Could some one please tell me how to invoke an activity from a service when the service receives some content from a server. the service keeps getting the data and the activity needs to update itself.
I am unable to find a good tutorial for broadcast intents stuff.
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I've configured local service under some app i wanna know how could i invoke methods on the activity, through the service in a synchronous way for example the service invoke a method inthe activity and waiting for for result(synchronous) from it.
View 2 Replies View RelatedI have one query regarding how to use the services of different APK in my APK. Suppose i have created APK1 having services(serv1, serv2) and APK2. I want to invoke the serv1 in APK2. I have tried by using aidl files also.
These my question: - How we can access services of different .apk. - How to use the aidl file, is the aidl file should be added in the .apk whose service we want to use.
I have gone through the below links, but couldn't find any concret idea of how to impliment. http://code.google.com/android/reference/aidl.html http://minicompact.com/mobiletalk/?tag=android-service http://minicompact.com/mobiletalk/?p=18 http://code.google.com/android/reference/android/os/IBinder.html ..
I'm trying to make an app where a button will invoke a web service's API call (it'll be my own web service; the call/functionality is not relevant). I know how to make a new listener that invokes an activity, but that is insufficient here since I'll still need to make a call out to a web service through it. What is it I'm doing here? Is this a service that I'm looking at? content provider that I'll be invoking that somehow gets data from a web service?
View 2 Replies View RelatedI'm not asking to be spoon fed here, just need some pointers on where to direct my searching
I want to call a SOAP web service, possibly this one
I don't want to use KSoap, is there anyway I can do this using the apache libraries that are included with the Android SDK?
I have a custom view that draws to a canvas. I am trying to invoke changes to the canvas when the user pushes a button from the activity that this view is tied to. Currently, I am attempting to do this by calling a public method, called setNewDrawable, that I created inside the view.
The debugger is giving me different values for the view ID depending on whether I'm inside setNewDrawable or inside the Overridden onDraw method when I post an Invalidate.
For example the debugger variables show: (This - MyView id=830067720176) or (This - MyView id=830067712344) in setNewDrawable and onDraw respectively. This makes me think I basically have two copies of the object and I am essentially interacting with the wrong one.
How can I get information to my custom View in order to determine what it draws?
Here is the code I am running...
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.
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:............
Suppose I have an Activity that's a list. It calls a Service when this Activity starts.The Service will do background stuff download, parse, and fill the list.My question is this: How can the Service communicate with the Activity?How can I call a method in the Activity, from the Service? (I'm new to OOP)
View 2 Replies View RelatedIn Virgil Dobjanschi's talk, "Developing Android REST client applications" (link here), he said a few things that took me by surprise. Including:
Don't run http queries in threads spawned by your activities. Instead, communicate with a service to do them, and store the information in a ContentProvider.
Use a ContentObserver to be notified of changes.
Always perform long running tasks in a Service, never in your Activity.
Stop your Service when you're done with it.
I understand that he was talking about a REST API, but I'm trying to make it fit with some other ideas I've had for apps. One of APIs I've been using uses long-polling for their chat interface. There is a loop http queries, most of which will time out. This means that, as long as the app hasn't been killed by the OS, or the user hasn't specifically turned off the chat feature, I'll never be done with the Service, and it will stay open forever. This seems less than optimal.
Long question short:
For a chat application that uses long polling to simulate push and immediate response, is it still best practice to use a Service to perform the HTTP queries, and store the information in a ContentProvider?
Our application will expose a Service that can be called by Activities in other people's applications.In many cases, the parent applications calling Activity may be paused before our Service completes. I am looking for the best way for a Service to communicate back to the calling Activity that may have been paused.These are the known options:
(1) Require calling Activities to have a registerReceiver() with a custom action and broadcast to that from our Service. The only way to secure this registerReceiver() is with a signature-based permission.As our Service communicates with any number of unknown 3rd party apps,we can't sign our Service's parent app with all these unknown certificates. These apps would therefore be exposing an unsecured registerReceiver() on their Activity. Would ideally like to avoid requiring this.
(2) Create a PendingIntent to send results back to the activity and give it to our Service. Our Service would send data to calling Activity's onActivityResult(). Each time the result is delivered, the calling Activity will go through onPause() and onResume() but this should be OK.
(3) The calling Activities could create a Handler. The Activity would then create a Messenger pointing to that Handler and send it to our service. Our Service can then use the Messenger to deliver our message back to the calling Activity.
I have a launcher activity which gets activated everytime i start the application and a service which complements it. Now as i press the return key from my main activity .Its Ondestroy gets called.Now i have nullify the pointer of the my launcher activity there. now i am listening through the service any event happening on the network after closing the launcher activity thread and if any event occurs i have to relaunch my launcher activity. i have tried intent but doesnot seems to get though it .
