immediately - never coming back up. So, I want to know if there are any activities bound to my service, if not, I would set the global static "quit" variable back to false so that the app could be relaunched again.
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May 19, 2010
I'm wondering which is the best way to communicate between a Service and an activity..
Broadcast intent
Callback
others?...
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Jun 5, 2010
I have an Android Service that I would like to keep running even after the last Activity has been popped off the stack, or the User has chosen to do something else.
Essentially the Service is listening for changes on a remote server, and I would like to generate a Notification if and only if an Activity from the app isn't running(or visible). In other words, I don't want the Notifications to occur while the User is directly interacting with the app.
In the case where the User is directly interacting with the app, the Service will notify the Activity and update appropriate UI elements based on the changes. I plan to implement this through the Observer pattern.
How can the Service know if none of apps Activities are bound to it?
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Aug 27, 2010
Android: i want to create service by extending a Service class which i start when application get started and all activities can share its state and when i want stop it from other activity and when i want start it again from any activity ?
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Aug 2, 2012
Okay when user presses log out button what's supposed to happen is:
Code:
stopService(myIntent);
unbindService(mConnection);
mIsBound = false;
I need to shut down the service on background.Except the service restarts itself over and over again! Even if I kill the program from task manager the service restarts itself. Other programs aren't using the service. when I uninstalled the program the foreground program information popped up indicating it was STILL there(albeit this I solved by rebooting phone).
When user says he's finished with the program 'least he can expect is for the program to stay down rather than keep eating battery by acquiring GPS signal and sending them to server. The program is not intended to be "once you log in you need to Uninstall me and reboot phone to get rid of me!" type of program!
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Apr 3, 2010
I currently have a service called ConnectionService. It instantiates a Connection object that gives me access to a controller of TCP.
I start the service from a splash screen activity, which sends and intent and starts my "main" activity once a connection has been established. In the "main" activity, I can access my Connection object and communicate with the controller. However, when I start a new activity from the "main" activity and bind to the service, I get a NullPointerException when I try to call methods in the ConnectionService.
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Aug 29, 2010
I want to create an application to remote control my PC.
For example: Volume (get actual volume level, increase/decrease/mute volume), TVtime (start/quit tvtime, get actual channel, toggle fulscreen, channel up/down, toggle input source, toggle aspect ratio), Amarok (start/quit amarok, get current song, prev/next song, play/stop/ pause), etc.
The application for the PC is done (in python). The communication protocol used is very simple.
For example: "volume:get_level", "volume:up", "volume:mute", etc. Now I'm working on the android application.
What I have implemented till now is to create an activity, with: - an edittext to enter host:port - a button to connect/disconnect to/from server - the onCreate method creates a new thread for socket communication to send/receive messages to/from PC. - a textview to display information received from PC (eg. volume level) - a button to send command to PC I'm using handler to communicate between the tcpclient thread and the main activity.
It is working... But I want to use more than 1 activity. I want to use different activity for every program controlled. Searching for a solution to transfer the thread's handler to a new activity I have found that it is not possible, and I have to use a service.
So, my question is: how to send message from different activities to the same service, how to send message from service to the actual activity and how can I check in the service which is the actual activity? Because the service is running in the same thread as the activities I suppose that I still have to create a new thread for socket communication. How can I send the data received by the socket to the service?
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Aug 3, 2010
I have a service component (common task for all my apps), which can be invoked by any of the apps. I am trying to access the service object from the all activities, I noticed that the one which created the service [startService(intent)] has the right informaion. But rest does not get the informaion needed.
My Code is as below:
CODE:................
If I invoke startService(intent). it creates a new service and runs in parallel to the other service.
If I don't invoke startService(intent), serviceObj.getData() retuns null value.
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Jun 29, 2010
I'm trying to refactor/redesign an Android app. Currently, I've one UI activity (Activity 1) that creates a DataThread. This thread is responsible for network I/O and interacts (provides data) with the UI activity via a handler.
Now, I want to add another activity (a new UI screen with Video) - Activity 2. Activity 1 is still the main activity. Activity 2 will be invoked when the user clicks a button on Activity 1. Activity 2's data also comes from the DataThread.
