Android : How To Guestimate Available Bitmap Memory On A Device
May 13, 2009
Part of my application allows the user to color-correct images. When i open an image for editing, i'd like to know what, more or less, the available bitmap memory is for the device that the app is running on.
For the G1, the limit is use is about 6MByte (about a full-size image that can be taken by the phone (3MPixels) with 16 bit color ==> 6MByte). If i try to open anything larger, i often get an out-of- memory exception. Limiting it to 6MByte reduces these OOM exceptions by a great deal. However, i can see future devices having more memory available because (as one of the reasons) they can take larger pics (e.g. 5MPixel or something).
Right now, my app just uses a hard-coded limit of 6*1024*1024. Is there a way to make this variable, to future-proof this by examine the device my app is running on. If so, how?
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Jul 21, 2010
I have a very large image and I only want to display a section the size of the display (no scaling), and the section should just be the center of the image. Because the image is very large I cannot read the entire image into memory and then crop it. This is what I have so far but it will give OutOfMemory for large images. Also I don't think inSampleSize applies because I want to crop the image, not lower the resolution.
Uri data = getIntent().getData();
Input Stream is = getContentResolver().openInputStream(data);
Bitmap bitmap = BitmapFactory.decodeStream(is, null, null);
Any help would be great?
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Sep 27, 2010
Is there any way to pre allocate the memory required for a bitmap. Android's memory model is making it very difficult for me to cache images I need to cache.
It would seem the problem is because the VM heap rarely shrinks itself, so I would like to just allocate memory for bitmaps ahead of time? but I can not figure out how to do this?
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Feb 26, 2009
Ok I am at the end of my rope. I am doing some image processing. I have a large image file which I open and create a smaller bitmap from. At the end of processing I call recycle on everything. I null everything. I run GC manually.
I then try edit another image and I get an out of VM memory error. Bitmap exceeds etc etc.
I am looking at the heap and the secone edit doesn't seem to cause it to increase at all.
What else can I do. Surely google cannot possibly be suggesting that we can open one large bitmap per session and thats it?
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Aug 10, 2010
I have a list view that display about 25 images with size 60x60 pixels. I dowload this images from internet and I store in an arraylist as Bitmap. I need to save it in a arraylist because a listview will recycle views and so I need, wenn the user scroll, to display the image in the new view WITHOUT downloading again from internet
But after some time I got
java.lang.OutOfMemoryError: bitmap size exceeds VM budget
It seams that I got this exception about after loading 20 images ...
Reading in forum I have read about memory heap.
I try to check the memory heap usage with: Debug.getNativeHeapAllocatedSize and Debug.getNativeHeapSize()
When the exception occours both are about 4M.
But android has more than 4M?
When the application start the values are a little less to 4M so it seams is not a big memory usage or memory leak.
To be sure I want to call : ActivityManager.getMemoryClass() but this method is and instance method and I can't find the object to invoke!
But this method say, that al min should an application have 16M!
Any help? I have seen many topics in google ... but all speak about recycle. But if I recycle a bitmat ... then should I download again from internet?
Should I store the image on flash memory or sd card instead an arraylist in memory?
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Jan 15, 2010
My game - Tower Raiders - is continually floating fairly close to running out of bitmap memory. Unfortunately, I haven't found good information on profiling bitmap memory usage so that I can optimize / make informed decisions / add new content if it allows / etc.
I'm aware that bitmap memory is not heap memory, as it's allocated natively. But that it is accounted for somehow in the VM and influences garbage collection. Maybe it's an oversimplification of how bitmap memory works - but I'd like to find a tool etc or some way of determining I as the game is running right now, there are no more than X bytes of usable bitmap memory remaining.
So, if anyone has any advice etc that would help me in these respects I would greatly like to hear about a workflow for this.
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Jun 4, 2010
I've read a lot of previous messages on this topic but couldn't find universal agreement on the whole. I can't reproduce this in house, but a customer got an OutOfMemoryError when using an icon chooser dialog.
This dialog is much like the Grid1 example - only it's in a dialog.
The bitmap memory seems to run out after running the dialog a few times for a customer, resulting in java.lang.OutOfMemoryError: bitmap size exceeds VM budget. Should I try to call recycle on the bitmap from an ImageView when I reuse the view? Or would the ImageView do that anyway?
But even if I do that, that's only a small portion of the bitmaps because most of them are seen without scrolling. The Adapter and the GridView are both local variables and therefore shouldn't be referenced after the dialog is dismissed.
I do believe that it should be possible to use many bitmaps in an app - Google Maps does it, Picture Gallery does it. But maybe I need to learn more rules. Some say you should call bitmap.recycle, some say you shouldn't have to. Many say calling gc.collect will make it worse, etc.
