Android :: How To Wait For Service On Activity Start

Nov 2, 2010

I am making an application that has Activity which communicates with a single service, and is used to start, stop or change settings of that service. I used a singleton approach from this tip.

My problem is that busy-waiting is not working for me and I can't attach a listener to the service because activity gets blocked. I want the service to start or get it's current instance at application start so I put the busy-waiting in onCreate. I'm guessing I'm doing this very wrong, so how do I do this appropriately?

Android :: How to wait for service on activity start


Android :: Activity Check Service To Start Another Activity

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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Android :: Start Activity From The Service

Sep 3, 2010

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 .

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Android :: Start An Activity From A Service

Oct 6, 2010

I 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.

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Android :: Start Service Without Using Any Activity

Oct 16, 2009

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 .

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Android :: How To Start Service From Activity?

Jun 14, 2010

How can I start a service from an Activity ?

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Android :: Start Service From Activity

Feb 25, 2010

In my app i have an activity from which i want to start an Service.

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Android :: Start Activity From Service

Aug 11, 2010

Is it possible to start an Activity from a Service? If yes, how can we achieve this?

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Android :: Start Activity From Service

Aug 31, 2010

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.

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Android :: Start Activity From Service - And Getting Result From It

Feb 11, 2010

I have a Service which needs to receive data from external packages. So, to locate the data providing external packages, I use activity- filter and PackageManager.queryIntentActivities function to locate the interesting packages. Now, from each such package, I need to get a ContentProvider URI. So I want to start the external Activity and the external activity will return a result to my service - something like "startActivityForResult". The problem is that there is no way to call "startActivityForResult" from a Service, only Activity can do that, and my project does not have any Activity, and probably can't show UI for the user.

The bottom line: Can anyone suggest a way to get ContentProvider URI from an external package, while my package has only a Service?

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Android :: How To Start Activity From Service - If Not Already Started

Mar 19, 2010

I've successfully implemented a BootReceiver, AlarmManager, and Service per the code here: http://github.com/commonsguy/cw-advandroid/tree/master/SystemServices...

Inside the doWakefulWork method of the Service I am instantiating a few classes, but some of them require my Activity to be running. How do I actually start the Activity? The code above only starts the AlarmManager and Service.

There are also times where the Activity *is* already started, like if the user manually opened it. So I also need to start the Activity "only if it's not already running". Hows that work?

And what about the situation where the user first installs your application and may not even reboot their phone for a week. In that case, do you have to start the Service from the Activity? But then the Service will die with the Activity.

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Android :: Analog Of Start Activity For Result For Service

Jul 14, 2010

Despite similar question was asked, I have differnet situation: My app consists mostly of a background Service. I want to start external activities and get results back.I see several options:Create dummy Activity and keep reference to it for using its startActivityForResult. This consumes quite a lot of memory, as we know. Use Broadcast Intents instead of Android's results infrastructure: ask client activities to broadcast their results before closing. This kind of breaks the idea and not so performance-efficient. Use Instrumentation directly - try to copy code from startActivityForResult into my Service. Use Service interfaces - serialize and add AIDL connection to the Intent for starting an Activity. In this case Activity should call Service directly instead of providing result. The third approach feels closer to Android for me, but I'm not sure if it's possible to do - Service does not have its Instrumentation, and default implementation seems to always return null.

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Android :: Start Activity From Service - Running In Background

Nov 13, 2009

I want to develop a application that continuously running in background as service. And after that if i press any numeric key, it should start an application.

I have developed a service which is running continuously. Is it possible in Android?

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Android :: Activity Is Unable To Start Service In Same Package / What I Am Missing?

Jun 9, 2009

I have a service class my.app.MyService that I'm attempting to launch from my.app.MyActivity as follows:

Intent svc = new Intent( this, MyService.class );

The manifest contains the entries:

<uses-permission android:name="android.permission.ACCESS_BACKGROUND_SERVICE" />

<service android:name =".MyService" />

LogCat gives the message:

"Unable to start service Intent { comp={"my.app/ my.app.MyService" } } : not found"

Could someone kindly let me know what I am missing?

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Android :: How To Call Activity Wait For Sub-activity To Return & Proceed?

Apr 15, 2010

Experts: My MainActivity launches a SubActivity by calling: startActivityForResult(intent, REQ_CODE); The SubActivity shows a dialog that has two buttons: Yes, No For the dialog, I've the following code: public void onClick(DialogInterface dialog, int whichButton) {/* User clicked OK */setResult(DialogInterface. BUTTON_POSITIVE) ;finish();

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Android :: Android Service Design - Start With Activity Or When Needed?

