Android :: Broadcast Data To Other Application?
May 15, 2009
I create an application where i get the various data from net (say for example i am getting the temperature information of particular city and another data is the information of stock value of a particular company) now i want to broadcast that various data to all application. I create a registration process for diff application for diff data (EX app A is registrar for temp of city). so application is registrar for particular data will get that data.
How can i broadcast the information to all application which are registrar .
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Oct 5, 2009
I am developing an application which is communicating with the server. Tha application can perform log-in and get different parameters from server.
The application consists of a RESTful client (custom class for making requests), Communication Service (the service which runs in the background) and the main activity.
For now I created multiple broadcast messages and multiple broadcast receivers in the main activity so when the application performs login operation a receiver (loginBroadcastReceiver) in the main activity receives a message and when another parameter is received from the server different message is broadcasted and another receiver handles the message.
This way however the application performance is poor but I am not sure whether it is due to multiple broadcast receivers.
Does anyone know what is the best way to exchange data between service and main activity - is it better to create a single broadcast receiver and retrieve all parameters from message or is it better to initialize multiple broadcast receivers for multiple parameters?
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Jul 2, 2010
I'd like to maintain a hash table in a broadcast receiver. If I understand BroadcastReceiver's life cycle currently it could get killed wiping out my member variables. What would be the ideal strategy for retrieving a hash table from a previous run of onReceive in the BroadcastReceiver?
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Mar 25, 2010
I am writing an application to listen the SMS inbox in android with one activity and one BroadcastReceiver. Once the SMS comes the Receiver is showing alert message. But I want to send the message information from Receiver to Activity. I don't know how to achieve this.
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May 27, 2010
I know that the apps receive a ACTION_SHUTDOWN broadcast event when the device is shutting down.
When an application receives the shutdown, is there still an opportunity to send data packets out, or does android block such attempts(or does the platform tear down the network stack before it can go out).
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Jul 29, 2009
I am broadcasting an Intent from an activity. Can we make another application as a receiver. So that it will get invoked when that specific intent is broadcasted.
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Sep 16, 2010
I am adding some basic alarm functionality to my program via the use of AlarmManager and a BroadcastReceiver class (named AReceiver.java). My problem is that the data I add to the bundle attached to the Intent creating the PendingIntent appears to be lost. The only bundle data I can access in the AReceiver class is a android.intent.extra.ALARM_COUNT=1. Here is the basic code in the main activity class creating the Intent, PendingIntent and the AlarmManager: [Code in main activity - Notepadv3]
Intent intent = new Intent(Notepadv3.this, AReceiver.class);
intent.putExtra("teststring","hello, passed string in Extra");
PendingIntent alarmIntent = PendingIntent.getBroadcast(this, pendingPeriodIntentId, intent, 0);
AlarmManager am = (AlarmManager) getSystemService(ALARM_SERVICE);
am.set(AlarmManager.RTC_WAKEUP, timeOfNextPeriod.getTimeInMillis(), alarmIntent);..................
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Nov 1, 2010
In a book I read, the author suggests to extend the application class in order to have a place to be used as a singleton. In this way, it is easy to make some initialization stuff in it onCreate().Now my question: if my application has also some broadcast receivers declared in the manifest, and the application was not started explicitly, or it was but then the os reclaimed it resources back, what will be happening if the broadcast receiver is triggered? Will the onCreate of the application class be called first?
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Mar 25, 2010
Currently my application is configured to always receive the CONNECTIVITY_CHANGED action to force an update if the previous update failed because there was no connectivity. What I don't like about this is that the broadcast receiver gets to be called too many times although it is not needed. I was thinking to register my broadcast receiver only if an update failed using the Context.registerReceiver(BroadcastReceiver receiver, IntentFilter filter) method. But I'm not so sure if this is a good idea. I'm concerned that if my application is evicted from memory the broadcast receiver will be unregistered or lost and my application will not be notified about the future CONNECTIVITY_CHANGED actions. The update is done in a short lived service. So if the update fails, the service will register the broadcast receiver just before it ends its execution time. Can somebody explain what happens to my broadcast receiver after the application is evicted from memory?
