Android :: Static Variables Of An ApplicationContext Subclass Left Untouched When The Process Is Killed?
Sep 7, 2010Do static variables of an ApplicationContext subclass left untouched when the process is killed?
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Android :: Need To Use Static Variables In Droid
Mar 19, 2010In android, are using static variables a recommended practice?
E.g, implementing a Singleton pattern in Java, I usually do...
Also, when does this get cleaned up by the Android JVM?
Android :: Activity Lifecycle And Static Variables
Jul 14, 2009I just ran into a situation where it looks like a static variable reference is persisted across activity sessions. I didn't expect that because I thought that when an activity exits, it's de-referenced and garbage collected. I am wondering if anyone can shed some (more) light on when the VM eliminates object references for Activities and Services and in particular when static variables get reset to default values?
View 7 Replies View RelatedAndroid :: Alternatives To Static Variables In Droid?
Jun 17, 2010I am using static Arrays and HashMaps to store some values in my AppWidgetProvider class. But they are becoming null when the process dies, so the widget does not work anymore. Are there any alternatives to using static members to store data for an AppWidgetProvider in Android?
View 5 Replies View RelatedAndroid :: All Static’s Variables Retaining Values When Launching Again
Dec 1, 2009I have been facing problems to manage statics variables used in my android application. If we exit the application against a particular event (touch or key event -which is must for my app), all the statics variables are retaining the values when I am launching it again. I am invoking Activity.finish() method for termination . I know there is a collection type class available called Bundle and we can use it to save the states of all the statics and get those back when again creating the same activity during relaunch, but it would be a hard task if we want to port some j2me applications to Android because of having thousands of statics variables. Is there any way to kill the application completely including all the statics variable used there?
I tried with System.exit(0) and it works well for Android G1 and G2 (tested in firmware 1.6). But in Android Robyn (prototype) the same causes a major defect ("Activity not responding" popup apears just after exit) and I came to know from android dev forum that calling System.exit(0) is not recommended for termination of an activity.
Android :: Parsing XML And Initializing Static Variables Of Some Class
Dec 21, 2009I have an application that is driven by a configuration XML: various app properties are loaded at the app start-time by parsing the XML and initializing static variables of some class. The data read from this XML drives different Activities of the application. Presently, I have called the "parsing and the properties-initialization" from the onCreate() of my Main Activity. I have a few questions as regards this case/approach: Should I invoke the app initialization method from the Application Object or is the current approach correct?
What advantages/disadvantages do/would we get/have if I choose to invoke it from the Application object? Do we really need a static class to store app properties? Or can we have all the properties as a static Collection variable in the application object? Parsing a XML(~200 nodes) at app load time might take some time (not sure how long tho); How can I avoid the dreaded ANRs? I am using a Pull Parser.
Android :: Static Method In Java Accept Only Final Or Non Final Variables Within Its Method - But Not Static
Sep 15, 2010Why should a static method in java accept only final or non final variables within its method, but not static?
For example I have the following method:
CODE:.................
Android :: Accessing Environment Variables By The Running Process
Mar 3, 2010I want to know if there is a way to pass environment variables to the running process in Android. If yes, how should one set those environment variables.
View 4 Replies View RelatedAndroid :: Application Gets Killed - Because Provider Is In Dying Process
Apr 9, 2009After long running the Media|Player (audio mode) the app I'm developing often crashes w/ the following error: > Process android.process.media (pid 14795) has died. > Killing <my app> because provider com.android.providers.media.MediaProvider is in dying process android.process.media
View 3 Replies View RelatedAndroid :: Activity Of Killed Process Still Visible In List After Home Pressed
Sep 23, 2010like 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"
Android :: ApplicationContext.java And Activity.java - Is ApplicationContext Not Used
Sep 29, 2009I was going through the code for Activity.java and ApplicationContext.
Both these classes define many functions of Context Interface. Take for example startActivity.java
Activity Class has its own implementation of startActivity ApplicationContext class also has an implemenetaion of startActivity.
Now there are 2 observations...
CODE:..........
Questions: 1. Who uses ApplicationContext class? 2. Does Activity class ever deal with ApplicationContext class (as given in the javadoc comments of ApplicationContext.java).
Android :: Android - Massage Viberator - Application Does Not Stop Vibrating Even After The Process Is Killed
Oct 18, 2010I will try to be as brief as possible... I have published a very simple android application it's name is "Vib-e-rator PRO". It's purpose is obvious, it can be used as a masssage vibrator or as an erotic stimulator...
My Problem is don't have an Android Phone to test my app in real time.
I have been recieving mixed comments from people. A few users say its working fine. But majority of them complained that the Phone would n quit vibrating even after the closing application.
Later i speculated that when ever the user switched off the vibrator and quit the app it would work as expected. If any user (most of em) directly closed the application ( either through the close option provided in the app itself or by pressing the END button in the phone ) without switching off the vibrator then it would not stop vibrating.
