Android :: Call Main Activity From BroadcastReceiver?

Oct 28, 2010

While developing an alarm based application, i have stuck in a scenario.

When my alarm is fired, i can receive the event in BroadCastReceiver::onReceive().
Within this function, i want to notify/call a function, which is located on MainActivity.

How to achieve the same?

Android :: Call main activity from BroadcastReceiver?


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Dec 12, 2009

I have a normal Java application, normally, we start an Android application from a Main Activity, now I must start it from my application.

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Aug 8, 2010

I am using the following method in a new application I'm developing. There is a main activity, which instantiates different classes that extends RelativeLayout and I'm using setContentView to switch between the different modules of the application. I wonder if this is a good approach or necessarily I have to use different activities to the several screens the app haves.

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Android :: App Contains BroadcastReceiver And Activity

Aug 6, 2009

I want to start a project which contains a BroadcastReceiver and an Activity. The BroadcastReceiver doesn't communicate with the activity. But they share a same resource. Can i do it in only one Project (that means, i use only 1 apk to install both BroadcastReceiver and the Activity on my phone), or i have to develope them seperately in 2 projects.

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Android :: BroadcastReceiver Communicating With Activity

Feb 26, 2009

Is it possible to update a currently running activity from a BroadcastReceiver? I want to update my activity from a BroadcastReceiver that runs alongside it. When I run my app (from Eclipse), my activity starts. When the BroadcastReceiver is triggered, it currently tries to start the activity (with extras in the bundle...this is the important part), but nothing happens, presumably because the activity is already running. So my question is, how do I get the new information to my Activity (or even just tell the activity that there's new information to get if I stick the information in a database)? This seems like it should be fairly straightforward, but I'm clearly missing something.

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Android : How Can I Call Service Methods From BroadcastReceiver?

Dec 7, 2009

I made two applications. One for an activity receiving user input, the other for a background service. In the service package, I create two files (startSensorBroadReceiver.java, remoteService.java). StartSensorBroadReceiver will receiver an intent from activity application and call method inside of the service. There is no erron in the codes but I can not excute what is want. I meet a message like this "The application ServiceExample has stopped unexpectedly. Please try again." could you let me know. what is wrong? and how I can call service methods from broadcastReceiver?

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Android :: BroadcastReceiver To Listen For Activity Being Launched

Jun 22, 2010

I am wondering whether is possible to use a BroadcastReceiver to listen for an Activity being launched. I have no control of the Activity I need to know about as it is from the Android platform.

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Android :: Dataflow Between BroadcastReceiver ContentProvider And Activity?

Mar 19, 2009

I've developed an application that receives a Broadcast and then launches an Activity, where that Activity queries a ContentProvider which pulls information out of the DNS in real-time.

I'd like to be able to shuffle this so that instead of going:

CODE:.......

It goes:

CODE:.......

i.e. if the query() returns no data I want to miss out launching the activity, and allow the Broadcast message to fall through as normal.

If the query() does return data, I want that Cursor to be supplied to the Activity, so that I don't have to go and query for the data again.

In turn, the Activity has its own UI which the user needs to respond to.

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Android :: How To Unicast An Intent To An Activity With Inner BroadCastReceiver

Aug 18, 2010

I have 2 Activities that need to communicate with each other: ActivityA and ActivityB

Say that ActivityA opens ActivityB. How do I unicast a message from ActivityB to ActivityA without closing ActivityB?

Here's what I tried: setResult() - but the intent will be delivered only when ActivityB closes sendBroadcast() - but this sends the intent to everyone listening to the action.

I only want the action to reach ActivityA since it spawned ActivityB.

I tried having ActivityA registering a BroadCast receiver, but I cannot target that via Intent's SetComponentName(). startActivity() - this brings up ActivityA, which I don't want.

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Android :: Best Practice On Updating UI From BroadcastReceiver To A Certain Activity?

Jul 18, 2010

When i have a broadcastReceiver say android.intent.action.MEDIA_BUTTON and i want to update the current activity's UI without creating a new activity, is there any good practice on this one?

What i know (might not be correct)

1) I can put the BroadcastReceiver in the same class as the activity and call the updateUI function after certain activity

2) Create a ContentObserver?

3) Communicate to a service created by the activity, use aidl. (I dont know how to get the current service if its registered from an activity)

4) Create a custom filter on the broadcastReceiver located on the same class as the activity, and use context.sendBroadcast(msg of custom filter) and in the custom filter call updateUI (same as one but more generic?)