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Oct 25, 2010
I'm working on a project where I need to run the BroadcastReceiver for a third party library for a specific Intent. I also want to run some of my own code when the Intent is broadcast. If I supply my own BroadcastReceiver for the same Intent, it seems that only, one or the other runs, but not both, depending on which appears first in the AndroidManifest.xml file. Is it possible to register multiple BroadcastReceivers for the same Intent in the same application and have them all run? AndroidManifest.xml snippet
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Aug 13, 2010
I want to run some code when an app is launched, so my broadcast receiver has to be notified when user open any app.
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Mar 4, 2010
I'm making an Android Java app game (although this question applies to all languages really) and hope to release the first version soon. I'm nervous about how I save data in my game. My problem is that, if in a later update, I decide to store more data or store the same data in a different way, I need to be careful I don't lose or corrupt data for users that upgrade (i.e. I want users to be able to use data created by an old version in the new version, like their high scores from before).For example, say I want to save high scores in version 1.
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Aug 13, 2010
I'm trying to figure out if a system event broadcast is broadcasted using ordered broadcast or normal.The event is EVENT_REMINDER and in the source for the calendarprovider i noticed it sets up a alarmmanager to sent the broadcast. I can't find how the alarmmanager sends it. My guess would be as a normal broadcast , But while i was trying some things i noticed i could delay the system's notification (tried up to 10 sec) by building a sleep in my broadcastreceiver. This would indicate that they are handled ordered , and the systems receiver is only called when mine has finished. But can i be sure of this behavour?? (in all 1.5> sdk versions) the docs state that in some cases normal broadcasts are also handled ordered..due to spare of resources.
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Mar 18, 2010
How can I write a Broadcast Receiver that will be invoked when user clicks on any application icon?
I tried by writing:
CODE:...................
But it is not called.
I tried, by using Packagemanager I will get ApplicationInfo. From that I can know all the application starting activity name and package names. I thought I can use them to registerReceiver and my receiver will listen by its launching activity and package name.
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Jan 15, 2012
I could open the file input/output of my application through a broadcast receiver. Normally, I would use openFileOutput/Input(), but this can only be done through activities. Would it be more sensible to create my file in res/raw? or create an instance of the activity and call openFileOutput() on it?
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Sep 28, 2009
trying to create a broadcast receiver which responds to system events and change system settings. I don't need any interaction from the user so I don't need an activity and have been trying to do everything through the manifest file. I've put a log event into my onReceive method but it never logs anything so I'm presuming my method is never called. I've tried this with both the 1.5 and 1.6 SDKs. I was hoping somebody could have a look at my code please and let me know if there are any problems.
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Jun 23, 2010
to start with I've gone through the entire notepad tutorial, I'm a professional game programmer who has some extra time. (though most of my time has been in C++, I did take a year or two of Java classes in college, and remember some of it). I'm not sure the site is a good site to ask questions like this.. If someone has a Forum that might be a good place to ask these newbie questions, please feel free to point me in the direction. I've examined a few of the samples, and think I've a grasp of what I want to do. I've a three to four project plan for some Android releases to sharpen my skills, but since this is my first project and I have never really developed for a mobile phone or the android before, I'd like to make sure I have a solid plan.The first project is an example of the license plate game, however I want to do a few things to change it. Heck maybe when I'm done it'll become a bingo style game, with bluetooth connectivity, you never know. The base idea is I want to offer a list of states, with checkboxes next to them. so to do this, I'll be starting with a Linear List layout similar to the note pad example, and then have a row that is only a Checkbox. I can use text and call strike through if it's been checked off. Perhaps offer an option to not show them if they are checked.