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Jul 24, 2010
I have a large bitmap that i would like to keep in memory when the qwerty keyboard is visible. My app is always in landscape, so this is the only configuration change that will cause a reDraw. I heard this is what onRetainNonConfigurationinstance() is for...but cant figure it out. Can someone point me in the right direction?
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May 26, 2009
When I pass a Bitmap using the Binder Remote service mechanism, does the internal implementation of writeToParcel/createFromParcel of the Bitmap class use shared memory?
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Jul 22, 2010
I'm developing an image editor for Android. When I do some operations with small pictures (600x600 - 1024x768), the program work well. But when I do some operations with big pictures, I always obtain an OutOfMemory Error. I read read many post trying to have the image in memory. Also I looked at the Android's Gallery, trying to simulate the effect of loading the image with lower quality and get the complete quality after a while. But I doesn't get to work with large images.
I thought of using the parameter inSampleSize but I raised the problem of having to perform operations on the image and save it with the original size, so it no longer serves me. The only thing I've done is use the parameter inJustDecodeBounds and display an error to the user if the image exceeds the available memory.
Is there any possibility of working with large images with no memory problems? I need urgent help.
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Dec 23, 2009
I've been doing a lot of searching and I know a lot of other people are experiencing the same OOM memory problems with BitmapFactory. My app only shows a total memory available of 4MB using Runtime. getRuntime ().totalMemory(). If the limit is 16MB, then why doesn't the total memory grow to make room for the bitmap? Instead it throws an error.............
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Apr 8, 2010
I'm writing game with a large amount of .png pictures. All worked fine. Than I added new activity with WebView and got memory shortage. After that I made some experiment - replace game .png images with ones that just fully filled with some color. As result memory shortage had gone.
But I suppose that Bitmap internally hold each pixel separately so such changes should have no effect. Maybe this because of initial images have alpha channel and my test images have not it?
But actually question is: Will decreasing .png images files sizes make some effect on decreasing usage of VM application heap or not?
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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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Feb 18, 2010
I am implemented this code image upload device only how can retrieve bitmap uri..
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Nov 26, 2013
I have a basic application that uses just squares and circles that appear when the screen is toched. I want to be able to save this created image, the design is build on a bitmap image, and displayed on the canvas so I want to be able to save that as an image to the mobile device.
code for saving this?
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Sep 24, 2010
I have problem with displaying bitmap image on imageview on high density screen (480x800). When the bitmap image loaded from file on sdcard, the image does not scale to fit hdpi screen. On medium density screen it works normal (320x480).code...
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Jul 24, 2010
I am facing a problem of Out Of Memory Error that is bitmap size exceeds vm budget while changing the orientation of the Droid mobile (but not in any of other mobiles like Android normal and Android small).I am displaying 10 images in grid view, each one size is less than 20kb. If i insert 6 images then it doesn't arise that error.
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Nov 16, 2010
I've got a custom view in which I need to draw two bitmaps, one is a background, representing the image of a map and one is a pin which will be drawn on top/left position in canvas.
The both images are drawn onDraw and remain the same during the live of the activity that contains the view. After a while I get a OutOfMemoryError: bitmap size exceeds
VM budget
This means that I have a leak and the bitmaps don't get garbage collected. I asked this question before, but now the situation changed a little. I made a init method where I set the bitmaps I want to use but this still isn't a good approach, the error appears later, but still there.
Here is the code:
public class MyMapView extends View
private int xPos = 0;
private int yPos = 0;
private int space = 0;
private Bitmap resizedBitmap;
private Bitmap position;
private Bitmap mapBitmap;
public void destroy()
resizedBitmap.recycle();
resizedBitmap=null;
position.recycle();
position=null;
mapBitmap.recycle();
mapBitmap=null;
I call the setMapBitmap() and init() on onCreate of the activity that contains the view. In there I know what bitmap will be used as map. onPause of the activity I call the destroy() of the view. I still get errors.
I've read this this but I don't know how to adapt it on my case
I AM OPEN TO ANY OTHER SOLUTION. Please note that I need to resize the map bitmap (based on the height of the layout that contains it in mai activity) and still be able to draw the position on correct place.
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Apr 2, 2009
I am 1) taking a picture and 2) then draw another Bitmap on top of it 3) then I store it
I am doing it as follows and it works on the emulator.
On the device I get a OutOfMemoryError: bitmap size exceeds VM budget android.graphics.Bitmap.nativeCopy(Native Method) android.graphics.Bitmap.copy(Bitmap.java:199) in the line copy the Bitmap to get a mutable Bitmap.
CODE:...........
What I am asking:
a) Is there a better way to do what I am doing? 1) take a picture 2) draw another Bitmap on top of it 3) then I store it
b) What is the best way to create a mutable Bitmap from the picture I just took with the camera?