Nov 24, 2010

I'm an android noob that is looking for some advice on how to properly use a service in Android. I am building an app that will connect to a server on the Internet to get a data stream via TCP. That data then needs to get send out to another device that is connected via a bluetooth serial port. I want this to continue to function in the background while the user looks at a different activity. The app will be a NTRIP client, which pulls real time RTK correction data from the Internet and sends it to a RTK GPS receiver that I connect to via bluetooth. The data rate will be about 500 bytes/second. The user interface is a single button to connect or disconnect the data stream and some text to show status of the GPS receiver. There are also a few settings that will need to be configured by the user such as the IP/port of the server to connect to and the bluetooth device to communicate with.I think I need to have the main activity spawn a local service, and then have the service spawn a thread for the TCP stream and another thread for the bluetooth connection. Does this sound right? What is the best model for the service in this scenario?-Start(bind) the service every time the activity starts, and have the connect/disconnect button send commands to the service to start/stop the threads. If I go this route, the service will continue to run after the user disconnects and goes to another app. The service would need an inactivity timer to terminate itself.-Start and stop the service when the user presses the connect/disconnect button. The service only runs when data is moving. If I do this, the activity will need to see if the service is running when the activity starts, in order to know if it should bind to the service or tell the user that the link is disconnected.

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Android : How To Wait Periods Of 30 Second To Run A Service

Sep 13, 2010

I, i have a service and i want that once it started, it performs is work every 30 seconds. How can i do that?

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Android :: Wait For Activity To Finish?

Sep 7, 2010

I have one activity call a camera view activity, and in the onActivityResult, I have it start that activity again with different parameters. Android doesn't seem to like that, and gives me an error that the camera is not available if I start it right after it returns. I tried just waiting a few seconds, but this doesn't seem to work on all phones, and it sometimes crashes. Is there some way to wait until that activity finishes properly, and gives up all resources?

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Android :: Activity To Register - Wait / Force Close Notification

Jul 2, 2009

Is there any way for an activity to register for being notified if a wait/force close dialog is shown or alternatively if the user selects force close, a way to detect that in ondestroy()?

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Android :: Activity Title - Put Spinning Wait In Upper Right Corner?

Aug 18, 2010

In the Activity title bar, how do I put a spinning wait in the upper right corner?

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Android :: Unable To Start Service Intent Service Not Found

Aug 20, 2009

I am getting following message when i try to launch service.Also is there any specific path on file system where we need to place the .apk file which contains my serivce component only.

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Android :: Kill Or Wait Phone Activity (incoming Call) Between Running Application?

Jun 30, 2010

Is it possible if my application is running and that time if any incoming call arrives then i want to kill or wait that call (phone activity). any one achieve this type of work in android. i have a no idea how to do this.

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Android :: Start An Activity And Return Back To Original Activity

Jan 26, 2009

I have an application with contains multiple activities. The main activity will start the others ( use startActivity() ) depends on user event, when an activity close, it calls finish() and return back to main activity. It appears to behavior like that.

However, the "problem" I see is main activity's onCreate function is called every time. I think the the main activity should be placed in the activity stack and simply push to front when others exit, therefore only onResume, onStart are called. Is there some flag I need to set or I misunderstand the activity behaviro?

In child activity, besides calling finish() or startActivity for main activity, what is other way to move main activity to front?

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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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Android :: How To Force Main Activity To Wait In Android?

May 21, 2010

I am calling a subactivity from main activity. This subactivity should take few numbers from user (i'm using Edit text control to achieve this), save them to static variable in another class and terminate. I want main activity to wait for subactivity but both are just running simultaneously. Even doing sth like that doesn't help:

Thread t = new Thread(new Runnable(){
public void run(){
Log.v("==================", "run "+new Date());
startActivityForResult(new Intent(ctx,myCustomSubactivity.class),1);
} } );
Log.v("==================", "calling run "+new Date());
t.start(); try { t.join();
} catch (InterruptedException e) {Log.v("==================", "can't join");
}
Log.v("==================", "back from activity "+new Date());

Do you know how to force main activity to wait? Thread.wait() method is not supported in Android (program throws error).

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Android :: Start An Activity In Different Apk Using StartActivity - Using The Activity Name Or Similar

Apr 20, 2010

I have tried to write an Android application with an activity that should be launched from a different application. It is not a content provider, just an app with a gui that should not be listed among the installed applications. I have tried the code examples here and it seems to be quite easy to launch existing providers and so on, but I fail to figure out how to just write a "hidden" app and launch it from a different one.

The basic use case is:

App A is a normal apk launchable from the application list.

App B is a different apk with known package and activity names, but is is not visible or launchable from the application list.

App A launches app B using the package and class names (or perhaps a URI constructed from these?).

I fail in the third step. Is it possible to do this?

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Android :: Start Activity And Clear Activity History

Apr 22, 2010

I have a huge maze of activities in my application. What I need to do, is that when the user logs in into the system, the activity history should be cleared. I cant just use finish() when I start a new activity, because I want the activities to have a history until the user logs in. I have experimentet with the different flags when starting an activity, but I have had no success.

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Android :: Start A New Activity From Anther Activity

Nov 19, 2010

I want to start a new activity from ab activity that (extends from Linearlayout) .. but this code is not right

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

public class SearchResultForm extends LinearLayout{ ...

And i get this error ..

No enclosing instance of the type SearchResultForm is accessible in scope.

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Android :: Start An Activity From Non Activity Class

Aug 19, 2009

An activity can be called from existing activity through *startActivity(intent); *

Is t possible to call an activity from non Activity class ? and how?

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Android : Closing Activity Completely / Process Killed By Activity Manager Service

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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