Android :: Bitmaps And Out Of Memory Error (Allocating Back Buffer)
Sep 2, 2010
We are also having occasional problems with OutOfMemory errors in createBitmap. It tends to happen after a few orientation changes when we are allocating the backbuffers. I have made it so that it calls recycle() on the old bitmaps (if any exist) and does a System.gc() before allocating the new backbuffers. What we are doing is allocating a backbuffer that is twice the width and height of the screen so that we can quickly zoom in and out.
With a 854x480 screen this would presumably be 6.25MB in size. The problem as I see it is the 16 or 24MB maximum heap size per process. This is unreasonably small, especially on devices that have 512MB of RAM. Ideally the max heap size should be something like 64MB, or perhaps allow apps to request a larger heap size from the user.
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Jun 16, 2010
I'm running into OutOfMemoryErrors when allocating bitmaps. This is not something I can reproduce with emulators, and has been reported by a few beta testers with the HTC Incredible. I'm not sure I can solve this directly, and my best hope is to follow best practices for bitmaps and memory thereof. But looking for those best practices based on groups archives left me with more questions than answers. If anyone has a chapter about this in their book, I will buy the book. Here are the things I've mulled over so far:
1. I have a bitmap for a drawing buffer. It is about 3-4 megabytes on some devices. This is the biggest bitmap I have, and without it, I wouldn't be able to much of anything useful in my app. I am assuming that it would not be useful to use inPurgeable if this is a bitmap that is drawn into. Is this true?
2. Next biggest in the hierarchy are some bitmaps that are about 22K bytes and 256K unpacked. Since I believe about 25 of these might be used at one time, I have a cache with a size of 25. I am careful to use BitmapFactory.Options.InPurgeable, so I believe that could make them take only 22K each, but I don't see that as guaranteed. Maybe they are taking 256K each, which would put me in the danger zone. As they are cycled out of the cache, I call bitmap.recycle(). I think this a good practice. Is it?
3. Next are some resources with icon size 32x32 pixels. There are about 50 that could be used or reused. If I use code like this:
Drawable s = mCtx.getResources().getDrawable(R.drawable.symbol_icon);
Where s is a local variable to rendering. Suppose I call this 37 times. Am I to assume that Android will do something smart like create only one bitmap for this resource even if it is used 37 times? Or am I to assume that Android will do something stupid like create 37 bitmaps and keep references in an obscure location that will prevent garbage collection? Do I need to get more access to these bitmaps and do something smart myself?
4. Finally are some other icons used for menus and ImageButtons. Most are declared in layout files - so I don't touch the bitmaps directly.
I'd like to make my memory usage more efficient, but don't want to spend time on things that will amount to shuffling chairs on the Titanic. And how do I best measure this usage? Interestingly enough, I've tried using the Allocation Tracker and it says I haven't allocated a single bitmap. In light of the above, I don't think that's right.
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Jul 24, 2010
I have a scrollable map app which for now has a huge bitmap. It loads fine on startup, but when it looses foreground status and the user brings it backs again im getting an out of memory error. In onPause it trashes the bitmap using recycle, and marks it as null. The onResume checks to see if map==null and will load the bitmap back again, which is crashing the program despite me recycling the bitmap...Here are some bits of code. All of the other references to Bitmap map first check if it is null before loading/drawing..............
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Mar 26, 2009
How can one track memory consumption in Android? The Android "Heap" view in Eclipse and java.lang.Runtime methods seem failing for my purpose. I tried to figure out how much memory my app consumes in order to make decisions for future directions. Most of the memory goes into Bitmap objects. Just to test memory consumption I created huge bitmaps in a Loop and logged the java.lang.Runtime memory values: created bitmap (610k free, 2371k total, 16384k max) created bitmap (615k free, 2371k total, 16384k max) created bitmap (615k free, 2371k total, 16384k max) created bitmap (615k free, 2371k total, 16384k max)
Nothing seems to hapen, but on the fifth Bitmap: java.lang.OutOfMemoryError: bitmap size exceeds VM budget at android.graphics.Bitmap.nativeCreate(Native Method) at android.graphics.Bitmap.createBitmap(Bitmap.java:343) at de.greenrobot.colorball.GameView.init(GameView.java:86)
This seems confusing at first. Is java.lang.Runtime the right place to check application memory stats in Android at all? Are Bitmaps allocated outside the app's heap? How can I track it?
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Dec 24, 2009
I'm trying to use the Media Recorder to have my application continuously record audio in memory (to a circular buffer of a known size). Indeed, I'd like to be able to play back the past 10 seconds of recorded based on a certain event in my program. Much of the Media API is designed to linearly record audio to a file. Has anyone an idea on how I could best do this with or without the default API?
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Jan 16, 2010
I'm writing an App that needs to continuously record audio in memory and email the last 30 seconds of audio when required. Much of the mediarecorder API is designed to store linear audio in files. Could anybody point me towards a way to continuously record audio in memory, using a circular buffer using the SDK?
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Sep 2, 2010
I have a 3D game and I am using color-picking to know which object was selected.