But I want the list to be generated from a set of lists. Maybe all of America's states, maybe reasonable American states (no Hawaii, no Alaska) maybe a North American list, (add in Mexico and some Canadian provinces), a European list, who knows. I'd probably have to have a pop up window that lists all of the lists I suppose using a radiogroup of some sort. So then as far as the data, after weighing options I think best solution is to make a database with two fields, "checked" and "name".I figure I can use the menu for most of the user interaction (aside from clicking on stuff we want to check off) with maybe a few context menu items, I understand how to make all of those already so I should be good. The question I have is what is the best way to populate the lists? Should I create raw data, and have different files for all the lists? Or is there some other way to do this? I've seen this done on the searchable dictionary, but I'd like to hear what people who have actually generated the data like this before. In addition is there an easy way to look at the sql database these applications create, or do you have to run searches on them and output the data? Finally any other suggestion or advice? I definitely want to try to get something like this on the market so I can see the full life cycle and see if anyone actually likes it. (luckily there's not a plethora of them already) but I also want a few people to look over my code if they're willing when I'm done to make sure I've done this right or at least not missing any basic mistakes.
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Feb 6, 2010
I want to add a flag that will tell how much time my application is running. This flag will have to stay even after the application is removed. And, if its installed back, i must have a way to recover this flag. What's a way to implement this?
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Jul 18, 2010
I am using a lot of Internet Possibly 15mb a day, is there an application to tell me what app is using up what usage?
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Oct 20, 2010
I'm trying to understand the way android handles my application cache data....Some times i'll go in there and the cache directory is 6-7mb. What type of data is stored there? Is there a way in the mainifest I can say don't use cache or clear cache at Xmb ?
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Aug 10, 2010
I see this has been mentioned before, but with no answers, so ive decided to make my own thread. I will be swapping my phone very shortly as it is damaged but I would like to save certain data from applications, such as game saved data and text messages from chompSMS.
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Feb 4, 2009
I'm developing an application which downloads a file from FTP server. The code first checks if file is present on local system . If it is not present on local system then it downloads it from FTP server. Application must download file from FTP server when it executes first time after getting installed.
If we reinstall the application , android preserves the data of old application .So now application finds the file on local system and does not download it from FTP server. But it should always download the file on first execution after fresh install. Is there any way to completely wipe out the previous application data on fresh install? Is there any registry or some location where an application can store data and it gets automatically wiped out when application is uninstalled?
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Jun 8, 2010
talk about limited information! I'm trying to get my Android application to connect to an online database to access information. There's quite a bit of info including geotags and these are going to be mapped on my app. The developer site has the very informative piece of information:You can use the network (when it's available) to store and retrieve data on your own web-based services.
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Jun 28, 2009
In order to share data between one of my own Android service and an application i am looking for the best way to do this. I have seen the shared memory drivers inside the GNU Linux kernel, but no Java api. Maybe the specific Google IPC Blinder cad be used for my need ?
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Apr 30, 2010
I have an AppWidget which provides a summary of some data stored and controlled by my main Application. (In a similar way to a Calendar AppWidget showing the next event from the main Calendar application). I want to know the best practice for retrieving the data to update my widget. I have followed the example, and I have extended AppWidgetProvider and have a working widget, onto which I can update. I would expect to read the data from my main application and then update it via my AppWidgetProvider's onUpdate() routine.
Now, is the best practice here for my separate main application to provide the data via a ContentProvider? I assume so, as my Appwidget is not part of the same application. Is it possible to access a ContentProvider inside my onUpdate() routine? Before writing my main application content provider I started to test out retrieving some available data like Contacts information, and showing say a contact name in my widget, to show I can extract data from an existing ContentProvider. When accessing the Contacts contentprovider, the examples talk about:
1) Activity.managedQuery(), but my AppWidget is not an activity. 2) ContentResolver.query(), but I can't work out how to get a valid ContentResolver so I can access the Contacts. getContentResolver() does not appear to be defined for AppWidgetProviders. Am I approaching this the correct way?
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Sep 17, 2010
There is no solution for this?
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Apr 29, 2010
I want to know if I can use the data (for example a tour from point A to point B) and extract it for example to save the tour infos to an text file or post it somewhere or do whatever I want with it? I want to use maps as a database, so what are the restrictions, what am I allowed to do?
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Mar 14, 2010
I think i'm getting senile because I was convinced that to give a name to your application, you had to fill this part of the manifest: <application android:icon="@drawable/icon" android:label="MyApplicationName"> However for a reason I don't understand, my application gets the name of my first activity, in which I load data, henceforce, It is called "Loading"...(defined as follows in the manifest) <activity android:name="AccueilSplash" android:label="Loading">
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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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