Android :: Process Started / No Errors / Activity Not Visible On Android

Jul 5, 2010

I have developed an App that launches and works fine on Android 1.5 and 1.6. When I try and use it on version higher then that the app's activity starts, progress dialogs pop up and I can see my Async Task executing and the info being returned via Logcat. No errors or exceptions are shown. But the Activity never displays. All I see is the progress dialog showing over the home screen and then nothing. The process is active and running under the DDMS view.

Android :: Process started / no errors / activity not visible on Android


Android :: Which Activity Will On The Front If The Process Was Re-started

Jul 21, 2010

Suppose my application P started Activity A, and A started Activity B, then the activity stack contained A and B, with B at the top.

After that, I opened other apps by pressing Home button. Suppose after a while, the process of application P is killed by the OS. Then, I press Home button to select application P. At this time, which activity will be brought to the front, Activity A or Activity B?

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Android :: Activity Of Killed Process Still Visible In List After Home Pressed

Sep 23, 2010

like many others, I want to kill my Android application on "exit" button. Really kill, not just move to background and stop all active code. (I know very well that Android does not like it.) I found Process.killProcess(Process.myPid()); and System.exit(0) which both work fine (I have no problem with activity stack, the "exit" button is in my base Activity.). But there is a problem. When I kill my process and I am back in the shell, I press [Home] button. It shows list of applications that are on the background including my application which has been killed.

Is there a way how to do both: 1) kill the process and 2) remove it from the Android application list that is shown after user presses [Home] button? Thanks for all replays (with the exception of that stupid "you should not exit applications explicitly on Android"

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Android :: Handle Screen Orientation Changes With An Activity Started Within A Tab's Activity

Nov 2, 2010

I have a TabActivity, and each Tab corresponds to its own Activity. In one of them, in the onCreate method, I use startActivityForResult to show a dialog (specifically, Bump's BumpAPI activity).

code:...............

The problem is that when the screen orientation changes, it tries to create the tab's activity again which makes another BumpAPI dialog, resulting in multiple stacked on top of each other. Do I have a hook into the started activity to cancel the previous one when the orientation changes?

A workaround seems to be to add a button that when clicked, starts the second activity, but that adds an unnecessary step.

Also, I can't fix the screen orientation for the entire tabActivity because some of them require typing and users may want to use their physical keyboards.

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Android :: Finish Activity Not Started From Current Activity

May 1, 2010

I have following problem with my application: From my main activity ("activity 1"), there is a menu from which user can launch an action. This action will result in an Intent being received by a BroadcastReceiver, defined in my application. Finally, this BroadcastReceiver will start an activity ("activity 2") to deal with this intent.

The problem is that I have a "quit application" entry in my menu, and I can only finish() currently active activity. ie I am not able to finish "activity 1" from the menu of "activity 2". And I can't use startActivityForResult() as "activity 2" can't be started from "activity 1". Any suggestion would be much appreciated Thank you very much guys, regards.

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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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Jelly Bean :: Process Errors After Servicing The Phone?

Mar 18, 2014

how to resolve this issue? I believe samsung has an issue with 4.2.2 upgrade, I own Galaxy Grand GTi9082, after upgrading to 4.2.2, the phone hangs freezes and is literally unusable. I read online that upgrading thro wifi doesn't update the binary and hence went to service center. They reinstalled everything and flashed the phone.

Still I am getting errors like process system has stopped, phone freezes a lot. I am waiting for 4.4 kitkat upgrade but not sure if Grand will receive it or not, Grand 2 is slated to have the upgrade. Is it time to change the phone or something else can be done?

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Android :: How To Launch External Activity In Current Activity's Process?

Aug 27, 2010

My app is comprised of a set of reusable Activities that other apps can reuse. For various reasons, I would like my Activities to be launched in context of the invoking Activity's process, instead of always being launched in my Activity's process (default behavior on Android). How can I achieve this?

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Android :: How To Get Visible Size On Activity?

Jun 17, 2010

How can I know the visible size of my activity? I'm trying to get the Activity real size, not the height and width from getHeight() and getWidth(),which gives me the screen full size.

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Android :: Inform An Activity That Another Was Just Started?

