Android :: Sending Data From Service To Activity
Sep 23, 2009
I am having issue for sending data from service to Activity through notification , I click a notification a activity get invoked but when i try to add some parameters through bundle i am not able to get the parameters in that called intent , I have gone through the link
http://stackoverflow.com/questions/1198558/how-to-send-parameters-from-a-notification-click-to-an-activity. but still no luck has any body occurred with the same issue.
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Feb 16, 2010
I am little confused with the use of intents used for sending data to activity from service. In my application I have to have startactivity from the service and have to pass data ,so that activity can utilize the data while launching.For this i have written the following code Intent intent = new Intent(Service.this,Activity.class); intent.putExtra("data", data); intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); context.start Activity(); I assume that the data is passed to the activity and can be parsed on the oncreate function of the activity.Now the service running in the background has to pass data to the activity continously for UI updates.For this I have written the following codeIntent intent = new Intent(Service.this, Activity.class); intent.putExtra("Data", data); intent.setAction(Intent.ACTION_ATTACH_DATA); sendBroadcast(intent,null); (Do I need to broadcast the intent???) In activity I have done following things:- Implemented broadcast reciever:private BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { if (Intent.ACTION_ATTACH_DATA.equals(intent.getAction())) { Bundle extra = intent.getExtras(); float Data[] = extra.getFloatArray("Data"); update(Data);
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Aug 13, 2010
I am a bit new to Android. What I need to do is send data back and forth between an activity and a service locally. The information sent is sensitive and must not be able to be picked up by other apps. This excludes using broadcast and the onBind() function if I understand things correctly? So the activity needs to send some string parameters to the service. Also it somehow needs to tell the service which activity started it so the service can reply to the correct class since many different activities will use this service.
Once the service has fetched the information via a http request it is suppose to send that data (just a long string which will later be parsed) back to the activity that started it. How do I go about doing this? Using static variables/functions is not an option since again many actives will be using this service. Sure it would be possible to use a static array to hold the classes but that just seems ugly. It's only possible to send simple variables (not objects) via the intent? There must be a better way to do this.
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Nov 24, 2010
I have an Android Service which copies files to an ftp server.
While it is doing that, I want to send feedback to my Activity so the user knows what happens.
I tried implementing it using the RemoteMessengerServiceSample code, but I have a problem ... All messages I send during the ftp transfer arrive at my Activity the moment the copy operation is finished ... not message by message while the copy job runs as I would like.
Is there any way to fix this? Maybe i'm using the wrong method for sending messages to my activity?
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May 28, 2009
I have two activity Main activity and child activity when I press a button the child activity is lunched. Still now I have no problem. I want to send some data back to the main screen. I used The Bundle class but it is not working. It throw some run time exception.
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Feb 19, 2009
I have a newbie question which is puzzling me regarding using Intents to start a new Activity but passing some data with the Intent for the new Activity to use. My app has (say) MainActivity from which I want to launch a second activity, SecondActivity, within the same app, whilst I pass an integer parameter to SecondActivity. Now my problem is : how do I receive the Intent when SecondActivity gets started and recover the value of the integer parameter ? Which member function of.
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Sep 19, 2010
So I'm getting really confused on how to do this whole thing and I was hoping someone could break it down for me a little bit.I have a service that should always be running, and at certain times it needs to alert the user that a task is to be completed(probably through a notification bar icon). When the user accepts the task, the service needs to look into the local database, construct some non primitive objects, and give them to the activity that it just started.I have looked all over and gotten very confused as to a proper approach so I have a few questions to help me wrap my head around it.If an activity creates a local SQLite database can the service and activities of that application access that same database later?Does the service and activity need to be in the same or separate packages? I would think no but for some reason I remember seeing something about this elsewhere.
How would I do the data transmission from the service to the activity? I was thinking a content provider but it seems like there should be an easier way for the service to just hand off the data. Similar to an Intent but for non primitives.