When the user touches the screen, I draw each object with a different color. Then I read the color where the user touched the screen to know which object was selected. After that I draw each object with their respective textures/colors. (everything done during one onDrawFrame pass)
The problem is that sometimes the colored objects appear on the screen (~5% of the times the user touches the screen) and it is even worse on slower hardwares.
This is my pseudo code:
CODE:...........................
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Feb 3, 2010
I am trying to get my environment setup to develop an android app so I downloaded the SDK(http://developer.android.com/sdk/installing.html). After unpacking the files and running the SDK Setup.exe, the Android SDK and AVD manager opens up.
During the installation process, I got an error stating the following: Failed to fetch URL https://dl-ssl.google.com/android/repository/repository.xml, reason: HTTPS SSL error. You might want to force download through HTTP in the settings.
So then I proceed to the SETTINGS tab and activated the check box which states: Force https://... sources to be fetched using http://
Then click save and apply. A box flashes on screen, which appears to be the previous box which showed the error, except this time, the progress bar races from 0 to 100% in about a second and then disappears. So clicking the FORCE option seemed to have worked for that issue.
Now, I click on the AVAILABLE PACKAGES tab which is where the Android manager actually downloads all the available resources including every "SDK Platform Android Vx.x" and every "Google API by Google Inc., API x, revision x"
There are green check marks in every check box indicating that I need to download every update.
SO I click INSTALL SELECTED.
The confirmation page comes up. Again, I click INSTALL ACCEPTED.
The INSTALLATION ARCHIVES box pops up and this is where I get stuck. I receive the following errors and I'm not sure what to do from here..
CODE:..................
I did some googling on "No buffer space available (maximum connections reached?)" and apparently it is a socket issue that typically occurs when a database query is called and there are a large number of TCP connections.
But beyond that I'm completely stuck. Can't find anything on my issue relating to Android SDK installation and I don't really know where to turn to continue with the SDK installation.
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Jun 16, 2010
i have a aplication on the android market, in wich exceptions and errors are catched and sent to me by acra. But i receive quite a lot out of memory errors.. In different kind of classes...some my app, some general java.. Does this always mean there is a problem in my app, or can it also be the phone ran out of memory due to a other process? Will users also get a fc dialog?.....................
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Jun 11, 2010
I have a very small activity that must show an image.
If picture is not very small (for example 1.12 Mb 2560x1920) it produces out of memory on change screen orientation. I tried getDrawable.setCallback(null) but no luck.
CODE:...................
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Sep 1, 2010
In my application I change layouts very frequently with most of the user interactions. Each time when a new layout is drawn, the applications memory size is increasing. I can see this in DDMS. This is absolutely fine. I have analyzed my application with memory analyze tool and it shows that there around 42 Table layouts at some point of time and this number increase as user does more interactions with the app. Now my question is why doesn't the GC collect the stale layout objects. Does GC collect on UI widgets also??? I feel it does but can any one tell me what may be the reason for GC not collecting my UI elements.
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Mar 4, 2010
I have a couple of worker threads in my app which I stop and restart during onPause() and onResume(). I use a method that clears all the reference to and from the threads when stopping. However ThreadGroup is still retaining a reference to my threads and causing a small memory leak. After pausing and resuming my app about 40 to 50 times I will then get OutOfMemory Errors when loading bitmaps. Allthough this doesn't effect most of my users I do get occasional reports of crashes. How can I remove the references to my threads from ThreadGroup so that GC can do it's job.
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Jun 14, 2010
I am using following code to display bitmap in my imageview.
when i try to load image of size for example bigger than 1.5MB it give me error
any one suggest me solution? code...
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Sep 29, 2010
I have an application here that has a feature of showing a POI on the map. It's only one POI and it is only drawn when it's actually within the visible screen area. It works perfectly for a while but if I play around zooming in and out and dragging, it will eventually crash. According to Logcat, the reason is always an OutOfMemory error.
At first, I thought it was a bug on the Google Maps API. After some researching and seeing some Romain Guy posts, I was kind of convinced that I had done something stupid on my app that kept me running out of memory from time to time. Then I ran some more detailed tests with Heap Analyzer (Eclipse) on and I saw that even though I had 2+, sometimes 3+ megabytes left of free memory, I was still getting those annoyings Force Close messages caused by OutOfMemoryError. Most of the times it crashes when trying to alocate some 614kb chunk of memory regardless of how much I have left.
This problem happens a lot on Nexus One 2.2.1 and on HTC Evo 2.1. After some little testing, I got no crash neither on G1 1.6 nor Samsung Galaxy S i9000 2.1. But I cannot say for sure the G1 and Galaxy will not show this problem after more testing. I can only think of a memory fragmentation problem. I hope this problem has a solution. I will also be glad if I can just catch this error and prevent the app from crashing.................
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May 22, 2009
I was reading in some other posts that some developers have the same Problem, but till now, no solution. its about the gallery: I have a string array with photos, but when the gallery does show the 2nd Picture it crash with:...............