So i added myvib.Cancel() (myvib is the context for Phone Vibrator) in the exit block the close option provided in my app. For the other scenario, when it is closed by pressing the END button in phone, i have no idea how to solve it... So friends please advice me what is necessary to do... The comments i have been receiving from many users of my app is really embarassing....
Android : Closing Activity Completely / Process Killed By Activity Manager Service
Aug 2, 2010Whenever 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.
Android :: Make Sure Process Killed When I "quit"?
Sep 18, 2009I have an app with multiple activities and a local service.
if I finish() all the activities and stop the service, the process still exists (if I go into adb shell and type ps, I still see it).
is there a way to make sure the process is killed when I "quit"?
Android :: Application & ApplicationContext ?
Aug 13, 2009Since activities are the things that interact with the user, they are the only things that can directly show UI. The Application class exists because my arms were twisted into making it. There is nothing actually all that useful about it, as far as I am concerned. ;)
We have several proxy interfaces where we make calls to backend services -- I thought a specialized extension of Application would be useful to hold these proxies as well as a client interface where we make the call, to reduce the number of objects being created and cutting down on Garbage Collection. A singleton if you will. Is this an erroneous assumption?
I also was using the Application as a location to fire off a thread to load globally accessible data needed by the application -- should I move these into an Activity and store the data in the sqllite? It seems like a lot more work to store them in a database if I'm just going to query them the next time the app pulls them down. I plan to write a mechanism to sync the data to local sqllite in the future, I'm just short on time.
I'm currently running into a problem where I'm getting an NPE back from a subsequent activity where this data is not found--even though I saw it being loaded in my Application subclass and stored there.
Android :: Call Non Static Method In Static SQLiteDatabase Class
Mar 30, 2010i want to display a msg to the user (msg box or Toast) when exception happend in a static SQLite Database class that i use. the problem is that i cant call a non static method in a static class , how can i handle this. this is the class
private static SQLiteDatabase getDatabase(Context aContext) {
and i want to add something like this in the class when exception happen but context generates the problem of reference to non static in static class.
Context context = getApplicationContext();
CharSequence text = "Hello toast!";
int duration = Toast.LENGTH_SHORT;
Toast toast = Toast.makeText(context, text, duration);
toast.show();
Android :: Cannot Make Static Reference To Anon-static Method
Feb 7, 2010I'm having some issues with the old "Cannot make a static reference to a non-static method" error in my Android program. I am creating a sand falling game (similar to the Powder Game) and I created a class called Control to create a Control Bar at the bottom of the screen with a slider for brush size (that works fine) and a button to pop up a Dialog to allow users to pick the selected element. However, when I call DemoActivity.showDialog(2) from my code, it gives the static reference to non-static error (DemoActivity is the main activity of my application). I also tried changing it to just Activity.showDialog(2), but I got exactly the same error!
Here's my code:
CODE:................
I fixed it by adding the following to my Control.java code:
CODE:..........
And then calling control.setActivity(this); from my onResume section of DemoActivity.java!
Android :: Storing References To ApplicationContext
Apr 20, 2010I have a static Preferences class that hold some application preferences and stuff like that. Is it ok to store reference to ApplicationContext there? I need that reference so i can get cache folder and stuff like that in classes that don't inherit Activity.
View 1 Replies View RelatedAndroid :: What Is Applicationcontext In MakeTest() Method
Jul 6, 2010CODE:.......
What is the 'HelloGridView.this' refers? why it is called as appliactioncontext?
Android :: Non-static Method Cannot Be Referenced From A Static Context
May 26, 2010I am modifying the source code here: http://thinkandroid.wordpress.com/2009/12/30/getting-response-body-of-httpresponse/
I get this error:
code:.............
This error is line 13 on the second box.
Replace Single Row View In Custom STATIC ListView - STATIC Data
Mar 18, 2013I have Eclipse Juno and I'm working on an app with that.
The main activity will have a scrollable menu that takes you to all the other activities.
So the general structure/outline right now:[HIGH]Relative Layout ImageView (header logo type thing) ListView (the actual scrollable menu)[/HIGH]Here's the problem though... I can't find any simple list tutorials. I can easily make a single line list work but I need to make a two line list and one that is static, not dynamic and no examples are out there for that. It's like if you want to make a 2 line list, you can only learn how to do it in the most code-heavy ridiculous way possible.
Essentially what I am looking for with the list is this: Item one: Centred, bold, non selectable title (Resources)
- Item two-??: two line list items, click-able to a new activity, title of the section on first line, description on the second line.
- Item ??: Centred, bold, non selectable title (Tools)
- Item ??-??: two line list items, click-able to a new activity, title of the section on first line, description on the second line.
Nothing dynamic that is ever going to change, no super complex wonkey calculations, just to simply have the data set in stone (preferably via XML) and to call it into the list.
I experimented with some of the other list views and no matter what I did, I could get, via editing the resources and NOT using Java, more that one item on a single line but it wouldn't format it properly according to the layout I guess because I haven't got the ID correct or whatever I don't know.
