file.length return always 0 in android

Question

I want to check size of file where I have only URI content://media/external/video/media/813 to get size of file I use:

File file=new File(uri.getPath());
                    long ls = file.length();

and always get 0. Any ideas?

Answer 1

Try below code to get length of your file

 Cursor returnCursor =
                getContentResolver().query(uri, null, null, null, null);
        int sizeIndex = returnCursor.getColumnIndex(OpenableColumns.SIZE);
        returnCursor.moveToFirst();
        int size = (int) returnCursor.getLong(sizeIndex);

Answer 2

try this,

String[] filePathColumn = {MediaStore.Images.Media.DATA};
Cursor cursor = context.getContentResolver().query(uri, filePathColumn, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
String filePath = cursor.getString(columnIndex);
cursor.close();

File file = new File(filePath);
long ls = file.length();