Android :: How To Find Where Memory Leaks In Activity?
May 20, 2010
When start Activity A, I found the memory usage of application is about 5MB. Then start Activity B from A via startActivity. In Activity B, I created a thread, and traverse file system in this thread, after traversing completed, call finish() and to return to Activity A. At this time, I found the memory usage of application is about 8MB (GC is forced before check memory usage). How to find Where memory leaks? By the way, I checked the memory usage with DDMS.
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Apr 22, 2013
Any user friendly android app which can effectively show which apps cause memory leaks on a phone?
I can only find developer tools to detect memory leaks within apps like Eclipse MAT. Sadly I'm not a developer so I would rather prefer just a list of apps to uninstall and not the exact cause of memory leak within a specific app.
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Jul 18, 2009
I've got an Android app developed, and I'm at the point of a phone app development where everything seems to be working well and you want to declare victory and ship, but you know there just have to be some memory and resource leaks in there; and there's only 16mb of heap on the Android and its apparently surprisingly easy to leak in an Android app.
I've been looking around and so far have only been able to dig up info on 'hprof' and 'traceview' and neither gets a lot of favorable reviews.
What tools or methods have you come across or developed and care to share maybe in an OS project?
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Aug 3, 2010
Will the code cause a memory leak? Essentially I switch between various layouts in my application using setContentView(), and I have member variables of my activity that maintain references to various views (buttons/text views) on the layouts. Am I correct in thinking that if the activity class has a reference to a button and then changes layouts the layout wont be garbage collected because it will still hold a button reference? If this is the case, can I just null the button variable before changing layouts?
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Oct 23, 2010
I have a very simple application which has a problem with getting ListViews to be freed by the GC. i have a ViewGroup which has a ListView. When the page with the ViewGroup no longer has any references to it, and I force a GC, the ListView is not freed. The project in question is quite small and can be found at http://gabysoft.com/download/MemoryLeak.zip. If you run it, the first page has a button and a ListView (which has no items so you cannot see it). When you press the button it switches to a second page which has just a button. When you press the button on the second page, it creates a new ViewGroup and ListView and sets that as the current view. Thus, every time you switch pages, a new ViewGroup/ListView is created, and all references to the old one go away. Hence the old one should be GC'd. However if you switch views 20 times and then force a GC you will see that the ListViews are never freed (i.e. their finalize method (which is logged) is not called). Now here is the really weird part. This happens ONLY if I build my project using Eclipse. If I use Ant to build and install the project, the ListViews are all freed when I do a GC as you would expect. Why would the Eclipse version exhibit this behavior?
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Oct 20, 2010
I have a class 'GListView' which extends ListView and acts as it's own adapter. It is declared thus: public class GListView extends ListView implements List Adapter In it's constructor, I set it's adapter to itself
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Mar 5, 2010
I was trying to find out were my apps memory was being leaked and was able to discover that when calling registerCallback(...) it would lead to a memory leak after a screen orientation change. What could be some possible things that are causing the leak? I've tried many things. And I do have a unregisterCallback(..) call.
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Jul 27, 2010
I've read that it is a mistake and a source of memory leaks in Android application to keep a long-lived references to a Context.
But I don't understand if it is ok to create an class that looks like this one:
CODE:..........
And call it from an Activity:
CODE:.................
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Apr 10, 2010
I just read the article 'Avoiding memory leaks' in android blog written by Romain Guy. http://android-developers.blogspot.com/2009/01/avoiding-memory-leaks.
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May 17, 2010
How to trace the Memory Leaks in Android Development? I am working on eclipse IDE to develop the application. i cant find out how to rectify the memory or window Leaks Exceptions? Any Idea.
Mainly the Window Leaked error raises the Illegal Argument Exception? how to rectify both og this.
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May 21, 2009
I'm writing a widget. Currently, I'm have a simple ImageView, and calling RemoteViews.setImageViewBitmap(). I'm using a service to do the updates.
I thought it might be a good idea to reuse an existing RemoteViews instance, so I'm only querying it the first time around, and subsequently simply call setImageViewBitmap() with the new image.
This works well initially, but after some time I first start getting "!!! FAILED BINDER TRANSACTION !!!" errors, and later, an OutOfMemory exception.
Simply creating a new RemoveViews instance every time works flawlessy on the other hand. I'm just curios why that would be, any ideas?
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Sep 15, 2010
I am New to this Android platform. In one application, there is a memory leak. But I couldn't able to find in which activity or class the memory leak is happening. I am using MAT to get the information that the memory leak is there or not. But not able to find which activity is leaking. Please tell me how to find the which activity is leaking.
