Is it possible to start an Activity in the background? I need such an Activity that can operate in the background and spawn other Activities as needed in response to user commands issued to my Home Screen widget.
View 1 Replies
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)?
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?
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?
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?
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:............
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.
View 1 Replies View RelatedI 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.
An activity can be called from existing activity through *startActivity(intent); *
Is t possible to call an activity from non Activity class ? and how?
I'm trying to do a program and I wanna know how do I put the program in background.But it's no put the program in background, the program will start in background and close when the user open again and press close. Somebody knows where I can find?I looked in the references and I didn't find.
View 4 Replies View RelatedI have an app which runs as a background service only. I'l like it to start up when its installed. As its just a background service it doesnt show up on the pane of installed apps. So there is no way for the user to manually start it. I've already regietered for the BOOT_COMPLETED intent which works but I dont want the user to have to power off the phone after the app has been installed, just so as they can start it.
I've looked at the following intents: ACTION_PACKAGE_ADDED/CHANGED/ REPLACED/RESTARTED/INSTALL, ACTION_SCREEN_ON/OFF, ACTION_USER_PRESENT, ACTION_TIME_TICK,
But it doesnt seem that you can register to listen for them from my manifest.
How I can start my background service without a power off/on?
I have a scenario where I start a Service from a splash screen. If I intentionally cause problems in that Service (such as an invalid port for the Socket connection) my UI Thread locks up. I have put a Timer in the Service, and have it perform logging at every tick. The Timer works from within the Service without flaw. So from that, I think I have determined that only the UI Thread is suffering.
If I start a Service from an Activity and that Service has an issue (i.e. server connection problems), should that result in a lockup in the UI thread from which it was launched?
Is there a technique for starting a Service and having it truly run in the background?
Is it possible to start an Intent but keep it hidden? For example now to start the intent I am using startActivitity(intent). Suppose the intent is to start a web browser, the webbrowser is shown to user. Is it possible to keep this hidden?
View 3 Replies View RelatedI'm using Wikitude API 1.1 as an AR viewer in my application. The problem with Wikitude, if I haven't launched the actual Wikitude application since the phone's bootup, I will get a NullPointerException everytime I start my own application.
So I figure if I can start my app first and them check if Wikitude is installed and or running. If it's not installed, go to market n download. If it's not running, then we should run it straight to background so that my app doesn't loose its focuscode...
The part I block commented is the intent to start Wikitude. But I always failed in restricting Wikitude to background. Any help?
I am trying in one of my application when i am going to start i mean power on my google android g1 my application automatically will start but i am unable to understand how can.
View 1 Replies View RelatedI am developing an aplication. This one is designed to login a user, then select how find a place, using simple data or using a map. When I try to set in the event OnClick for select the "Map way" (using intent):
startActivity(new Intent(getApplicationContext(), MapviewController.class));
I have problems and didn't work.
My class and manifest are:
CODE:...........
Do you know any way to call the MapActivity from other?
Scenario: I turn my phone on and multiple applications are running in the background. I run Advanced Task Killer and close all applications in the background. I respond to a text message and all of a sudden FRING and QIK are running again? Why? Can settings be adjusted manually or do I need to Force Stop in Settings - Applications every time I turn on the phone?
View 1 Replies View RelatedI got my Xperia P more than a month ago and never had this problem. Now even if i kill all processes using the official or a third-party app, a few minutes later a number of apps are running again in the background and killing my battery.
View 2 Replies View RelatedI am working on a travelling application and i am using tabs and each tab has an activity i.e world clock in one tab ,weather data in another tab and so on with in the weather tab i am displaying the users selected cities and the scenario is that when the user selects a city that city's forecast is to be displayed and later to view details as well which is in another activity . how can i launch this new activity from the already started activity with in the same tab ?
View 4 Replies View RelatedI'm trying to start an Activity with startActivityForResult, but I keep getting an ActivityNotFound exception, and I can't work out why. I've looked through the code multiple times, and it seems to be identical to some other, working code. Any suggestions?
The newNoteButton that starts the Activity:
CODE:...........
And the beginning of the TypyEdit Activity:
CODE:................
I have created two classes: Example1 and Example2, which extends activity.
Example1 contains a UI of buttons, while Example2 contains UI of TextEdit.
I want to call Example2 when a button is clicked, so this code is in an onclick method
Intent i = new Intent();
i.setClassName("com.a.ui", "com.a.ui.Example2");
startActivity(i);
So I am able to get the UI of Example2 successfully.
What's an alternate way of calling intent?
Is there any alternate way to start an activity?
I'm trying to do some dynamic code and I load a new class that's supposed to be an Activity and I want to start it, but using the regular startActivity(Intent) wants the Activity to be "Declared" in the AndroidManifest.xml file.
View 1 Replies View RelatedI am trying to make a PopupWindow show straight away when an activity has started.
when calling public void showAtLocation (View parent, int gravity, int x, int y)
I get the exception ERROR/AndroidRuntime(2500): Caused by: android.view.WindowManager $BadTokenException: Unable to add window -- token null is not valid; is your activity running?
At the moment I am calling from onCreate, but when calling from onStart or onResume it still gives the same error.
The activity api says the activity is supposed to be running after onResume is called. Where is the best place to load up the PopupWindow if it needs to be done straight away?
At the moment It looks like Activity.onWindowFocusChanged() is the best place.
I create my Network provider and I want to start Activity from it. Is it necessary to create separate Activity with Manifest and then launch it using startActivity? Can I launch unregistered Activity directly from my provider?
View 5 Replies View RelatedI 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 want to know if there is any way to start another application from within my application. Specifically i am trying to a have a shortcut (button) to Google Maps Application within my application. Also is there any way to start another process from within my android appplication?
View 4 Replies View RelatedI want to start the activity owned by other application. I know we could construct the Intent(setAction,setClass), and then call context.startActivity(intent) to start a new activity owned by the same application. When we start the activity not owned by the same application,doest this also work?
For example, I have a activity (com.test.StartTest) and there is a button that used to start some activity Settings owned by the Phone:
CODE:..............
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.
How can i start my own activity when a new notification arrives to our status bar if click that notification my activity should play...
View 4 Replies View RelatedMy 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 .