The final flow is it would come from a BroadcastReceiver and ends up updating the UI without renewing the activity (unless the activity is dead?)

Kindly provide links/source code on your how you tackle this kind of problem.

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Android :: Update Activity From BroadcastReceiver / Practice For It?

Mar 3, 2010

Does anyone know how I might go about accessing an Activity in an application from a BroadcastReceiver (in the same application)?

(I have some state information in the Activity I'd like to update)

I'm not sure if there is a best practice for it.

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Android : Inform Activity From A BroadcastReceiver ONLY If It Is In The Foreground

Feb 17, 2010

Maybe it's easy, but I couldn't really figure this out right so far... I got a BroadcastReceiver waiting to get triggered by the AlarmMangager - this works fine.

Now: because the event, if it occurs, needs to refresh some elements on screen of the main Activity, I would like to send an Intent from that background BroadcastReceiver to my Activity - but only if it is currently in the foreground, aka active.

If it is not running or not visible, I don't care - and the last thing I want to do is start the Activity by my intent! I handle repainting of the views in my onResume method, so I don't care at all.

EDIT: my BroadcastReceiver is waiting for alarms that must be notified to the user. So, it must be there and declared in the manifest. The problem is: it will have to decide whether the mentioned Activity is currently up in front or not.

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Android : Way To Access To Activity From BroadCastReceiver.onReceive?

Sep 7, 2010

I'm developing alarm application. I'm using listview on activity to reserve alarm. after application finish BroadcastReceiver.onReceive() method, I want to remove check of list. But i dont know how to access to activity.

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Android :: Open Dialogue Activity Without Opening Main Activity Behind It

Jul 19, 2010

Im writing a program that offers a quick reply dialog upon receipt of an SMS.

However, I am getting an unexpected result. When I receieve an SMS, the appropriate dialog activity comes up displaying the correct phone number and message, however there is a second activity behind it that is the 'default' activity in my program (it is what opens when i launch my application)

I do not want this second activity to come up. The quick reply activity should come up by itself over top of whatever the user was doing before.

The 'floating' activity:

CODE:.........

The call to the activity inside an onReceive()

CODE:..............

The Manifest:

CODE:.................

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May 16, 2010

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Android :: Start Activity When Main Activity Is Running In Background

Jan 10, 2010

I created an application which enables the user to set whether he wants to receive notification while the application runs in background mode. If the notifications are enabled an activity should be started (the dialog should appear on the screen).

I tried to enabled it the following way:

CODE:...........

This is the method from main activity. When onPause() is executed isRunningInBackground is set true.
When I tried to debug it when the main application was running in the background the line

startActivity(intent) had no effect (the activity didn't appear).

Does anyone know how to midify the logic in order to start an activity from the main activity when the main activity is running in the background (after onPause() is called)?

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Dec 4, 2009

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Jan 10, 2010

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Apr 11, 2010

I've got an Android application which needs to be woken up sporadically throughout the day.To do this, I'm using the AlarmManager to set up a PendingIntent and have this trigger a BroadcastReceiver. This BroadcastReceiver then starts an Activity to bring the UI to the foreground.All of the above seems to work, in that the Activity launches itself correctly; but I'd like the BroadcastReceiver to notify the Activity that it was started by the alarm (as opposed to being started by the user). To do this I'm trying, from the onReceive() method of the BroadcastReceiver to set a variable in the extras bundle of the intent,Can anyone tell me what's different about passing a bundle from a BroadcastReceiver to an Activity, as opposed to passing the bundle from an Activity to a BroadcastReceiver?

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Android : Start Activity From Within OnReceive Method Of BroadcastReceiver?

Feb 3, 2009

I am trying to get a UI to present itself when an incoming SMS happens. When that happens, I would like to present a UI to the user.

I have a BroadcastReceiver class that listens to the SMS_RECEIVED event. I also have an Activity class that is capable of displaying the needed UI when the event happens.

The questions is: How do I start the activity from within the onReceive method of BroadcastReceiver?

I know others have done this but I can't seem to find any resources that illustrates how.

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Nov 7, 2010

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Nov 30, 2009

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Oct 5, 2010

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Apr 6, 2010

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Aug 24, 2010

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Nov 11, 2010

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Mar 30, 2010

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