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Jun 17, 2010
I want to create an app that contains a Service S and an Activity A. The Service S is responsible for preprocessing, such as preparing the data shown on the UI of the Activity A, before the Activity A gets invoked.I want to be able to invoke the Service S from outside the package, say from another Android app's Activity class B, do the preprocessing, and then when the data is ready, invoke Activity A. What is the best way to share data between the Service S and Activity A?How can the external activity B communicate with the Service S to determine if it has completed with all its preprocessing, and the Activity A is ready to be invoked?
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Jul 20, 2010
How do I get data within an Android Service that was passed from an invoking Activity?
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May 18, 2010
is it possible that I send a request from my Android app to a web service and in return I get a data for example a XML file from the web service which I parse in android?
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Nov 24, 2010
I am pretty new to this but I was told I could get good help here. A friend and myself are playing around with creating Android apps (using ADT)
Here is how we are trying to make the program: in activity, user sets threshold values for the X and Y axis on accelerometer. When user hits button "Start", startService is invoked and starts TiltService.
TiltService is designed to run in the background always on the phone without user interaction. TiltService constantly compares the threshold with the accelerometer values and will vibrate if they are off.
My problem is I can't seem to get the putExtra() data correctly. I have overridden the onStartCommand in my service but I get the message "unreachable code" when I save the getExtras() to a bundle.
Here is the relevant code (I can post the whole thing, just do not want to clog up page) code...
I thought I understood the basic of how Intents could pass data, but I guess I don't. Is it obvious what I am missing?
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Jun 30, 2010
I've a service that is receiving UDP data from the network. I want to push this data from the service to a UI activity.
One way to do it is using broadcast Intents. What is the performance overhead of sending broadcasts frequently from the service to the activities?
Are there any other alternatives for doing this?
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Nov 9, 2010
I need to develop an application with downloads the data at the background and update about the progress in the front.
I guess this can be achieved using services and activity and passing data in between the. But, what I need to do is even if I hit back button and then start the activity again. It should check if the service is running or not. If service is not running it should start one else it should display the data from running service.
Something like music player where music is played by a service at a background and activity displays the information. Even on browsing through other activities of the application or hitting back, state of the music player is maintained.
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Feb 15, 2010
Usually, I putExtra inside an Intent to transfer stuff between Activities. But it seems like I can't do this with a Service? Bundle extras = getIntent().getExtras(); That doesn't work for a android Service. How do I send a string from an Activity to a Service then?
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Aug 2, 2010
Whenever the memory needs to be reclaimed, the process is being killed by Activity Manager Service in killPidsForProcess. I have a back button in my activity window on right corner of the title bar.
I want to kill the activity completely on clicking the close button. Can I reuse the same function and will it have any major effect? Please help me out in this.
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Jul 30, 2009
I have a service running, and would like to send a notification. Too bad, the notification object requires a context, like an Activity, and not a service.
Do you know any way to by pass that ? I tried to create an Activity for each notification bu it seems ugly, and I can't find a way to launch an Activity without any view.
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Sep 10, 2010
I need to made an activity (without layout) that on start check if a service is running. if it is true it starts Activity2, if it false it starts Activity1.
I tried with this code:
CODE:............
Enter code here
But when I check, in the onCreate method, if serviceConnect!=null I receive sometime a NullPointerExcption.
I tried also to insert the operation in the method onCreate in an Async Task:
CODE:............
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Aug 18, 2010
I have a Receiver for BOOT_COMPLETED intent and it will start a Service by calling startService with an intent and the Service processes that intent in onStartCommand function by spawning a thread that does a HTTP post to a server.On powerup, sometimes it takes 3 to 5 seconds to get the active data connection on phone, when this happens Service fails to do HTTP post as there is no data connection. Is it possible for the Receiver to send the intent to Service using startService with a delay.? so that when onStartCommand of Service is called data connection is ready to post data.