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Dec 23, 2009
I am using kind of results search engine, problem is to remember the searching criteria i made singleton static class which keeps only one instance.In my application there are lots of class level private variables, lots of public static variables, a big util class which contains only static final methods.problem is my application get crash any time any where any spot and interesting thing is crash code always surrounded by try{} catch(Throwable e){} block but never catch, i think it may be memory full issue. I want to discuss one sample case, on the result page i also display result related image, i download image from web and using drawable i place image in the imageview, i created static hashmap to reuse images, some time after downlaod 5 images application crash some times click on a result get user to new detail screen get crash and all code surrounded by try catch block, i am new to mobile program this thing has become night mare to me. Last thing, On emulator hardly application crash but when i try to test the application on device, i am using samsung glaxy android supported to test the application it goes smoth and suddenly it start getting crashed, and after crash android relaunch the activity that throws null pointer exception on every click and caught by try{}catch{} block i think after crashing android dealocate all objects only keep the UI objects thats why when after crash i auto launch the activity clicking causes null pointer exception.how can i stop relaunching crashed activity?
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Aug 12, 2010
I have developed a simple application before testing it i want to check whether any memory leaks are there in the application. I don't know how to identify the leaks in Android. I am using Eclipse IDE for development. Is there a good introduction into finding memory leaks in Android apps somewhere?
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Sep 22, 2010
How to detect Memory leaks in Android JNI code? I am using Froyo
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Apr 3, 2010
is there an SDK way to find out the exact amount of memory consumed by a process identified by its pid?
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Jul 15, 2009
I want to calculate the performance for some of the task/process.How to find out the percentage of memory used by each process in the android. - is there any in build classprocess to do this?
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Feb 22, 2010
It would also be handy to know how many memory is still available.I am writing a memory hungry application that tends to crash randomly (in native Code),and my suspicion is that it gets out-of-memory.
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May 21, 2013
I am trying to build simple custom minimal kernel for my android phone (htc explorer). So from where do I find out memory map for it.
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Oct 23, 2009
can anyone tell me any solution or tool provided by Android to find the exact place of memory leaking?
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Jan 10, 2010
I have got new memory card and transfered of old card to new card along with load of new tunes, the phone does not find memory card and when I tried loading memory card to laptop again it is not doing anything, am confused, any ideas as it driving me mad, phone saying SD card missing.
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Jan 24, 2014
I recently updated my Sprint Galaxy Note 2 to android 4.3. Everything went slow, and so it was suggested to hard reset my device. I though I had everything backed up but i didn't. I am trying to recover deleted files. I used the guide I found on this forum here.
My problem is the under /dev/block all the mmcblk files are 0 bytes. Every time I extract I get 0 bytes as well. What should I do differently?
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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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Sep 20, 2010
Where does the installation files over sync store in phone memory,after some time it has a notification low phone memory,where i can find and delete these files?
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Mar 17, 2010
I would need to know when one activity starts or get's focus. I need this notification for any activity regardless of his type, name or whatever - not searching for one specific activity. Checked the ActivityMonitor and the Intent and I haven't found a generic intent for this purpose. Or I hadn't understood well the descriptions from the Intent ACTION_xxxxx.
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Jul 2, 2010
My program has a list of tabs that each contain a list of people.Clicking a person should edit their details, but instead, clicking a person throws an ActivityNotFoundException.
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Jun 14, 2010
Suppose i have a program that' s currently in a PAUSED state. Then the user launches another activity. In this second one, i want to find if the first one is in paused state or not because, if its paused, i want to recover it.
Is there a way to find if a specific activity is in pause state or not?
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May 31, 2010
Sso yesterday, my phone did one of the resets on its own, thinking ok whatever (since its the norm now). When it came back up was saying please insert external memory card. Something like that. So again, its crapped out another card. I would have to check my last post to see if this happened with the old phone or the replacement. Its been just fine, now everything is gone again. I know I should back things up but when u have never had this problem b4 its not something that I always remember to do. I had removed weather widget and beautiful widget as I didn't know which one I wanted and was rearranging icons. Now I cant use either. I was checking for a schedule online.
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Aug 4, 2009
I have been looking for this for a while but I can't find any way of doing it. A contrived example would be a service that simply displays the name of the current running activity as an Ongoing Notification. For instance, when the user is reading a particular email, the name of the activity (hopefully the email title!) would appear in the notifications window and when the user switches to read a text message, the notification would change to show the name of the new activity. Is there a way to do this in Android?
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Dec 9, 2009
I've created my first service, and it's all gone fine, except when the main activity is stopped. What I want is for a user action (button press etc) to start the service, which it does. Then I want the user, some time later, to press another button to stop the service. Which it does. But if the main activity loses focus (i.e. I go to the home screen) when I return to the activity it has no knowledge of the service anymore - even though the service is still running. When the activity resumes, how do I find out a) if the service is running, and if so b) re-bind to it, so that I can then stop it and collect the data I'm after.
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