View 4 Replies View RelatedI have a service (input method) and from within that service I want to start and activity which was declared in the same manifest. The activity maybe running but in the background.
How do i check its presence and bring it to front, or optionally start this.
From what I can gather from other posts, this is about what I need to do:
CODE:..............
I don't knwo which of thest flags pertain to what I need to do. The docs are quite merky, and my random attempt at making this work failed.
My application has a background process which continuously waits on a socket for receiving messages and it should be started only once and at the time of application starting.Thus i want to do that background job in a service.
The service should not be started from the activity ,it should be started at the application starting.
How can i define the service,which will be started at the time of application starting?
If at all the service is started from activity.The activity can be destroyed and restarted.when this happens the service also be restarted .
How can I start a service from an Activity ?
View 4 Replies View RelatedIn my app i have an activity from which i want to start an Service.
View 3 Replies View RelatedIs it possible to start an Activity from a Service? If yes, how can we achieve this?
View 1 Replies View Relatedi am writing an app in which i need a background service to call an activity and show some result.
View 4 Replies View RelatedI am working on an android application, where the activity binds to a local service to perform certain tasks.Now I am binding the service in the OnCreate method of the Activity, after which the activity has to use the service object to invoke the functionality defined in the servicein the OnStart method. The problem here is that once a call "bindservice" has been made, we might not get the serviceobject immediately, so my service object would be null till that time. So i cannot invoke the service functions.So is there a way to determine in the activity that the service has been bound and the service object is valid and could be used now. For reference i'm attaching a code snippet for the same.
View 2 Replies View RelatedCan an Activity be bound to two different Services at the same time or do I have to unbind one Service before binding to the other one?
View 2 Replies View RelatedI want to stop an Activity that is in some other application from my Applications service. Is there any mechanism to do so?
View 6 Replies View RelatedIs it possible to close/finish activities in activity stack from a backgorund service.
View 2 Replies View RelatedI have a service running in the background. It starts on device boot. Also, I have one activity (that appears in the task launcher) in which I have provided buttons to start and stop the service.
Now, I install the application on the phone and I start the service using this activity (and not on-device boot). As expected the service starts and starts doing its designated task. I no-longer need the activity. So it goes out of sight and may not be required for a long time now.
My question is, now, if the android platform kills this activity, will it kill my service too ? (This is because I see that after few hours, my service is not running anymore.). If this is true, then will the service continue running longer if the service was started on device boot.
Activity 1 starts a Service, using the standard Intent. Activity 1 starts Activity 2. Then, Activity 1 gets finished().
Now, there's only Activity 2.
How does Activity 2 kill the Service, since that Intent was generated in Activity 1? I don't want to pass the Intent everywhere...
Android:
CODE:...........
I launched this service from activity
In activity if condition satisfies start
CODE:......................
From my location service mentioned above could not launch activity, how can i get context of current running activity in service class.
Is there a way to find out if an activity is bound to a service? Something like boolean isBoundToService(ServiceConnection sc)?
Sometimes when I play around with my app I get an exception when it tries to unbind a service which is not bound.
I have the folowing method in a Service in my appplication: Code... Do I have to do an AIDL or is there a simpler way?
View 2 Replies View RelatedIs it possible to get the currently running activity through Service..?
i.e. I have a service started by an Activity A, and now I want to stop the service by another activty say Activity B.
Since Activity B doesnt know about the service, i want to capture the events in OnKeyDown() of the Activity B in my service...
Is this possible.. How can i get the Activity B's object..?
Starting from the example ServiceStartArguments.java of the "API demos", the service "ServiceStartArguments" is creating a new Handler object (ServiceHandler) which does all the work in a separate thread. Once that work is completed, how can I tell other components that my work is finished, and also provide data (that resulted from the work) to them?
I tried something like startActivity(intent_transferred_via_msg) which does not work, I'll get an exception because I call it "outside of the service", which is technically true.
I currently have a Service and an Activity in my application.I currently bind the Service to the activity without using AIDL as the Service and the Activity are in the same application.This allows me to call the methods from the Service within my Activity when I require them, however it doesn't let me call the methods of the Activity from within my Service when I want to.Can anyone comment on what would be the best way to achieve this?I could use Intents but is there an alternative option?I want to have tight communication between the Service and the Activity, I want to be able to call an Activity method from my Service when an event happens.
I now have it working the way I want, however I have come across a problem.My service gets status updates and my Activity is then supposed to react to the update sent on from the Service.The problem is that when I start my activity I get the Dialling Status and then Connected status before the onBind is called and I get the instance of iCallDialogActivity.
I need to be able to use my iCallDialogActivity when I get the Dialling and Connected Status notifications.But this gives me a NullPointer Exception due to it not being created in time when my Activity starts, binding is the first thing I do in my Activities onCreate().Is there a way to make it bind straight away?