java.io.IOException: read failed: EBADF (Bad file descriptor)

Question

I am trying to convert a video file into a byte array, like so:

protected void onActivityResult(int requestCode, int resultCode, final @Nullable Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        switch (requestCode) {
            case VIDEO_SELECT_CODE:


                if (resultCode == RESULT_OK) {
                    Uri uri = data.getData();
                    try {
                        FileInputStream importdb = new FileInputStream(getContentResolver().openFileDescriptor(uri, "r").getFileDescriptor());
                        ByteArrayOutputStream buffer = new ByteArrayOutputStream();

                        int nRead;


                        byte[] bytes = new byte[100000];

                        while ((nRead = importdb.read(bytes, 0, bytes.length)) != -1) {
                            buffer.write(bytes, 0, nRead);
                        }
                    }catch(Exception e){
                        e.printStackTrace();
                }
                break;
        }
}

I get the following error message :

java.io.IOException: read failed: EBADF (Bad file descriptor)

when I try to open some .mp4 files while I don't get it while opening some others.

Why could this be?

(this snippet of code is the onActivityResult method for the Activity in which I select a video from the phone's internal storage, so uri is the URI for that selected video file)

Answer 1

You forgot to close the Parcel File Descriptor which is returned by openFileDescriptor() . Besides Input/Output streams, you must also remember about closing the Asset/Parcel File Descriptor at the end.