My idea is to put the logic of my DataThread inside an Android Service (DataService). My question is - can more than on activity bind to my DataService at the same time? Is there a way to tell the service to provide data to a specific activity only?
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Mar 16, 2010
I would like to share a cache file across activities, which are running in different processes but in a same application.So, is there any way to make it thread safe (probably not "thread safe", should we call it "activities safe" or "process safe" ?
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May 19, 2010
I'm new to Android development and am working on a small test project. I have a service, which communicates with an SQLite3 database, and two activities. A main activity which fetches database information via the service and displays it and a second activity which allows me to add data to the database via the service.
Currently, I have a singleton class which implements the ServiceConnection interface and I'm binding this to the service in the the main activity using the bindService function. Because it's a singleton, I can then use this service connection in both the main activity and second activity to work with the database and it all seems to work quite well.
However, I'm all the time aware that the service connection is bound to the main activity and I'm wondering if this is the wrong/bad way to do it? Would I be best off having two service connections, one in each activity, and binding each to the service?
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Jun 10, 2010
I have a class A which extends TabActivity and creates Activities B, C and D as tabs in its onCreate() function. Also, class A initializes another service handler class S which is responsible for establishing a connection to a service and implementing callback handlers for the service. Any of the Activities B, C and D should be able to receive events from the service and update accordingly. If I receive any event in class S from the the service then I want to call a function in Activity B which would be responsible to update the UI elements in Activity B based on the event received. You can assume that the user is in Activity B when the event arrives.
Can I call an activity function like the following in the stub handler for the callback in my class S -
CODE:................
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Nov 20, 2010
I have a local Service to which multiple activites needs to bind. In the first launched Activity, bindService returns true and onServiceConnected is called. But in any additionally launched activites bindService returns false, and I can't get a reference to my Service.
How can multiple activities simultaneously be connected to a local Service?
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May 3, 2010
Is there a significant difference in time needed for sending data over a service or by using an intent?
Are there general advices when to use service and when to use intents?
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Jan 15, 2010
I have multiple activities and one service.. In MainActivity I successfully connect to service (using a class what implements ServiceConnection + bindService() + startService()) but when i try to apply same method in other activity i see in LogCat a error... It Is possible to connect to service in an other way: something like to make static my CounterServiceConnection object in MainActivity and use it in the second one?
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Nov 22, 2010
I am designing an app that will have some activities separated in tabs. Some of them will have to perform tasks in the background will the user is in another tab. What is the best strategy for designing an app like this? I was thinking about using a service but it can be killed by android dalvik, isnt it?
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Oct 20, 2010
I have an application that get/send data from/to a remote DB on internet.
I need to get my application working in background mode, then i supose that i have to put all the send/get remote data in a service..... but.... How can this service change values of variables and UI textfields of my activities? i can't find any information about this, all the tutorials i am finding are of simple services that doesn't do something like that.
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Sep 9, 2010
I want to know that how i can get these things in android.Recording of Calls Appointment/Calendar Logging Bookmark Logging Browser History Logging Contact Details Location Through SMS SIM Change Notification and after getting these things in a file (.txt, xml, or CSV) how i can upload these things to my php server by running a backgroud service.Service will now prompt user again and again. Everything will be recorded silently and then user will see this information on server whenever required.
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Jun 17, 2010
I want to stop currently running thread but -Thread.stop() - Thread.destroy() are DEPRECATED so can any one tell me how to stop the Thread .
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Jul 1, 2010
I am having a problem with this app. I may use it in the future, so I don't want to delete it. But it keeps randomly popping up. When I go into my running applications, 8 out of 10 times it is running. I shut it down, and it keeps popping back up. How can I stop it from running on its own? I only want it to run if I manually click on it. Went into application settings and can find nothing to toggle it off with. This happens on a bunch of applications, but Amazon MP3 is the most frequent.
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Dec 11, 2009
I start a service in an activity then I want the service to stop itself after awhile.
I called stopSelf() in the service but it doesn't work.
how to make the service stop itself?
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