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Aug 27, 2009
I was using ADT for debugging and then I get this Internal error: out of memory error
Is there any way to avoid this?
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Nov 5, 2009
In my application. I tried to parse XML file. First time it executed correctly. Second time it is showing Out Of Memory Error.
My XML file contains 15000 lines.
can any one know about this?...
My log cat is given below:
CODE:................................
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Nov 20, 2010
I just upgraded my memory card and I would like to get the data off the old one onto the new one. I connected it to my LINUX computer, copied the contents of the old drive, and then copied them back to the new card. No luck. I get a mounted as read only error. Is there a standard way to replicate my old memory card onto my new card and have the phone like it?
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Nov 6, 2009
I am trying upload a video from the application.i am able to upload videos of size lesser than 2 MB but when i am trying to upload videos more 2MB i am getting out of memory error.
plz suggest how do i upload videos?
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Mar 23, 2009
I am using frame animation in multiple page where in each page i am using set of png files. First animation is working fine but when i am trying to call second animation it showing
java.lang.OutOfMemoryError: bitmap size exceeds VM budget
Is there any way to solve this issue.
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Apr 26, 2010
I am trying to retrieve a list of images and text from a web service. I have first coded to get the images to a list using Simple Adapter.
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Sep 15, 2010
I use this method couples of occasion to load text file to display as help file. But I don't know why the following code didn't work. It seems to hang and logcat says "OutOfMemoryError"? All I did was break this out as an separate activity.
---xml---
<?xml version="1.0" encoding="utf-8"?> <ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/helptab"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<TextView android:id="@+id/helptext"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
</ScrollView>
---code---
import java.io.DataInputStream;
import java.io.IOException; import java.io.InputStream;
import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;
public class Help extends Activity {
/** Called when the activity is first created. */
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.help);
InputStream iFile = getResources().openRawResource(R.raw.help);
try { TextView helpText = (TextView) findViewById(R.id.helptext);
String strFile = inputStreamToString(iFile);
helpText.setText(strFile);
} catch (Exception e) {
} }
public String inputStreamToString(InputStream is) throws IOException {
StringBuffer sBuffer = new StringBuffer();
DataInputStream dataIO = new DataInputStream(is);
String strLine = "";
while ((strLine = dataIO.readLine()) != "") {
sBuffer.append(strLine + " ");
} dataIO.close();
is.close();
return sBuffer.toString();
}
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Aug 11, 2009
I am trying to do repo sync and every time I get this error. fatal: Out of memory, malloc failed fatal: index-pack failed
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Aug 3, 2010
After updating to 2.2 I am unable to complete a sync of Contacts in Exchange ActiveSync. Get an error indicating System out of Memory. I have not transferred anything to the SD card yet but everything worked fine before the update.
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Aug 11, 2010
I have had my desire about 2 weeks now and it is great. I have updated to 2.2 and all seemed to be working fine but today I keep getting error messages saying Low on space - the phones storage is getting low and Not enough storage space for sms.Don't know why this is as I only have about 10 apps installed and have moved the ones I can to the SD card.Is anyone else having this problem?any ideas people?
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Aug 19, 2010
In my application am displaying a list of names and respective pictures ? I am picking picture from gallery through Durable.getFromPath(). ? am displaying list , some i encountered with out of memory error ? please help me to sort out this error?
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Sep 9, 2010
I've had my phone (Droid1) for about 8 or 9 months and I love it. I just recently updated the phone to the 2.2 myself. I wasn't sent it like the rest of the phones. One problem I've ran into is memory. Everyday it says that I'm sort on memory, but I don't have a lot of applications. I have maybe... 8. I've deleted most of them because it says I need room. My question is.. what can I do to get memory back? does rooting help with memory? Should I restart my whole phone, if so, how do i do that?
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Sep 26, 2010
So I am low on my internal memory on my Desire down to 14 mb. is there a way to get back my memory after deleting apps ? I am always deleting apps because because of low storage that comes with the phone? Any tricks that I can use? I really dont want to factory reset because I use Launcher Pro + and I dont really want to set up all my contacts again..
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Aug 27, 2010
Since moving to Froyo I have noticed a problem.there are only a few apps at the moment that you are able to move to the SD card and I have noticed that when you I do move the app my internal memory does not increase back up. eg: say i have 110mb free internal memory and I install a 10mb app knocking internal down to 100mb if I "move app to SD card" it does transfer but my internal is still 100mb. Am i being completely stupid and missing something or have any of you guys had a similar prob?
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Sep 8, 2010
A couple of days ago, I was suddenly unable to play Slacker, Pandora or my regular MP3 music files. Slacker would load, but the songs would not play. Pandora would give me an error message and my regular music player suddenly would not recognize my music files. This all happened suddenly after working fine the day before.I did some online research, but nothing seemed to match all my symptoms. I went to the local Verizon store tonight and they said I had too many apps running. They installed Advanced Task Killer for me, killed my "open" apps and everything works fine now. They recommended that I run it at least once a day.Does this make any sense? I keep reading that we don't need app killers.
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