Mar 31, 2010

I just want to get numbers of times to be used for each Activity.
So the very straightforward method I thought is increasing the count for an Activity when it was started. But how can I get the information?

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Android :: Can An Activity Find Out Where It Started From?

Jun 18, 2009

Is there a way to do this?

Can you access the activity stack in a way to grab what activity came before the one now in view?

I have a situation where an activity needs to know where it was started from, so it knows what data to display in that current activity.

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Android : How To Know What Activity Has Started Current

Oct 19, 2010

How can I know what Activity has started the current Activity? Is there any specific method like, i.e. getIntent().getCallerActivity() or the only way is saving some information within the Intent using putExtra()?

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Android :: IF Statement For Intent Started Activity

Aug 25, 2010

I have a central activity that can be launched from two separate classes. I was hoping that in this central activity I could have an IF statement like

if(this.getIntent() == MainMenu.class)
{
// Do something here
}

But obviously that isn't legal so how could I structure an expression to check from what class an intent was started.

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Android :: Detect Activity Started From Service

Jun 25, 2010

I have small simple Service and big MainActivity with UI. Service is called periodically from AlarmManager. My Service need to know if MainActivity is on the screen and inform MainActivity about state changing.

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Android :: Finish An Activity Not Started From Service

Jun 17, 2010

I've a service which listens to user request for ending one activity and starting another activity. For Ex: Say there are activities1,2 ,& 3. Now if there is already activity1 started by someother activity then based on the user request i need to stop activity1 and start activity2 or activity3. If the acitivity1 is started by my service then i can do finishactivity(requestcode) and shall receive a call to onActivityResult() then i can start next activity 2 or 3. But can i stop the activity1 which is started by some other activity from 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 : How To Clear Intent That Started Activity?

Jun 30, 2010

At the beginning Activity is launched by an Intent and something is done with this Intent. When I change orientation of my Activity, it's reloaded again and Intent is passed to the Activity. How can I clear that Intent to prevent Activity from using it again?

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Android :: Detect If Activity Front Most And Visible To User?

Jun 28, 2010

I would like to launch an intent when any of my activity is visible, otherwise I will put it up as a notification, and will be fired by the user. To decide this, I need to know if any of my activity is front-most, how do I that?

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Android :: Pass Data From BroadcastReceiver Through To Activity Being Started?

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 :: Communicate With A Location Manager Started From Another Activity

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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Android :: Background Activity For Map Started Again When Orientation Change

Apr 6, 2010

i've developed an android app that's fetches an xml file and displays this data via several markers on the map. This works fine so far. The problem right now is that when i switch the orientation of the phone (portrait->landscape or vice versa) the markers disappear for a small moment, the xml processing is started again and then they reappear. Is there a way to prevent this re-loading of the file? It only takes about 2-3 seconds.

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Android :: How To Determine View Size Right After Activity Has Been Started?

Feb 19, 2010

I want to do some data processing (in a thread) right after my main Activity starts. For that data processing to be started I also need to know a visible size of my main View (which is a LinearLayout currently, but whatever).I wonder how to do that. I.e. I wonder what is the entry point (callback?) I should use to be sure that my main View has been layed out, so i can use view.getWidth/getHeight? Is creating a custom View and reimplementing it's onSizeChanged() - the only way? In this case how should I properly describe it in my xml layout file? (it will contain some child views)

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Android :: Pause Flash Content In WebView When Activity Isn't Visible?

Aug 7, 2010

I am experimenting with using a WebView to display Flash content inside my activity. Everything is working pretty well, but when the user hits the home key to put the activity into the background, the Flash content keeps running (sound keeps playing, etc)

I have noticed that both the stock Android browser and Dolphin Browser seem to avoid this problem, and properly pause the Flash content when the browsing activity is put into the background.

Ideally I would like a solution that kills the WebView completely if the activity is finishing, but pauses it otherwise (basically copying the default behavior of the browser)

Here is a simple test I put together that loads a game on Kongregate which has some background music:

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

I took a look at the latest source for the stock browser, and it seems to be doing something similar (calling pauseTimers/resumeTimers), although I fear the code I have been looking at is out of date, because it is calling functions that don't seem to exist anymore.