In my app, resolution is not an issue. If it works better for small photos that would be fine.
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Oct 8, 2010
I was trying to download application from OTA server on my device but fails as SDCard is not present in it.Is it possible to download application in device memory?
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Oct 1, 2010
I own an Android based handset. It keep telling me that its internal memory is low. I've uninstalled many unused 3rd part apps, and restart the device. Its still saying its running low. I guess there are cache's/legacy files remaining somewhere.
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Oct 8, 2009
I have two questions actually:
Is it better to draw an image on a bitmap or create a bitmap as resource and then draw it over a bitmap? Performance wise... which one is better?
If I want to draw something transparent over a bitmap, how would I go about doing it?
If I want to overlay one transparent bitmap over another, how would I do it?
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Mar 22, 2009
My goal is the draw a bitmap onto another bitmap but rotated 90 degress. whats the most efficient way to do that. My current method is as follows which is horribly bad because it creates a new bitmap every time.
CODE:.....................
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Jun 17, 2010
How to store username password in device memory.Even after the user closes the application and returns back , he should be able to authenticate his username and password. Right now I am testing in Eclipse. so please help me with some pointers/links which will allow me to test in Eclipse and eventually run on Mobile.
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Jun 25, 2010
How to read and display the data stored in the Internal Storage-private data on the device memory.
String input=(inputBox.getText().toString());
String FILENAME = "hello_file"; //this is my file name
FileOutputStream fos; try {
fos = openFileOutput(FILENAME, Context.MODE_PRIVATE);
fos.write(input.getBytes()); //input is got from on click button
fos.close(); } catch (FileNotFoundException e) {
e.printStackTrace(); } catch (IOException e) {
e.printStackTrace();
} try { fos1= openFileInput (FILENAME);
} catch (FileNotFoundException e) {}
outputView.setText(fos1./*I don't know what goes here*/);
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Aug 28, 2012
About a week ago i rooted my kindle fire with the teamwin twrp and flashed the eyecandy ROM. now when i wanted to add something that was 800 MB to my kindle (a game), it says all of my memory is taken up. i have 1 GB of songs and 1 GB of backups. What is taking up all of my memory and how can i remove it?
PS I only have 5 GB available and 4.5 are taken up
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May 27, 2012
I use 1 TAP cleaner to wipe out cache , but since last few days i see that much more "device memory" has been used by what i don't know !!
I uninstalled many less-used apps from the task manager yet the "free-memory" shown is not as much as it should be on the device !!
I also move many apps to SD using app2sd but still the device memory has not been freed as per my expectation ! out of the 1.97 GB available i have hardly 0.94 GB left as free memory on device !!
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Jan 20, 2009
When I install my application with Eclipse ADT (by simply run and choose device that appears in the list) through USB onto device, sometimes I noticed it consumes internal memory (storage) space even though application is already loaded on the device (exactly same version - just some minor code changes)As my application size getting big, this is really annoying because eventually it will use up all initial storage space of ~70MB and I have to factory reset in order for me to continue testing my application on real device.I did little investigation and find out this seems to happen when
1) load/run application onto device for first time with USB
2) disconnect USB
3) restart Eclipse
4) connect device and try to load/run application onto device
5) internal memory goes down by application size ...
and it does NOT seem to happen as long as I keep USB connection and Eclipse still recognize the device. I'm just guessing here, but maybe does Eclipse ADT creates temporary file of some kind that's get left behind when I disconnect USB? I'm running RC30 so I don't have root access and can't check system files/folders but is there any way to look for these temp files (if any) and clear out either from Eclipse, or using adb shell command?So for now, I leave my device connected to Eclipse all the time but I want to use it as phone as well as sometimes I want to show to my friends to get some feedback etc it would be really nice if I can somehow load application onto device, disconnect and keep testing/using phone.Has anyone experience this issue? If so, is there any walk around to this problem? Or could you point me out what I'm doing wrong here? I tried few things myself, such as close Eclipse right after I launch my application on device, disconnect USB etc but nothing seem to work.
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Jan 24, 2014
I have a samsung galaxy young s6312, stock android 4.1.2 jellybean, rooted. I want to install asphalt 8 (about 1.6 gb) on my device. But the problem is that even if I factory reset my device, the maximum free memory I can get is 1.48 gb as my device internal memory is 1.5 gb. I have an external sd card of 8 gb. so how can I install the game with its data DIRECTLY on the external sd? My device is rooted and busybox installed..
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Apr 5, 2013
I want to write an apk file in device external memory (Not in Ext SD card) by downloading url.using
Environment.getExternalStorageDirectory() able to write in memory and the same working in some devices other than Samsung grand, Duos and samsung note 1.
Why its not working in those devices and how can i make my check generic for all devices.
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