getNumFd
Retrieves the file descriptor number from a {@link ParcelFileDescriptor}.
Return
The file descriptor number, or -1 if an error occurred.
Parameters
fdObj
The {@link ParcelFileDescriptor} to get the file descriptor from.
Retrieves the file descriptor number from a {@link ParcelFileDescriptor}.
The file descriptor number, or -1 if an error occurred.
The {@link ParcelFileDescriptor} to get the file descriptor from.