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Feb 12, 2010
Is is possible to send an object to an Android Service through an Intent without actually binding to the service? Or maybe another way for the Service to access Objects...
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Jul 28, 2010
I wanna develop an app that uses CSD or Data channel of GSM Service to send data. Can anyone help me out with it?
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Sep 13, 2010
I have a server socket bound to a port and I want to send notifications using NotificationManager when a client connects. This all works well.
What I want to avoid is sending notifications if a specific activity is currently being used by the user. E.g., I'm trying to avoid something like GMail notification if I'm already reading email.
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Dec 30, 2009
I am developing an application in which the user require to register first and than got the user page. For that i have made layout and the layout consist many fields, so, i have made part of layout and also made the separate activity for the each layout. The layout like address, phone, etc... After that i have wrote the code for calling an activity and it works fine. It means when i press the "Next" button the another page will come and it will also consist some textview ,edittext and previous and next button. Actually, i want something different like -- When the user fill the first form and he will proceed to next, the content written by the user should not gone when the user press "Next" button. The content should be there which was written by user. And same way i have have 6 pages like that way to complete the registration process. So, have you any idea to solve above problem? I really need your help because right now i stuck at this point. So, please any body help me out of this problem. I would appreciate your help. I am waiting for your reply.
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Mar 11, 2009
Is there a built in activity for sending picture text messages? If so, what does the intent look like that fires it off?
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Jun 22, 2010
I'm trying to get ksoap2 working on android. I have spent at least 10 hours now reading forum posts, and documentations. Just querying some methods like getServerTime where I don't have to send any values, works. My goal is to send data, and receive a response. For example: send city name, get city time.
I'm practicing on this site: http://www.nanonull.com/TimeService/TimeService.asmx
This is my code:
CODE:............
This is the error I get:
CODE:..............
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Apr 21, 2009
Ok, I have 2 Activities I want to send data between activity A and B.My problem is that some random code of mine seems to be called between startActivityForResult() and onActivityResult()in Activity A.This doesn't make any sense because there is no code after startActivityForResult() is called.Shouldn't onActivityResult() be the first thing A does after B finishes?
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Aug 3, 2009
I have a server application listening on port 5001 on an anroid dev phone. The client application running on my laptop tries to send data to the server application.
The client can successfully connect and send data to the server machine when the phone has wifi enabled. The command to do this is - iperf -c <ip address of wifi interface>
But when I enable the 3G connection and try to send data then it fails. iperf -c <ip address of the 3G interface>
I cannot even ping the <ip address of the 3G interface>. Is there any port blocking enforced in case of external 3G network connection. Can anyone please tell me how can I send data to the server application on 3G network. Is there any specific port on which the server application should be listening??
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May 15, 2010
I have a broadcast receiver the looks at SMS, when it receives an SMS that is destined for my application it needs to send some data to an activity or start the activity if it is not running. How do I find out if the activity is running and send data to it if it is? I know I can use StartActivity and stuff the intent with the data I want to send to it but if I start the activity that is already running, another instance of it will be created (wont it?).
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Oct 11, 2010
Will it possible to send data from application to usb device (some pen drive). If yes then how? Please provide some docs or link.
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Mar 31, 2009
I'm writing a Android gps application using locationmanager with locationlistener and I'm only testing with the emulator. This is my problem. - When sending only $GPGGA nmea sentences to emulator by telnet, everything works fine. - When sending only $GPRMC nmea sentences to emulator by telnet, the first location is recognized by locationmanager, the gps provider goes into status 2, next $GPRMC sentence is not recognized.
This happens not only with my application, the Google Maps application and also others show the same behavior: they get only the first $GPRMC location. When sending a $GPGGA sentence after the $GPRMC, the locationlistener gets control and location is shown.
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Jun 15, 2010
Android supports a limited version of apache's http client(v4). typically if I want to send binary data using content type= application/octet-stream via POST,
I do the following:
CODE:.........................
However ByteArrayRequestEntity is not supported on android. what can I do?
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