I did verify that the call to pauseTimers is working by testing with a simple JavaScript setInterval which updates a counter. Is there something else obvious that I should be trying in regard to Window or View management?

The documentation for the mobile Flash player says:


Flash Player will also automatically pause SWF playback it is not in view or the foreground application, for example when a call is received or alarm goes off, to reduce CPU utilization, battery usage and memory usage.


This seems to be working perfectly in both the stock browser and Dolphin Browser, but not in my app. Any ideas/solutions would be greatly appreciated!

Update: Here is the function we ended up adding to our activity to get this to work. We call it with "onPause" in the activity's onPause function and "onResume" in the activity's onResume function:

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

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Android :: Java.lang.NullPointerException - Stop Started Activity

Jul 22, 2009

I have one Activity, that starts one Service and my service will lunch one Activity, i wanna to stop the Activity which one started my my Service after few seconds. Is there any way to achieve. Has anyone experienced this type of scenario.

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Android :: Pausing Main Game Thread Until Activity Started

Aug 13, 2010

In my game when the user completes a stage, I want the main game thread to pause/sleep/wait and a new activity to be launched called StageClear that displays information about points scored etc. After this has been displayed and the user has pressed continue I want the original game thread to resume where it left off. I have tried to implement this but have so far been unsuccessful, probably because I'm new to dealing with multiple threads and also the idea of synchronizing them. I most recently tried to implement a shared package-visible object that could notify after wait was called on itself, but I am getting errors in eclipse so it won't even compile, I think because though the object is declared public in an inner class, it cannot be seen or recognised by my activity elsewhere in a file in the package. I have already built both activities but my issue is getting the main game one to launch the other, and pause whilst it waits for this activity to finish, before the main game thread continues execution.

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Android :: Activity Not Started Its Current Task Has Been Brought To The Front

Sep 23, 2010

I have a very simple android project. I got the following error message when I try to run it. The emulator is running but the application doesn't come up. I couldn't find any useful information online.

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

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Android :: Simple Activity Switch Not Working - No Errors

Feb 19, 2010

I have a basic calculator app I'm making. Two activities, the main one and ResultView.

I've made it where I click a button on activity A to go to activity B. The log says activity B is started and "displayed" successfully, the title for the new activity loads, but the body does NOT show. I added a simple Text view with static text.. see the result.xml at the bottom. I also tried inserting information programmatically, but that didn't do.

When I debug the program, I tried putting breakpoints as the activity is called with startActivity() as well as on the first line of the onCreate method within the ResultView class (my activity "B") but the program never hits the second breakpoint. In fact, it looks as if Looper.class is called in the end.

This bit of code is placed in the button handler on acitivity A:

CODE:........

The activity is in the manifest, within the "application" tag:

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

If more info is needed, let me know...in short, "HELLO WORLD" does not display at all.

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Android :: ActivityManager - Warning -Activity Not Started Its Current Task Has Been Brought To The Front

Aug 25, 2010

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

Here is the code where the problem lies....

It doesn't give me an error it says exactly this when I run the android emulator

"[2010-08-25 09:12:42 - doppler_test] ActivityManager: Warning: Activity not started, its current task has been brought to the front"

What I think this means is that the intent of the bluetooth function and the button intent is only operation on a hierarchy system. What I mean by this is that if I were to move the button opperator above the Bluetooth stuff the button will work, but currently when the app is run Bluetooth works but when I press the search button nothing happens.

What else may be helpful is my XML code for the button so here it is......

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

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Android :: Splash Screen - Warning - Activity Not Started Its Current Task Has Been Brought To The Front

Nov 2, 2010

I want to display a splash screen followed by my trial.class.I am not getting any error but warning as:

Warning: Activity not started, its current task has been brought to the front

I have different-2 approches for this each time this warning is being displayed.

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

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Android :: Progress Bar Not Visible With White Background In 1.6 Sdk / Make It Visible Under All Colors?

Sep 21, 2009

When i ran my old application in 1.6 i noticed that the progress bar was not showing up on the screen.When i analyzed it further i found the issue.The progress bar is getting activated but its not visible since my background color is also white.When i changed the background color i was able to see the progress bar.Is there no other way to make the progress bar visible other than changing the background color..Shouldn't the progress bar be visible under all background colors??

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