Android :: Two Applications Communicate Using DBus
Nov 20, 2010
My intention is to let two applications communicate using DBus . i know that DBus is already integrated into android,Dbus binaries DBus send,DBus-monitor,DBus-daemon are already available. i am trying to create an application which will connect to the Dbus and start sending signals and messages over DBus . for this i have used basic DBus API's to establish connection to the bus.
I have written native code to connect to the DBus.here is the code
CODE:.................................
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Apr 30, 2010
I have an application A and a application B that both have an activity. Now i want to send Data from activity A1 to activity B1 and back. Whats the easiest way to to dis? I tried to use Remote Service via AIDL, but this doesn't work very well in both directions because I only can pass the primitives data types and not every object i like (ok i would have to implement parceable but this is not really practicle). Then i read this post by Dianne Hackborn.
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Sep 13, 2010
What is the difference between 2 ways of interaction between applications on android:
1. implementing service in app #1 and using it in app #2.
2. handling intentions and posting answer intention.
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Oct 19, 2009
Has anyone succeeded in running the Java bindings for dbus on Android? All indications point at dbus already running as a process within the Android OS, but there is no official access point for them through the Java interface.
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Feb 27, 2009
I am using a TabHost one tab with a list and another to show the details of a specific item selected in the list. Does anyone know how I can communicate between tabs?
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Mar 25, 2009
I am trying to send AT commands via Ril from LocationManager as there is only one AT port I can use. But it seems like that there is no ways to call the function refer to Ril. Can I just new a commandsinterface and to call ril's functions via it?
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Apr 22, 2009
I have read 'http://developer.android.com/guide/tutorials/notepad/notepad-ex2.html', specifically step 4 ahow can I return a different result to the 'calling activity', in this example, it always return ACTIVITY_CREATE. What if the 'activity being launcher' has a 'okay' and a 'cancel' button. How can the 'calling activity' knows which button user presses in the 'activity being launcher'.
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Nov 24, 2010
my machine is running window 7.i want to communicate bw two android emulators running on same machine.Emulator 1 is listening on some ip 10.0.2.15 when emulator two tries to create Socket socket = new Socket ("10.0.2.15",8080);it gives exception, unable to connect to 10.0.2.15.does any know how to solve this problem??
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Apr 9, 2012
I want to control my pc with an app on my android device over usb. Is this possible.
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Feb 17, 2010
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)
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Sep 6, 2009
How does BaseAdapter communicate with its ListView? I was wondering how the BaseAdapter.notifyDataSetChanged() method notifies the attached View that the underlying data has been changed and it should refresh itself? When creating a BaseAdapter you attach it to the View with.So the ListView then knows it's adapter to get list elements. But you never tell the BaseAdapter what ListView it is attached to. So when you call BaseAdapter.notifyDataSetChanged() how does it reach the View to tell it to refresh itself?
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May 12, 2010
I'm loading up a webview with some locally generated html and javascript.It makes calls to app methods just fine.But what's the right way to get data from Javascript back to the application? It's simple to have javascript call app methods, but any parameters specified in the call on the javascript side don't survive the trip (I just get null in the app).Gross hacks seem obvious (open a url and encode the data in the url), but that can't be right.You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscribe@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
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Jul 2, 2010
I am working on a app that will eventually need to communicate with an external device over the phone USB port. Are there any USB drivers and hooks in the Android OS for such applications.
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Jan 30, 2010
In my current project I have a full screen TabActivity. Each tab content is handled by two instances of same ListActivity. Now, I put an extra int in intent to know which data should be displayed.So in onCreate method of my ListActivity, I check the int in extra and I build my query to obtain a SQLLiteCursor.I would like to dynamycally give to this two instances of ListActivity the list of item that should be displayed.I do not know what is the best way to do this. Any idea ?
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Aug 25, 2009
i have some problem to communicate with a service from an Android application.The service is in a first package "package com.myService" and the application in another on "package com.myApplication".My service work and start well but my next step is to add an AIDL interface to external applications.I have tried to follow the recomandation described here : http://developer.android.com/guide/developing/tools/aidl.html, but i have still the following error (given in the log service):W/ActivityManager( 568): Unable to start service Intent { action=com.MyApplication.IBootstrapService }: not found
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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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Sep 30, 2009
i have an app widget that has a couple of buttons on it, and in my onUpdate() call, I am hooking up the buttons to do something when you press them
RemoteViews remoteViews = new RemoteViews(context.getPackageName (), R.layout.appwidget); remoteViews.setOnClickPendingIntent(R.id.Button1, button1PendingIntent); remoteViews.setOnClickPendingIntent(R.id.Button2, button2PendingIntent);
The problem is that when I click on button2, it sends the button1 pending intent. i think that's because it's reusing the pending intent. http://groups.google.com/group/android-developers/browse_thread/threa. "If the creating application later re-retrieves the same kind of PendingIntent (same operation, same Intent action, data, categories, and components, and same flags), it will receive a PendingIntent representing the same token if that is still valid, and can thus call cancel() to remove it." So then the question is, how do I communicate which button was pressed?
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Jun 25, 2010
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?