I mean, all the examples I've seen for a 2 line list are extraordinarily over-coded and just bloated. I mean I have a website I am still working on in C#/ASP.net that has far more complex things in it with half the code that I've seen for the examples of the two line lists.
I tried on my own to figure it out (I am decent with C# and vaguely familiar with Java, self taught, and programming for some other systems like Python, again all self-taught), but like ALL coding references, they're organised by the actual code you implement (that you don't know) instead of by what you want it to do (so you have to search the whole code base to find something that you don't know what it's called but know what it does). >:C
Android :: Static Vs Non-static Inner Classes
Mar 9, 2009I have been finding it convenient to extend Handler in many of my activities to handle messages specific to the activity. The handler sublass is an inner class of the activity and needs to access its state. I am wondering if there is any performance difference between making the handler subclass static and passing in the activity explicitly in its constructor or making the subclass an "instance class" and letting the vm worry about my accessing members of the containing activity.
The static approach:
CODE:.............................
Android :: How To Get Right / Left Arrows On Activity To Indicate More Screens To Right And Left?
May 24, 2010I have a ViewFlipper which contains a few linear layouts.I need to allow the user to flip through them.I've seen other apps which have arrow/triangle indicators on either side of the screen, which, when pressed, flips to the next view in the set.
View 1 Replies View RelatedAndroid :: StartActivity From Subclass?
May 15, 2009I have a Activity and I have a class which extends this Activity. In this subclass I call:
startActivity(new Intent(this, CameraView.class))
Which should start the "CameraView" Activity. However, I always get this error:
CODE:...........
If it makes any difference the subclass creates a ListView and when a row of the ListView is clicked it calls startActivity();
Android :: StartActivity() In A Subclass Of Dialog?
Nov 24, 2010I have one subclass which extends Dialog class, it seems I can not use startActivity() function to start a new Activity in this subclass which extends Dialog class, how to resolve it?
How to start a new Activity in a Dialog subclass? (In my customized dialog subclass, I have one button, when pressed, I would like to have a new Activity start).
Android :: Subclass Of ArrayAdapter Not Working
Nov 4, 2009I have subclassed ArrayAdapter to set the color of text to RED if the string does not contain 100%, this has been added to a ListView. The problem is that some of the rows show as red when they contain 100%.
CODE:.....................
Sony Ericsson Xperia X10 :: Unlock Slider Suddenly Changed From Left-right To Right-left
May 16, 2010I love the phone, but the other day the unlock slider suddenly changed from left-right to right-left, and I'm right handed. How do I change it back ?
View 4 Replies View RelatedAndroid :: DDMS Not Listing Process - Via Command Line To Attach Process To Debug
May 21, 2010Sometimes the DDMS in the Eclipse not listing the process.
To do the debug in this condition,
1) Is their any way force the DDMS to list the process?
2) Any command to attach the process from the command line?
Android :: Remote Service Process Persists - I.e. Won't Disappear From Process Table
Feb 21, 2009At a certain point in my program, when I'm completely done with my service, my activity executes unbindService() and stopService() -- yet the process persists. I can tell that it persists because I run "ps" in "adb -e shell":
CODE:.............
"adb logcat", I can show you the sequence of events:
ACTIVITY: context.unbindService(serviceConnection);
SERVICE: onUnbind();
ACTIVITY: stopService(serviceIntent); & returns true!
SERVICE: onDestroy();
First, my activity calls unbindService(serviceConnection). According to the documentation, unbindService() will "Disconnect from an application service. You will no longer receive calls as the service is restarted, and the service is now allowed to stop at any time." So that is fine, and it is happening.
Appropriately, we see the onUnbind() call happen on the service side. According to the documentation, onUnbind() is called when "all clients have disconnected from a particular interface published by the service." So this confirms the correct service connection is being passed, and that the service is responding accordingly.
Next, my activity calls stopService(serviceIntent), and returns true. According to the documentation, stopService() does the following: "If there is a service matching the given Intent that is already running, then it is stopped and true is returned; else false is returned." Again, this is happening and returning true.
In response, the service's onDestroy() method is called. According to the documentation, onDestroy() is "Called by the system to notify a Service that it is no longer used and is being removed. The service should clean up any resources it holds (threads, registered receivers, etc) at this point. Upon return, there will be no more calls in to this Service object and it is effectively dead."
At this point I expect the process to disappear from the process table. Yet it remains indefinitely. But why?
Also, the process is so persistent that I can bind to it again, and I see that it is the same exact process responding because the PID (process ID) is the same!
LG Ally :: Process' Won't Open - Pop-up - The Process Com.android Phone Has Stopped Unexpectedly
Nov 24, 2010So, I decided to give Tridents ROM a try about 10-minutes ago.
I used ROM Manager, backed-up my old ROM, then downloaded Velocity 0.2.
Now, my phone will do nothing, it turns on and shows the red Droid eye, then when it's time to go to the home screen I get pop-up after pop-up saying that "The process com.android.phone has stopped unexpectedly. Please try again."
I have no way of getting on my phone at all, what can I do?