Is there any way to get the storage size of a Bitmap?

问题

In my app I am downloading some images and I want to know if there is any way I can get the size of a Bitmap that I have downloaded. It's a simple question but i can't seem to find the solution through Google.

here's the code for downloading:

Bitmap b = BitmapFactory.decodeStream((InputStream) new URL(theImageUrl).getContent());

回答1:

First convert the Bitmap into byte[] then you can get the size of bitmap

Try with thye following code

Bitmap bitmap = your bitmap object
ByteArrayOutputStream stream = new ByteArrayOutputStream();
    bitmap.compress(Bitmap.CompressFormat.JPEG, 100, stream);
    byte[] imageInByte = stream.toByteArray();
long length = imageInByte.length;

回答2:

File file = new File("infilename");

// Get the number of bytes in the file
long length = file.length();

回答3:

Use b.getByteCount(); or do you want to query the size form the server before you download?

EDIT: This method is only available for API Level 12.

来源：https://stackoverflow.com/questions/6424410/is-there-any-way-to-get-the-storage-size-of-a-bitmap