Hello fellow developers,
This is again, about the famous "external allocation too large for
this process" Out of Memory exception when loading Bitmaps into your
memory.
The problem revolves around the following error message:
1502400-byte external allocation too large for this process.
Out of memory: Heap Size=5123KB, Allocated=2481KB, Bitmap Size=11183KB
VM won't let us allocate 1502400 bytes
I've been doing some simple tests and I just can't seem to figure out
what the "Bitmap Size" means.
The bit of code which generates the above error is as follow:
I call the following line (nothing else, this is my main call):
Bitmap bitmap =
loadBitmap(resources.getDrawable(R.drawable.map_image),
Config.RGB_565);
Bitmap bitmap1 =
loadBitmap(resources.getDrawable(R.drawable.map_image),
Config.RGB_565);
Bitmap bitmap2 =
loadBitmap(resources.getDrawable(R.drawable.map_image),
Config.RGB_565);
[...]
Bitmap bitmap9 =
loadBitmap(resources.getDrawable(R.drawable.map_image),
Config.RGB_565);
about 10 times
The map_image has the following dimensions: 1565x480
So it's using up 1502.4kb of memory: 1565*480*2/1000 (*2 => RGB_565)
The loadBitmap function used in the above few lines will call the
following function:
static public Bitmap loadBitmap(Drawable drawable, Config
bitmapConfig) {
int width = drawable.getIntrinsicWidth();
int height = drawable.getIntrinsicHeight();
long sizeStart;
long size;
Bitmap bitmap;
sizeStart = Debug.getNativeHeapAllocatedSize();
bitmap = Bitmap.createBitmap(width, height, bitmapConfig);
size = Debug.getNativeHeapAllocatedSize() - sizeStart;
System.out.println("Created : " + bitmapConfig.toString() + " :
" +
size/1000 + " Kb, " + bitmap.getWidth() + "x" + bitmap.getHeight());
Canvas canvas = new Canvas(bitmap);
drawable.setBounds(0, 0, width, height);
drawable.draw(canvas);
return bitmap;
}
Now when I run the code, I will get about 5 calls to the loadBitmap:
Created : RGB_565 : 1503 Kb, 1565x480
Created : RGB_565 : 1503 Kb, 1565x480
Created : RGB_565 : 1503 Kb, 1565x480
Created : RGB_565 : 1503 Kb, 1565x480
Created : RGB_565 : 1503 Kb, 1565x480
Before getting the dreaded:
1502400-byte external allocation too large for this process.
Out of memory: Heap Size=5123KB, Allocated=2481KB, Bitmap Size=11183KB
VM won't let us allocate 1502400 bytes
Now I understand that 1502400 bytes is the memory needed to load a new
bitmap.
I'm guessing that the 5123+2481KB represent (approximately) the 5
previously loaded bitmaps (7604/5=1520.8)
But what in god's name is that Bitmap Size value? what is using up
those 11 megs?
My subsequent question is: In theory I should be able to load 10 times
that 1.5 mb bitmap in my memory (before I reach the 16mb limit) why am
getting an exception after the fifth bitmap?
Thank you very much for any reply or leads you might be able to give
me,
Regards,
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