Size of file which we get through AssetManager function getAssets in Android

Question

AssetManager mngr = getAssets();
test_file = mngr.open("sample.txt");

above test_file variable is of InputStream type. Any way to calculate the file size of sample.txt from it?

Answer 1

I have an alternative to get size of a file in assets using AssetFileDescriptor:

AssetFileDescriptor fd = getAssets().openFd("test.png");
Long size = fd.getLength();

Hope it helps.

Answer 2

test_file.available();

Is not a very reliable method to get the file length as is stated in the docs.

size = fd.getLength();

Using the FileDescriptor as shown by Ayublin is!

His answer should be promoted to the correct answer.