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May 16, 2010
An application I'm building uses a local Service for downloading files from the web to the phone's SD card. In this app users can browse lists of books, and read them while online. A user can also download a pdf copy of a book for offline viewing. To handle downloads I'm using a locally bound Service. I do not want this Service to run all the time, only when downloading files. So that the Service can shut itself down when its tasks are complete, I am not binding to the service, rather I'm sending an "enqueue for download" command through the Intent passed to Context.startService.
Books available for download are shown in a list. A user can choose to download a book by clicking on its row in the list. On download, I need to show download progress using a ProgressBar on the actual book list row. I need to also show, on the rows, if a book is enqueued for download, or if its download has completed or failed. The books can be shown in different activities throughout the application--in search, or in the user's list of favorite books, for example. When the books are shown in different places, these are not the same objects, but they are uniquely identified by their bookId...............
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Aug 2, 2010
In the Activity I write Intent i=new Intent("IntentServiceTest"); Bundle bundle = new Bundle(); bundle.putString("abc", "def"); i.putExtra("wer", bundle); IntentTest.this.startService(i); Start Service into Service OnCreate method,but I don't know how to do get this Intent in this method.
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Feb 16, 2010
I have a service that listens to a socket. When receiving certain input it is to create an activity. When receiving other input, it is to kill this activity. I have struggled for a while to make the service communicate with the activity through AIDL (http://developer.android.com/guide/developing/tools/aidl.html), but this seems to not be effective. I think AIDL is only effective when the process that is to be talked to is a service, not when it is an activity? I would love some directions or suggestions on how to solve my problem.
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Apr 29, 2010
I have written a command line interface program in the C language. This kind of programs (as you know) waits for user commands typed in the terminal and reacts on depend of them. In fact, the program implements a callback function which parses the command and invokes the appropriate function in order to respond to the user.Now, I have to make a Java GUI (Graphical user interface) for the desktop (Ubuntu) version of this program and then port the same program to the Android Platform (of course the GUI will respect Android framework), so I'm looking for the best way to do it.I have heard about JNI and JNA and I don't known which one will be the best for me. By the way what are the main differences between JNI and JNA.
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May 25, 2009
I'm starting my first Android Application and I'm trying to figure out the best way to implement an RPC layer to communicate with my Tomcat server. Basically, I've got POJOs on the Android Client and on the Server. I simply would like to seserialize the POJOs on Android, send up an HTTP Post, deserialize on the server, do some work, then serialize a POJO response back down to the client. I've seen a number of posts referencing JSON and XML but nothing really definitive.
Further clouding the matter is the different Android SDKs out there that seem to have different levels of support for each. Obviously, if Android has a native library that works well, I'd like to use that. Additionally, I'd like something that could work with my existing POJOs without a great deal of trouble. What are the best practices for this sort of thing? Can anyone send me to any tutorials that have some solid examples on how to get this implemented and going?
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May 10, 2010
I am trying to develop an app and I want it to bring in data from a mySQL database. But from some reading I have done on different sites, I am realizing that it is probably not going to happen. But I am curious to know, how do apps like PhoneFlix and others view that dynamic data on the application? Does it somehow just bring it in through http? If so, how would I go about doing that? Does anyone know of any good sites that will point me in the right direction?
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Aug 20, 2010
In my app I want to obtain a gps lock and record the coords. But I do not want to lock the device into looking for the gps. The user is to be free to traverse through the app and the different activities within.
So If I call a locationListener in activity A, can I reference it in activities B C and D?
if is was still in activity A I could say something like
A.this.mlocListener.removeMyUpdates();
When I am in activity B how can I reference the LocationListener I set up in Activity A
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Aug 17, 2010
I have a widget which starts a service. The service registers two broadcast receivers. I would like to send back intents from the receivers to the service, so that the service can react.I remember reading (on some blog) that this won't start a new service, but will simply pass the intent to the already running service. Is this correct? Is it a bad way of doing it? Is there a better way?
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Aug 12, 2009
In Android, how do I get the application's id programatically (or by some other method), and how can I communicate with other applications using that id?
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Jul 17, 2010
I noticed on their Facebook page that in February of this year, they had a service outage. Does that mean that you have to rely on their backend for the software to make a connection - on other words: the android app doesn't communicate directly with the PC software?
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Apr 28, 2010
I believe that it's possible to call Java methods from (PhoneGap) Javascript. Anyone knows how to do that?? (I know how to do it by changing the source code of PhoneGap, but I'd avoid that)
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Oct 12, 2010
I'm pretty naive about wi-fi, as I haven't used it much, and I don't have wifi at home, so please forgive if this is a noob question.I got my brand spanking new Evo yesterday (woohoo!). Everything so far seems to work fine, except that I can't get wifi to communicate, although it looks like it's connected. My workplace has an open wifi hotspot (I work in a public library). It looks like the wifi is connected, but when I try any apps, no data seems to go through. They either report no connection, or simply nothing happens.When I look at wifi settings, it shows "connected", an IP address, speed, good connection, etc., but still nothing happens. At lunch, I found three open hotspots within a couple of blocks of here, with the same result, wifi settings shows a good connection, but no data. I tried a bunch of web searches, but nothing I've found seems to address this issue.
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